| [3908] | 1 | ! radiation_ifs_rrtm.F90 - Interface to IFS implementation of RRTM-G |
|---|
| 2 | ! |
|---|
| 3 | ! (C) Copyright 2015- ECMWF. |
|---|
| 4 | ! |
|---|
| 5 | ! This software is licensed under the terms of the Apache Licence Version 2.0 |
|---|
| 6 | ! which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. |
|---|
| 7 | ! |
|---|
| 8 | ! In applying this licence, ECMWF does not waive the privileges and immunities |
|---|
| 9 | ! granted to it by virtue of its status as an intergovernmental organisation |
|---|
| 10 | ! nor does it submit to any jurisdiction. |
|---|
| 11 | ! |
|---|
| 12 | ! Author: Robin Hogan |
|---|
| 13 | ! Email: r.j.hogan@ecmwf.int |
|---|
| 14 | ! |
|---|
| 15 | ! Modifications |
|---|
| 16 | ! 2017-04-11 R. Hogan Receive "surface" dummy argument |
|---|
| 17 | ! 2017-09-08 R. Hogan Reverted some changes |
|---|
| 18 | ! 2017-10-18 R. Hogan Added planck_function public function |
|---|
| 19 | ! 2018-01-11 R. Hogan Added optional spectral scaling of incoming solar radiation |
|---|
| 20 | ! 2018-02-22 R. Hogan Optimized reverse indexing of heights |
|---|
| 21 | ! 2018-05-05 R. Hogan gas_optics can be called for reduced number of levels |
|---|
| 22 | ! 2019-01-02 R. Hogan Initialize shortwave props to zero in case sun below horizon |
|---|
| 23 | |
|---|
| 24 | module radiation_ifs_rrtm |
|---|
| 25 | |
|---|
| 26 | implicit none |
|---|
| 27 | |
|---|
| 28 | public :: setup_gas_optics, gas_optics, planck_function, set_gas_units |
|---|
| 29 | |
|---|
| 30 | contains |
|---|
| 31 | |
|---|
| 32 | !--------------------------------------------------------------------- |
|---|
| 33 | ! Setup the IFS implementation of RRTM-G gas absorption model |
|---|
| 34 | subroutine setup_gas_optics(config, directory) |
|---|
| 35 | |
|---|
| 36 | use yoerrtm, only : jpglw |
|---|
| 37 | use yoesrtm, only : jpgsw |
|---|
| 38 | use yoerrtftr, only : ngb_lw => ngb |
|---|
| 39 | use yoesrtm, only : ngb_sw => ngbsw |
|---|
| 40 | use yomhook, only : lhook, dr_hook |
|---|
| 41 | |
|---|
| 42 | use radiation_config |
|---|
| 43 | |
|---|
| 44 | type(config_type), intent(inout), target :: config |
|---|
| 45 | character(len=*), intent(in) :: directory |
|---|
| 46 | |
|---|
| 47 | integer :: irep ! For implied do |
|---|
| 48 | |
|---|
| 49 | integer, parameter :: RRTM_GPOINT_REORDERING_LW(140) = (/ & |
|---|
| 50 | & 89, 90, 139, 77, 137, 69, 131, 97, 91, 70, 78, 71, 53, 72, 123, 54, 79, 98, & |
|---|
| 51 | & 92, 55, 80, 132, 124, 81, 73, 56, 99, 82, 57, 23, 125, 100, 24, 74, 93, 58, 25, & |
|---|
| 52 | & 83, 126, 75, 26, 11, 101, 133, 59, 27, 76, 140, 12, 84, 102, 94, 28, 127, 85, & |
|---|
| 53 | & 13, 39, 60, 86, 103, 87, 109, 14, 29, 115, 40, 95, 15, 61, 88, 41, 110, 104, 1, & |
|---|
| 54 | & 116, 42, 30, 134, 128, 138, 96, 62, 16, 43, 117, 63, 111, 44, 2, 64, 31, 65, & |
|---|
| 55 | & 105, 17, 45, 66, 118, 32, 3, 33, 67, 18, 129, 135, 46, 112, 34, 106, 68, 35, 4, & |
|---|
| 56 | & 119, 36, 47, 107, 19, 37, 38, 113, 48, 130, 5, 120, 49, 108, 20, 50, 51, 114, & |
|---|
| 57 | & 21, 121, 52, 136, 122, 6, 22, 7, 8, 9, 10 & |
|---|
| 58 | & /) |
|---|
| 59 | integer, parameter :: RRTM_GPOINT_REORDERING_SW(112) = (/ & |
|---|
| 60 | & 35, 45, 19, 27, 36, 57, 20, 46, 58, 21, 28, 67, 55, 68, 37, 1, 69, 22, 29, 59, & |
|---|
| 61 | & 78, 101, 79, 77, 70, 76, 47, 75, 30, 81, 60, 102, 80, 82, 23, 2, 83, 84, 85, & |
|---|
| 62 | & 86, 103, 61, 31, 87, 56, 38, 71, 48, 88, 3, 62, 89, 24, 7, 49, 32, 104, 72, 90, & |
|---|
| 63 | & 63, 39, 4, 8, 50, 91, 64, 40, 33, 25, 51, 95, 96, 73, 65, 9, 41, 97, 92, 105, & |
|---|
| 64 | & 52, 5, 98, 10, 42, 99, 100, 66, 11, 74, 34, 53, 26, 6, 106, 12, 43, 13, 54, 93, & |
|---|
| 65 | & 44, 107, 94, 14, 108, 15, 16, 109, 17, 18, 110, 111, 112 & |
|---|
| 66 | & /) |
|---|
| 67 | |
|---|
| 68 | real(jprb) :: hook_handle |
|---|
| 69 | |
|---|
| 70 | #include "surdi.intfb.h" |
|---|
| 71 | #include "surrtab.intfb.h" |
|---|
| 72 | #include "surrtpk.intfb.h" |
|---|
| 73 | #include "surrtrf.intfb.h" |
|---|
| 74 | #include "rrtm_init_140gp.intfb.h" |
|---|
| 75 | #include "srtm_init.intfb.h" |
|---|
| 76 | |
|---|
| 77 | if (lhook) call dr_hook('radiation_ifs_rrtm:setup_gas_optics',0,hook_handle) |
|---|
| 78 | |
|---|
| 79 | ! The IFS implementation of RRTMG uses many global variables. In |
|---|
| 80 | ! the IFS these will have been set up already; otherwise set them |
|---|
| 81 | ! up now. |
|---|
| 82 | if (config%do_setup_ifsrrtm) then |
|---|
| 83 | call SURDI |
|---|
| 84 | call SURRTAB |
|---|
| 85 | call SURRTPK |
|---|
| 86 | call SURRTRF |
|---|
| 87 | call RRTM_INIT_140GP(directory) |
|---|
| 88 | call SRTM_INIT(directory) |
|---|
| 89 | end if |
|---|
| 90 | |
|---|
| 91 | config%n_g_sw = jpgsw |
|---|
| 92 | config%n_g_lw = jpglw |
|---|
| 93 | config%n_bands_sw = 14 |
|---|
| 94 | config%n_bands_lw = 16 |
|---|
| 95 | |
|---|
| 96 | ! Wavenumber ranges of each band may be needed so that the user |
|---|
| 97 | ! can compute UV and photosynthetically active radiation for a |
|---|
| 98 | ! particular wavelength range |
|---|
| 99 | allocate(config%wavenumber1_sw(config%n_bands_sw)) |
|---|
| 100 | allocate(config%wavenumber2_sw(config%n_bands_sw)) |
|---|
| 101 | allocate(config%wavenumber1_lw(config%n_bands_lw)) |
|---|
| 102 | allocate(config%wavenumber2_lw(config%n_bands_lw)) |
|---|
| 103 | config%wavenumber1_lw = (/ 10, 350, 500, 630, 700, 820, 980, 1080, 1180, 1390, 1480, & |
|---|
| 104 | & 1800, 2080, 2250, 2380, 2600 /) |
|---|
