| 1 | !> @file time_integration_spinup.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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| 3 | ! This file is part of PALM. |
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| 4 | ! |
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| 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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| 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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| 17 | ! Copyright 1997-2017 Leibniz Universitaet Hannover |
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| 18 | !------------------------------------------------------------------------------! |
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| 19 | ! |
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| 20 | ! Current revisions: |
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| 21 | ! ------------------ |
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| 22 | ! |
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| 23 | ! |
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| 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: time_integration_spinup.f90 2544 2017-10-13 18:09:32Z schwenkel $ |
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| 27 | ! Date and time quantities are now read from date_and_time_mod |
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| 28 | ! |
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| 29 | ! 2299 2017-06-29 10:14:38Z maronga |
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| 30 | ! Call of soil model adjusted to avoid prognostic equation for soil moisture |
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| 31 | ! during spinup. |
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| 32 | ! Better representation of diurnal cycle of near-surface temperature. |
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| 33 | ! Excluded prognostic equation for soil moisture during spinup. |
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| 34 | ! Added output of run control data for spinup. |
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| 35 | ! |
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| 36 | ! 2297 2017-06-28 14:35:57Z scharf |
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| 37 | ! bugfixes |
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| 38 | ! |
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| 39 | ! 2296 2017-06-28 07:53:56Z maronga |
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| 40 | ! Initial revision |
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| 41 | ! |
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| 42 | ! |
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| 43 | ! Description: |
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| 44 | ! ------------ |
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| 45 | !> Integration in time of the non-atmospheric model components such as land |
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| 46 | !> surface model and urban surface model |
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| 47 | !------------------------------------------------------------------------------! |
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| 48 | SUBROUTINE time_integration_spinup |
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| 49 | |
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| 50 | USE arrays_3d, & |
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| 51 | ONLY: pt, pt_p |
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| 52 | |
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| 53 | USE control_parameters, & |
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| 54 | ONLY: averaging_interval_pr, constant_diffusion, constant_flux_layer, & |
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| 55 | coupling_start_time, current_timestep_number, & |
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| 56 | data_output_during_spinup, disturbance_created, dopr_n, do_sum, & |
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| 57 | dt_averaging_input_pr, dt_dopr, dt_dots, dt_run_control, & |
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| 58 | dt_spinup, humidity, intermediate_timestep_count, & |
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| 59 | intermediate_timestep_count_max, land_surface, & |
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| 60 | simulated_time, simulated_time_chr, & |
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| 61 | skip_time_dopr, spinup, spinup_pt_amplitude, spinup_pt_mean, & |
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| 62 | spinup_time, timestep_count, timestep_scheme, time_dopr, & |
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| 63 | time_dopr_av, time_dots, time_run_control, & |
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| 64 | time_since_reference_point, urban_surface |
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| 65 | |
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| 66 | USE constants, & |
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| 67 | ONLY: pi |
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| 68 | |
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| 69 | USE cpulog, & |
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| 70 | ONLY: cpu_log, log_point, log_point_s |
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| 71 | |
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| 72 | USE date_and_time_mod, & |
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| 73 | ONLY: day_of_year_init, time_utc_init |
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| 74 | |
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| 75 | USE indices, & |
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| 76 | ONLY: nbgp, nzb, nzt, nysg, nyng, nxlg, nxrg |
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| 77 | |
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| 78 | |
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| 79 | USE land_surface_model_mod, & |
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| 80 | ONLY: lsm_energy_balance, lsm_soil_model, lsm_swap_timelevel |
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| 81 | |
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| 82 | USE pegrid, & |
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| 83 | ONLY: myid |
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| 84 | |
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| 85 | USE kinds |
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| 86 | |
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| 87 | USE radiation_model_mod, & |
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| 88 | ONLY: dt_radiation, force_radiation_call, radiation, & |
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| 89 | radiation_control, rad_sw_in, time_radiation |
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| 90 | |
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| 91 | USE statistics, & |
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| 92 | ONLY: flow_statistics_called |
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| 93 | |
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| 94 | USE surface_layer_fluxes_mod, & |
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| 95 | ONLY: surface_layer_fluxes |
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| 96 | |
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| 97 | USE surface_mod, & |
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| 98 | ONLY : surf_def_h, surf_def_v, surf_lsm_h, surf_lsm_v, surf_usm_h, & |
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| 99 | surf_usm_v |
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| 100 | |
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| 101 | USE urban_surface_mod, & |
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| 102 | ONLY: usm_material_heat_model, usm_material_model, & |
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| 103 | usm_radiation, usm_surface_energy_balance, usm_swap_timelevel |
