[1826] | 1 | !> @file plant_canopy_model_mod.f90 |
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[2000] | 2 | !------------------------------------------------------------------------------! |
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[1036] | 3 | ! This file is part of PALM. |
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| 4 | ! |
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[2000] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 6 | ! terms of the GNU General Public License as published by the Free Software |
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| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 8 | ! version. |
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[1036] | 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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[2101] | 17 | ! Copyright 1997-2017 Leibniz Universitaet Hannover |
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[2000] | 18 | !------------------------------------------------------------------------------! |
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[1036] | 19 | ! |
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[257] | 20 | ! Current revisions: |
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[138] | 21 | ! ----------------- |
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[2213] | 22 | ! Bugfix: exchange of ghost points in array pc_heating_rate needed for output |
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| 23 | ! of pcm_heatrate, onetime ghost point exchange of lad_s after initialization. |
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| 24 | ! Formatting and clean-up of subroutine pcm_read_plant_canopy_3d, |
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| 25 | ! minor re-organization of canopy-heating initialization. |
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[2008] | 26 | ! |
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| 27 | ! Former revisions: |
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| 28 | ! ----------------- |
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| 29 | ! $Id: plant_canopy_model_mod.f90 2213 2017-04-24 15:10:35Z kanani $ |
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| 30 | ! |
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[2210] | 31 | ! 2209 2017-04-19 09:34:46Z kanani |
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| 32 | ! Added 3d output of leaf area density (pcm_lad) and canopy |
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| 33 | ! heat rate (pcm_heatrate) |
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| 34 | ! |
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[2025] | 35 | ! 2024 2016-10-12 16:42:37Z kanani |
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| 36 | ! Added missing lad_s initialization |
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| 37 | ! |
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[2012] | 38 | ! 2011 2016-09-19 17:29:57Z kanani |
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| 39 | ! Renamed canopy_heat_flux to pc_heating_rate, since the original meaning/ |
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| 40 | ! calculation of the quantity has changed, related to the urban surface model |
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| 41 | ! and similar future applications. |
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| 42 | ! |
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[2008] | 43 | ! 2007 2016-08-24 15:47:17Z kanani |
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[2007] | 44 | ! Added SUBROUTINE pcm_read_plant_canopy_3d for reading 3d plant canopy data |
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| 45 | ! from file (new case canopy_mode=read_from_file_3d) in the course of |
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| 46 | ! introduction of urban surface model, |
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| 47 | ! introduced variable ext_coef, |
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| 48 | ! resorted SUBROUTINEs to alphabetical order |
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[1827] | 49 | ! |
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[2001] | 50 | ! 2000 2016-08-20 18:09:15Z knoop |
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| 51 | ! Forced header and separation lines into 80 columns |
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| 52 | ! |
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[1961] | 53 | ! 1960 2016-07-12 16:34:24Z suehring |
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| 54 | ! Separate humidity and passive scalar |
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| 55 | ! |
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[1954] | 56 | ! 1953 2016-06-21 09:28:42Z suehring |
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| 57 | ! Bugfix, lad_s and lad must be public |
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| 58 | ! |
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[1827] | 59 | ! 1826 2016-04-07 12:01:39Z maronga |
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| 60 | ! Further modularization |
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| 61 | ! |
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[1722] | 62 | ! 1721 2015-11-16 12:56:48Z raasch |
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| 63 | ! bugfixes: shf is reduced in areas covered with canopy only, |
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| 64 | ! canopy is set on top of topography |
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| 65 | ! |
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[1683] | 66 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 67 | ! Code annotations made doxygen readable |
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| 68 | ! |
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[1485] | 69 | ! 1484 2014-10-21 10:53:05Z kanani |
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[1484] | 70 | ! Changes due to new module structure of the plant canopy model: |
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| 71 | ! module plant_canopy_model_mod now contains a subroutine for the |
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[1826] | 72 | ! initialization of the canopy model (pcm_init), |
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[1484] | 73 | ! limitation of the canopy drag (previously accounted for by calculation of |
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| 74 | ! a limiting canopy timestep for the determination of the maximum LES timestep |
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| 75 | ! in subroutine timestep) is now realized by the calculation of pre-tendencies |
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[1826] | 76 | ! and preliminary velocities in subroutine pcm_tendency, |
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| 77 | ! some redundant MPI communication removed in subroutine pcm_init |
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[1484] | 78 | ! (was previously in init_3d_model), |
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| 79 | ! unnecessary 3d-arrays lad_u, lad_v, lad_w removed - lad information on the |
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| 80 | ! respective grid is now provided only by lad_s (e.g. in the calculation of |
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| 81 | ! the tendency terms or of cum_lai_hf), |
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| 82 | ! drag_coefficient, lai, leaf_surface_concentration, |
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| 83 | ! scalar_exchange_coefficient, sec and sls renamed to canopy_drag_coeff, |
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| 84 | ! cum_lai_hf, leaf_surface_conc, leaf_scalar_exch_coeff, lsec and lsc, |
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| 85 | ! respectively, |
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| 86 | ! unnecessary 3d-arrays cdc, lsc and lsec now defined as single-value constants, |
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| 87 | ! USE-statements and ONLY-lists modified accordingly |
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[1341] | 88 | ! |
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| 89 | ! 1340 2014-03-25 19:45:13Z kanani |
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| 90 | ! REAL constants defined as wp-kind |
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| 91 | ! |
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[1321] | 92 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 93 | ! ONLY-attribute added to USE-statements, |
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| 94 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 95 | ! kinds are defined in new module kinds, |
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| 96 | ! old module precision_kind is removed, |
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| 97 | ! revision history before 2012 removed, |
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| 98 | ! comment fields (!:) to be used for variable explanations added to |
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| 99 | ! all variable declaration statements |
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[153] | 100 | ! |
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[1037] | 101 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 102 | ! code put under GPL (PALM 3.9) |
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| 103 | ! |
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[139] | 104 | ! 138 2007-11-28 10:03:58Z letzel |
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| 105 | ! Initial revision |
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| 106 | ! |
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[138] | 107 | ! Description: |
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| 108 | ! ------------ |
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[1682] | 109 | !> 1) Initialization of the canopy model, e.g. construction of leaf area density |
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[1826] | 110 | !> profile (subroutine pcm_init). |
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[1682] | 111 | !> 2) Calculation of sinks and sources of momentum, heat and scalar concentration |
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[1826] | 112 | !> due to canopy elements (subroutine pcm_tendency). |
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[138] | 113 | !------------------------------------------------------------------------------! |
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[1682] | 114 | MODULE plant_canopy_model_mod |
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| 115 | |
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[1484] | 116 | USE arrays_3d, & |
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[1960] | 117 | ONLY: dzu, dzw, e, q, s, shf, tend, u, v, w, zu, zw |
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[138] | 118 | |
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[1484] | 119 | USE indices, & |
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| 120 | ONLY: nbgp, nxl, nxlg, nxlu, nxr, nxrg, nyn, nyng, nys, nysg, nysv, & |
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| 121 | nz, nzb, nzb_s_inner, nzb_u_inner, nzb_v_inner, nzb_w_inner, nzt |
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| 122 | |
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| 123 | USE kinds |