| 105 | config%wavenumber2_lw = (/ 350, 500, 630, 700, 820, 980, 1080, 1180, 1390, 1480, 1800, & |
|---|
| 106 | & 2080, 2250, 2380, 2600, 3250 /) |
|---|
| 107 | config%wavenumber1_sw = (/ 2600, 3250, 4000, 4650, 5150, 6150, 7700, 8050, 12850, & |
|---|
| 108 | & 16000 , 22650, 29000, 38000, 820 /) |
|---|
| 109 | config%wavenumber2_sw = (/ 3250, 4000, 4650, 5150, 6150, 7700, 8050, 12850, 16000, & |
|---|
| 110 | & 22650, 29000, 38000, 50000, 2600 /) |
|---|
| [4115] | 111 | print*,'allocate dans ifs_rrtm' |
|---|
| [3908] | 112 | allocate(config%i_band_from_g_sw (config%n_g_sw)) |
|---|
| 113 | allocate(config%i_band_from_g_lw (config%n_g_lw)) |
|---|
| 114 | allocate(config%i_band_from_reordered_g_sw(config%n_g_sw)) |
|---|
| 115 | allocate(config%i_band_from_reordered_g_lw(config%n_g_lw)) |
|---|
| 116 | allocate(config%i_g_from_reordered_g_sw(config%n_g_sw)) |
|---|
| 117 | allocate(config%i_g_from_reordered_g_lw(config%n_g_lw)) |
|---|
| 118 | |
|---|
| 119 | ! Shortwave starts at 16: need to start at 1 |
|---|
| 120 | config%i_band_from_g_sw = ngb_sw - ngb_sw(1)+1 |
|---|
| 121 | config%i_band_from_g_lw = ngb_lw |
|---|
| 122 | |
|---|
| 123 | if (config%i_solver_sw == ISolverSpartacus) then |
|---|
| 124 | ! SPARTACUS requires g points ordered in approximately |
|---|
| 125 | ! increasing order of optical depth |
|---|
| 126 | config%i_g_from_reordered_g_sw = RRTM_GPOINT_REORDERING_SW |
|---|
| 127 | else |
|---|
| 128 | ! Implied-do for no reordering |
|---|
| 129 | ! config%i_g_from_reordered_g_sw = RRTM_GPOINT_REORDERING_SW |
|---|
| 130 | config%i_g_from_reordered_g_sw = (/ (irep, irep=1,config%n_g_sw) /) |
|---|
| 131 | end if |
|---|
| 132 | |
|---|
| 133 | if (config%i_solver_lw == ISolverSpartacus) then |
|---|
| 134 | ! SPARTACUS requires g points ordered in approximately |
|---|
| 135 | ! increasing order of optical depth |
|---|
| 136 | config%i_g_from_reordered_g_lw = RRTM_GPOINT_REORDERING_LW |
|---|
| 137 | else |
|---|
| 138 | ! Implied-do for no reordering |
|---|
| 139 | config%i_g_from_reordered_g_lw = (/ (irep, irep=1,config%n_g_lw) /) |
|---|
| 140 | end if |
|---|
| 141 | |
|---|
| 142 | config%i_band_from_reordered_g_sw & |
|---|
| 143 | = config%i_band_from_g_sw(config%i_g_from_reordered_g_sw) |
|---|
| 144 | |
|---|
| 145 | config%i_band_from_reordered_g_lw & |
|---|
| 146 | = config%i_band_from_g_lw(config%i_g_from_reordered_g_lw) |
|---|
| 147 | |
|---|
| 148 | ! The i_spec_* variables are used solely for storing spectral |
|---|
| 149 | ! data, and this can either be by band or by g-point |
|---|
| 150 | if (config%do_save_spectral_flux) then |
|---|
| 151 | if (config%do_save_gpoint_flux) then |
|---|
| 152 | config%n_spec_sw = config%n_g_sw |
|---|
| 153 | config%n_spec_lw = config%n_g_lw |
|---|
| 154 | config%i_spec_from_reordered_g_sw => config%i_g_from_reordered_g_sw |
|---|
| 155 | config%i_spec_from_reordered_g_lw => config%i_g_from_reordered_g_lw |
|---|
| 156 | else |
|---|
| 157 | config%n_spec_sw = config%n_bands_sw |
|---|
| 158 | config%n_spec_lw = config%n_bands_lw |
|---|
| 159 | config%i_spec_from_reordered_g_sw => config%i_band_from_reordered_g_sw |
|---|
| 160 | config%i_spec_from_reordered_g_lw => config%i_band_from_reordered_g_lw |
|---|
| 161 | end if |
|---|
| 162 | else |
|---|
| 163 | config%n_spec_sw = 0 |
|---|
| 164 | config%n_spec_lw = 0 |
|---|
| 165 | nullify(config%i_spec_from_reordered_g_sw) |
|---|
| 166 | nullify(config%i_spec_from_reordered_g_lw) |
|---|
| 167 | end if |
|---|
| 168 | |
|---|
| 169 | if (lhook) call dr_hook('radiation_ifs_rrtm:setup_gas_optics',1,hook_handle) |
|---|
| 170 | |
|---|
| 171 | end subroutine setup_gas_optics |
|---|
| 172 | |
|---|
| 173 | |
|---|
| 174 | !--------------------------------------------------------------------- |
|---|
| 175 | ! Scale gas mixing ratios according to required units |
|---|
| 176 | subroutine set_gas_units(gas) |
|---|
| 177 | |
|---|
| 178 | use radiation_gas, only : gas_type, IMassMixingRatio |
|---|
| 179 | type(gas_type), intent(inout) :: gas |
|---|
| 180 | |
|---|
| 181 | call gas%set_units(IMassMixingRatio) |
|---|
| 182 | |
|---|
| 183 | end subroutine set_gas_units |
|---|
| 184 | |
|---|
| 185 | |
|---|
| 186 | !--------------------------------------------------------------------- |
|---|
| 187 | ! Compute gas optical depths, shortwave scattering, Planck function |
|---|
| 188 | ! and incoming shortwave radiation at top-of-atmosphere |
|---|
| 189 | subroutine gas_optics(ncol,nlev,istartcol,iendcol, & |
|---|
| 190 | & config, single_level, thermodynamics, gas, & |
|---|
| 191 | & od_lw, od_sw, ssa_sw, lw_albedo, planck_hl, lw_emission, & |
|---|
| 192 | & incoming_sw) |
|---|
| 193 | |
|---|
| 194 | use parkind1, only : jprb, jpim |
|---|
| 195 | |
|---|
| 196 | USE PARRRTM , ONLY : JPBAND, JPXSEC, JPINPX |
|---|
| 197 | USE YOERRTM , ONLY : JPGPT_LW => JPGPT |
|---|
| 198 | USE YOESRTM , ONLY : JPGPT_SW => JPGPT |
|---|
| 199 | !USE YOMDIMV , ONLY : YRDIMV |
|---|
| 200 | use yomhook , only : lhook, dr_hook |
|---|
| 201 | |
|---|
| 202 | use radiation_config, only : config_type, ISolverSpartacus |
|---|
| 203 | use radiation_thermodynamics, only : thermodynamics_type |
|---|
| 204 | use radiation_single_level, only : single_level_type |
|---|
| 205 | use radiation_gas |
|---|
| 206 | |
|---|
| 207 | integer, intent(in) :: ncol ! number of columns |
|---|
| 208 | integer, intent(in) :: nlev ! number of model levels |
|---|
| 209 | integer, intent(in) :: istartcol, iendcol ! range of columns to process |
|---|