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| 104 | |
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| 105 | |
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| 106 | |
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| 107 | |
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| 108 | IMPLICIT NONE |
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| 109 | |
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| 110 | CHARACTER (LEN=9) :: time_to_string !< |
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| 111 | |
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| 112 | INTEGER(iwp) :: i !< running index |
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| 113 | INTEGER(iwp) :: j !< running index |
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| 114 | INTEGER(iwp) :: k !< running index |
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| 115 | INTEGER(iwp) :: l !< running index |
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| 116 | INTEGER(iwp) :: m !< running index |
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| 117 | |
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| 118 | INTEGER(iwp) :: current_timestep_number_spinup = 0 !< number if timestep during spinup |
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| 119 | |
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| 120 | LOGICAL :: run_control_header_spinup = .FALSE. !< flag parameter for steering whether the header information must be output |
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| 121 | |
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| 122 | REAL(wp) :: pt_spinup !< temporary storage of temperature |
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| 123 | |
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| 124 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: pt_save !< temporary storage of temperature |
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| 125 | |
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| 126 | ALLOCATE( pt_save(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
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| 127 | |
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| 128 | CALL exchange_horiz( pt, nbgp ) |
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| 129 | pt_save = pt |
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| 130 | |
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| 131 | CALL location_message( 'starting spinup-sequence', .TRUE. ) |
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| 132 | ! |
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| 133 | !-- Start of the time loop |
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| 134 | DO WHILE ( simulated_time < spinup_time ) |
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| 135 | |
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| 136 | CALL cpu_log( log_point_s(15), 'timesteps spinup', 'start' ) |
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| 137 | |
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| 138 | ! |
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| 139 | !-- Start of intermediate step loop |
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| 140 | intermediate_timestep_count = 0 |
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| 141 | DO WHILE ( intermediate_timestep_count < & |
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| 142 | intermediate_timestep_count_max ) |
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| 143 | |
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| 144 | intermediate_timestep_count = intermediate_timestep_count + 1 |
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| 145 | |
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| 146 | ! |
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| 147 | !-- Set the steering factors for the prognostic equations which depend |
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| 148 | !-- on the timestep scheme |
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| 149 | CALL timestep_scheme_steering |
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| 150 | |
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| 151 | |
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| 152 | ! |
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| 153 | !-- Estimate a near-surface air temperature based on the position of the |
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| 154 | !-- sun and user input about mean temperature and amplitude. The time is |
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| 155 | !-- shifted by one hour to simulate a lag between air temperature and |
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| 156 | !-- incoming radiation |
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| 157 | pt_spinup = spinup_pt_mean + spinup_pt_amplitude & |
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| 158 | * solar_angle (time_utc_init + time_since_reference_point - 3600.0) |
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| 159 | |
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| 160 | ! |
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| 161 | !-- Map air temperature to all grid points in the vicinity of a surface |
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| 162 | !-- element |
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| 163 | IF ( land_surface ) THEN |
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| 164 | DO m = 1, surf_lsm_h%ns |
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| 165 | i = surf_lsm_h%i(m) |
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| 166 | j = surf_lsm_h%j(m) |
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| 167 | k = surf_lsm_h%k(m) |
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| 168 | pt(k,j,i) = pt_spinup |
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| 169 | ENDDO |
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| 170 | |
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| 171 | DO l = 0, 3 |
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| 172 | DO m = 1, surf_lsm_v(l)%ns |
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| 173 | i = surf_lsm_v(l)%i(m) |
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| 174 | j = surf_lsm_v(l)%j(m) |
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| 175 | k = surf_lsm_v(l)%k(m) |
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| 176 | pt(k,j,i) = pt_spinup |
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| 177 | ENDDO |
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| 178 | ENDDO |
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| 179 | ENDIF |
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| 180 | |
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| 181 | IF ( urban_surface ) THEN |
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| 182 | DO m = 1, surf_usm_h%ns |
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| 183 | i = surf_usm_h%i(m) |
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| 184 | j = surf_usm_h%j(m) |
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| 185 | k = surf_usm_h%k(m) |
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| 186 | pt(k,j,i) = pt_spinup |
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| 187 | ENDDO |
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| 188 | |
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| 189 | DO l = 0, 3 |
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| 190 | DO m = 1, surf_usm_v(l)%ns |
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| 191 | i = surf_usm_v(l)%i(m) |
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| 192 | j = surf_usm_v(l)%j(m) |
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| 193 | k = surf_usm_v(l)%k(m) |
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| 194 | pt(k,j,i) = pt_spinup |
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| 195 | ENDDO |
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| 196 | ENDDO |