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| 124 | |
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| 125 | |
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| 126 | IMPLICIT NONE |
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| 127 | |
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| 128 | |
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[1682] | 129 | CHARACTER (LEN=20) :: canopy_mode = 'block' !< canopy coverage |
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[1484] | 130 | |
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[1682] | 131 | INTEGER(iwp) :: pch_index = 0 !< plant canopy height/top index |
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[1484] | 132 | INTEGER(iwp) :: & |
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[1682] | 133 | lad_vertical_gradient_level_ind(10) = -9999 !< lad-profile levels (index) |
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[1484] | 134 | |
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[1682] | 135 | LOGICAL :: calc_beta_lad_profile = .FALSE. !< switch for calc. of lad from beta func. |
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| 136 | LOGICAL :: plant_canopy = .FALSE. !< switch for use of canopy model |
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[1484] | 137 | |
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[1682] | 138 | REAL(wp) :: alpha_lad = 9999999.9_wp !< coefficient for lad calculation |
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| 139 | REAL(wp) :: beta_lad = 9999999.9_wp !< coefficient for lad calculation |
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| 140 | REAL(wp) :: canopy_drag_coeff = 0.0_wp !< canopy drag coefficient (parameter) |
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| 141 | REAL(wp) :: cdc = 0.0_wp !< canopy drag coeff. (abbreviation used in equations) |
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| 142 | REAL(wp) :: cthf = 0.0_wp !< canopy top heat flux |
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| 143 | REAL(wp) :: dt_plant_canopy = 0.0_wp !< timestep account. for canopy drag |
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[2007] | 144 | REAL(wp) :: ext_coef = 0.6_wp !< extinction coefficient |
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[1682] | 145 | REAL(wp) :: lad_surface = 0.0_wp !< lad surface value |
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| 146 | REAL(wp) :: lai_beta = 0.0_wp !< leaf area index (lai) for lad calc. |
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[1484] | 147 | REAL(wp) :: & |
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[1682] | 148 | leaf_scalar_exch_coeff = 0.0_wp !< canopy scalar exchange coeff. |
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[1484] | 149 | REAL(wp) :: & |
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[1682] | 150 | leaf_surface_conc = 0.0_wp !< leaf surface concentration |
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| 151 | REAL(wp) :: lsec = 0.0_wp !< leaf scalar exchange coeff. |
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| 152 | REAL(wp) :: lsc = 0.0_wp !< leaf surface concentration |
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[1484] | 153 | |
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| 154 | REAL(wp) :: & |
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[1682] | 155 | lad_vertical_gradient(10) = 0.0_wp !< lad gradient |
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[1484] | 156 | REAL(wp) :: & |
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[1682] | 157 | lad_vertical_gradient_level(10) = -9999999.9_wp !< lad-prof. levels (in m) |
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[1484] | 158 | |
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[1682] | 159 | REAL(wp), DIMENSION(:), ALLOCATABLE :: lad !< leaf area density |
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| 160 | REAL(wp), DIMENSION(:), ALLOCATABLE :: pre_lad !< preliminary lad |
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[1484] | 161 | |
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| 162 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: & |
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[2011] | 163 | pc_heating_rate !< plant canopy heating rate |
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[1682] | 164 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: cum_lai_hf !< cumulative lai for heatflux calc. |
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| 165 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: lad_s !< lad on scalar-grid |
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[1484] | 166 | |
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| 167 | |
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| 168 | SAVE |
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| 169 | |
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| 170 | |
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[138] | 171 | PRIVATE |
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[1826] | 172 | |
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| 173 | ! |
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| 174 | !-- Public functions |
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[2209] | 175 | PUBLIC pcm_check_data_output, pcm_check_parameters, pcm_data_output_3d, & |
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| 176 | pcm_define_netcdf_grid, pcm_header, pcm_init, pcm_parin, pcm_tendency |
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[138] | 177 | |
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[1826] | 178 | ! |
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| 179 | !-- Public variables and constants |
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[2011] | 180 | PUBLIC pc_heating_rate, canopy_mode, cthf, dt_plant_canopy, lad, lad_s, & |
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[2007] | 181 | pch_index, plant_canopy |
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| 182 | |
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[1484] | 183 | |
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[2209] | 184 | INTERFACE pcm_check_data_output |
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| 185 | MODULE PROCEDURE pcm_check_data_output |
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| 186 | END INTERFACE pcm_check_data_output |
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| 187 | |
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[1826] | 188 | INTERFACE pcm_check_parameters |
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| 189 | MODULE PROCEDURE pcm_check_parameters |
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[2209] | 190 | END INTERFACE pcm_check_parameters |
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| 191 | |
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| 192 | INTERFACE pcm_data_output_3d |
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| 193 | MODULE PROCEDURE pcm_data_output_3d |
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| 194 | END INTERFACE pcm_data_output_3d |
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| 195 | |
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| 196 | INTERFACE pcm_define_netcdf_grid |
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| 197 | MODULE PROCEDURE pcm_define_netcdf_grid |
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| 198 | END INTERFACE pcm_define_netcdf_grid |
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[1826] | 199 | |
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| 200 | INTERFACE pcm_header |
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| 201 | MODULE PROCEDURE pcm_header |
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| 202 | END INTERFACE pcm_header |
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| 203 | |
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| 204 | INTERFACE pcm_init |
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| 205 | MODULE PROCEDURE pcm_init |
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| 206 | END INTERFACE pcm_init |
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[138] | 207 | |
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[1826] | 208 | INTERFACE pcm_parin |
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| 209 | MODULE PROCEDURE pcm_parin |
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[2007] | 210 | END INTERFACE pcm_parin |
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| 211 | |
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| 212 | INTERFACE pcm_read_plant_canopy_3d |
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| 213 | MODULE PROCEDURE pcm_read_plant_canopy_3d |
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| 214 | END INTERFACE pcm_read_plant_canopy_3d |
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[1826] | 215 | |
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| 216 | INTERFACE pcm_tendency |
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| 217 | MODULE PROCEDURE pcm_tendency |
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| 218 | MODULE PROCEDURE pcm_tendency_ij |
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| 219 | END INTERFACE pcm_tendency |
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[1484] | 220 | |
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| 221 | |
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[138] | 222 | CONTAINS |
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| 223 | |
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[2209] | 224 | |
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| 225 | !------------------------------------------------------------------------------! |
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| 226 | ! Description: |
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| 227 | ! ------------ |
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| 228 | !> Check data output for plant canopy model |
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| 229 | !------------------------------------------------------------------------------! |
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| 230 | SUBROUTINE pcm_check_data_output( var, unit ) |
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[1826] | 231 | |
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[2209] | 232 | |
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| 233 | USE control_parameters, & |
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| 234 | ONLY: data_output, message_string |
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| 235 | |
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| 236 | IMPLICIT NONE |
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| 237 | |
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| 238 | CHARACTER (LEN=*) :: unit !< |
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| 239 | CHARACTER (LEN=*) :: var !< |
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| 240 | |
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| 241 | |
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| 242 | SELECT CASE ( TRIM( var ) ) |
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| 243 | |
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| 244 | CASE ( 'pcm_heatrate' ) |
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| 245 | unit = 'K s-1' |
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| 246 | |
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| 247 | CASE ( 'pcm_lad' ) |
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| 248 | unit = 'm2 m-3' |
