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 Mar 28, 2019 6:09:50 PM (5 years ago)
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palm/trunk/SOURCE/chem_photolysis_mod.f90
r3824 r3838 26 26 !  27 27 ! $Id$ 28 ! some formatting and comments added 29 ! 30 ! 3824 20190327 15:56:16Z pavelkrc 28 31 ! unused variables removed 29 32 ! … … 53 56 !  54 57 !> photolysis models and interfaces (Adapted from photolysis_model_mod.f90) 55 !> @todo Alles!58 !> @todo more complex scheme, add shading 56 59 !! 57 60 MODULE chem_photolysis_mod … … 63 66 ONLY: time_since_reference_point 64 67 65 USE pegrid, ONLY: myid, threads_per_task 68 USE pegrid, & 69 ONLY: myid, threads_per_task 66 70 67 71 USE indices, & … … 102 106 103 107 ! Names for predefined fixed photolysis frequencies at zenith angle 0 104 CHARACTER(LEN=10), PARAMETER, DIMENSION(nconst) :: names_c = (/ &105 'J_O31D ','J_O33P ','J_NO2 ','J_HNO3 ','J_RCHO ', &106 'J ','J ','J ','J ','J ', &108 CHARACTER(LEN=10), PARAMETER, DIMENSION(nconst) :: names_c = (/ & 109 'J_O31D ','J_O33P ','J_NO2 ','J_HNO3 ','J_RCHO ', & 110 'J ','J ','J ','J ','J ', & 107 111 'J ','J ','J ','J ','J ' /) 108 ! Photolysis frequency at zenith angle 0 in 1/s109 REAL(wp), PARAMETER, DIMENSION(nconst) :: phot0 = (/ &110 2.489E05_wp,3.556E04_wp, 8.89E03_wp,5.334E07_wp,3.734E05_wp, &111 0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp, &112 ! Photolysis frequency at zenith angle 0 degrees in 1/s 113 REAL(wp), PARAMETER, DIMENSION(nconst) :: phot0 = (/ & 114 2.489E05_wp,3.556E04_wp, 8.89E03_wp,5.334E07_wp,3.734E05_wp, & 115 0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp, & 112 116 0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp,0.0000E00_wp /) 113 117 114 115 ! Parameters for simple photolysis frequencies116 INTEGER,PARAMETER :: nsimple = 15 !< available predefined photolysis prequencies for simpelparameterisation118 ! Parameters for simple photolysis frequencies from MCM (http://mcm.leeds.ac.uk/MCM) 119 ! Saunders et al., 2003, Atmos. Chem. Phys., 3, 161180 120 INTEGER,PARAMETER :: nsimple = 15 !< available predefined photolysis prequencies for simple parameterisation 117 121 ! Names for simple photolysis frequencies parameterisation ( 118 CHARACTER(LEN=10), PARAMETER, DIMENSION(nsimple) :: names_s = (/&119 'J_O31D ','J_O33P ','J_H2O2 ','J_NO2 ','J_NO3_A ', &120 'J_NO3_B ','J_HONO ','J_HNO3 ','J_HCHO_A ','J_HCHO_B ', &122 CHARACTER(LEN=10), PARAMETER, DIMENSION(nsimple) :: names_s = (/ & 123 'J_O31D ','J_O33P ','J_H2O2 ','J_NO2 ','J_NO3_A ', & 124 'J_NO3_B ','J_HONO ','J_HNO3 ','J_HCHO_A ','J_HCHO_B ', & 121 125 'J_CH3CHO ','J ','J ','J ','J_RCHO ' /) 122 126 123 ! Parameters for simeple photolysis frequencies from MCM (http://mcm.leeds.ac.uk/MCM)124 ! Saunders et al., 2003, Atmos. Chem. Phys., 3, 161180125 