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| 197 | ENDIF |
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| 198 | |
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| 199 | ! |
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| 200 | !-- Swap the time levels in preparation for the next time step. |
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| 201 | timestep_count = timestep_count + 1 |
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| 202 | |
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| 203 | IF ( land_surface ) THEN |
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| 204 | CALL lsm_swap_timelevel ( 0 ) |
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| 205 | ENDIF |
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| 206 | |
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| 207 | IF ( urban_surface ) THEN |
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| 208 | CALL usm_swap_timelevel ( 0 ) |
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| 209 | ENDIF |
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| 210 | |
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| 211 | IF ( land_surface ) THEN |
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| 212 | CALL lsm_swap_timelevel ( MOD( timestep_count, 2) ) |
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| 213 | ENDIF |
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| 214 | |
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| 215 | IF ( urban_surface ) THEN |
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| 216 | CALL usm_swap_timelevel ( MOD( timestep_count, 2) ) |
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| 217 | ENDIF |
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| 218 | |
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| 219 | ! |
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| 220 | !-- If required, compute virtual potential temperature |
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| 221 | IF ( humidity ) THEN |
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| 222 | CALL compute_vpt |
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| 223 | ENDIF |
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| 224 | |
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| 225 | ! |
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| 226 | !-- Compute the diffusion quantities |
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| 227 | IF ( .NOT. constant_diffusion ) THEN |
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| 228 | |
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| 229 | ! |
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| 230 | !-- First the vertical (and horizontal) fluxes in the surface |
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| 231 | !-- (constant flux) layer are computed |
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| 232 | IF ( constant_flux_layer ) THEN |
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| 233 | CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' ) |
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| 234 | CALL surface_layer_fluxes |
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| 235 | CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' ) |
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| 236 | ENDIF |
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| 237 | |
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| 238 | ! |
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| 239 | !-- If required, solve the energy balance for the surface and run soil |
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| 240 | !-- model. Call for horizontal as well as vertical surfaces. |
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| 241 | !-- The prognostic equation for soil moisure is switched off |
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| 242 | IF ( land_surface ) THEN |
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| 243 | |
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| 244 | CALL cpu_log( log_point(54), 'land_surface', 'start' ) |
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| 245 | ! |
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| 246 | !-- Call for horizontal upward-facing surfaces |
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| 247 | CALL lsm_energy_balance( .TRUE., -1 ) |
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| 248 | CALL lsm_soil_model( .TRUE., -1, .FALSE. ) |
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| 249 | ! |
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| 250 | !-- Call for northward-facing surfaces |
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| 251 | CALL lsm_energy_balance( .FALSE., 0 ) |
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| 252 | CALL lsm_soil_model( .FALSE., 0, .FALSE. ) |
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| 253 | ! |
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| 254 | !-- Call for southward-facing surfaces |
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| 255 | CALL lsm_energy_balance( .FALSE., 1 ) |
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| 256 | CALL lsm_soil_model( .FALSE., 1, .FALSE. ) |
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| 257 | ! |
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| 258 | !-- Call for eastward-facing surfaces |
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| 259 | CALL lsm_energy_balance( .FALSE., 2 ) |
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| 260 | CALL lsm_soil_model( .FALSE., 2, .FALSE. ) |
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| 261 | ! |
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| 262 | !-- Call for westward-facing surfaces |
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| 263 | CALL lsm_energy_balance( .FALSE., 3 ) |
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| 264 | CALL lsm_soil_model( .FALSE., 3, .FALSE. ) |
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| 265 | |
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| 266 | CALL cpu_log( log_point(54), 'land_surface', 'stop' ) |
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| 267 | ENDIF |
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| 268 | |
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| 269 | ! |
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| 270 | !-- If required, solve the energy balance for urban surfaces and run |
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| 271 | !-- the material heat model |
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| 272 | IF (urban_surface) THEN |
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| 273 | CALL cpu_log( log_point(74), 'urban_surface', 'start' ) |
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| 274 | CALL usm_surface_energy_balance |
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| 275 | IF ( usm_material_model ) THEN |
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| 276 | CALL usm_material_heat_model |
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| 277 | ENDIF |
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| 278 | CALL cpu_log( log_point(74), 'urban_surface', 'stop' ) |
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| 279 | ENDIF |
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| 280 | |
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| 281 | ENDIF |
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| 282 | |
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| 283 | ! |
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| 284 | !-- If required, calculate radiative fluxes and heating rates |
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| 285 | IF ( radiation .AND. intermediate_timestep_count & |
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| 286 | == intermediate_timestep_count_max ) THEN |
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| 287 | |
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| 288 | time_radiation = time_radiation + dt_spinup |