| 210 | type(config_type), intent(in) :: config |
|---|
| 211 | type(single_level_type), intent(in) :: single_level |
|---|
| 212 | type(thermodynamics_type),intent(in) :: thermodynamics |
|---|
| 213 | type(gas_type), intent(in) :: gas |
|---|
| 214 | |
|---|
| 215 | ! Longwave albedo of the surface |
|---|
| 216 | real(jprb), dimension(config%n_g_lw,istartcol:iendcol), & |
|---|
| 217 | & intent(in), optional :: lw_albedo |
|---|
| 218 | |
|---|
| 219 | ! Gaseous layer optical depth in longwave and shortwave, and |
|---|
| 220 | ! shortwave single scattering albedo (i.e. fraction of extinction |
|---|
| 221 | ! due to Rayleigh scattering) at each g-point |
|---|
| 222 | real(jprb), dimension(config%n_g_lw,nlev,istartcol:iendcol), intent(out) :: & |
|---|
| 223 | & od_lw |
|---|
| 224 | real(jprb), dimension(config%n_g_sw,nlev,istartcol:iendcol), intent(out) :: & |
|---|
| 225 | & od_sw, ssa_sw |
|---|
| 226 | |
|---|
| 227 | ! The Planck function (emitted flux from a black body) at half |
|---|
| 228 | ! levels at each longwave g-point |
|---|
| 229 | real(jprb), dimension(config%n_g_lw,nlev+1,istartcol:iendcol), & |
|---|
| 230 | & intent(out), optional :: planck_hl |
|---|
| 231 | ! Planck function for the surface (W m-2) |
|---|
| 232 | real(jprb), dimension(config%n_g_lw,istartcol:iendcol), & |
|---|
| 233 | & intent(out), optional :: lw_emission |
|---|
| 234 | |
|---|
| 235 | ! The incoming shortwave flux into a plane perpendicular to the |
|---|
| 236 | ! incoming radiation at top-of-atmosphere in each of the shortwave |
|---|
| 237 | ! g-points |
|---|
| 238 | real(jprb), dimension(config%n_g_sw,istartcol:iendcol), & |
|---|
| 239 | & intent(out), optional :: incoming_sw |
|---|
| 240 | |
|---|
| 241 | real(jprb) :: incoming_sw_scale(istartcol:iendcol) |
|---|
| 242 | |
|---|
| 243 | ! The variables in capitals are used in the same way as the |
|---|
| 244 | ! equivalent routine in the IFS |
|---|
| 245 | |
|---|
| 246 | real(jprb) :: ZOD_LW(JPGPT_LW,nlev,istartcol:iendcol) ! Note ordering of dimensions |
|---|
| 247 | real(jprb) :: ZOD_SW(istartcol:iendcol,nlev,JPGPT_SW) |
|---|
| 248 | real(jprb) :: ZSSA_SW(istartcol:iendcol,nlev,JPGPT_SW) |
|---|
| 249 | real(jprb) :: ZINCSOL(istartcol:iendcol,JPGPT_SW) |
|---|
| 250 | |
|---|
| 251 | real(jprb) :: ZCOLMOL(istartcol:iendcol,nlev) |
|---|
| 252 | real(jprb) :: ZCOLDRY(istartcol:iendcol,nlev) |
|---|
| 253 | real(jprb) :: ZWBRODL(istartcol:iendcol,nlev) !BROADENING GASES,column density (mol/cm2) |
|---|
| 254 | real(jprb) :: ZCOLBRD(istartcol:iendcol,nlev) !BROADENING GASES, column amount |
|---|
| 255 | real(jprb) :: ZWKL(istartcol:iendcol,JPINPX,nlev) |
|---|
| 256 | |
|---|
| 257 | real(jprb) :: ZWX(istartcol:iendcol,JPXSEC,nlev) ! Amount of trace gases |
|---|
| 258 | |
|---|
| 259 | real(jprb) :: ZFLUXFAC, ZPI |
|---|
| 260 | |
|---|
| 261 | ! - from AER |
|---|
| 262 | real(jprb) :: ZTAUAERL(istartcol:iendcol,nlev,JPBAND) |
|---|
| 263 | |
|---|
| 264 | !- from INTFAC |
|---|
| 265 | real(jprb) :: ZFAC00(istartcol:iendcol,nlev) |
|---|
| 266 | real(jprb) :: ZFAC01(istartcol:iendcol,nlev) |
|---|
| 267 | real(jprb) :: ZFAC10(istartcol:iendcol,nlev) |
|---|
| 268 | real(jprb) :: ZFAC11(istartcol:iendcol,nlev) |
|---|
| 269 | |
|---|
| 270 | !- from FOR |
|---|
| 271 | real(jprb) :: ZFORFAC(istartcol:iendcol,nlev) |
|---|
| 272 | real(jprb) :: ZFORFRAC(istartcol:iendcol,nlev) |
|---|
| 273 | integer :: INDFOR(istartcol:iendcol,nlev) |
|---|
| 274 | |
|---|
| 275 | !- from MINOR |
|---|
| 276 | integer :: INDMINOR(istartcol:iendcol,nlev) |
|---|
| 277 | real(jprb) :: ZSCALEMINOR(istartcol:iendcol,nlev) |
|---|
| 278 | real(jprb) :: ZSCALEMINORN2(istartcol:iendcol,nlev) |
|---|
| 279 | real(jprb) :: ZMINORFRAC(istartcol:iendcol,nlev) |
|---|
| 280 | |
|---|
| 281 | real(jprb) :: & |
|---|
| 282 | & ZRAT_H2OCO2(istartcol:iendcol,nlev),ZRAT_H2OCO2_1(istartcol:iendcol,nlev), & |
|---|
| 283 | & ZRAT_H2OO3(istartcol:iendcol,nlev) ,ZRAT_H2OO3_1(istartcol:iendcol,nlev), & |
|---|
| 284 | & ZRAT_H2ON2O(istartcol:iendcol,nlev),ZRAT_H2ON2O_1(istartcol:iendcol,nlev), & |
|---|
| 285 | & ZRAT_H2OCH4(istartcol:iendcol,nlev),ZRAT_H2OCH4_1(istartcol:iendcol,nlev), & |
|---|
| 286 | & ZRAT_N2OCO2(istartcol:iendcol,nlev),ZRAT_N2OCO2_1(istartcol:iendcol,nlev), & |
|---|
| 287 | & ZRAT_O3CO2(istartcol:iendcol,nlev) ,ZRAT_O3CO2_1(istartcol:iendcol,nlev) |
|---|
| 288 | |
|---|
| 289 | !- from INTIND |
|---|
| 290 | integer :: JP(istartcol:iendcol,nlev) |
|---|
| 291 | integer :: JT(istartcol:iendcol,nlev) |
|---|
| 292 | integer :: JT1(istartcol:iendcol,nlev) |
|---|
| 293 | |
|---|
| 294 | !- from PRECISE |
|---|
| 295 | real(jprb) :: ZONEMINUS, ZONEMINUS_ARRAY(istartcol:iendcol) |
|---|
| 296 | |
|---|
| 297 | !- from PROFDATA |
|---|
| 298 | real(jprb) :: ZCOLH2O(istartcol:iendcol,nlev) |
|---|
| 299 | real(jprb) :: ZCOLCO2(istartcol:iendcol,nlev) |
|---|
| 300 | real(jprb) :: ZCOLO3(istartcol:iendcol,nlev) |
|---|
| 301 | real(jprb) :: ZCOLN2O(istartcol:iendcol,nlev) |
|---|
| 302 | real(jprb) :: ZCOLCH4(istartcol:iendcol,nlev) |
|---|
| 303 | real(jprb) :: ZCOLO2(istartcol:iendcol,nlev) |
|---|
| 304 | real(jprb) :: ZCO2MULT(istartcol:iendcol,nlev) |
|---|
| 305 | integer :: ILAYTROP(istartcol:iendcol) |
|---|
| 306 | integer :: ILAYSWTCH(istartcol:iendcol) |
|---|
| 307 | integer :: ILAYLOW(istartcol:iendcol) |
|---|
| 308 | |
|---|
| 309 | !- from PROFILE |
|---|
| 310 | real(jprb) :: ZPAVEL(istartcol:iendcol,nlev) |
|---|
| 311 | real(jprb) :: ZTAVEL(istartcol:iendcol,nlev) |
|---|