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| 249 | |
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| 250 | |
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| 251 | CASE DEFAULT |
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| 252 | unit = 'illegal' |
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| 253 | |
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| 254 | END SELECT |
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| 255 | |
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| 256 | |
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| 257 | END SUBROUTINE pcm_check_data_output |
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| 258 | |
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| 259 | |
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[1826] | 260 | !------------------------------------------------------------------------------! |
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| 261 | ! Description: |
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| 262 | ! ------------ |
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| 263 | !> Check parameters routine for plant canopy model |
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| 264 | !------------------------------------------------------------------------------! |
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| 265 | SUBROUTINE pcm_check_parameters |
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[138] | 266 | |
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[1826] | 267 | USE control_parameters, & |
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| 268 | ONLY: cloud_physics, message_string, microphysics_seifert |
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| 269 | |
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| 270 | |
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| 271 | IMPLICIT NONE |
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| 272 | |
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| 273 | |
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| 274 | IF ( canopy_drag_coeff == 0.0_wp ) THEN |
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| 275 | message_string = 'plant_canopy = .TRUE. requires a non-zero drag '// & |
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| 276 | 'coefficient & given value is canopy_drag_coeff = 0.0' |
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| 277 | CALL message( 'check_parameters', 'PA0041', 1, 2, 0, 6, 0 ) |
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| 278 | ENDIF |
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| 279 | |
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| 280 | IF ( ( alpha_lad /= 9999999.9_wp .AND. beta_lad == 9999999.9_wp ) .OR.& |
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| 281 | beta_lad /= 9999999.9_wp .AND. alpha_lad == 9999999.9_wp ) THEN |
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| 282 | message_string = 'using the beta function for the construction ' // & |
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| 283 | 'of the leaf area density profile requires ' // & |
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| 284 | 'both alpha_lad and beta_lad to be /= 9999999.9' |
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| 285 | CALL message( 'check_parameters', 'PA0118', 1, 2, 0, 6, 0 ) |
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| 286 | ENDIF |
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| 287 | |
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| 288 | IF ( calc_beta_lad_profile .AND. lai_beta == 0.0_wp ) THEN |
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| 289 | message_string = 'using the beta function for the construction ' // & |
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| 290 | 'of the leaf area density profile requires ' // & |
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| 291 | 'a non-zero lai_beta, but given value is ' // & |
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| 292 | 'lai_beta = 0.0' |
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| 293 | CALL message( 'check_parameters', 'PA0119', 1, 2, 0, 6, 0 ) |
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| 294 | ENDIF |
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| 295 | |
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| 296 | IF ( calc_beta_lad_profile .AND. lad_surface /= 0.0_wp ) THEN |
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| 297 | message_string = 'simultaneous setting of alpha_lad /= 9999999.9' // & |
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| 298 | 'and lad_surface /= 0.0 is not possible, ' // & |
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| 299 | 'use either vertical gradients or the beta ' // & |
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| 300 | 'function for the construction of the leaf area '// & |
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| 301 | 'density profile' |
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| 302 | CALL message( 'check_parameters', 'PA0120', 1, 2, 0, 6, 0 ) |
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| 303 | ENDIF |
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| 304 | |
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| 305 | IF ( cloud_physics .AND. microphysics_seifert ) THEN |
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| 306 | message_string = 'plant_canopy = .TRUE. requires cloud_scheme /=' // & |
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| 307 | ' seifert_beheng' |
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| 308 | CALL message( 'check_parameters', 'PA0360', 1, 2, 0, 6, 0 ) |
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| 309 | ENDIF |
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| 310 | |
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| 311 | |
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| 312 | END SUBROUTINE pcm_check_parameters |
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| 313 | |
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| 314 | |
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[138] | 315 | !------------------------------------------------------------------------------! |
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[2209] | 316 | ! |
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[1484] | 317 | ! Description: |
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| 318 | ! ------------ |
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[2209] | 319 | !> Subroutine defining 3D output variables |
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| 320 | !------------------------------------------------------------------------------! |
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| 321 | SUBROUTINE pcm_data_output_3d( av, variable, found, local_pf ) |
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| 322 | |
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| 323 | USE control_parameters, & |
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| 324 | ONLY : nz_do3d |
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| 325 | |
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| 326 | USE indices |
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| 327 | |
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| 328 | USE kinds |
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| 329 | |
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| 330 | |
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| 331 | IMPLICIT NONE |
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| 332 | |
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| 333 | CHARACTER (LEN=*) :: variable !< |
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| 334 | |
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| 335 | INTEGER(iwp) :: av !< |
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| 336 | INTEGER(iwp) :: i !< |
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| 337 | INTEGER(iwp) :: j !< |
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| 338 | INTEGER(iwp) :: k !< |
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| 339 | |
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| 340 | LOGICAL :: found !< |
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| 341 | |
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| 342 | REAL(sp), DIMENSION(nxlg:nxrg,nysg:nyng,nzb:nz_do3d) :: local_pf !< |
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| 343 | |
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| 344 | |
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| 345 | found = .TRUE. |
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| 346 | |
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| 347 | |
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| 348 | SELECT CASE ( TRIM( variable ) ) |
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| 349 | |
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| 350 | CASE ( 'pcm_heatrate' ) |
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[2213] | 351 | CALL exchange_horiz( pc_heating_rate, nbgp ) |
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[2209] | 352 | IF ( av == 0 ) THEN |
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| 353 | DO i = nxlg, nxrg |
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| 354 | DO j = nysg, nyng |
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| 355 | DO k = nzb_s_inner(j,i), nz_do3d |
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[2213] | 356 | local_pf(i,j,k) = pc_heating_rate(k-nzb_s_inner(j,i),j,i) |
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[2209] | 357 | ENDDO |
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| 358 | ENDDO |
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| 359 | ENDDO |
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| 360 | ENDIF |
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| 361 | |
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| 362 | |
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| 363 | CASE ( 'pcm_lad' ) |
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| 364 | IF ( av == 0 ) THEN |
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| 365 | DO i = nxlg, nxrg |
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| 366 | DO j = nysg, nyng |
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| 367 | DO k = nzb_s_inner(j,i), nz_do3d |
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[2213] | 368 | local_pf(i,j,k) = lad_s(k-nzb_s_inner(j,i),j,i) |
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[2209] | 369 | ENDDO |
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| 370 | ENDDO |
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| 371 | ENDDO |
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| 372 | ENDIF |
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| 373 | |
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| 374 | |
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| 375 | CASE DEFAULT |
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| 376 | found = .FALSE. |
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| 377 | |
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| 378 | END SELECT |
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| 379 | |
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| 380 | |
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| 381 | END SUBROUTINE pcm_data_output_3d |
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| 382 | |
