| 1 | MODULE traqsr |
|---|
| 2 | !!====================================================================== |
|---|
| 3 | !! *** MODULE traqsr *** |
|---|
| 4 | !! Ocean physics: solar radiation penetration in the top ocean levels |
|---|
| 5 | !!====================================================================== |
|---|
| 6 | !! History : OPA ! 1990-10 (B. Blanke) Original code |
|---|
| 7 | !! 7.0 ! 1991-11 (G. Madec) |
|---|
| 8 | !! ! 1996-01 (G. Madec) s-coordinates |
|---|
| 9 | !! NEMO 1.0 ! 2002-06 (G. Madec) F90: Free form and module |
|---|
| 10 | !! - ! 2005-11 (G. Madec) zco, zps, sco coordinate |
|---|
| 11 | !! 3.2 ! 2009-04 (G. Madec & NEMO team) |
|---|
| 12 | !! 3.6 ! 2012-05 (C. Rousset) store attenuation coef for use in ice model |
|---|
| 13 | !! 3.6 ! 2015-12 (O. Aumont, J. Jouanno, C. Ethe) use vertical profile of chlorophyll |
|---|
| 14 | !! 3.7 ! 2015-11 (G. Madec, A. Coward) remove optimisation for fix volume |
|---|
| 15 | !!---------------------------------------------------------------------- |
|---|
| 16 | |
|---|
| 17 | !!---------------------------------------------------------------------- |
|---|
| 18 | !! tra_qsr : temperature trend due to the penetration of solar radiation |
|---|
| 19 | !! tra_qsr_init : initialization of the qsr penetration |
|---|
| 20 | !!---------------------------------------------------------------------- |
|---|
| 21 | USE oce ! ocean dynamics and active tracers |
|---|
| 22 | USE phycst ! physical constants |
|---|
| 23 | USE dom_oce ! ocean space and time domain |
|---|
| 24 | USE sbc_oce ! surface boundary condition: ocean |
|---|
| 25 | USE trc_oce ! share SMS/Ocean variables |
|---|
| 26 | USE trd_oce ! trends: ocean variables |
|---|
| 27 | USE trdtra ! trends manager: tracers |
|---|
| 28 | ! |
|---|
| 29 | USE in_out_manager ! I/O manager |
|---|
| 30 | USE prtctl ! Print control |
|---|
| 31 | USE iom ! I/O library |
|---|
| 32 | USE fldread ! read input fields |
|---|
| 33 | USE restart ! ocean restart |
|---|
| 34 | USE lib_mpp ! MPP library |
|---|
| 35 | USE lbclnk ! ocean lateral boundary conditions (or mpp link) |
|---|
| 36 | USE timing ! Timing |
|---|
| 37 | |
|---|
| 38 | IMPLICIT NONE |
|---|
| 39 | PRIVATE |
|---|
| 40 | |
|---|
| 41 | PUBLIC tra_qsr ! routine called by step.F90 (ln_traqsr=T) |
|---|
| 42 | PUBLIC tra_qsr_init ! routine called by nemogcm.F90 |
|---|
| 43 | |
|---|
| 44 | ! !!* Namelist namtra_qsr: penetrative solar radiation |
|---|
| 45 | LOGICAL , PUBLIC :: ln_traqsr !: light absorption (qsr) flag |
|---|
| 46 | LOGICAL , PUBLIC :: ln_qsr_rgb !: Red-Green-Blue light absorption flag |
|---|
| 47 | LOGICAL , PUBLIC :: ln_qsr_2bd !: 2 band light absorption flag |
|---|
| 48 | LOGICAL , PUBLIC :: ln_qsr_bio !: bio-model light absorption flag |
|---|
| 49 | INTEGER , PUBLIC :: nn_chldta !: use Chlorophyll data (=1) or not (=0) |
|---|
| 50 | REAL(wp), PUBLIC :: rn_abs !: fraction absorbed in the very near surface (RGB & 2 bands) |
|---|
| 51 | REAL(wp), PUBLIC :: rn_si0 !: very near surface depth of extinction (RGB & 2 bands) |
|---|
| 52 | REAL(wp), PUBLIC :: rn_si1 !: deepest depth of extinction (water type I) (2 bands) |
|---|
| 53 | ! |
|---|
| 54 | INTEGER , PUBLIC :: nksr !: levels below which the light cannot penetrate (depth larger than 391 m) |
|---|
| 55 | |
|---|
| 56 | INTEGER, PARAMETER :: np_RGB = 1 ! R-G-B light penetration with constant Chlorophyll |
|---|
| 57 | INTEGER, PARAMETER :: np_RGBc = 2 ! R-G-B light penetration with Chlorophyll data |
|---|