| 312 | real(jprb) :: ZPZ(istartcol:iendcol,0:nlev) |
|---|
| 313 | real(jprb) :: ZTZ(istartcol:iendcol,0:nlev) |
|---|
| 314 | |
|---|
| 315 | !- from SELF |
|---|
| 316 | real(jprb) :: ZSELFFAC(istartcol:iendcol,nlev) |
|---|
| 317 | real(jprb) :: ZSELFFRAC(istartcol:iendcol,nlev) |
|---|
| 318 | integer :: INDSELF(istartcol:iendcol,nlev) |
|---|
| 319 | |
|---|
| 320 | !- from SP |
|---|
| 321 | real(jprb) :: ZPFRAC(istartcol:iendcol,JPGPT_LW,nlev) |
|---|
| 322 | |
|---|
| 323 | !- from SURFACE |
|---|
| 324 | integer :: IREFLECT(istartcol:iendcol) |
|---|
| 325 | |
|---|
| 326 | real(jprb) :: pressure_fl(ncol, nlev), temperature_fl(ncol, nlev) |
|---|
| 327 | |
|---|
| 328 | ! If nlev is less than the number of heights at which gas mixing |
|---|
| 329 | ! ratios are stored, then we assume that the lower part of the |
|---|
| 330 | ! atmosphere is required. This enables nlev=1 to be passed in to |
|---|
| 331 | ! the routine, in which case the gas properties of the lowest |
|---|
| 332 | ! layer are provided, useful for canopy radiative transfer. |
|---|
| 333 | integer :: istartlev, iendlev |
|---|
| 334 | |
|---|
| 335 | integer :: jlev, jgreorder, jg, ig, iband, jcol |
|---|
| 336 | |
|---|
| 337 | real(jprb) :: hook_handle |
|---|
| 338 | |
|---|
| 339 | #include "rrtm_prepare_gases.intfb.h" |
|---|
| 340 | #include "rrtm_setcoef_140gp.intfb.h" |
|---|
| 341 | #include "rrtm_gas_optical_depth.intfb.h" |
|---|
| 342 | #include "srtm_setcoef.intfb.h" |
|---|
| 343 | #include "srtm_gas_optical_depth.intfb.h" |
|---|
| 344 | |
|---|
| 345 | if (lhook) call dr_hook('radiation_ifs_rrtm:gas_optics',0,hook_handle) |
|---|
| 346 | |
|---|
| 347 | ! Compute start and end levels for indexing the gas mixing ratio |
|---|
| 348 | ! and thermodynamics arrays |
|---|
| 349 | iendlev = ubound(gas%mixing_ratio,2) |
|---|
| 350 | istartlev = iendlev - nlev + 1 |
|---|
| 351 | |
|---|
| 352 | ZPI = 2.0_jprb*ASIN(1.0_jprb) |
|---|
| 353 | ZFLUXFAC = ZPI * 1.E+4 |
|---|
| 354 | ZONEMINUS = 1.0_jprb - 1.0e-6_jprb |
|---|
| 355 | ZONEMINUS_ARRAY = ZONEMINUS |
|---|
| 356 | |
|---|
| 357 | ! if (.not. associated(YRDIMV)) then |
|---|
| 358 | ! allocate(YRDIMV) |
|---|
| 359 | ! YRDIMV%NFLEVG = nlev |
|---|
| 360 | ! end if |
|---|
| 361 | |
|---|
| 362 | pressure_fl(istartcol:iendcol,:) & |
|---|
| 363 | & = 0.5_jprb * (thermodynamics%pressure_hl(istartcol:iendcol,istartlev:iendlev) & |
|---|
| 364 | & +thermodynamics%pressure_hl(istartcol:iendcol,istartlev+1:iendlev+1)) |
|---|
| 365 | temperature_fl(istartcol:iendcol,:) & |
|---|
| 366 | & = 0.5_jprb * (thermodynamics%temperature_hl(istartcol:iendcol,istartlev:iendlev) & |
|---|
| 367 | & +thermodynamics%temperature_hl(istartcol:iendcol,istartlev+1:iendlev+1)) |
|---|
| 368 | |
|---|
| 369 | ! Check we have gas mixing ratios in the right units |
|---|
| 370 | call gas%assert_units(IMassMixingRatio) |
|---|
| 371 | |
|---|
| 372 | ! Warning: O2 is hard-coded within the following function so the |
|---|
| 373 | ! user-provided concentrations of this gas are ignored for both |
|---|
| 374 | ! the longwave and shortwave |
|---|
| 375 | CALL RRTM_PREPARE_GASES & |
|---|
| 376 | & ( istartcol, iendcol, ncol, nlev, & |
|---|
| 377 | & thermodynamics%pressure_hl(:,istartlev:iendlev+1), & |
|---|
| 378 | & pressure_fl, & |
|---|
| 379 | & thermodynamics%temperature_hl(:,istartlev:iendlev+1), & |
|---|
| 380 | & temperature_fl, & |
|---|
| 381 | & gas%mixing_ratio(:,istartlev:iendlev,IH2O), & |
|---|
| 382 | & gas%mixing_ratio(:,istartlev:iendlev,ICO2), & |
|---|
| 383 | & gas%mixing_ratio(:,istartlev:iendlev,ICH4), & |
|---|
| 384 | & gas%mixing_ratio(:,istartlev:iendlev,IN2O), & |
|---|
| 385 | & gas%mixing_ratio(:,istartlev:iendlev,INO2), & |
|---|
| 386 | & gas%mixing_ratio(:,istartlev:iendlev,ICFC11), & |
|---|
| 387 | & gas%mixing_ratio(:,istartlev:iendlev,ICFC12), & |
|---|
| 388 | & gas%mixing_ratio(:,istartlev:iendlev,IHCFC22), & |
|---|
| 389 | & gas%mixing_ratio(:,istartlev:iendlev,ICCl4), & |
|---|
| 390 | & gas%mixing_ratio(:,istartlev:iendlev,IO3), & |
|---|
| 391 | & ZCOLDRY, ZWBRODL,ZWKL, ZWX, & |
|---|
| 392 | & ZPAVEL , ZTAVEL , ZPZ , ZTZ, IREFLECT) |
|---|
| 393 | |
|---|
| 394 | CALL RRTM_SETCOEF_140GP & |
|---|
| 395 | &( istartcol, iendcol, nlev , ZCOLDRY , ZWBRODL , ZWKL , & |
|---|
| 396 | & ZFAC00 , ZFAC01 , ZFAC10 , ZFAC11 , ZFORFAC,ZFORFRAC,INDFOR, JP, JT, JT1 , & |
|---|
| 397 | & ZCOLH2O, ZCOLCO2 , ZCOLO3 , ZCOLN2O, ZCOLCH4, ZCOLO2,ZCO2MULT , ZCOLBRD, & |
|---|
| 398 | & ILAYTROP,ILAYSWTCH, ILAYLOW, ZPAVEL , ZTAVEL , ZSELFFAC, ZSELFFRAC, INDSELF, & |
|---|
| 399 | & INDMINOR,ZSCALEMINOR,ZSCALEMINORN2,ZMINORFRAC,& |
|---|
| 400 | & ZRAT_H2OCO2, ZRAT_H2OCO2_1, ZRAT_H2OO3, ZRAT_H2OO3_1, & |
|---|
| 401 | & ZRAT_H2ON2O, ZRAT_H2ON2O_1, ZRAT_H2OCH4, ZRAT_H2OCH4_1, & |
|---|
| 402 | & ZRAT_N2OCO2, ZRAT_N2OCO2_1, ZRAT_O3CO2, ZRAT_O3CO2_1) |
|---|
| 403 | |
|---|
| 404 | ZTAUAERL = 0.0_jprb |
|---|
| 405 | |
|---|
| 406 | CALL RRTM_GAS_OPTICAL_DEPTH & |
|---|
| 407 | &( istartcol, iendcol, nlev, ZOD_LW, ZPAVEL, ZCOLDRY, ZCOLBRD, ZWX ,& |
|---|
| 408 | & ZTAUAERL, ZFAC00 , ZFAC01, ZFAC10 , ZFAC11 , ZFORFAC,ZFORFRAC,INDFOR, & |
|---|
| 409 | & JP, JT, JT1, ZONEMINUS ,& |
|---|
| 410 | & ZCOLH2O , ZCOLCO2, ZCOLO3, ZCOLN2O, ZCOLCH4, ZCOLO2,ZCO2MULT ,& |
|---|
| 411 | & ILAYTROP, ILAYSWTCH,ILAYLOW, ZSELFFAC, ZSELFFRAC, INDSELF, ZPFRAC, & |
|---|
| 412 | & INDMINOR,ZSCALEMINOR,ZSCALEMINORN2,ZMINORFRAC,& |
|---|
| 413 | & ZRAT_H2OCO2, ZRAT_H2OCO2_1, ZRAT_H2OO3, ZRAT_H2OO3_1, & |
|---|