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| 383 | !------------------------------------------------------------------------------! |
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| 384 | ! |
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| 385 | ! Description: |
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| 386 | ! ------------ |
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| 387 | !> Subroutine defining appropriate grid for netcdf variables. |
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| 388 | !> It is called from subroutine netcdf. |
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| 389 | !------------------------------------------------------------------------------! |
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| 390 | SUBROUTINE pcm_define_netcdf_grid( var, found, grid_x, grid_y, grid_z ) |
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| 391 | |
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| 392 | IMPLICIT NONE |
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| 393 | |
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| 394 | CHARACTER (LEN=*), INTENT(IN) :: var !< |
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| 395 | LOGICAL, INTENT(OUT) :: found !< |
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| 396 | CHARACTER (LEN=*), INTENT(OUT) :: grid_x !< |
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| 397 | CHARACTER (LEN=*), INTENT(OUT) :: grid_y !< |
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| 398 | CHARACTER (LEN=*), INTENT(OUT) :: grid_z !< |
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| 399 | |
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| 400 | found = .TRUE. |
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| 401 | |
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| 402 | ! |
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| 403 | !-- Check for the grid |
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| 404 | SELECT CASE ( TRIM( var ) ) |
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| 405 | |
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| 406 | CASE ( 'pcm_heatrate', 'pcm_lad' ) |
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| 407 | grid_x = 'x' |
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| 408 | grid_y = 'y' |
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| 409 | grid_z = 'zu' |
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| 410 | |
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| 411 | CASE DEFAULT |
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| 412 | found = .FALSE. |
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| 413 | grid_x = 'none' |
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| 414 | grid_y = 'none' |
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| 415 | grid_z = 'none' |
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| 416 | END SELECT |
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| 417 | |
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| 418 | END SUBROUTINE pcm_define_netcdf_grid |
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| 419 | |
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| 420 | |
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| 421 | !------------------------------------------------------------------------------! |
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| 422 | ! Description: |
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| 423 | ! ------------ |
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[1826] | 424 | !> Header output for plant canopy model |
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| 425 | !------------------------------------------------------------------------------! |
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| 426 | SUBROUTINE pcm_header ( io ) |
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| 427 | |
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| 428 | USE control_parameters, & |
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| 429 | ONLY: dz, passive_scalar |
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| 430 | |
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| 431 | |
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| 432 | IMPLICIT NONE |
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| 433 | |
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| 434 | CHARACTER (LEN=10) :: coor_chr !< |
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| 435 | |
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| 436 | CHARACTER (LEN=86) :: coordinates !< |
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| 437 | CHARACTER (LEN=86) :: gradients !< |
---|
| 438 | CHARACTER (LEN=86) :: leaf_area_density !< |
---|
| 439 | CHARACTER (LEN=86) :: slices !< |
---|
| 440 | |
---|
| 441 | INTEGER(iwp) :: i !< |
---|
| 442 | INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file |
---|
| 443 | INTEGER(iwp) :: k !< |
---|
| 444 | |
---|
| 445 | REAL(wp) :: canopy_height !< canopy height (in m) |
---|
| 446 | |
---|
| 447 | canopy_height = pch_index * dz |
---|
| 448 | |
---|
| 449 | WRITE ( io, 1 ) canopy_mode, canopy_height, pch_index, & |
---|
| 450 | canopy_drag_coeff |
---|
| 451 | IF ( passive_scalar ) THEN |
---|
| 452 | WRITE ( io, 2 ) leaf_scalar_exch_coeff, & |
---|
| 453 | leaf_surface_conc |
---|
| 454 | ENDIF |
---|
| 455 | |
---|
| 456 | ! |
---|
| 457 | !-- Heat flux at the top of vegetation |
---|
| 458 | WRITE ( io, 3 ) cthf |
---|
| 459 | |
---|
| 460 | ! |
---|
| 461 | !-- Leaf area density profile, calculated either from given vertical |
---|
| 462 | !-- gradients or from beta probability density function. |
---|
| 463 | IF ( .NOT. calc_beta_lad_profile ) THEN |
---|
| 464 | |
---|
| 465 | !-- Building output strings, starting with surface value |
---|
| 466 | WRITE ( leaf_area_density, '(F7.4)' ) lad_surface |
---|
| 467 | gradients = '------' |
---|
| 468 | slices = ' 0' |
---|
| 469 | coordinates = ' 0.0' |
---|
| 470 | i = 1 |
---|
| 471 | DO WHILE ( i < 11 .AND. lad_vertical_gradient_level_ind(i) & |
---|
| 472 | /= -9999 ) |
---|
| 473 | |
---|
| 474 | WRITE (coor_chr,'(F7.2)') lad(lad_vertical_gradient_level_ind(i)) |
---|
| 475 | leaf_area_density = TRIM( leaf_area_density ) // ' ' // & |
---|
| 476 | TRIM( coor_chr ) |
---|
| 477 | |
---|
| 478 | WRITE (coor_chr,'(F7.2)') lad_vertical_gradient(i) |
---|
| 479 | gradients = TRIM( gradients ) // ' ' // TRIM( coor_chr ) |
---|
| 480 | |
---|
| 481 | WRITE (coor_chr,'(I7)') lad_vertical_gradient_level_ind(i) |
---|
| 482 | slices = TRIM( slices ) // ' ' // TRIM( coor_chr ) |
---|
| 483 | |
---|
| 484 | WRITE (coor_chr,'(F7.1)') lad_vertical_gradient_level(i) |
---|
| 485 | coordinates = TRIM( coordinates ) // ' ' // TRIM( coor_chr ) |
---|
| 486 | |
---|
| 487 | i = i + 1 |
---|
| 488 | ENDDO |
---|
| 489 | |
---|
| 490 | WRITE ( io, 4 ) TRIM( coordinates ), TRIM( leaf_area_density ), & |
---|
| 491 | TRIM( gradients ), TRIM( slices ) |
---|
| 492 | |
---|
| 493 | ELSE |
---|
| 494 | |
---|
| 495 | WRITE ( leaf_area_density, '(F7.4)' ) lad_surface |
---|
| 496 | coordinates = ' 0.0' |
---|
| 497 | |
---|
| 498 | DO k = 1, pch_index |
---|
| 499 | |
---|
| 500 | WRITE (coor_chr,'(F7.2)') lad(k) |
---|
| 501 | leaf_area_density = TRIM( leaf_area_density ) // ' ' // & |
---|
| 502 | TRIM( coor_chr ) |
---|
| 503 | |
---|
| 504 | WRITE (coor_chr,'(F7.1)') zu(k) |
---|
| 505 | coordinates = TRIM( coordinates ) // ' ' // TRIM( coor_chr ) |
---|
| 506 | |
---|
| 507 | ENDDO |
---|
| 508 | |
---|
| 509 | WRITE ( io, 5 ) TRIM( coordinates ), TRIM( leaf_area_density ), & |
---|
| 510 | alpha_lad, beta_lad, lai_beta |
---|
| 511 | |
---|
| 512 | ENDIF |
---|
| 513 | |
---|
| 514 | 1 FORMAT (//' Vegetation canopy (drag) model:'/ & |
---|
| 515 | ' ------------------------------'// & |
---|
| 516 | ' Canopy mode: ', A / & |
---|
| 517 | ' Canopy height: ',F6.2,'m (',I4,' grid points)' / & |
---|
| 518 | ' Leaf drag coefficient: ',F6.2 /) |
---|
| 519 | 2 FORMAT (/ ' Scalar exchange coefficient: ',F6.2 / & |
---|
| 520 | ' Scalar concentration at leaf surfaces in kg/m**3: ',F6.2 /) |
---|
| 521 | 3 FORMAT (' Predefined constant heatflux at the top of the vegetation: ',F6.2, & |
---|
| 522 | ' K m/s') |
---|
| 523 | 4 FORMAT (/ ' Characteristic levels of the leaf area density:'// & |
---|
| 524 | ' Height: ',A,' m'/ & |
---|
| 525 | ' Leaf area density: ',A,' m**2/m**3'/ & |
---|
| 526 | ' Gradient: ',A,' m**2/m**4'/ & |
---|
| 527 | ' Gridpoint: ',A) |
---|
| 528 | 5 FORMAT (//' Characteristic levels of the leaf area density and coefficients:'& |
---|
| 529 | // ' Height: ',A,' m'/ & |
---|
| 530 | ' Leaf area density: ',A,' m**2/m**3'/ & |
---|
| 531 | ' Coefficient alpha: ',F6.2 / & |
---|
| 532 | ' Coefficient beta: ',F6.2 / & |
---|
| 533 | ' Leaf area index: ',F6.2,' m**2/m**2' /) |
---|
| 534 | |
---|
| 535 | END SUBROUTINE pcm_header |
---|
| 536 | |
---|
| 537 | |
---|
| 538 | !------------------------------------------------------------------------------! |
---|
| 539 | ! Description: |
---|
| 540 | ! ------------ |
---|
[1682] | 541 | !> Initialization of the plant canopy model |
---|
[138] | 542 | !------------------------------------------------------------------------------! |
---|
[1826] | 543 | SUBROUTINE pcm_init |
---|
[1484] | 544 | |
---|
| 545 | |
---|
| 546 | USE control_parameters, & |
---|
[2213] | 547 | ONLY: coupling_char, dz, humidity, io_blocks, io_group, & |
---|
| 548 | message_string, ocean, passive_scalar |
---|
[1484] | 549 | |
---|
[2213] | 550 | USE control_parameters, & |
---|
| 551 | ONLY: urban_surface |
---|
[1484] | 552 | |
---|
| 553 | IMPLICIT NONE |
---|
| 554 | |
---|
[2007] | 555 | CHARACTER(10) :: pct |
---|
| 556 | |
---|
| 557 | INTEGER(iwp) :: i !< running index |
---|
| 558 | INTEGER(iwp) :: ii !< index |
---|
| 559 | INTEGER(iwp) :: j !< running index |
---|
| 560 | INTEGER(iwp) :: k !< running index |
---|
[1484] | 561 | |
---|
[2007] | 562 | REAL(wp) :: int_bpdf !< vertical integral for lad-profile construction |
---|
| 563 | REAL(wp) :: dzh !< vertical grid spacing in units of canopy height |
---|
| 564 | REAL(wp) :: gradient !< gradient for lad-profile construction |
---|
| 565 | REAL(wp) :: canopy_height !< canopy height for lad-profile construction |
---|
| 566 | REAL(wp) :: pcv(nzb:nzt+1) !< |
---|
| 567 | |
---|
[1484] | 568 | ! |
---|
| 569 | !-- Allocate one-dimensional arrays for the computation of the |
---|
| 570 | !-- leaf area density (lad) profile |
---|
| 571 | ALLOCATE( lad(0:nz+1), pre_lad(0:nz+1) ) |
---|
| 572 | lad = 0.0_wp |
---|
| 573 | pre_lad = 0.0_wp |
---|
| 574 | |
---|
| 575 | ! |
---|
[1826] | 576 | !-- Set flag that indicates that the lad-profile shall be calculated by using |
---|
| 577 | !-- a beta probability density function |
---|
| 578 | IF ( alpha_lad /= 9999999.9_wp .AND. beta_lad /= 9999999.9_wp ) THEN |
---|
| 579 | calc_beta_lad_profile = .TRUE. |
---|
| 580 | ENDIF |
---|
| 581 | |
---|
| 582 | |
---|
| 583 | ! |
---|
[1484] | 584 | !-- Compute the profile of leaf area density used in the plant |
---|
| 585 | !-- canopy model. The profile can either be constructed from |
---|
| 586 | !-- prescribed vertical gradients of the leaf area density or by |
---|
| 587 | !-- using a beta probability density function (see e.g. Markkanen et al., |
---|
| 588 | !-- 2003: Boundary-Layer Meteorology, 106, 437-459) |
---|
| 589 | IF ( .NOT. calc_beta_lad_profile ) THEN |
---|
| 590 | |
---|
| 591 | ! |
---|
| 592 | !-- Use vertical gradients for lad-profile construction |
---|
| 593 | i = 1 |
---|
| 594 | gradient = 0.0_wp |
---|
| 595 | |
---|
| 596 | IF ( .NOT. ocean ) THEN |
---|
| 597 | |
