| 1 | !> @file chem_photolysis_mod.f90 |
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| 2 | !------------------------------------------------------------------------------! |
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| 3 | ! This file is part of the PALM model system. |
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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 2018-2018 Leibniz Universitaet Hannover |
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| 18 | ! Copyright 2018-2018 Karlsruhe Institute of Technology |
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| 19 | !------------------------------------------------------------------------------! |
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| 20 | ! |
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| 21 | ! Current revisions: |
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| 22 | ! ----------------- |
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| 23 | ! |
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| 24 | ! |
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| 25 | ! Former revisions: |
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| 26 | ! ----------------- |
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| 27 | ! $Id: chem_photolysis_mod.f90 3298 2018-10-02 12:21:11Z raasch $ |
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| 28 | ! Moved USE radiation_model_mod from MODULE section into Subroutine |
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| 29 | ! in order to use constant photolysis without radiation module (forkel) |
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| 30 | ! |
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| 31 | ! 3287 2018-09-28 10:19:58Z forkel |
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| 32 | ! Modularization of all bulk cloud physics code components |
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| 33 | ! |
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| 34 | ! 3241 2018-09-12 15:02:00Z raasch |
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| 35 | ! unused variables commented |
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| 36 | ! |
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| 37 | ! 2766 2018-01-22 17:17:47Z kanani |
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| 38 | ! Removed preprocessor directive __chem |
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| 39 | ! |
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| 40 | ! 2718 2018-01-02 08:49:38Z maronga |
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| 41 | ! Initial revision |
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| 42 | ! |
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| 43 | ! |
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| 44 | ! Authors: |
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| 45 | ! -------- |
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| 46 | ! @author Renate Forkel |
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| 47 | ! |
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| 48 | !------------------------------------------------------------------------------! |
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| 49 | ! Description: |
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| 50 | ! ------------ |
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| 51 | !> photolysis models and interfaces (Adapted from photolysis_model_mod.f90) |
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| 52 | !> @todo Alles! |
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| 53 | !------------------------------------------------------------------------------! |
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| 54 | MODULE chem_photolysis_mod |
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| 55 | |
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| 56 | ! USE arrays_3d, & |
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| 57 | ! ONLY: dzw, q, ql, zu, zw |
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| 58 | |
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| 59 | USE control_parameters, & |
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| 60 | ONLY: time_since_reference_point |
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| 61 | |
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| 62 | USE pegrid, ONLY: myid, threads_per_task |
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| 63 | |
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| 64 | USE indices, & |
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| 65 | ONLY: nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt |
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| 66 | |
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| 67 | USE control_parameters, & |
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| 68 | ONLY: initializing_actions |
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| 69 | |
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| 70 | USE chem_gasphase_mod, & |
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| 71 | ONLY: nphot, phot_names, phot |
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| 72 | |
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| 73 | USE chemistry_model_mod, & |
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| 74 | ONLY: phot_frequen, photolysis_scheme |
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| 75 | |
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| 76 | USE chem_modules, & |
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| 77 | ONLY: chem_debug2 |
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| 78 | |
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| 79 | USE kinds |
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| 80 | |
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| 81 | #if defined ( __netcdf ) |
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| 82 | USE NETCDF |
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| 83 | #endif |
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| 84 | |
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| 85 | |
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| 86 | IMPLICIT NONE |
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| 87 | |
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| 88 | |
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| 89 | ! LOGICAL :: unscheduled_photolysis_calls = .TRUE., & !< flag parameter indicating whether additional calls of the photolysis code are allowed |
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| 90 | ! constant_albedo = .FALSE., & !< flag parameter indicating whether the albedo may change depending on zenith |
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| 91 | ! force_photolysis_call = .FALSE., & !< flag parameter for unscheduled photolysis calls |
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| 92 | ! photolysis = .FALSE., & !< flag parameter indicating whether the photolysis model is used |
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| 93 | ! sun_up = .TRUE., & !< flag parameter indicating whether the sun is up or down |
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| 94 | ! photolysis = .TRUE., & !< flag parameter indicing whether photolysis shall be calculated |
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| 95 | ! sun_direction = .FALSE. !< flag parameter indicing whether solar direction shall be calculated |
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| 96 | |
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| 97 | !-- Parameters for constant photolysis frequencies |