| 414 | & ZRAT_H2ON2O, ZRAT_H2ON2O_1, ZRAT_H2OCH4, ZRAT_H2OCH4_1, & |
|---|
| 415 | & ZRAT_N2OCO2, ZRAT_N2OCO2_1, ZRAT_O3CO2, ZRAT_O3CO2_1) |
|---|
| 416 | |
|---|
| 417 | if (present(lw_albedo)) then |
|---|
| 418 | |
|---|
| 419 | call planck_function_atmos(nlev, istartcol, iendcol, config, & |
|---|
| 420 | & thermodynamics, ZPFRAC, planck_hl) |
|---|
| 421 | |
|---|
| 422 | if (single_level%is_simple_surface) then |
|---|
| 423 | call planck_function_surf(istartcol, iendcol, config, & |
|---|
| 424 | & single_level%skin_temperature, ZPFRAC(:,:,1), & |
|---|
| 425 | & lw_emission) |
|---|
| 426 | |
|---|
| 427 | ! The following can be used to extract the parameters defined at |
|---|
| 428 | ! the top of the planck_function routine below: |
|---|
| 429 | !write(*,'(a,140(e12.5,","),a)') 'ZPFRAC_surf=[', & |
|---|
| 430 | !& sum(ZPFRAC(istartcol:iendcol,:,1),1) / (iendcol+1-istartcol), ']' |
|---|
| 431 | |
|---|
| 432 | ! lw_emission at this point is actually the planck function of |
|---|
| 433 | ! the surface |
|---|
| 434 | lw_emission = lw_emission * (1.0_jprb - lw_albedo) |
|---|
| 435 | else |
|---|
| 436 | ! Longwave emission has already been computed |
|---|
| 437 | if (config%use_canopy_full_spectrum_lw) then |
|---|
| 438 | lw_emission = transpose(single_level%lw_emission(istartcol:iendcol,:)) |
|---|
| 439 | else |
|---|
| 440 | lw_emission = transpose(single_level%lw_emission(istartcol:iendcol, & |
|---|
| 441 | & config%i_emiss_from_band_lw(config%i_band_from_reordered_g_lw))) |
|---|
| 442 | end if |
|---|
| 443 | end if |
|---|
| 444 | |
|---|
| 445 | end if |
|---|
| 446 | |
|---|
| 447 | if (config%i_solver_lw == ISolverSpartacus) then |
|---|
| 448 | ! if (.true.) then |
|---|
| 449 | ! We need to rearrange the gas optics info in memory: reordering |
|---|
| 450 | ! the g points in order of approximately increasing optical |
|---|
| 451 | ! depth (for efficient 3D processing on only the regions of the |
|---|
| 452 | ! spectrum that are optically thin for gases) and reorder in |
|---|
| 453 | ! pressure since the the functions above treat pressure |
|---|
| 454 | ! decreasing with increasing index. Note that the output gas |
|---|
| 455 | ! arrays have dimensions in a different order to the inputs, |
|---|
| 456 | ! so there is some inefficiency here. |
|---|
| 457 | do jgreorder = 1,config%n_g_lw |
|---|
| 458 | iband = config%i_band_from_reordered_g_lw(jgreorder) |
|---|
| 459 | ig = config%i_g_from_reordered_g_lw(jgreorder) |
|---|
| 460 | |
|---|
| 461 | ! Top-of-atmosphere half level |
|---|
| 462 | do jlev = 1,nlev |
|---|
| 463 | do jcol = istartcol,iendcol |
|---|
| 464 | ! Some g points can return negative optical depths; |
|---|
| 465 | ! specifically original g points 54-56 which causes |
|---|
| 466 | ! unphysical single-scattering albedo when combined with |
|---|
| 467 | ! aerosol |
|---|
| 468 | od_lw(jgreorder,jlev,jcol) & |
|---|
| 469 | & = max(config%min_gas_od_lw, ZOD_LW(ig,nlev+1-jlev,jcol)) |
|---|
| 470 | end do |
|---|
| 471 | end do |
|---|
| 472 | end do |
|---|
| 473 | else |
|---|
| 474 | ! G points have not been reordered |
|---|
| 475 | do jcol = istartcol,iendcol |
|---|
| 476 | do jlev = 1,nlev |
|---|
| 477 | ! Check for negative optical depth |
|---|
| 478 | od_lw(:,jlev,jcol) = max(config%min_gas_od_lw, ZOD_LW(:,nlev+1-jlev,jcol)) |
|---|
| 479 | end do |
|---|
| 480 | end do |
|---|
| 481 | end if |
|---|
| 482 | |
|---|
| 483 | CALL SRTM_SETCOEF & |
|---|
| 484 | & ( istartcol, iendcol, nlev,& |
|---|
| 485 | & ZPAVEL , ZTAVEL,& |
|---|
| 486 | & ZCOLDRY , ZWKL,& |
|---|
| 487 | & ILAYTROP,& |
|---|
| 488 | & ZCOLCH4 , ZCOLCO2 , ZCOLH2O , ZCOLMOL , ZCOLO2 , ZCOLO3,& |
|---|
| 489 | & ZFORFAC , ZFORFRAC , INDFOR , ZSELFFAC, ZSELFFRAC, INDSELF, & |
|---|
| 490 | & ZFAC00 , ZFAC01 , ZFAC10 , ZFAC11,& |
|---|
| 491 | & JP , JT , JT1 , single_level%cos_sza(istartcol:iendcol) & |
|---|
| 492 | & ) |
|---|
| 493 | |
|---|
| 494 | ! SRTM_GAS_OPTICAL_DEPTH will not initialize profiles when the sun |
|---|
| 495 | ! is below the horizon, so we do it here |
|---|
| 496 | ZOD_SW(istartcol:iendcol,:,:) = 0.0_jprb |
|---|
| 497 | ZSSA_SW(istartcol:iendcol,:,:) = 0.0_jprb |
|---|
| 498 | ZINCSOL(istartcol:iendcol,:) = 0.0_jprb |
|---|
| 499 | |
|---|
| 500 | CALL SRTM_GAS_OPTICAL_DEPTH & |
|---|
| 501 | &( istartcol, iendcol , nlev , ZONEMINUS_ARRAY,& |
|---|
| 502 | & single_level%cos_sza(istartcol:iendcol), ILAYTROP,& |
|---|
| 503 | & ZCOLCH4 , ZCOLCO2 , ZCOLH2O, ZCOLMOL , ZCOLO2 , ZCOLO3,& |
|---|
| 504 | & ZFORFAC , ZFORFRAC , INDFOR , ZSELFFAC, ZSELFFRAC, INDSELF,& |
|---|
| 505 | & ZFAC00 , ZFAC01 , ZFAC10 , ZFAC11 ,& |
|---|
| 506 | & JP , JT , JT1 ,& |
|---|
| 507 | & ZOD_SW , ZSSA_SW , ZINCSOL ) |
|---|
| 508 | |
|---|
| 509 | ! Scale the incoming solar per band, if requested |
|---|
| 510 | if (config%use_spectral_solar_scaling) then |
|---|
| 511 | ZINCSOL(istartcol:iendcol,:) = ZINCSOL(istartcol:iendcol,:) & |
|---|
| 512 | & * spread(single_level%spectral_solar_scaling(config%i_band_from_reordered_g_sw), & |
|---|
| 513 | & 1,iendcol-istartcol+1) |
|---|
| 514 | end if |
|---|
| 515 | |
|---|
| 516 | ! Scaling factor to ensure that the total solar irradiance is as |
|---|
| 517 | ! requested. Note that if the sun is below the horizon then |
|---|
| 518 | ! ZINCSOL will be zero. |
|---|
| 519 | if (present(incoming_sw)) then |
|---|
| 520 | incoming_sw_scale = 1.0_jprb |
|---|
| 521 | do jcol = istartcol,iendcol |
|---|
| 522 | if (single_level%cos_sza(jcol) > 0.0_jprb) then |
|---|