---|
| 598 | lad(0) = lad_surface |
---|
| 599 | lad_vertical_gradient_level_ind(1) = 0 |
---|
| 600 | |
---|
| 601 | DO k = 1, pch_index |
---|
| 602 | IF ( i < 11 ) THEN |
---|
| 603 | IF ( lad_vertical_gradient_level(i) < zu(k) .AND. & |
---|
| 604 | lad_vertical_gradient_level(i) >= 0.0_wp ) THEN |
---|
| 605 | gradient = lad_vertical_gradient(i) |
---|
| 606 | lad_vertical_gradient_level_ind(i) = k - 1 |
---|
| 607 | i = i + 1 |
---|
| 608 | ENDIF |
---|
| 609 | ENDIF |
---|
| 610 | IF ( gradient /= 0.0_wp ) THEN |
---|
| 611 | IF ( k /= 1 ) THEN |
---|
| 612 | lad(k) = lad(k-1) + dzu(k) * gradient |
---|
| 613 | ELSE |
---|
| 614 | lad(k) = lad_surface + dzu(k) * gradient |
---|
| 615 | ENDIF |
---|
| 616 | ELSE |
---|
| 617 | lad(k) = lad(k-1) |
---|
| 618 | ENDIF |
---|
| 619 | ENDDO |
---|
| 620 | |
---|
| 621 | ENDIF |
---|
| 622 | |
---|
| 623 | ! |
---|
| 624 | !-- In case of no given leaf area density gradients, choose a vanishing |
---|
| 625 | !-- gradient. This information is used for the HEADER and the RUN_CONTROL |
---|
| 626 | !-- file. |
---|
| 627 | IF ( lad_vertical_gradient_level(1) == -9999999.9_wp ) THEN |
---|
| 628 | lad_vertical_gradient_level(1) = 0.0_wp |
---|
| 629 | ENDIF |
---|
| 630 | |
---|
| 631 | ELSE |
---|
| 632 | |
---|
| 633 | ! |
---|
| 634 | !-- Use beta function for lad-profile construction |
---|
| 635 | int_bpdf = 0.0_wp |
---|
| 636 | canopy_height = pch_index * dz |
---|
| 637 | |
---|
| 638 | DO k = nzb, pch_index |
---|
| 639 | int_bpdf = int_bpdf + & |
---|
[1826] | 640 | ( ( ( zw(k) / canopy_height )**( alpha_lad-1.0_wp ) ) * & |
---|
| 641 | ( ( 1.0_wp - ( zw(k) / canopy_height ) )**( & |
---|
| 642 | beta_lad-1.0_wp ) ) & |
---|
| 643 | * ( ( zw(k+1)-zw(k) ) / canopy_height ) ) |
---|
[1484] | 644 | ENDDO |
---|
| 645 | |
---|
| 646 | ! |
---|
| 647 | !-- Preliminary lad profile (defined on w-grid) |
---|
| 648 | DO k = nzb, pch_index |
---|
[1826] | 649 | pre_lad(k) = lai_beta * & |
---|
| 650 | ( ( ( zw(k) / canopy_height )**( alpha_lad-1.0_wp ) ) & |
---|
| 651 | * ( ( 1.0_wp - ( zw(k) / canopy_height ) )**( & |
---|
| 652 | beta_lad-1.0_wp ) ) / int_bpdf & |
---|
| 653 | ) / canopy_height |
---|
[1484] | 654 | ENDDO |
---|
| 655 | |
---|
| 656 | ! |
---|
| 657 | !-- Final lad profile (defined on scalar-grid level, since most prognostic |
---|
| 658 | !-- quantities are defined there, hence, less interpolation is required |
---|
| 659 | !-- when calculating the canopy tendencies) |
---|
| 660 | lad(0) = pre_lad(0) |
---|
| 661 | DO k = nzb+1, pch_index |
---|
| 662 | lad(k) = 0.5 * ( pre_lad(k-1) + pre_lad(k) ) |
---|
| 663 | ENDDO |
---|
| 664 | |
---|
| 665 | ENDIF |
---|
| 666 | |
---|
| 667 | ! |
---|
[2213] | 668 | !-- Allocate 3D-array for the leaf area density (lad_s). |
---|
[1484] | 669 | ALLOCATE( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
| 670 | |
---|
| 671 | ! |
---|
| 672 | !-- Initialize canopy parameters cdc (canopy drag coefficient), |
---|
| 673 | !-- lsec (leaf scalar exchange coefficient), lsc (leaf surface concentration) |
---|
| 674 | !-- with the prescribed values |
---|
| 675 | cdc = canopy_drag_coeff |
---|
| 676 | lsec = leaf_scalar_exch_coeff |
---|
| 677 | lsc = leaf_surface_conc |
---|
| 678 | |
---|
| 679 | ! |
---|
| 680 | !-- Initialization of the canopy coverage in the model domain: |
---|
| 681 | !-- Setting the parameter canopy_mode = 'block' initializes a canopy, which |
---|
| 682 | !-- fully covers the domain surface |
---|
| 683 | SELECT CASE ( TRIM( canopy_mode ) ) |
---|
| 684 | |
---|
| 685 | CASE( 'block' ) |
---|
| 686 | |
---|
| 687 | DO i = nxlg, nxrg |
---|
| 688 | DO j = nysg, nyng |
---|
| 689 | lad_s(:,j,i) = lad(:) |
---|
| 690 | ENDDO |
---|
| 691 | ENDDO |
---|
| 692 | |
---|
[2007] | 693 | CASE ( 'read_from_file_3d' ) |
---|
| 694 | ! |
---|
| 695 | !-- Initialize canopy parameters cdc (canopy drag coefficient), |
---|
| 696 | !-- lsec (leaf scalar exchange coefficient), lsc (leaf surface concentration) |
---|
| 697 | !-- from file which contains complete 3D data (separate vertical profiles for |
---|
| 698 | !-- each location). |
---|
| 699 | CALL pcm_read_plant_canopy_3d |
---|
| 700 | |
---|
[1484] | 701 | CASE DEFAULT |
---|
| 702 | ! |
---|
[2007] | 703 | !-- The DEFAULT case is reached either if the parameter |
---|
| 704 | !-- canopy mode contains a wrong character string or if the |
---|
| 705 | !-- user has coded a special case in the user interface. |
---|
| 706 | !-- There, the subroutine user_init_plant_canopy checks |
---|
| 707 | !-- which of these two conditions applies. |
---|
| 708 | CALL user_init_plant_canopy |
---|
[1484] | 709 | |
---|
| 710 | END SELECT |
---|
| 711 | |
---|
| 712 | ! |
---|
[2011] | 713 | !-- Initialization of the canopy heat source distribution due to heating |
---|
| 714 | !-- of the canopy layers by incoming solar radiation, in case that a non-zero |
---|
| 715 | !-- value is set for the canopy top heat flux (cthf), which equals the |
---|
| 716 | !-- available net radiation at canopy top. |
---|
| 717 | !-- The heat source distribution is calculated by a decaying exponential |
---|
| 718 | !-- function of the downward cumulative leaf area index (cum_lai_hf), |
---|
| 719 | !-- assuming that the foliage inside the plant canopy is heated by solar |
---|
| 720 | !-- radiation penetrating the canopy layers according to the distribution |
---|
| 721 | !-- of net radiation as suggested by Brown & Covey (1966; Agric. Meteorol. 3, |
---|
| 722 | !-- 73â96). This approach has been applied e.g. by Shaw & Schumann (1992; |
---|
[2213] | 723 | !-- Bound.-Layer Meteorol. 61, 47â64). |
---|
| 724 | !-- When using the urban surface model (USM), canopy heating (pc_heating_rate) |
---|
| 725 | !-- by radiation is calculated in the USM. |
---|
| 726 | IF ( cthf /= 0.0_wp .AND. .NOT. urban_surface) THEN |
---|
| 727 | |
---|
| 728 | ALLOCATE( cum_lai_hf(nzb:nzt+1,nysg:nyng,nxlg:nxrg), & |
---|
| 729 | pc_heating_rate(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
[1484] | 730 | ! |
---|
[2011] | 731 | !-- Piecewise calculation of the cumulative leaf area index by vertical |
---|
[1484] | 732 | !-- integration of the leaf area density |
---|
| 733 | cum_lai_hf(:,:,:) = 0.0_wp |
---|
| 734 | DO i = nxlg, nxrg |
---|
| 735 | DO j = nysg, nyng |
---|
| 736 | DO k = pch_index-1, 0, -1 |
---|
| 737 | IF ( k == pch_index-1 ) THEN |
---|
| 738 | cum_lai_hf(k,j,i) = cum_lai_hf(k+1,j,i) + & |
---|
| 739 | ( 0.5_wp * lad_s(k+1,j,i) * & |
---|
| 740 | ( zw(k+1) - zu(k+1) ) ) + & |
---|
| 741 | ( 0.5_wp * ( 0.5_wp * ( lad_s(k+1,j,i) + & |
---|
| 742 | lad_s(k,j,i) ) + & |
---|
| 743 | lad_s(k+1,j,i) ) * & |
---|
| 744 | ( zu(k+1) - zw(k) ) ) |
---|
| 745 | ELSE |
---|
| 746 | cum_lai_hf(k,j,i) = cum_lai_hf(k+1,j,i) + & |
---|
| 747 | ( 0.5_wp * ( 0.5_wp * ( lad_s(k+2,j,i) + & |
---|
| 748 | lad_s(k+1,j,i) ) + & |
---|
| 749 | lad_s(k+1,j,i) ) * & |
---|
| 750 | ( zw(k+1) - zu(k+1) ) ) + & |
---|
| 751 | ( 0.5_wp * ( 0.5_wp * ( lad_s(k+1,j,i) + & |
---|
| 752 | lad_s(k,j,i) ) + & |
---|
| 753 | lad_s(k+1,j,i) ) * & |
---|
| 754 | ( zu(k+1) - zw(k) ) ) |
---|
| 755 | ENDIF |
---|
| 756 | ENDDO |
---|
| 757 | ENDDO |
---|
| 758 | ENDDO |
---|
| 759 | |
---|
| 760 | ! |
---|
[2011] | 761 | !-- Calculation of the heating rate (K/s) within the different layers of |
---|
| 762 | !-- the plant canopy |
---|
[1484] | 763 | DO i = nxlg, nxrg |
---|
| 764 | DO j = nysg, nyng |
---|
| 765 | ! |
---|
[2011] | 766 | !-- Calculation only necessary in areas covered with canopy |
---|
| 767 | IF ( cum_lai_hf(0,j,i) /= 0.0_wp ) THEN |
---|
| 768 | !-- |
---|
| 769 | !-- In areas with canopy the surface value of the canopy heat |
---|
| 770 | !-- flux distribution overrides the surface heat flux (shf) |
---|
| 771 | shf(j,i) = cthf * exp( -ext_coef * cum_lai_hf(0,j,i) ) |
---|
| 772 | ! |
---|
| 773 | !-- Within the different canopy layers the plant-canopy heating |
---|
| 774 | !-- rate (pc_heating_rate) is calculated as the vertical |
---|
| 775 | !-- divergence of the canopy heat fluxes at the top and bottom |
---|
| 776 | !-- of the respective layer |
---|
| 777 | DO k = 1, pch_index |
---|
| 778 | pc_heating_rate(k,j,i) = cthf * & |
---|
| 779 | ( exp(-ext_coef*cum_lai_hf(k,j,i)) - & |
---|
| 780 | exp(-ext_coef*cum_lai_hf(k-1,j,i)) ) / dzw(k) |
---|
| 781 | ENDDO |
---|
[1721] | 782 | ENDIF |
---|
| 783 | ENDDO |
---|
| 784 | ENDDO |
---|
[1484] | 785 | |
---|
| 786 | ENDIF |
---|
| 787 | |
---|
| 788 | |
---|
| 789 | |
---|
[1826] | 790 | END SUBROUTINE pcm_init |
---|
[1484] | 791 | |
---|
| 792 | |
---|
[2007] | 793 | !------------------------------------------------------------------------------! |
---|
| 794 | ! Description: |
---|
| 795 | ! ------------ |
---|
| 796 | !> Parin for &canopy_par for plant canopy model |
---|
| 797 | !------------------------------------------------------------------------------! |
---|
| 798 | SUBROUTINE pcm_parin |
---|
[1484] | 799 | |
---|
[2007] | 800 | |
---|
| 801 | IMPLICIT NONE |
---|
| 802 | |
---|
| 803 | CHARACTER (LEN=80) :: line !< dummy string that contains the current line of the parameter file |
---|
| 804 | |
---|
| 805 | NAMELIST /canopy_par/ alpha_lad, beta_lad, canopy_drag_coeff, & |
---|
| 806 | canopy_mode, cthf, & |
---|
| 807 | lad_surface, & |
---|
| 808 | lad_vertical_gradient, & |
---|
| 809 | lad_vertical_gradient_level, & |
---|
| 810 | lai_beta, & |
---|
| 811 | leaf_scalar_exch_coeff, & |
---|
| 812 | leaf_surface_conc, pch_index |
---|
| 813 | |
---|
| 814 | line = ' ' |
---|
| 815 | |
---|
| 816 | ! |
---|
| 817 | !-- Try to find radiation model package |
---|
| 818 | REWIND ( 11 ) |
---|
| 819 | line = ' ' |
---|
| 820 | DO WHILE ( INDEX( line, '&canopy_par' ) == 0 ) |
---|
| 821 | READ ( 11, '(A)', END=10 ) line |
---|
| 822 | ENDDO |
---|
| 823 | BACKSPACE ( 11 ) |
---|
| 824 | |
---|
| 825 | ! |
---|
| 826 | !-- Read user-defined namelist |
---|
| 827 | READ ( 11, canopy_par ) |
---|
| 828 | |
---|
| 829 | ! |
---|
| 830 | !-- Set flag that indicates that the radiation model is switched on |
---|
| 831 | plant_canopy = .TRUE. |
---|
| 832 | |
---|
| 833 | 10 CONTINUE |
---|
| 834 | |
---|
| 835 | |
---|
| 836 | END SUBROUTINE pcm_parin |
---|
| 837 | |
---|
| 838 | |
---|
| 839 | |
---|
[1484] | 840 | !------------------------------------------------------------------------------! |
---|
| 841 | ! Description: |
---|
| 842 | ! ------------ |
---|
[2007] | 843 | ! |
---|
| 844 | !> Loads 3D plant canopy data from file. File format is as follows: |
---|
| 845 | !> |
---|
| 846 | !> num_levels |
---|
| 847 | !> dtype,x,y,value(nzb),value(nzb+1), ... ,value(nzb+num_levels-1) |
---|
| 848 | !> dtype,x,y,value(nzb),value(nzb+1), ... ,value(nzb+num_levels-1) |
---|
| 849 | !> dtype,x,y,value(nzb),value(nzb+1), ... ,value(nzb+num_levels-1) |
---|
| 850 | !> ... |
---|
| 851 | !> |
---|
| 852 | !> i.e. first line determines number of levels and further lines represent plant |
---|
| 853 | !> canopy data, one line per column and variable. In each data line, |
---|
| 854 | !> dtype represents variable to be set: |
---|
| 855 | !> |
---|
| 856 | !> dtype=1: leaf area density (lad_s) |
---|
[2213] | 857 | !> dtype=2....n: some additional plant canopy input data quantity |
---|
[2007] | 858 | !> |
---|
| 859 | !> Zeros are added automatically above num_levels until top of domain. Any |
---|
| 860 | !> non-specified (x,y) columns have zero values as default. |
---|
| 861 | !------------------------------------------------------------------------------! |
---|
| 862 | SUBROUTINE pcm_read_plant_canopy_3d |
---|
[2213] | 863 | |
---|
| 864 | USE control_parameters, & |
---|