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| 289 | |
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| 290 | IF ( time_radiation >= dt_radiation .OR. force_radiation_call ) & |
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| 291 | THEN |
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| 292 | |
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| 293 | CALL cpu_log( log_point(50), 'radiation', 'start' ) |
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| 294 | |
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| 295 | IF ( .NOT. force_radiation_call ) THEN |
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| 296 | time_radiation = time_radiation - dt_radiation |
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| 297 | ENDIF |
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| 298 | |
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| 299 | CALL radiation_control |
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| 300 | |
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| 301 | CALL cpu_log( log_point(50), 'radiation', 'stop' ) |
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| 302 | |
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| 303 | IF (urban_surface) THEN |
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| 304 | CALL cpu_log( log_point(75), 'usm_radiation', 'start' ) |
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| 305 | CALL usm_radiation |
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| 306 | CALL cpu_log( log_point(75), 'usm_radiation', 'stop' ) |
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| 307 | ENDIF |
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| 308 | ENDIF |
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| 309 | ENDIF |
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| 310 | |
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| 311 | ENDDO ! Intermediate step loop |
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| 312 | |
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| 313 | ! |
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| 314 | !-- Increase simulation time and output times |
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| 315 | current_timestep_number_spinup = current_timestep_number_spinup + 1 |
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| 316 | simulated_time = simulated_time + dt_spinup |
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| 317 | simulated_time_chr = time_to_string( simulated_time ) |
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| 318 | time_since_reference_point = simulated_time - coupling_start_time |
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| 319 | |
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| 320 | IF ( data_output_during_spinup ) THEN |
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| 321 | time_dots = time_dots + dt_spinup |
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| 322 | IF ( simulated_time >= skip_time_dopr ) THEN |
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| 323 | time_dopr = time_dopr + dt_spinup |
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| 324 | ENDIF |
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| 325 | time_run_control = time_run_control + dt_spinup |
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| 326 | |
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| 327 | ! |
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| 328 | !-- Carry out statistical analysis and output at the requested output times. |
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| 329 | !-- The MOD function is used for calculating the output time counters (like |
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| 330 | !-- time_dopr) in order to regard a possible decrease of the output time |
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| 331 | !-- interval in case of restart runs |
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| 332 | |
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| 333 | ! |
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| 334 | !-- Set a flag indicating that so far no statistics have been created |
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| 335 | !-- for this time step |
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| 336 | flow_statistics_called = .FALSE. |
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| 337 | |
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| 338 | ! |
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| 339 | !-- If required, call flow_statistics for averaging in time |
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| 340 | IF ( averaging_interval_pr /= 0.0_wp .AND. & |
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| 341 | ( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. & |
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| 342 | simulated_time >= skip_time_dopr ) THEN |
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| 343 | time_dopr_av = time_dopr_av + dt_spinup |
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| 344 | IF ( time_dopr_av >= dt_averaging_input_pr ) THEN |
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| 345 | do_sum = .TRUE. |
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| 346 | time_dopr_av = MOD( time_dopr_av, & |
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| 347 | MAX( dt_averaging_input_pr, dt_spinup ) ) |
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| 348 | ENDIF |
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| 349 | ENDIF |
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| 350 | IF ( do_sum ) CALL flow_statistics |
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| 351 | |
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| 352 | ! |
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| 353 | !-- Output of profiles |
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| 354 | IF ( time_dopr >= dt_dopr ) THEN |
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| 355 | IF ( dopr_n /= 0 ) CALL data_output_profiles |
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| 356 | time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_spinup ) ) |
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| 357 | time_dopr_av = 0.0_wp ! due to averaging (see above) |
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| 358 | ENDIF |
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| 359 | |
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| 360 | ! |
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| 361 | !-- Output of time series |
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| 362 | IF ( time_dots >= dt_dots ) THEN |
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| 363 | CALL data_output_tseries |
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| 364 | time_dots = MOD( time_dots, MAX( dt_dots, dt_spinup ) ) |
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| 365 | ENDIF |
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| 366 | |
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| 367 | ENDIF |
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| 368 | |
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| 369 | ! |
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| 370 | !-- Computation and output of run control parameters. |
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| 371 | !-- This is also done whenever perturbations have been imposed |
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| 372 | ! IF ( time_run_control >= dt_run_control .OR. & |
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| 373 | ! timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) & |
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| 374 | ! THEN |
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| 375 | ! CALL run_control |
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| 376 | ! IF ( time_run_control >= dt_run_control ) THEN |
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| 377 | ! time_run_control = MOD( time_run_control, & |