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| 98 | INTEGER,PARAMETER :: nconst = 15 !< available predefined photolysis prequencies for constant |
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| 99 | |
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| 100 | ! Names for predefined fixed photolysis frequencies at zenith angle 0 |
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| 101 | CHARACTER(LEN=10), PARAMETER, DIMENSION(nconst) :: names_c = (/ & |
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| 102 | 'J_O31D ','J_O33P ','J_NO2 ','J_HNO3 ','J_RCHO ', & |
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| 103 | 'J ','J ','J ','J ','J ', & |
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| 104 | 'J ','J ','J ','J ','J ' /) |
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| 105 | ! Photolysis frequency at zenith angle 0 in 1/s |
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| 106 | REAL(wp), PARAMETER, DIMENSION(nconst) :: phot0 = (/ & |
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| 107 | 2.489E-05_wp,3.556E-04_wp, 8.89E-03_wp,5.334E-07_wp,3.734E-05_wp, & |
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| 108 | 0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp, & |
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| 109 | 0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp /) |
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| 110 | |
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| 111 | |
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| 112 | !-- Parameters for simple photolysis frequencies |
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| 113 | INTEGER,PARAMETER :: nsimple = 15 !< available predefined photolysis prequencies for simpel parameterisation |
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| 114 | ! Names for simple photolysis frequencies parameterisation ( |
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| 115 | CHARACTER(LEN=10), PARAMETER, DIMENSION(nsimple) :: names_s = (/ & |
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| 116 | 'J_O31D ','J_O33P ','J_H2O2 ','J_NO2 ','J_NO3_A ', & |
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| 117 | 'J_NO3_B ','J_HONO ','J_HNO3 ','J_HCHO_A ','J_HCHO_B ', & |
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| 118 | 'J_CH3CHO ','J ','J ','J ','J_RCHO ' /) |
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| 119 | |
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| 120 | !-- Parameters for simeple photolysis frequencies from MCM (http://mcm.leeds.ac.uk/MCM) |
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| 121 | !-- Saunders et al., 2003, Atmos. Chem. Phys., 3, 161-180 |
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| 122 | REAL(wp), PARAMETER, DIMENSION(nconst) :: par_l = (/ & |
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| 123 | 6.073E-05_wp,4.775E-04_wp,1.041E-05_wp,1.165E-02_wp,2.485E-02_wp, & |
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| 124 | 1.747E-01_wp,2.644E-03_wp,9.312E-07_wp,4.642E-05_wp,6.853E-05_wp, & |
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| 125 | 7.344E-06_wp,0.0000E00_wp,0.0000E00_wp,0.000E00_wp, 6.853E-05_wp /) |
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| 126 | |
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| 127 | REAL(wp), PARAMETER, DIMENSION(nconst) :: par_m = (/ & |
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| 128 | 1.743_wp, 0.298_wp, 0.723_wp, 0.244_wp, 0.168_wp, & |
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| 129 | 0.155_wp, 0.261_wp, 1.230_wp, 0.762_wp, 0.477_wp, & |
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| 130 | 1.202_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.477_wp /) |
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| 131 | |
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| 132 | REAL(wp), PARAMETER, DIMENSION(nconst) :: par_n = (/ & |
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| 133 | 0.474_wp, 0.080_wp, 0.279_wp, 0.267_wp, 0.108_wp, & |
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| 134 | 0.125_wp, 0.288_wp, 0.307_wp, 0.353_wp, 0.323_wp, & |
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| 135 | 0.417_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.323_wp /) |
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| 136 | |
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| 137 | |
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| 138 | REAL(wp) :: time_photolysis = 0.0_wp, & !< time since last call of photolysis code |
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| 139 | dt_photolysis = 0.0_wp, & !< hotolysis model timestep |
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| 140 | skip_time_do_photolysis = 0.0_wp !< Radiation model is not called before this time |
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| 141 | |
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| 142 | REAL(wp) :: cosz = 0.7_wp !< cosine of Zenith angle (45 deg, if not specified otherwise) |
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| 143 | |
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| 144 | ! |
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| 145 | INTERFACE photolysis_constant |
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| 146 | MODULE PROCEDURE photolysis_constant |
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| 147 | END INTERFACE photolysis_constant |
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| 148 | |
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| 149 | INTERFACE photolysis_simple |
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| 150 | MODULE PROCEDURE photolysis_simple |
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| 151 | END INTERFACE photolysis_simple |
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| 152 | ! |
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| 153 | ! INTERFACE photolysis_fastj |
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| 154 | ! MODULE PROCEDURE photolysis_fastj |
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| 155 | ! END INTERFACE photolysis_fastj |
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| 156 | ! |
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| 157 | INTERFACE photolysis_control |
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| 158 | MODULE PROCEDURE photolysis_control |
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| 159 | END INTERFACE photolysis_control |
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| 160 | |
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| 161 | |
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| 162 | SAVE |
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| 163 | |
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| 164 | PRIVATE |
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| 165 | |
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| 166 | PUBLIC photolysis_control |
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| 167 | |
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| 168 | PUBLIC photolysis_scheme |
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| 169 | ! |
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| 170 | |
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| 171 | CONTAINS |
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| 172 | |
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| 173 | |
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| 174 | !------------------------------------------------------------------------------! |
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| 175 | ! Description: |
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| 176 | ! ------------ |