| 865 | ONLY: message_string, passive_scalar |
---|
[2007] | 866 | |
---|
[2213] | 867 | USE indices, & |
---|
| 868 | ONLY: nbgp |
---|
| 869 | |
---|
| 870 | IMPLICIT NONE |
---|
[2007] | 871 | |
---|
[2213] | 872 | INTEGER(iwp) :: dtype !< type of input data (1=lad) |
---|
| 873 | INTEGER(iwp) :: i, j !< running index |
---|
| 874 | INTEGER(iwp) :: nzp !< number of vertical layers of plant canopy |
---|
| 875 | INTEGER(iwp) :: nzpltop !< |
---|
| 876 | INTEGER(iwp) :: nzpl !< |
---|
| 877 | |
---|
| 878 | REAL(wp), DIMENSION(:), ALLOCATABLE :: col !< vertical column of input data |
---|
[2007] | 879 | |
---|
[2213] | 880 | ! |
---|
| 881 | !-- Initialize lad_s array |
---|
| 882 | lad_s = 0.0_wp |
---|
| 883 | |
---|
| 884 | ! |
---|
| 885 | !-- Open and read plant canopy input data |
---|
| 886 | OPEN(152, file='PLANT_CANOPY_DATA_3D', access='SEQUENTIAL', & |
---|
| 887 | action='READ', status='OLD', form='FORMATTED', err=515) |
---|
| 888 | READ(152, *, err=516, end=517) nzp !< read first line = number of vertical layers |
---|
| 889 | |
---|
| 890 | ALLOCATE(col(0:nzp-1)) |
---|
[2007] | 891 | |
---|
[2213] | 892 | DO |
---|
| 893 | READ(152, *, err=516, end=517) dtype, i, j, col(:) |
---|
| 894 | IF ( i < nxlg .or. i > nxrg .or. j < nysg .or. j > nyng ) CYCLE |
---|
[2007] | 895 | |
---|
[2213] | 896 | SELECT CASE (dtype) |
---|
| 897 | CASE( 1 ) !< leaf area density |
---|
| 898 | ! |
---|
| 899 | !-- This is just the pure canopy layer assumed to be grounded to |
---|
| 900 | !-- a flat domain surface. At locations where plant canopy sits |
---|
| 901 | !-- on top of any kind of topography, the vertical plant column |
---|
| 902 | !-- must be "lifted", which is done in SUBROUTINE pcm_tendency. |
---|
| 903 | lad_s(0:nzp-1, j, i) = col(0:nzp-1) |
---|
| 904 | |
---|
| 905 | CASE DEFAULT |
---|
| 906 | write(message_string, '(a,i2,a)') & |
---|
| 907 | 'Unknown record type in file PLANT_CANOPY_DATA_3D: "', dtype, '"' |
---|
| 908 | CALL message( 'pcm_read_plant_canopy_3d', 'PA0530', 1, 2, 0, 6, 0 ) |
---|
| 909 | END SELECT |
---|
| 910 | ENDDO |
---|
[2007] | 911 | |
---|
[2213] | 912 | 515 message_string = 'error opening file PLANT_CANOPY_DATA_3D' |
---|
| 913 | CALL message( 'pcm_read_plant_canopy_3d', 'PA0531', 1, 2, 0, 6, 0 ) |
---|
[2007] | 914 | |
---|
[2213] | 915 | 516 message_string = 'error reading file PLANT_CANOPY_DATA_3D' |
---|
| 916 | CALL message( 'pcm_read_plant_canopy_3d', 'PA0532', 1, 2, 0, 6, 0 ) |
---|
| 917 | |
---|
| 918 | 517 CLOSE(152) |
---|
| 919 | DEALLOCATE(col) |
---|
| 920 | |
---|
| 921 | CALL exchange_horiz( lad_s, nbgp ) |
---|
[2007] | 922 | |
---|
| 923 | END SUBROUTINE pcm_read_plant_canopy_3d |
---|
| 924 | |
---|
| 925 | |
---|
| 926 | |
---|
| 927 | !------------------------------------------------------------------------------! |
---|
| 928 | ! Description: |
---|
| 929 | ! ------------ |
---|
[1682] | 930 | !> Calculation of the tendency terms, accounting for the effect of the plant |
---|
| 931 | !> canopy on momentum and scalar quantities. |
---|
| 932 | !> |
---|
| 933 | !> The canopy is located where the leaf area density lad_s(k,j,i) > 0.0 |
---|
[1826] | 934 | !> (defined on scalar grid), as initialized in subroutine pcm_init. |
---|
[1682] | 935 | !> The lad on the w-grid is vertically interpolated from the surrounding |
---|
| 936 | !> lad_s. The upper boundary of the canopy is defined on the w-grid at |
---|
| 937 | !> k = pch_index. Here, the lad is zero. |
---|
| 938 | !> |
---|
| 939 | !> The canopy drag must be limited (previously accounted for by calculation of |
---|
| 940 | !> a limiting canopy timestep for the determination of the maximum LES timestep |
---|
| 941 | !> in subroutine timestep), since it is physically impossible that the canopy |
---|
| 942 | !> drag alone can locally change the sign of a velocity component. This |
---|
| 943 | !> limitation is realized by calculating preliminary tendencies and velocities. |
---|
| 944 | !> It is subsequently checked if the preliminary new velocity has a different |
---|
| 945 | !> sign than the current velocity. If so, the tendency is limited in a way that |
---|
| 946 | !> the velocity can at maximum be reduced to zero by the canopy drag. |
---|
| 947 | !> |
---|
| 948 | !> |
---|
| 949 | !> Call for all grid points |
---|
[1484] | 950 | !------------------------------------------------------------------------------! |
---|
[1826] | 951 | SUBROUTINE pcm_tendency( component ) |
---|
[138] | 952 | |
---|
| 953 | |
---|
[1320] | 954 | USE control_parameters, & |
---|
[1484] | 955 | ONLY: dt_3d, message_string |
---|
[1320] | 956 | |
---|
| 957 | USE kinds |
---|
| 958 | |
---|
[138] | 959 | IMPLICIT NONE |
---|
| 960 | |
---|
[1682] | 961 | INTEGER(iwp) :: component !< prognostic variable (u,v,w,pt,q,e) |
---|
| 962 | INTEGER(iwp) :: i !< running index |
---|
| 963 | INTEGER(iwp) :: j !< running index |
---|
| 964 | INTEGER(iwp) :: k !< running index |
---|
[1721] | 965 | INTEGER(iwp) :: kk !< running index for flat lad arrays |
---|
[1484] | 966 | |
---|
[1682] | 967 | REAL(wp) :: ddt_3d !< inverse of the LES timestep (dt_3d) |
---|
| 968 | REAL(wp) :: lad_local !< local lad value |
---|
| 969 | REAL(wp) :: pre_tend !< preliminary tendency |
---|
| 970 | REAL(wp) :: pre_u !< preliminary u-value |
---|
| 971 | REAL(wp) :: pre_v !< preliminary v-value |
---|
| 972 | REAL(wp) :: pre_w !< preliminary w-value |
---|
[1484] | 973 | |
---|
| 974 | |
---|
| 975 | ddt_3d = 1.0_wp / dt_3d |
---|
[138] | 976 | |
---|
| 977 | ! |
---|
[1484] | 978 | !-- Compute drag for the three velocity components and the SGS-TKE: |
---|
[138] | 979 | SELECT CASE ( component ) |
---|
| 980 | |
---|
| 981 | ! |
---|
| 982 | !-- u-component |
---|
| 983 | CASE ( 1 ) |
---|
| 984 | DO i = nxlu, nxr |
---|
| 985 | DO j = nys, nyn |
---|
[1721] | 986 | DO k = nzb_u_inner(j,i)+1, nzb_u_inner(j,i)+pch_index |
---|
[1484] | 987 | |
---|
[1721] | 988 | kk = k - nzb_u_inner(j,i) !- lad arrays are defined flat |
---|
[1484] | 989 | ! |
---|
| 990 | !-- In order to create sharp boundaries of the plant canopy, |
---|
| 991 | !-- the lad on the u-grid at index (k,j,i) is equal to |
---|
| 992 | !-- lad_s(k,j,i), rather than being interpolated from the |
---|
| 993 | !-- surrounding lad_s, because this would yield smaller lad |
---|
| 994 | !-- at the canopy boundaries than inside of the canopy. |
---|
| 995 | !-- For the same reason, the lad at the rightmost(i+1)canopy |
---|
| 996 | !-- boundary on the u-grid equals lad_s(k,j,i). |
---|
[1721] | 997 | lad_local = lad_s(kk,j,i) |
---|
| 998 | IF ( lad_local == 0.0_wp .AND. lad_s(kk,j,i-1) > 0.0_wp )& |
---|
| 999 | THEN |
---|
| 1000 | lad_local = lad_s(kk,j,i-1) |
---|
[1484] | 1001 | ENDIF |
---|
| 1002 | |
---|
| 1003 | pre_tend = 0.0_wp |
---|
| 1004 | pre_u = 0.0_wp |
---|
| 1005 | ! |
---|
| 1006 | !-- Calculate preliminary value (pre_tend) of the tendency |
---|
| 1007 | pre_tend = - cdc * & |
---|
| 1008 | lad_local * & |
---|
| 1009 | SQRT( u(k,j,i)**2 + & |
---|
| 1010 | ( 0.25_wp * ( v(k,j,i-1) + & |
---|
| 1011 | v(k,j,i) + & |
---|
| 1012 | v(k,j+1,i) + & |
---|
| 1013 | v(k,j+1,i-1) ) & |
---|
| 1014 | )**2 + & |
---|
| 1015 | ( 0.25_wp * ( w(k-1,j,i-1) + & |
---|
| 1016 | w(k-1,j,i) + & |
---|
| 1017 | w(k,j,i-1) + & |
---|
| 1018 | w(k,j,i) ) & |
---|
| 1019 | )**2 & |
---|
| 1020 | ) * & |
---|
| 1021 | u(k,j,i) |
---|
| 1022 | |
---|
| 1023 | ! |
---|
| 1024 | !-- Calculate preliminary new velocity, based on pre_tend |
---|
| 1025 | pre_u = u(k,j,i) + dt_3d * pre_tend |
---|
| 1026 | ! |
---|
| 1027 | !-- Compare sign of old velocity and new preliminary velocity, |
---|
| 1028 | !-- and in case the signs are different, limit the tendency |
---|
| 1029 | IF ( SIGN(pre_u,u(k,j,i)) /= pre_u ) THEN |
---|
| 1030 | pre_tend = - u(k,j,i) * ddt_3d |
---|
| 1031 | ELSE |
---|
| 1032 | pre_tend = pre_tend |
---|
| 1033 | ENDIF |
---|
| 1034 | ! |
---|
| 1035 | !-- Calculate final tendency |
---|
| 1036 | tend(k,j,i) = tend(k,j,i) + pre_tend |
---|
| 1037 | |
---|
[138] | 1038 | ENDDO |
---|
| 1039 | ENDDO |
---|
| 1040 | ENDDO |
---|
| 1041 | |
---|
| 1042 | ! |
---|
| 1043 | !-- v-component |
---|
| 1044 | CASE ( 2 ) |
---|
| 1045 | DO i = nxl, nxr |
---|
| 1046 | DO j = nysv, nyn |
---|
[1721] | 1047 | DO k = nzb_v_inner(j,i)+1, nzb_v_inner(j,i)+pch_index |
---|
[1484] | 1048 | |
---|
[1721] | 1049 | kk = k - nzb_v_inner(j,i) !- lad arrays are defined flat |
---|
[1484] | 1050 | ! |
---|
| 1051 | !-- In order to create sharp boundaries of the plant canopy, |
---|
| 1052 | !-- the lad on the v-grid at index (k,j,i) is equal to |
---|
| 1053 | !-- lad_s(k,j,i), rather than being interpolated from the |
---|
| 1054 | !-- surrounding lad_s, because this would yield smaller lad |
---|
| 1055 | !-- at the canopy boundaries than inside of the canopy. |
---|
| 1056 | !-- For the same reason, the lad at the northmost(j+1) canopy |
---|
| 1057 | !-- boundary on the v-grid equals lad_s(k,j,i). |
---|
[1721] | 1058 | lad_local = lad_s(kk,j,i) |
---|
| 1059 | IF ( lad_local == 0.0_wp .AND. lad_s(kk,j-1,i) > 0.0_wp )& |
---|
| 1060 | THEN |
---|
| 1061 | lad_local = lad_s(kk,j-1,i) |
---|
[1484] | 1062 | ENDIF |
---|
| 1063 | |
---|
| 1064 | pre_tend = 0.0_wp |
---|
| 1065 | pre_v = 0.0_wp |
---|
| 1066 | ! |
---|
| 1067 | !-- Calculate preliminary value (pre_tend) of the tendency |
---|
| 1068 | pre_tend = - cdc * & |
---|
| 1069 | lad_local * & |
---|
| 1070 | SQRT( ( 0.25_wp * ( u(k,j-1,i) + & |
---|
| 1071 | u(k,j-1,i+1) + & |
---|
| 1072 | u(k,j,i) + & |
---|
| 1073 | u(k,j,i+1) ) & |
---|
| 1074 | )**2 + & |
---|
| 1075 | v(k,j,i)**2 + & |
---|
| 1076 | ( 0.25_wp * ( w(k-1,j-1,i) + & |
---|
| 1077 | w(k-1,j,i) + & |
---|
| 1078 | w(k,j-1,i) + & |
---|
| 1079 | w(k,j,i) ) & |
---|
| 1080 | )**2 & |
---|
| 1081 | ) * & |
---|
| 1082 | v(k,j,i) |
---|
| 1083 | |
---|
| 1084 | ! |
---|
| 1085 | !-- Calculate preliminary new velocity, based on pre_tend |
---|
| 1086 | pre_v = v(k,j,i) + dt_3d * pre_tend |
---|
| 1087 | ! |
---|
| 1088 | !-- Compare sign of old velocity and new preliminary velocity, |
---|
| 1089 | !-- and in case the signs are different, limit the tendency |
---|
| 1090 | IF ( SIGN(pre_v,v(k,j,i)) /= pre_v ) THEN |
---|
| 1091 | pre_tend = - v(k,j,i) * ddt_3d |
---|
| 1092 | ELSE |
---|
| 1093 | pre_tend = pre_tend |
---|
| 1094 | ENDIF |
---|
| 1095 | ! |
---|
| 1096 | !-- Calculate final tendency |
---|
| 1097 | tend(k,j,i) = tend(k,j,i) + pre_tend |
---|
| 1098 | |
---|
[138] | 1099 | ENDDO |
---|
| 1100 | ENDDO |
---|
| 1101 | ENDDO |
---|
| 1102 | |
---|
| 1103 | ! |
---|
| 1104 | !-- w-component |
---|
| 1105 | CASE ( 3 ) |
---|
| 1106 | DO i = nxl, nxr |
---|
| 1107 | DO j = nys, nyn |
---|
[1721] | 1108 | DO k = nzb_w_inner(j,i)+1, nzb_w_inner(j,i)+pch_index-1 |
---|
[1484] | 1109 | |
---|
[1721] | 1110 | kk = k - nzb_w_inner(j,i) !- lad arrays are defined flat |
---|
| 1111 | |
---|
[1484] | 1112 | pre_tend = 0.0_wp |
---|
| 1113 | pre_w = 0.0_wp |
---|
| 1114 | ! |
---|
| 1115 | !-- Calculate preliminary value (pre_tend) of the tendency |
---|
| 1116 | pre_tend = - cdc * & |
---|
| 1117 | (0.5_wp * & |
---|
[1721] | 1118 | ( lad_s(kk+1,j,i) + lad_s(kk,j,i) )) * & |
---|
[1484] | 1119 | SQRT( ( 0.25_wp * ( u(k,j,i) + & |
---|
| 1120 | u(k,j,i+1) + & |
---|
| 1121 | u(k+1,j,i) + & |
---|
| 1122 | u(k+1,j,i+1) ) & |
---|
| 1123 | )**2 + & |
---|
| 1124 | ( 0.25_wp * ( v(k,j,i) + & |
---|
| 1125 | v(k,j+1,i) + & |
---|
| 1126 | v(k+1,j,i) + & |
---|
| 1127 | v(k+1,j+1,i) ) & |
---|
| 1128 | )**2 + & |
---|
| 1129 | w(k,j,i)**2 & |
---|
| 1130 | ) * & |
---|
| 1131 | w(k,j,i) |
---|
| 1132 | ! |
---|
| 1133 | !-- Calculate preliminary new velocity, based on pre_tend |