| 58 | INTEGER, PARAMETER :: np_2BD = 3 ! 2 bands light penetration |
|---|
| 59 | INTEGER, PARAMETER :: np_BIO = 4 ! bio-model light penetration |
|---|
| 60 | ! |
|---|
| 61 | INTEGER :: nqsr ! user choice of the type of light penetration |
|---|
| 62 | REAL(wp) :: xsi0r ! inverse of rn_si0 |
|---|
| 63 | REAL(wp) :: xsi1r ! inverse of rn_si1 |
|---|
| 64 | ! |
|---|
| 65 | REAL(wp) , DIMENSION(3,61) :: rkrgb ! tabulated attenuation coefficients for RGB absorption |
|---|
| 66 | TYPE(FLD), ALLOCATABLE, DIMENSION(:) :: sf_chl ! structure of input Chl (file informations, fields read) |
|---|
| 67 | |
|---|
| 68 | !! * Substitutions |
|---|
| 69 | # include "vectopt_loop_substitute.h90" |
|---|
| 70 | !!---------------------------------------------------------------------- |
|---|
| 71 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
|---|
| 72 | !! $Id$ |
|---|
| 73 | !! Software governed by the CeCILL license (see ./LICENSE) |
|---|
| 74 | !!---------------------------------------------------------------------- |
|---|
| 75 | CONTAINS |
|---|
| 76 | |
|---|
| 77 | SUBROUTINE tra_qsr( kt ) |
|---|
| 78 | !!---------------------------------------------------------------------- |
|---|
| 79 | !! *** ROUTINE tra_qsr *** |
|---|
| 80 | !! |
|---|
| 81 | !! ** Purpose : Compute the temperature trend due to the solar radiation |
|---|
| 82 | !! penetration and add it to the general temperature trend. |
|---|
| 83 | !! |
|---|
| 84 | !! ** Method : The profile of the solar radiation within the ocean is defined |
|---|
| 85 | !! through 2 wavebands (rn_si0,rn_si1) or 3 wavebands (RGB) and a ratio rn_abs |
|---|
| 86 | !! Considering the 2 wavebands case: |
|---|
| 87 | !! I(k) = Qsr*( rn_abs*EXP(z(k)/rn_si0) + (1.-rn_abs)*EXP(z(k)/rn_si1) ) |
|---|
| 88 | !! The temperature trend associated with the solar radiation penetration |
|---|
| 89 | !! is given by : zta = 1/e3t dk[ I ] / (rau0*Cp) |
|---|
| 90 | !! At the bottom, boudary condition for the radiation is no flux : |
|---|
| 91 | !! all heat which has not been absorbed in the above levels is put |
|---|
| 92 | !! in the last ocean level. |
|---|
| 93 | !! The computation is only done down to the level where |
|---|
| 94 | !! I(k) < 1.e-15 W/m2 (i.e. over the top nksr levels) . |
|---|
| 95 | !! |
|---|
| 96 | !! ** Action : - update ta with the penetrative solar radiation trend |
|---|
| 97 | !! - send trend for further diagnostics (l_trdtra=T) |
|---|
| 98 | !! |
|---|
| 99 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
|---|
| 100 | !! Lengaigne et al. 2007, Clim. Dyn., V28, 5, 503-516. |
|---|
| 101 | !! Morel, A. et Berthon, JF, 1989, Limnol Oceanogr 34(8), 1545-1562 |
|---|
| 102 | !!---------------------------------------------------------------------- |
|---|
| 103 | INTEGER, INTENT(in) :: kt ! ocean time-step |
|---|
| 104 | ! |
|---|
| 105 | INTEGER :: ji, jj, jk ! dummy loop indices |
|---|
| 106 | INTEGER :: irgb ! local integers |
|---|
| 107 | REAL(wp) :: zchl, zcoef, z1_2 ! local scalars |
|---|
| 108 | REAL(wp) :: zc0 , zc1 , zc2 , zc3 ! - - |
|---|
| 109 | REAL(wp) :: zzc0, zzc1, zzc2, zzc3 ! - - |
|---|
| 110 | REAL(wp) :: zz0 , zz1 ! - - |
|---|
| 111 | REAL(wp) :: zCb, zCmax, zze, zpsi, zpsimax, zdelpsi, zCtot, zCze |
|---|
| 112 | REAL(wp) :: zlogc, zlogc2, zlogc3 |
|---|
| 113 | REAL(wp), ALLOCATABLE, DIMENSION(:,:) :: zekb, zekg, zekr |
|---|
| 114 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: ze0, ze1, ze2, ze3, zea, ztrdt |
|---|
| 115 | REAL(wp), ALLOCATABLE, DIMENSION(:,:,:) :: zetot, zchl3d |