REAL(wp), PARAMETER, DIMENSION(nconst) :: par_l = (/&126 6.073E05_wp,4.775E04_wp,1.041E05_wp,1.165E02_wp,2.485E02_wp, &127 1.747E01_wp,2.644E03_wp,9.312E07_wp,4.642E05_wp,6.853E05_wp, &128 7.344E06_wp,0.0000E00_wp,0.0000E00_wp,0.000E00_wp, 6.853E05_wp /)129 130 REAL(wp), PARAMETER, DIMENSION(nconst) :: par_m = (/&131 1.743_wp, 0.298_wp, 0.723_wp, 0.244_wp, 0.168_wp, &132 0.155_wp, 0.261_wp, 1.230_wp, 0.762_wp, 0.477_wp, &133 1.202_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.477_wp /)134 135 REAL(wp), PARAMETER, DIMENSION(nconst) :: par_n = (/&136 0.474_wp, 0.080_wp, 0.279_wp, 0.267_wp, 0.108_wp, &137 0.125_wp, 0.288_wp, 0.307_wp, 0.353_wp, 0.323_wp, &138 0.417_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.323_wp /)139 140 141 REAL(wp) :: cosz = 0.7_wp !< cosine of Zenith angle (45 deg, if not specified otherwise)127 ! Species dependent parameters for simple photolysis frequencies from MCM (http://mcm.leeds.ac.uk/MCM) 128 ! J = l*COSx@m*EXP(n*SECx) with l,m,n named par_l etc., x is the zenith angle 129 REAL(wp), PARAMETER, DIMENSION(nconst) :: par_l = (/ & 130 6.073E05_wp,4.775E04_wp,1.041E05_wp,1.165E02_wp,2.485E02_wp, & 131 1.747E01_wp,2.644E03_wp,9.312E07_wp,4.642E05_wp,6.853E05_wp, & 132 7.344E06_wp,0.0000E00_wp,0.0000E00_wp,0.000E00_wp, 6.853E05_wp /) 133 134 REAL(wp), PARAMETER, DIMENSION(nconst) :: par_m = (/ & 135 1.743_wp, 0.298_wp, 0.723_wp, 0.244_wp, 0.168_wp, & 136 0.155_wp, 0.261_wp, 1.230_wp, 0.762_wp, 0.477_wp, & 137 1.202_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.477_wp /) 138 139 REAL(wp), PARAMETER, DIMENSION(nconst) :: par_n = (/ & 140 0.474_wp, 0.080_wp, 0.279_wp, 0.267_wp, 0.108_wp, & 141 0.125_wp, 0.288_wp, 0.307_wp, 0.353_wp, 0.323_wp, & 142 0.417_wp, 0.000_wp, 0.000_wp, 0.000_wp, 0.323_wp /) 143 144 145 REAL(wp) :: cosz = 0.7_wp !< cosine of fixed zenith angle (45 deg, if not specified otherwise) 142 146 143 147 ! … … 158 162 END INTERFACE photolysis_control 159 163 160 161 164 SAVE 162 165 … … 166 169 167 170 PUBLIC photolysis_scheme 168 !169 171 170 172 CONTAINS … … 176 178 !> This subroutine controls the calls of the photolysis schemes 177 179 !! 178 180 SUBROUTINE photolysis_control 179 181 180 181 182 183 184 185 182 IMPLICIT NONE 183 184 SELECT CASE ( TRIM( photolysis_scheme ) ) 185 186 CASE ( 'constant' ) 187 CALL photolysis_constant 186 188 187 188 189 CASE ( 'simple' ) 190 CALL photolysis_simple 189 191 190 ! 191 ! 192 193 194 195 196 197 198 192 ! CASE ( 'fastj' ) 193 ! CALL photolysis_fastj 194 195 CASE DEFAULT 196 197 END SELECT 198 199 200 END SUBROUTINE photolysis_control 199 201 200 202 … … 205 207 !> Default zenith angle is 45 deg 206 208 !! 207 208 209 210 211 212 213 DO iphot = 1,nphot214 DO iav = 1,nconst215 IF ( TRIM( names_c(iav) ) == TRIM( phot_names(iphot) ) ) then216 ! 