---|
| 1134 | pre_w = w(k,j,i) + dt_3d * pre_tend |
---|
| 1135 | ! |
---|
| 1136 | !-- Compare sign of old velocity and new preliminary velocity, |
---|
| 1137 | !-- and in case the signs are different, limit the tendency |
---|
| 1138 | IF ( SIGN(pre_w,w(k,j,i)) /= pre_w ) THEN |
---|
| 1139 | pre_tend = - w(k,j,i) * ddt_3d |
---|
| 1140 | ELSE |
---|
| 1141 | pre_tend = pre_tend |
---|
| 1142 | ENDIF |
---|
| 1143 | ! |
---|
| 1144 | !-- Calculate final tendency |
---|
| 1145 | tend(k,j,i) = tend(k,j,i) + pre_tend |
---|
| 1146 | |
---|
[138] | 1147 | ENDDO |
---|
| 1148 | ENDDO |
---|
| 1149 | ENDDO |
---|
| 1150 | |
---|
| 1151 | ! |
---|
[153] | 1152 | !-- potential temperature |
---|
[138] | 1153 | CASE ( 4 ) |
---|
| 1154 | DO i = nxl, nxr |
---|
| 1155 | DO j = nys, nyn |
---|
[1721] | 1156 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1157 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
[2011] | 1158 | tend(k,j,i) = tend(k,j,i) + pc_heating_rate(kk,j,i) |
---|
[153] | 1159 | ENDDO |
---|
| 1160 | ENDDO |
---|
| 1161 | ENDDO |
---|
| 1162 | |
---|
| 1163 | ! |
---|
[1960] | 1164 | !-- humidity |
---|
[153] | 1165 | CASE ( 5 ) |
---|
| 1166 | DO i = nxl, nxr |
---|
| 1167 | DO j = nys, nyn |
---|
[1721] | 1168 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1169 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
[1484] | 1170 | tend(k,j,i) = tend(k,j,i) - & |
---|
| 1171 | lsec * & |
---|
[1721] | 1172 | lad_s(kk,j,i) * & |
---|
[1484] | 1173 | SQRT( ( 0.5_wp * ( u(k,j,i) + & |
---|
| 1174 | u(k,j,i+1) ) & |
---|
| 1175 | )**2 + & |
---|
| 1176 | ( 0.5_wp * ( v(k,j,i) + & |
---|
| 1177 | v(k,j+1,i) ) & |
---|
| 1178 | )**2 + & |
---|
| 1179 | ( 0.5_wp * ( w(k-1,j,i) + & |
---|
| 1180 | w(k,j,i) ) & |
---|
| 1181 | )**2 & |
---|
| 1182 | ) * & |
---|
| 1183 | ( q(k,j,i) - lsc ) |
---|
[153] | 1184 | ENDDO |
---|
| 1185 | ENDDO |
---|
| 1186 | ENDDO |
---|
| 1187 | |
---|
| 1188 | ! |
---|
| 1189 | !-- sgs-tke |
---|
| 1190 | CASE ( 6 ) |
---|
| 1191 | DO i = nxl, nxr |
---|
| 1192 | DO j = nys, nyn |
---|
[1721] | 1193 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1194 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
[1484] | 1195 | tend(k,j,i) = tend(k,j,i) - & |
---|
| 1196 | 2.0_wp * cdc * & |
---|
[1721] | 1197 | lad_s(kk,j,i) * & |
---|
[1484] | 1198 | SQRT( ( 0.5_wp * ( u(k,j,i) + & |
---|
| 1199 | u(k,j,i+1) ) & |
---|
| 1200 | )**2 + & |
---|
| 1201 | ( 0.5_wp * ( v(k,j,i) + & |
---|
| 1202 | v(k,j+1,i) ) & |
---|
| 1203 | )**2 + & |
---|
| 1204 | ( 0.5_wp * ( w(k,j,i) + & |
---|
| 1205 | w(k+1,j,i) ) & |
---|
| 1206 | )**2 & |
---|
| 1207 | ) * & |
---|
| 1208 | e(k,j,i) |
---|
[138] | 1209 | ENDDO |
---|
| 1210 | ENDDO |
---|
| 1211 | ENDDO |
---|
[1960] | 1212 | ! |
---|
| 1213 | !-- scalar concentration |
---|
| 1214 | CASE ( 7 ) |
---|
| 1215 | DO i = nxl, nxr |
---|
| 1216 | DO j = nys, nyn |
---|
| 1217 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1218 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
| 1219 | tend(k,j,i) = tend(k,j,i) - & |
---|
| 1220 | lsec * & |
---|
| 1221 | lad_s(kk,j,i) * & |
---|
| 1222 | SQRT( ( 0.5_wp * ( u(k,j,i) + & |
---|
| 1223 | u(k,j,i+1) ) & |
---|
| 1224 | )**2 + & |
---|
| 1225 | ( 0.5_wp * ( v(k,j,i) + & |
---|
| 1226 | v(k,j+1,i) ) & |
---|
| 1227 | )**2 + & |
---|
| 1228 | ( 0.5_wp * ( w(k-1,j,i) + & |
---|
| 1229 | w(k,j,i) ) & |
---|
| 1230 | )**2 & |
---|
| 1231 | ) * & |
---|
| 1232 | ( s(k,j,i) - lsc ) |
---|
| 1233 | ENDDO |
---|
| 1234 | ENDDO |
---|
| 1235 | ENDDO |
---|
[1484] | 1236 | |
---|
| 1237 | |
---|
[1960] | 1238 | |
---|
[138] | 1239 | CASE DEFAULT |
---|
| 1240 | |
---|
[257] | 1241 | WRITE( message_string, * ) 'wrong component: ', component |
---|
[1826] | 1242 | CALL message( 'pcm_tendency', 'PA0279', 1, 2, 0, 6, 0 ) |
---|
[138] | 1243 | |
---|
| 1244 | END SELECT |
---|
| 1245 | |
---|
[1826] | 1246 | END SUBROUTINE pcm_tendency |
---|
[138] | 1247 | |
---|
| 1248 | |
---|
| 1249 | !------------------------------------------------------------------------------! |
---|
[1484] | 1250 | ! Description: |
---|
| 1251 | ! ------------ |
---|
[1682] | 1252 | !> Calculation of the tendency terms, accounting for the effect of the plant |
---|
| 1253 | !> canopy on momentum and scalar quantities. |
---|
| 1254 | !> |
---|
| 1255 | !> The canopy is located where the leaf area density lad_s(k,j,i) > 0.0 |
---|
[1826] | 1256 | !> (defined on scalar grid), as initialized in subroutine pcm_init. |
---|
[1682] | 1257 | !> The lad on the w-grid is vertically interpolated from the surrounding |
---|
| 1258 | !> lad_s. The upper boundary of the canopy is defined on the w-grid at |
---|
| 1259 | !> k = pch_index. Here, the lad is zero. |
---|
| 1260 | !> |
---|
| 1261 | !> The canopy drag must be limited (previously accounted for by calculation of |
---|
| 1262 | !> a limiting canopy timestep for the determination of the maximum LES timestep |
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| 1263 | !> in subroutine timestep), since it is physically impossible that the canopy |
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| 1264 | !> drag alone can locally change the sign of a velocity component. This |
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| 1265 | !> limitation is realized by calculating preliminary tendencies and velocities. |
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| 1266 | !> It is subsequently checked if the preliminary new velocity has a different |
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| 1267 | !> sign than the current velocity. If so, the tendency is limited in a way that |
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| 1268 | !> the velocity can at maximum be reduced to zero by the canopy drag. |
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| 1269 | !> |
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| 1270 | !> |
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| 1271 | !> Call for grid point i,j |
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[138] | 1272 | !------------------------------------------------------------------------------! |
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[1826] | 1273 | SUBROUTINE pcm_tendency_ij( i, j, component ) |
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[138] | 1274 | |
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| 1275 | |
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[1320] | 1276 | USE control_parameters, & |
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[1484] | 1277 | ONLY: dt_3d, message_string |
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[1320] | 1278 | |
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| 1279 | USE kinds |
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| 1280 | |
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[138] | 1281 | IMPLICIT NONE |
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| 1282 | |
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[1682] | 1283 | INTEGER(iwp) :: component !< prognostic variable (u,v,w,pt,q,e) |
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| 1284 | INTEGER(iwp) :: i !< running index |
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| 1285 | INTEGER(iwp) :: j !< running index |
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| 1286 | INTEGER(iwp) :: k !< running index |
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[1721] | 1287 | INTEGER(iwp) :: kk !< running index for flat lad arrays |
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[138] | 1288 | |
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[1682] | 1289 | REAL(wp) :: ddt_3d !< inverse of the LES timestep (dt_3d) |
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| 1290 | REAL(wp) :: lad_local !< local lad value |
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| 1291 | REAL(wp) :: pre_tend !< preliminary tendency |
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| 1292 | REAL(wp) :: pre_u !< preliminary u-value |
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| 1293 | REAL(wp) :: pre_v !< preliminary v-value |
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| 1294 | REAL(wp) :: pre_w !< preliminary w-value |
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[1484] | 1295 | |
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| 1296 | |
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| 1297 | ddt_3d = 1.0_wp / dt_3d |
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| 1298 | |
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[138] | 1299 | ! |
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[1484] | 1300 | !-- Compute drag for the three velocity components and the SGS-TKE |
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[142] | 1301 | SELECT CASE ( component ) |
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[138] | 1302 | |
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| 1303 | ! |
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[142] | 1304 | !-- u-component |
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[1484] | 1305 | CASE ( 1 ) |
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[1721] | 1306 | DO k = nzb_u_inner(j,i)+1, nzb_u_inner(j,i)+pch_index |
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[138] | 1307 | |
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[1721] | 1308 | kk = k - nzb_u_inner(j,i) !- lad arrays are defined flat |
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[138] | 1309 | ! |
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[1484] | 1310 | !-- In order to create sharp boundaries of the plant canopy, |
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| 1311 | !-- the lad on the u-grid at index (k,j,i) is equal to lad_s(k,j,i), |
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| 1312 | !-- rather than being interpolated from the surrounding lad_s, |
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| 1313 | !-- because this would yield smaller lad at the canopy boundaries |
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| 1314 | !-- than inside of the canopy. |
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| 1315 | !-- For the same reason, the lad at the rightmost(i+1)canopy |
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| 1316 | !-- boundary on the u-grid equals lad_s(k,j,i). |
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[1721] | 1317 | lad_local = lad_s(kk,j,i) |
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| 1318 | IF ( lad_local == 0.0_wp .AND. lad_s(kk,j,i-1) > 0.0_wp ) THEN |
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| 1319 | lad_local = lad_s(kk,j,i-1) |
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[1484] | 1320 | ENDIF |
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| 1321 | |
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| 1322 | pre_tend = 0.0_wp |
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| 1323 | pre_u = 0.0_wp |
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| 1324 | ! |
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| 1325 | !-- Calculate preliminary value (pre_tend) of the tendency |
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| 1326 | pre_tend = - cdc * & |
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| 1327 | lad_local * & |
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| 1328 | SQRT( u(k,j,i)**2 + & |
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| 1329 | ( 0.25_wp * ( v(k,j,i-1) + & |
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| 1330 | v(k,j,i) + & |
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| 1331 | v(k,j+1,i) + & |