| 523 | incoming_sw_scale(jcol) = single_level%solar_irradiance / sum(ZINCSOL(jcol,:)) |
|---|
| 524 | end if |
|---|
| 525 | end do |
|---|
| 526 | end if |
|---|
| 527 | |
|---|
| 528 | if (config%i_solver_sw == ISolverSpartacus) then |
|---|
| 529 | ! if (.true.) then |
|---|
| 530 | ! Account for reordered g points |
|---|
| 531 | do jgreorder = 1,config%n_g_sw |
|---|
| 532 | ig = config%i_g_from_reordered_g_sw(jgreorder) |
|---|
| 533 | do jlev = 1,nlev |
|---|
| 534 | do jcol = istartcol,iendcol |
|---|
| 535 | ! Check for negative optical depth |
|---|
| 536 | od_sw (jgreorder,nlev+1-jlev,jcol) & |
|---|
| 537 | & = max(config%min_gas_od_sw, ZOD_SW (jcol,jlev,ig)) |
|---|
| 538 | ssa_sw(jgreorder,nlev+1-jlev,jcol) = ZSSA_SW(jcol,jlev,ig) |
|---|
| 539 | end do |
|---|
| 540 | end do |
|---|
| 541 | if (present(incoming_sw)) then |
|---|
| 542 | incoming_sw(jgreorder,:) & |
|---|
| 543 | & = incoming_sw_scale(:) * ZINCSOL(:,ig) |
|---|
| 544 | end if |
|---|
| 545 | end do |
|---|
| 546 | else |
|---|
| 547 | ! G points have not been reordered |
|---|
| 548 | do jg = 1,config%n_g_sw |
|---|
| 549 | do jlev = 1,nlev |
|---|
| 550 | do jcol = istartcol,iendcol |
|---|
| 551 | ! Check for negative optical depth |
|---|
| 552 | od_sw (jg,nlev+1-jlev,jcol) = max(config%min_gas_od_sw, ZOD_SW(jcol,jlev,jg)) |
|---|
| 553 | ssa_sw(jg,nlev+1-jlev,jcol) = ZSSA_SW(jcol,jlev,jg) |
|---|
| 554 | end do |
|---|
| 555 | end do |
|---|
| 556 | if (present(incoming_sw)) then |
|---|
| 557 | incoming_sw(jg,:) & |
|---|
| 558 | & = incoming_sw_scale(:) * ZINCSOL(:,jg) |
|---|
| 559 | end if |
|---|
| 560 | end do |
|---|
| 561 | end if |
|---|
| 562 | |
|---|
| 563 | if (lhook) call dr_hook('radiation_ifs_rrtm:gas_optics',1,hook_handle) |
|---|
| 564 | |
|---|
| 565 | end subroutine gas_optics |
|---|
| 566 | |
|---|
| 567 | |
|---|
| 568 | !--------------------------------------------------------------------- |
|---|
| 569 | ! Compute Planck function of the atmosphere |
|---|
| 570 | subroutine planck_function_atmos(nlev,istartcol,iendcol, & |
|---|
| 571 | config, thermodynamics, PFRAC, & |
|---|
| 572 | planck_hl) |
|---|
| 573 | |
|---|
| 574 | use parkind1, only : jprb, jpim |
|---|
| 575 | |
|---|
| 576 | USE YOERRTM , ONLY : JPGPT_LW => JPGPT |
|---|
| 577 | use yoerrtwn, only : totplnk, delwave |
|---|
| 578 | |
|---|
| 579 | use yomhook, only : lhook, dr_hook |
|---|
| 580 | |
|---|
| 581 | use radiation_config, only : config_type, ISolverSpartacus |
|---|
| 582 | use radiation_thermodynamics, only : thermodynamics_type |
|---|
| 583 | !use radiation_gas |
|---|
| 584 | |
|---|
| 585 | integer, intent(in) :: nlev ! number of model levels |
|---|
| 586 | integer, intent(in) :: istartcol, iendcol ! range of columns to process |
|---|
| 587 | type(config_type), intent(in) :: config |
|---|
| 588 | type(thermodynamics_type),intent(in) :: thermodynamics |
|---|
| 589 | real(jprb), intent(in) :: PFRAC(istartcol:iendcol,JPGPT_LW,nlev) |
|---|
| 590 | |
|---|
| 591 | ! The Planck function (emitted flux from a black body) at half |
|---|
| 592 | ! levels at each longwave g-point |
|---|
| 593 | real(jprb), dimension(config%n_g_lw,nlev+1,istartcol:iendcol), intent(out) :: & |
|---|
| 594 | & planck_hl |
|---|
| 595 | |
|---|
| 596 | ! Planck function values per band |
|---|
| 597 | real(jprb), dimension(istartcol:iendcol, config%n_bands_lw) :: planck_store |
|---|
| 598 | |
|---|
| 599 | ! Look-up table variables for Planck function |
|---|
| 600 | real(jprb), dimension(istartcol:iendcol) :: frac |
|---|
| 601 | integer, dimension(istartcol:iendcol) :: ind |
|---|
| 602 | |
|---|
| 603 | ! Temperature (K) of a half-level |
|---|
| 604 | real(jprb) :: temperature |
|---|
| 605 | |
|---|
| 606 | real(jprb) :: factor |
|---|
| 607 | real(jprb) :: ZFLUXFAC |
|---|
| 608 | |
|---|
| 609 | integer :: jlev, jgreorder, jg, ig, iband, jband, jcol, ilevoffset |
|---|
| 610 | |
|---|
| 611 | real(jprb) :: hook_handle |
|---|
| 612 | |
|---|
| 613 | if (lhook) call dr_hook('radiation_ifs_rrtm:planck_function_atmos',0,hook_handle) |
|---|
| 614 | |
|---|
| 615 | ZFLUXFAC = 2.0_jprb*ASIN(1.0_jprb) * 1.0e4_jprb |
|---|
| 616 | |
|---|
| 617 | ! nlev may be less than the number of original levels, in which |
|---|
| 618 | ! case we assume that the user wants the lower part of the |
|---|
| 619 | ! atmosphere |
|---|
| 620 | ilevoffset = ubound(thermodynamics%temperature_hl,2)-nlev-1 |
|---|
| 621 | |
|---|
| 622 | ! Work out interpolations: for each half level, the index of the |
|---|
| 623 | ! lowest interpolation bound, and the fraction into interpolation |
|---|
| 624 | ! interval |
|---|
| 625 | do jlev = 1,nlev+1 |
|---|
| 626 | do jcol = istartcol,iendcol |
|---|
| 627 | temperature = thermodynamics%temperature_hl(jcol,jlev+ilevoffset) |
|---|
| 628 | if (temperature < 339.0_jprb .and. temperature >= 160.0_jprb) then |
|---|
| 629 | ! Linear interpolation between -113 and 66 degC |
|---|
| 630 | ind(jcol) = int(temperature - 159.0_jprb) |
|---|
| 631 | frac(jcol) = temperature - int(temperature) |
|---|
| 632 | else if(temperature >= 339.0_jprb) then |
|---|
| 633 | ! Extrapolation above 66 degC |
|---|
| 634 | ind(jcol) = 180 |
|---|
| 635 | frac(jcol) = temperature - 339.0_jprb |
|---|
| 636 | else |
|---|
| 637 | ! Cap below -113 degC (to avoid possible negative Planck |
|---|
| 638 | ! function values) |
|---|
| 639 | ind(jcol) = 1 |
|---|
| 640 | frac(jcol) = 0.0_jprb |
|---|
| 641 | end if |
|---|
| 642 | end do |
|---|
| 643 | |
|---|