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| 378 | ! MAX( dt_run_control, dt_spinup ) ) |
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| 379 | ! ENDIF |
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| 380 | ! ENDIF |
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| 381 | |
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| 382 | CALL cpu_log( log_point_s(15), 'timesteps spinup', 'stop' ) |
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| 383 | |
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| 384 | |
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| 385 | ! |
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| 386 | !-- Run control output |
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| 387 | IF ( myid == 0 ) THEN |
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| 388 | ! |
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| 389 | !-- If necessary, write header |
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| 390 | IF ( .NOT. run_control_header_spinup ) THEN |
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| 391 | CALL check_open( 15 ) |
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| 392 | WRITE ( 15, 100 ) |
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| 393 | run_control_header_spinup = .TRUE. |
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| 394 | ENDIF |
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| 395 | ! |
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| 396 | !-- Write some general information about the spinup in run control file |
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| 397 | WRITE ( 15, 101 ) current_timestep_number_spinup, simulated_time_chr, dt_spinup, pt_spinup, rad_sw_in(0,nysg,nxlg) |
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| 398 | ! |
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| 399 | !-- Write buffer contents to disc immediately |
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| 400 | FLUSH( 15 ) |
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| 401 | ENDIF |
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| 402 | |
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| 403 | |
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| 404 | |
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| 405 | ENDDO ! time loop |
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| 406 | |
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| 407 | ! |
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| 408 | !-- Write back saved temperature to the 3D arrays |
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| 409 | pt(:,:,:) = pt_save |
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| 410 | pt_p(:,:,:) = pt_save |
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| 411 | |
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| 412 | DEALLOCATE(pt_save) |
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| 413 | |
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| 414 | CALL location_message( 'finished spinup-sequence', .TRUE. ) |
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| 415 | |
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| 416 | |
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| 417 | ! |
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| 418 | !-- Formats |
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| 419 | 100 FORMAT (///'Spinup control output:'/ & |
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| 420 | '----------------------------------------'// & |
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| 421 | 'ITER. HH:MM:SS DT PT(z_MO) SWD'/ & |
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| 422 | '----------------------------------------') |
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| 423 | 101 FORMAT (I5,2X,A9,1X,F6.2,3X,F6.2,2X,F6.2) |
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| 424 | |
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| 425 | CONTAINS |
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| 426 | |
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| 427 | ! |
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| 428 | !-- Returns the cosine of the solar zenith angle at a given time. This routine |
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| 429 | !-- is similar to that for calculation zenith (see radiation_model_mod.f90) |
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| 430 | FUNCTION solar_angle( local_time ) |
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| 431 | |
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| 432 | USE constants, & |
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| 433 | ONLY: pi |
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| 434 | |
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| 435 | USE kinds |
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| 436 | |
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| 437 | USE radiation_model_mod, & |
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| 438 | ONLY: decl_1, decl_2, decl_3, lat, lon |
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| 439 | |
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| 440 | IMPLICIT NONE |
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| 441 | |
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| 442 | |
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| 443 | REAL(wp) :: solar_angle !< cosine of the solar zenith angle |
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| 444 | |
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| 445 | REAL(wp) :: day !< day of the year |
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| 446 | REAL(wp) :: declination !< solar declination angle |
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| 447 | REAL(wp) :: hour_angle !< solar hour angle |
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| 448 | REAL(wp) :: time_utc !< current time in UTC |
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| 449 | REAL(wp), INTENT(IN) :: local_time |
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| 450 | ! |
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| 451 | !-- Calculate current day and time based on the initial values and simulation |
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| 452 | !-- time |
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| 453 | |
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| 454 | day = day_of_year_init + INT(FLOOR( local_time / 86400.0_wp ), KIND=iwp) |
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| 455 | time_utc = MOD(local_time, 86400.0_wp) |
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| 456 | |
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| 457 | |
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| 458 | ! |
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| 459 | !-- Calculate solar declination and hour angle |
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| 460 | declination = ASIN( decl_1 * SIN(decl_2 * REAL(day, KIND=wp) - decl_3) ) |
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| 461 | hour_angle = 2.0_wp * pi * (time_utc / 86400.0_wp) + lon - pi |
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| 462 | |
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| 463 | ! |
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| 464 | !-- Calculate cosine of solar zenith angle |
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| 465 | solar_angle = SIN(lat) * SIN(declination) + COS(lat) * COS(declination) & |
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| 466 | * COS(hour_angle) |
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| 467 | |
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| 468 | |
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| 469 | END FUNCTION solar_angle |
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| 470 | |
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| 471 | |
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| 472 | END SUBROUTINE time_integration_spinup |
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