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| 1332 | v(k,j+1,i-1) ) & |
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| 1333 | )**2 + & |
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| 1334 | ( 0.25_wp * ( w(k-1,j,i-1) + & |
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| 1335 | w(k-1,j,i) + & |
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| 1336 | w(k,j,i-1) + & |
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| 1337 | w(k,j,i) ) & |
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| 1338 | )**2 & |
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| 1339 | ) * & |
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| 1340 | u(k,j,i) |
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| 1341 | |
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| 1342 | ! |
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| 1343 | !-- Calculate preliminary new velocity, based on pre_tend |
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| 1344 | pre_u = u(k,j,i) + dt_3d * pre_tend |
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| 1345 | ! |
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| 1346 | !-- Compare sign of old velocity and new preliminary velocity, |
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| 1347 | !-- and in case the signs are different, limit the tendency |
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| 1348 | IF ( SIGN(pre_u,u(k,j,i)) /= pre_u ) THEN |
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| 1349 | pre_tend = - u(k,j,i) * ddt_3d |
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| 1350 | ELSE |
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| 1351 | pre_tend = pre_tend |
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| 1352 | ENDIF |
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| 1353 | ! |
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| 1354 | !-- Calculate final tendency |
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| 1355 | tend(k,j,i) = tend(k,j,i) + pre_tend |
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| 1356 | ENDDO |
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| 1357 | |
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| 1358 | |
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| 1359 | ! |
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[142] | 1360 | !-- v-component |
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[1484] | 1361 | CASE ( 2 ) |
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[1721] | 1362 | DO k = nzb_v_inner(j,i)+1, nzb_v_inner(j,i)+pch_index |
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[138] | 1363 | |
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[1721] | 1364 | kk = k - nzb_v_inner(j,i) !- lad arrays are defined flat |
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[138] | 1365 | ! |
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[1484] | 1366 | !-- In order to create sharp boundaries of the plant canopy, |
---|
| 1367 | !-- the lad on the v-grid at index (k,j,i) is equal to lad_s(k,j,i), |
---|
| 1368 | !-- rather than being interpolated from the surrounding lad_s, |
---|
| 1369 | !-- because this would yield smaller lad at the canopy boundaries |
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| 1370 | !-- than inside of the canopy. |
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| 1371 | !-- For the same reason, the lad at the northmost(j+1)canopy |
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| 1372 | !-- boundary on the v-grid equals lad_s(k,j,i). |
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[1721] | 1373 | lad_local = lad_s(kk,j,i) |
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| 1374 | IF ( lad_local == 0.0_wp .AND. lad_s(kk,j-1,i) > 0.0_wp ) THEN |
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| 1375 | lad_local = lad_s(kk,j-1,i) |
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[1484] | 1376 | ENDIF |
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| 1377 | |
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| 1378 | pre_tend = 0.0_wp |
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| 1379 | pre_v = 0.0_wp |
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| 1380 | ! |
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| 1381 | !-- Calculate preliminary value (pre_tend) of the tendency |
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| 1382 | pre_tend = - cdc * & |
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| 1383 | lad_local * & |
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| 1384 | SQRT( ( 0.25_wp * ( u(k,j-1,i) + & |
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| 1385 | u(k,j-1,i+1) + & |
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| 1386 | u(k,j,i) + & |
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| 1387 | u(k,j,i+1) ) & |
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| 1388 | )**2 + & |
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| 1389 | v(k,j,i)**2 + & |
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| 1390 | ( 0.25_wp * ( w(k-1,j-1,i) + & |
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| 1391 | w(k-1,j,i) + & |
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| 1392 | w(k,j-1,i) + & |
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| 1393 | w(k,j,i) ) & |
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| 1394 | )**2 & |
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| 1395 | ) * & |
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| 1396 | v(k,j,i) |
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| 1397 | |
---|
| 1398 | ! |
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| 1399 | !-- Calculate preliminary new velocity, based on pre_tend |
---|
| 1400 | pre_v = v(k,j,i) + dt_3d * pre_tend |
---|
| 1401 | ! |
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| 1402 | !-- Compare sign of old velocity and new preliminary velocity, |
---|
| 1403 | !-- and in case the signs are different, limit the tendency |
---|
| 1404 | IF ( SIGN(pre_v,v(k,j,i)) /= pre_v ) THEN |
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| 1405 | pre_tend = - v(k,j,i) * ddt_3d |
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| 1406 | ELSE |
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| 1407 | pre_tend = pre_tend |
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| 1408 | ENDIF |
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| 1409 | ! |
---|
| 1410 | !-- Calculate final tendency |
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| 1411 | tend(k,j,i) = tend(k,j,i) + pre_tend |
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| 1412 | ENDDO |
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| 1413 | |
---|
| 1414 | |
---|
| 1415 | ! |
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[142] | 1416 | !-- w-component |
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[1484] | 1417 | CASE ( 3 ) |
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[1721] | 1418 | DO k = nzb_w_inner(j,i)+1, nzb_w_inner(j,i)+pch_index-1 |
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[138] | 1419 | |
---|
[1721] | 1420 | kk = k - nzb_w_inner(j,i) !- lad arrays are defined flat |
---|
| 1421 | |
---|
[1484] | 1422 | pre_tend = 0.0_wp |
---|
| 1423 | pre_w = 0.0_wp |
---|
[138] | 1424 | ! |
---|
[1484] | 1425 | !-- Calculate preliminary value (pre_tend) of the tendency |
---|
| 1426 | pre_tend = - cdc * & |
---|
| 1427 | (0.5_wp * & |
---|
[1721] | 1428 | ( lad_s(kk+1,j,i) + lad_s(kk,j,i) )) * & |
---|
[1484] | 1429 | SQRT( ( 0.25_wp * ( u(k,j,i) + & |
---|
| 1430 | u(k,j,i+1) + & |
---|
| 1431 | u(k+1,j,i) + & |
---|
| 1432 | u(k+1,j,i+1) ) & |
---|
| 1433 | )**2 + & |
---|
| 1434 | ( 0.25_wp * ( v(k,j,i) + & |
---|
| 1435 | v(k,j+1,i) + & |
---|
| 1436 | v(k+1,j,i) + & |
---|
| 1437 | v(k+1,j+1,i) ) & |
---|
| 1438 | )**2 + & |
---|
| 1439 | w(k,j,i)**2 & |
---|
| 1440 | ) * & |
---|
| 1441 | w(k,j,i) |
---|
| 1442 | ! |
---|
| 1443 | !-- Calculate preliminary new velocity, based on pre_tend |
---|
| 1444 | pre_w = w(k,j,i) + dt_3d * pre_tend |
---|
| 1445 | ! |
---|
| 1446 | !-- Compare sign of old velocity and new preliminary velocity, |
---|
| 1447 | !-- and in case the signs are different, limit the tendency |
---|
| 1448 | IF ( SIGN(pre_w,w(k,j,i)) /= pre_w ) THEN |
---|
| 1449 | pre_tend = - w(k,j,i) * ddt_3d |
---|
| 1450 | ELSE |
---|
| 1451 | pre_tend = pre_tend |
---|
| 1452 | ENDIF |
---|
| 1453 | ! |
---|
| 1454 | !-- Calculate final tendency |
---|
| 1455 | tend(k,j,i) = tend(k,j,i) + pre_tend |
---|
| 1456 | ENDDO |
---|
| 1457 | |
---|
| 1458 | ! |
---|
[153] | 1459 | !-- potential temperature |
---|
| 1460 | CASE ( 4 ) |
---|
[1721] | 1461 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1462 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
[2011] | 1463 | tend(k,j,i) = tend(k,j,i) + pc_heating_rate(kk,j,i) |
---|
[153] | 1464 | ENDDO |
---|
| 1465 | |
---|
| 1466 | |
---|
| 1467 | ! |
---|
[1960] | 1468 | !-- humidity |
---|
[153] | 1469 | CASE ( 5 ) |
---|
[1721] | 1470 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1471 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
[1484] | 1472 | tend(k,j,i) = tend(k,j,i) - & |
---|
| 1473 | lsec * & |
---|
[1721] | 1474 | lad_s(kk,j,i) * & |
---|
[1484] | 1475 | SQRT( ( 0.5_wp * ( u(k,j,i) + & |
---|
| 1476 | u(k,j,i+1) ) & |
---|
| 1477 | )**2 + & |
---|
| 1478 | ( 0.5_wp * ( v(k,j,i) + & |
---|
| 1479 | v(k,j+1,i) ) & |
---|
| 1480 | )**2 + & |
---|
| 1481 | ( 0.5_wp * ( w(k-1,j,i) + & |
---|
| 1482 | w(k,j,i) ) & |
---|
| 1483 | )**2 & |
---|
| 1484 | ) * & |
---|
| 1485 | ( q(k,j,i) - lsc ) |
---|
[153] | 1486 | ENDDO |
---|
| 1487 | |
---|
| 1488 | ! |
---|
[142] | 1489 | !-- sgs-tke |
---|
[1484] | 1490 | CASE ( 6 ) |
---|
[1721] | 1491 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1492 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
[1484] | 1493 | tend(k,j,i) = tend(k,j,i) - & |
---|
| 1494 | 2.0_wp * cdc * & |
---|
[1721] | 1495 | lad_s(kk,j,i) * & |
---|
[1484] | 1496 | SQRT( ( 0.5_wp * ( u(k,j,i) + & |
---|
| 1497 | u(k,j,i+1) ) & |
---|
| 1498 | )**2 + & |
---|
| 1499 | ( 0.5_wp * ( v(k,j,i) + & |
---|
| 1500 | v(k,j+1,i) ) & |
---|
| 1501 | )**2 + & |
---|
| 1502 | ( 0.5_wp * ( w(k,j,i) + & |
---|
| 1503 | w(k+1,j,i) ) & |
---|
| 1504 | )**2 & |
---|
| 1505 | ) * & |
---|
| 1506 | e(k,j,i) |
---|
| 1507 | ENDDO |
---|
[1960] | 1508 | |
---|
| 1509 | ! |
---|
| 1510 | !-- scalar concentration |
---|
| 1511 | CASE ( 7 ) |
---|
| 1512 | DO k = nzb_s_inner(j,i)+1, nzb_s_inner(j,i)+pch_index |
---|
| 1513 | kk = k - nzb_s_inner(j,i) !- lad arrays are defined flat |
---|
| 1514 | tend(k,j,i) = tend(k,j,i) - & |
---|
| 1515 | lsec * & |
---|
| 1516 | lad_s(kk,j,i) * & |
---|
| 1517 | SQRT( ( 0.5_wp * ( u(k,j,i) + & |
---|
| 1518 | u(k,j,i+1) ) & |
---|
| 1519 | )**2 + & |
---|
| 1520 | ( 0.5_wp * ( v(k,j,i) + & |
---|
| 1521 | v(k,j+1,i) ) & |
---|
| 1522 | )**2 + & |
---|
| 1523 | ( 0.5_wp * ( w(k-1,j,i) + & |
---|
| 1524 | w(k,j,i) ) & |
---|
| 1525 | )**2 & |
---|
| 1526 | ) * & |
---|
| 1527 | ( s(k,j,i) - lsc ) |
---|
| 1528 | ENDDO |
---|
[138] | 1529 | |
---|
[142] | 1530 | CASE DEFAULT |
---|
[138] | 1531 | |
---|
[257] | 1532 | WRITE( message_string, * ) 'wrong component: ', component |
---|
[1826] | 1533 | CALL message( 'pcm_tendency', 'PA0279', 1, 2, 0, 6, 0 ) |
---|
[138] | 1534 | |
---|
[142] | 1535 | END SELECT |
---|
[138] | 1536 | |
---|
[1826] | 1537 | END SUBROUTINE pcm_tendency_ij |
---|
[138] | 1538 | |
---|
[2007] | 1539 | |
---|
| 1540 | |
---|
[138] | 1541 | END MODULE plant_canopy_model_mod |
---|