| 644 | ! Calculate Planck functions per band |
|---|
| 645 | do jband = 1,config%n_bands_lw |
|---|
| 646 | factor = zfluxfac * delwave(jband) |
|---|
| 647 | do jcol = istartcol,iendcol |
|---|
| 648 | planck_store(jcol,jband) = factor & |
|---|
| 649 | & * (totplnk(ind(jcol),jband) & |
|---|
| 650 | & + frac(jcol)*(totplnk(ind(jcol)+1,jband)-totplnk(ind(jcol),jband))) |
|---|
| 651 | end do |
|---|
| 652 | end do |
|---|
| 653 | |
|---|
| 654 | if (config%i_solver_lw == ISolverSpartacus) then |
|---|
| 655 | ! We need to rearrange the gas optics info in memory: |
|---|
| 656 | ! reordering the g points in order of approximately increasing |
|---|
| 657 | ! optical depth (for efficient 3D processing on only the |
|---|
| 658 | ! regions of the spectrum that are optically thin for gases) |
|---|
| 659 | ! and reorder in pressure since the the functions above treat |
|---|
| 660 | ! pressure decreasing with increasing index. |
|---|
| 661 | if (jlev == 1) then |
|---|
| 662 | ! Top-of-atmosphere half level - note that PFRAC is on model |
|---|
| 663 | ! levels not half levels |
|---|
| 664 | do jgreorder = 1,config%n_g_lw |
|---|
| 665 | iband = config%i_band_from_reordered_g_lw(jgreorder) |
|---|
| 666 | ig = config%i_g_from_reordered_g_lw(jgreorder) |
|---|
| 667 | planck_hl(jgreorder,1,:) = planck_store(:,iband) & |
|---|
| 668 | & * PFRAC(:,ig,nlev) |
|---|
| 669 | end do |
|---|
| 670 | else |
|---|
| 671 | do jgreorder = 1,config%n_g_lw |
|---|
| 672 | iband = config%i_band_from_reordered_g_lw(jgreorder) |
|---|
| 673 | ig = config%i_g_from_reordered_g_lw(jgreorder) |
|---|
| 674 | planck_hl(jgreorder,jlev,:) & |
|---|
| 675 | & = planck_store(:,iband) & |
|---|
| 676 | & * PFRAC(:,ig,nlev+2-jlev) |
|---|
| 677 | end do |
|---|
| 678 | end if |
|---|
| 679 | else |
|---|
| 680 | ! G points have not been reordered |
|---|
| 681 | if (jlev == 1) then |
|---|
| 682 | ! Top-of-atmosphere half level - note that PFRAC is on model |
|---|
| 683 | ! levels not half levels |
|---|
| 684 | do jg = 1,config%n_g_lw |
|---|
| 685 | iband = config%i_band_from_g_lw(jg) |
|---|
| 686 | planck_hl(jg,1,:) = planck_store(:,iband) * PFRAC(:,jg,nlev) |
|---|
| 687 | end do |
|---|
| 688 | else |
|---|
| 689 | do jg = 1,config%n_g_lw |
|---|
| 690 | iband = config%i_band_from_g_lw(jg) |
|---|
| 691 | planck_hl(jg,jlev,:) = planck_store(:,iband) * PFRAC(:,jg,nlev+2-jlev) |
|---|
| 692 | end do |
|---|
| 693 | end if |
|---|
| 694 | end if |
|---|
| 695 | end do |
|---|
| 696 | |
|---|
| 697 | if (lhook) call dr_hook('radiation_ifs_rrtm:planck_function_atmos',1,hook_handle) |
|---|
| 698 | |
|---|
| 699 | end subroutine planck_function_atmos |
|---|
| 700 | |
|---|
| 701 | |
|---|
| 702 | !--------------------------------------------------------------------- |
|---|
| 703 | ! Compute Planck function of the surface |
|---|
| 704 | subroutine planck_function_surf(istartcol, iendcol, config, temperature, PFRAC, & |
|---|
| 705 | & planck_surf) |
|---|
| 706 | |
|---|
| 707 | use parkind1, only : jprb, jpim |
|---|
| 708 | |
|---|
| 709 | USE YOERRTM , ONLY : JPGPT_LW => JPGPT |
|---|
| 710 | use yoerrtwn, only : totplnk, delwave |
|---|
| 711 | |
|---|
| 712 | use yomhook, only : lhook, dr_hook |
|---|
| 713 | |
|---|
| 714 | use radiation_config, only : config_type, ISolverSpartacus |
|---|
| 715 | ! use radiation_gas |
|---|
| 716 | |
|---|
| 717 | integer, intent(in) :: istartcol, iendcol ! range of columns to process |
|---|
| 718 | type(config_type), intent(in) :: config |
|---|
| 719 | real(jprb), intent(in) :: temperature(:) |
|---|
| 720 | |
|---|
| 721 | real(jprb), intent(in) :: PFRAC(istartcol:iendcol,JPGPT_LW) |
|---|
| 722 | |
|---|
| 723 | ! Planck function of the surface (W m-2) |
|---|
| 724 | real(jprb), dimension(config%n_g_lw,istartcol:iendcol), & |
|---|
| 725 | & intent(out) :: planck_surf |
|---|
| 726 | |
|---|
| 727 | ! Planck function values per band |
|---|
| 728 | real(jprb), dimension(istartcol:iendcol, config%n_bands_lw) :: planck_store |
|---|
| 729 | |
|---|
| 730 | ! Look-up table variables for Planck function |
|---|
| 731 | real(jprb), dimension(istartcol:iendcol) :: frac |
|---|
| 732 | integer, dimension(istartcol:iendcol) :: ind |
|---|
| 733 | |
|---|
| 734 | ! Temperature (K) |
|---|
| 735 | real(jprb) :: Tsurf |
|---|
| 736 | |
|---|
| 737 | real(jprb) :: factor |
|---|
| 738 | real(jprb) :: ZFLUXFAC |
|---|
| 739 | |
|---|
| 740 | integer :: jgreorder, jg, ig, iband, jband, jcol |
|---|
| 741 | |
|---|
| 742 | real(jprb) :: hook_handle |
|---|
| 743 | |
|---|
| 744 | if (lhook) call dr_hook('radiation_ifs_rrtm:planck_function_surf',0,hook_handle) |
|---|
| 745 | |
|---|
| 746 | ZFLUXFAC = 2.0_jprb*ASIN(1.0_jprb) * 1.0e4_jprb |
|---|
| 747 | |
|---|
| 748 | ! Work out surface interpolations |
|---|
| 749 | do jcol = istartcol,iendcol |
|---|
| 750 | Tsurf = temperature(jcol) |
|---|
| 751 | if (Tsurf < 339.0_jprb .and. Tsurf >= 160.0_jprb) then |
|---|
| 752 | ! Linear interpolation between -113 and 66 degC |
|---|
| 753 | ind(jcol) = int(Tsurf - 159.0_jprb) |
|---|
| 754 | frac(jcol) = Tsurf - int(Tsurf) |
|---|
| 755 | else if(Tsurf >= 339.0_jprb) then |
|---|
| 756 | ! Extrapolation above 66 degC |
|---|
| 757 | ind(jcol) = 180 |
|---|
| 758 | frac(jcol) = Tsurf - 339.0_jprb |
|---|
| 759 | else |
|---|
| 760 | ! Cap below -113 degC (to avoid possible negative Planck |
|---|
| 761 | ! function values) |
|---|
| 762 | ind(jcol) = 1 |
|---|
| 763 | frac(jcol) = 0.0_jprb |
|---|
| 764 | end if |
|---|
| 765 | end do |
|---|