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| 177 | !> This subroutine controls the calls of the photolysis schemes |
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| 178 | !------------------------------------------------------------------------------! |
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| 179 | SUBROUTINE photolysis_control |
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| 180 | |
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| 181 | IMPLICIT NONE |
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| 182 | |
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| 183 | SELECT CASE ( TRIM( photolysis_scheme ) ) |
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| 184 | |
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| 185 | CASE ( 'constant' ) |
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| 186 | CALL photolysis_constant |
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| 187 | |
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| 188 | CASE ( 'simple' ) |
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| 189 | CALL photolysis_simple |
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| 190 | |
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| 191 | ! CASE ( 'fastj' ) |
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| 192 | ! CALL photolysis_fastj |
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| 193 | |
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| 194 | CASE DEFAULT |
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| 195 | |
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| 196 | END SELECT |
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| 197 | |
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| 198 | |
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| 199 | END SUBROUTINE photolysis_control |
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| 200 | |
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| 201 | |
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| 202 | !------------------------------------------------------------------------------! |
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| 203 | ! Description: |
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| 204 | ! ------------ |
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| 205 | !> This scheme keeps the prescribed net radiation constant during the run |
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| 206 | !> Default zenith angle is 45 deg |
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| 207 | !------------------------------------------------------------------------------! |
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| 208 | SUBROUTINE photolysis_constant |
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| 209 | |
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| 210 | IMPLICIT NONE |
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| 211 | |
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| 212 | INTEGER(iwp) :: iphot,iav !< loop indix for photolysis reaction |
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| 213 | |
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| 214 | DO iphot = 1,nphot |
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| 215 | DO iav = 1,nconst |
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| 216 | IF ( TRIM( names_c(iav) ) == TRIM( phot_names(iphot) ) ) then |
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| 217 | !-- Prescribe fixed photolysis frequencies [1/s] |
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| 218 | phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = & |
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| 219 | phot0(iav) * cosz |
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| 220 | ENDIF |
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| 221 | ENDDO |
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| 222 | ENDDO |
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| 223 | |
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| 224 | END SUBROUTINE photolysis_constant |
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| 225 | |
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| 226 | |
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| 227 | !------------------------------------------------------------------------------! |
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| 228 | ! Description: |
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| 229 | ! ------------ |
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| 230 | !> This scheme applies a simple parameterisation for clear sky photolysis frequencies |
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| 231 | !> from the Master Chemical Mechanism, MCM v3.2 (http://mcm.leeds.ac.uk/MCM). |
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| 232 | !> Reference: Saunders et al., Atmos. Chem. Phys., 3, 161, 2003 |
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| 233 | !------------------------------------------------------------------------------! |
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| 234 | SUBROUTINE photolysis_simple |
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| 235 | |
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| 236 | USE radiation_model_mod, & |
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| 237 | ONLY: calc_zenith, zenith |
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| 238 | |
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| 239 | IMPLICIT NONE |
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| 240 | |
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| 241 | INTEGER(iwp) :: iphot,iav !< loop indix for photolysis reaction |
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| 242 | REAL(wp) :: coszi !< 1./cosine of zenith angle |
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| 243 | |
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| 244 | DO iphot = 1,nphot |
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| 245 | phot_frequen(iphot)%freq = 0.0_wp |
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| 246 | ENDDO |
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| 247 | |
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| 248 | CALL calc_zenith |
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| 249 | |
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| 250 | IF ( zenith(0) > 0.0_wp ) THEN |
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| 251 | coszi = 1. / zenith(0) |
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| 252 | |
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| 253 | DO iphot = 1,nphot |
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| 254 | DO iav = 1,nsimple |
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| 255 | IF ( TRIM( names_s(iav) ) == TRIM( phot_names(iphot) ) ) then |
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| 256 | phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = & |
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| 257 | par_l(iav) * zenith(0)**par_m(iav) * EXP( -par_n(iav) * coszi ) |
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| 258 | ENDIF |
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| 259 | ENDDO |
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| 260 | ENDDO |
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| 261 | ENDIF |
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| 262 | END SUBROUTINE photolysis_simple |
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| 263 | |
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| 264 | END MODULE chem_photolysis_mod |
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