217 phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = &209 SUBROUTINE photolysis_constant 210 211 IMPLICIT NONE 212 213 INTEGER(iwp) :: iphot,iav !< loop indix for photolysis reaction 214 215 DO iphot = 1, nphot 216 DO iav = 1, nconst 217 IF ( TRIM( names_c(iav) ) == TRIM( phot_names(iphot) ) ) THEN 218 ! Prescribe fixed photolysis frequencies [1/s] 219 phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = & 218 220 phot0(iav) * cosz 221 ENDIF 222 ENDDO 223 ENDDO 224 225 226 END SUBROUTINE photolysis_constant 227 228 229 !! 230 ! Description: 231 !  232 !> This scheme applies a simple parameterisation for clear sky photolysis frequencies 233 !> from the Master Chemical Mechanism, MCM v3.2 (http://mcm.leeds.ac.uk/MCM). 234 !> Reference: Saunders et al., Atmos. Chem. Phys., 3, 161, 2003 235 !> J = l*COSx@m*EXP(n*SECx) with l,m,n named par_l etc., x is the zenith angle 236 !! 237 SUBROUTINE photolysis_simple 238 239 USE radiation_model_mod, & 240 ONLY: calc_zenith, cos_zenith 241 242 IMPLICIT NONE 243 244 INTEGER(iwp) :: iphot,iav !< loop indix for photolysis reaction 245 REAL(wp) :: coszi !< 1./cosine of zenith angle 246 247 DO iphot = 1, nphot 248 phot_frequen(iphot)%freq = 0.0_wp 249 ENDDO 250 251 CALL calc_zenith 252 253 IF ( cos_zenith > 0.0_wp ) THEN 254 coszi = 1. / cos_zenith 255 256 DO iphot = 1, nphot 257 DO iav = 1, nsimple 258 IF ( TRIM( names_s(iav) ) == TRIM( phot_names(iphot) ) ) then 259 phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = & 260 par_l(iav) * cos_zenith**par_m(iav) * EXP( par_n(iav) * coszi ) 219 261 ENDIF 220 262 ENDDO 221 263 ENDDO 222 223 END SUBROUTINE photolysis_constant 224 225 226 !! 227 ! Description: 228 !  229 !> This scheme applies a simple parameterisation for clear sky photolysis frequencies 230 !> from the Master Chemical Mechanism, MCM v3.2 (http://mcm.leeds.ac.uk/MCM). 231 !> Reference: Saunders et al., Atmos. Chem. Phys., 3, 161, 2003 232 !! 233 SUBROUTINE photolysis_simple 234 235 USE radiation_model_mod, & 236 ONLY: calc_zenith, cos_zenith 237 238 IMPLICIT NONE 239 240 INTEGER(iwp) :: iphot,iav !< loop indix for photolysis reaction 241 REAL(wp) :: coszi !< 1./cosine of zenith angle 242 243 DO iphot = 1,nphot 244 phot_frequen(iphot)%freq = 0.0_wp 245 ENDDO 246 247 CALL calc_zenith 248 249 IF ( cos_zenith > 0.0_wp ) THEN 250 coszi = 1. / cos_zenith 251 252 DO iphot = 1,nphot 253 DO iav = 1,nsimple 254 IF ( TRIM( names_s(iav) ) == TRIM( phot_names(iphot) ) ) then 255 phot_frequen(iphot)%freq(nzb+1:nzt,:,:) = & 256 par_l(iav) * cos_zenith**par_m(iav) * EXP( par_n(iav) * coszi ) 257 ENDIF 258 ENDDO 259 ENDDO 260 ENDIF 261 END SUBROUTINE photolysis_simple 264 ENDIF 265 266 267 END SUBROUTINE photolysis_simple 262 268 263 269 END MODULE chem_photolysis_mod
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