| 766 | |
|---|
| 767 | ! Calculate Planck functions per band |
|---|
| 768 | do jband = 1,config%n_bands_lw |
|---|
| 769 | factor = zfluxfac * delwave(jband) |
|---|
| 770 | do jcol = istartcol,iendcol |
|---|
| 771 | planck_store(jcol,jband) = factor & |
|---|
| 772 | & * (totplnk(ind(jcol),jband) & |
|---|
| 773 | & + frac(jcol)*(totplnk(ind(jcol)+1,jband)-totplnk(ind(jcol),jband))) |
|---|
| 774 | end do |
|---|
| 775 | end do |
|---|
| 776 | |
|---|
| 777 | if (config%i_solver_lw == ISolverSpartacus) then |
|---|
| 778 | ! We need to rearrange the gas optics info in memory: reordering |
|---|
| 779 | ! the g points in order of approximately increasing optical |
|---|
| 780 | ! depth (for efficient 3D processing on only the regions of |
|---|
| 781 | ! the spectrum that are optically thin for gases) and reorder |
|---|
| 782 | ! in pressure since the the functions above treat pressure |
|---|
| 783 | ! decreasing with increasing index. |
|---|
| 784 | do jgreorder = 1,config%n_g_lw |
|---|
| 785 | iband = config%i_band_from_reordered_g_lw(jgreorder) |
|---|
| 786 | ig = config%i_g_from_reordered_g_lw(jgreorder) |
|---|
| 787 | planck_surf(jgreorder,:) = planck_store(:,iband) * PFRAC(:,ig) |
|---|
| 788 | end do |
|---|
| 789 | else |
|---|
| 790 | ! G points have not been reordered |
|---|
| 791 | do jg = 1,config%n_g_lw |
|---|
| 792 | iband = config%i_band_from_g_lw(jg) |
|---|
| 793 | planck_surf(jg,:) = planck_store(:,iband) * PFRAC(:,jg) |
|---|
| 794 | end do |
|---|
| 795 | end if |
|---|
| 796 | |
|---|
| 797 | if (lhook) call dr_hook('radiation_ifs_rrtm:planck_function_surf',1,hook_handle) |
|---|
| 798 | |
|---|
| 799 | end subroutine planck_function_surf |
|---|
| 800 | |
|---|
| 801 | |
|---|
| 802 | !--------------------------------------------------------------------- |
|---|
| 803 | ! Externally facing function for computing the Planck function |
|---|
| 804 | ! without reference to any gas profile; typically this would be used |
|---|
| 805 | ! for computing the emission by facets of a complex surface. Note |
|---|
| 806 | ! that this uses fixed "PFRAC" values, obtained by averaging over |
|---|
| 807 | ! those derived from RRTM-G for near-surface conditions over a line |
|---|
| 808 | ! of meridian from the ECMWF model. |
|---|
| 809 | subroutine planck_function(config, temperature, planck_surf) |
|---|
| 810 | |
|---|
| 811 | use parkind1, only : jprb, jpim |
|---|
| 812 | |
|---|
| 813 | use radiation_config, only : config_type |
|---|
| 814 | |
|---|
| 815 | type(config_type), intent(in) :: config |
|---|
| 816 | real(jprb), intent(in) :: temperature |
|---|
| 817 | |
|---|
| 818 | ! Planck function of the surface (W m-2) |
|---|
| 819 | real(jprb), dimension(config%n_g_lw), & |
|---|
| 820 | & intent(out) :: planck_surf |
|---|
| 821 | |
|---|
| 822 | ! Fraction of each band contributed by each g-point within |
|---|
| 823 | ! it. Since there are 16 bands, this array sums to 16 |
|---|
| 824 | real(jprb), parameter, dimension(1,140) :: frac & |
|---|
| 825 | = reshape( (/ 0.21227E+00, 0.18897E+00, 0.25491E+00, 0.17864E+00, 0.11735E+00, 0.38298E-01, 0.57871E-02, & |
|---|
| 826 | & 0.31753E-02, 0.53169E-03, 0.76476E-04, 0.16388E+00, 0.15241E+00, 0.14290E+00, 0.12864E+00, & |
|---|
| 827 | & 0.11615E+00, 0.10047E+00, 0.80013E-01, 0.60445E-01, 0.44918E-01, 0.63395E-02, 0.32942E-02, & |
|---|
| 828 | & 0.54541E-03, 0.15380E+00, 0.15194E+00, 0.14339E+00, 0.13138E+00, 0.11701E+00, 0.10081E+00, & |
|---|
| 829 | & 0.82296E-01, 0.61735E-01, 0.41918E-01, 0.45918E-02, 0.37743E-02, 0.30121E-02, 0.22500E-02, & |
|---|
| 830 | & 0.14490E-02, 0.55410E-03, 0.78364E-04, 0.15938E+00, 0.15146E+00, 0.14213E+00, 0.13079E+00, & |
|---|
| 831 | & 0.11672E+00, 0.10053E+00, 0.81566E-01, 0.61126E-01, 0.41150E-01, 0.44488E-02, 0.36950E-02, & |
|---|
| 832 | & 0.29101E-02, 0.21357E-02, 0.19609E-02, 0.14134E+00, 0.14390E+00, 0.13913E+00, 0.13246E+00, & |
|---|
| 833 | & 0.12185E+00, 0.10596E+00, 0.87518E-01, 0.66164E-01, 0.44862E-01, 0.49402E-02, 0.40857E-02, & |
|---|
| 834 | & 0.32288E-02, 0.23613E-02, 0.15406E-02, 0.58258E-03, 0.82171E-04, 0.29127E+00, 0.28252E+00, & |
|---|
| 835 | & 0.22590E+00, 0.14314E+00, 0.45494E-01, 0.71792E-02, 0.38483E-02, 0.65712E-03, 0.29810E+00, & |
|---|
| 836 | & 0.27559E+00, 0.11997E+00, 0.10351E+00, 0.84515E-01, 0.62253E-01, 0.41050E-01, 0.44217E-02, & |
|---|
| 837 | & 0.36946E-02, 0.29113E-02, 0.34290E-02, 0.55993E-03, 0.31441E+00, 0.27586E+00, 0.21297E+00, & |
|---|
| 838 | & 0.14064E+00, 0.45588E-01, 0.65665E-02, 0.34232E-02, 0.53199E-03, 0.19811E+00, 0.16833E+00, & |
|---|
| 839 | & 0.13536E+00, 0.11549E+00, 0.10649E+00, 0.93264E-01, 0.75720E-01, 0.56405E-01, 0.41865E-01, & |
|---|
| 840 | & 0.59331E-02, 0.26510E-02, 0.40040E-03, 0.32328E+00, 0.26636E+00, 0.21397E+00, 0.14038E+00, & |
|---|
| 841 | & 0.52142E-01, 0.38852E-02, 0.14601E+00, 0.13824E+00, 0.27703E+00, 0.22388E+00, 0.15446E+00, & |
|---|
| 842 | & 0.48687E-01, 0.98054E-02, 0.18870E-02, 0.11961E+00, 0.12106E+00, 0.13215E+00, 0.13516E+00, & |
|---|
| 843 | & 0.25249E+00, 0.16542E+00, 0.68157E-01, 0.59725E-02, 0.49258E+00, 0.33651E+00, 0.16182E+00, & |
|---|
| 844 | & 0.90984E-02, 0.95202E+00, 0.47978E-01, 0.91716E+00, 0.82857E-01, 0.77464E+00, 0.22536E+00 /), (/ 1,140 /) ) |
|---|
| 845 | |
|---|
| 846 | call planck_function_surf(1, 1, config, spread(temperature,1,1), & |
|---|
| 847 | & frac, planck_surf) |
|---|
| 848 | |
|---|
| 849 | end subroutine planck_function |
|---|
| 850 | |
|---|
| 851 | end module radiation_ifs_rrtm |
|---|