|---|
| 116 | !!---------------------------------------------------------------------- |
|---|
| 117 | ! |
|---|
| 118 | IF( ln_timing ) CALL timing_start('tra_qsr') |
|---|
| 119 | ! |
|---|
| 120 | IF( kt == nit000 .AND. lwp) THEN |
|---|
| 121 | WRITE(numout,*) |
|---|
| 122 | WRITE(numout,*) 'tra_qsr : penetration of the surface solar radiation' |
|---|
| 123 | WRITE(numout,*) '~~~~~~~' |
|---|
| 124 | IF(lflush) CALL FLUSH(numout) |
|---|
| 125 | ENDIF |
|---|
| 126 | ! |
|---|
| 127 | IF( l_trdtra ) THEN ! trends diagnostic: save the input temperature trend |
|---|
| 128 | ALLOCATE( ztrdt(jpi,jpj,jpk) ) |
|---|
| 129 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) |
|---|
| 130 | ENDIF |
|---|
| 131 | ! |
|---|
| 132 | ! !-----------------------------------! |
|---|
| 133 | ! ! before qsr induced heat content ! |
|---|
| 134 | ! !-----------------------------------! |
|---|
| 135 | IF( kt == nit000 ) THEN !== 1st time step ==! |
|---|
| 136 | !!gm case neuler not taken into account.... |
|---|
| 137 | IF( ln_rstart .AND. iom_varid( numror, 'qsr_hc_b', ldstop = .FALSE. ) > 0 ) THEN ! read in restart |
|---|
| 138 | IF(lwp .AND. nprint >0) THEN |
|---|
| 139 | WRITE(numout,*) ' nit000-1 qsr tracer content forcing field read in the restart file' |
|---|
| 140 | IF(lflush) CALL FLUSH(numout) |
|---|
| 141 | ENDIF |
|---|
| 142 | z1_2 = 0.5_wp |
|---|
| 143 | CALL iom_get( numror, jpdom_autoglo, 'qsr_hc_b', qsr_hc_b, ldxios = lrxios ) ! before heat content trend due to Qsr flux |
|---|
| 144 | ELSE ! No restart or restart not found: Euler forward time stepping |
|---|
| 145 | z1_2 = 1._wp |
|---|
| 146 | qsr_hc_b(:,:,:) = 0._wp |
|---|
| 147 | ENDIF |
|---|
| 148 | ELSE !== Swap of qsr heat content ==! |
|---|
| 149 | z1_2 = 0.5_wp |
|---|
| 150 | qsr_hc_b(:,:,:) = qsr_hc(:,:,:) |
|---|
| 151 | ENDIF |
|---|
| 152 | ! |
|---|
| 153 | ! !--------------------------------! |
|---|
| 154 | SELECT CASE( nqsr ) ! now qsr induced heat content ! |
|---|
| 155 | ! !--------------------------------! |
|---|
| 156 | ! |
|---|
| 157 | CASE( np_BIO ) !== bio-model fluxes ==! |
|---|
| 158 | ! |
|---|
| 159 | DO jk = 1, nksr |
|---|
| 160 | qsr_hc(:,:,jk) = r1_rau0_rcp * ( etot3(:,:,jk) - etot3(:,:,jk+1) ) |
|---|
| 161 | END DO |
|---|
| 162 | ! |
|---|
| 163 | CASE( np_RGB , np_RGBc ) !== R-G-B fluxes ==! |
|---|
| 164 | ! |
|---|
| 165 | ALLOCATE( zekb(jpi,jpj) , zekg(jpi,jpj) , zekr (jpi,jpj) , & |
|---|
| 166 | & ze0 (jpi,jpj,jpk) , ze1 (jpi,jpj,jpk) , ze2 (jpi,jpj,jpk) , & |
|---|
| 167 | & ze3 (jpi,jpj,jpk) , zea (jpi,jpj,jpk) , zchl3d(jpi,jpj,jpk) ) |
|---|
| 168 | ! |
|---|
| 169 | IF( nqsr == np_RGBc ) THEN !* Variable Chlorophyll |
|---|
| 170 | CALL fld_read( kt, 1, sf_chl ) ! Read Chl data and provides it at the current time step |
|---|
| 171 | DO jk = 1, nksr + 1 |
|---|
| 172 | DO jj = 2, jpjm1 ! Separation in R-G-B depending of the surface Chl |
|---|
| 173 | DO ji = fs_2, fs_jpim1 |
|---|
| 174 | zchl = sf_chl(1)%fnow(ji,jj,1) |
|---|
| 175 | zCtot = 40.6 * zchl**0.459 |
|---|
| 176 | zze = 568.2 * zCtot**(-0.746) |
|---|
| 177 | IF( zze > 102. ) zze = 200.0 * zCtot**(-0.293) |
|---|
| 178 | zpsi = gdepw_n(ji,jj,jk) / zze |
|---|
| 179 | ! |
|---|
| 180 | zlogc = LOG( zchl ) |
|---|
| 181 | zlogc2 = zlogc * zlogc |
|---|
| 182 | zlogc3 = zlogc * zlogc * zlogc |
|---|
| 183 | zCb = 0.768 + 0.087 * zlogc - 0.179 * zlogc2 - 0.025 * zlogc3 |
|---|
| 184 | zCmax = 0.299 - 0.289 * zlogc + 0.579 * zlogc2 |
|---|
| 185 | zpsimax = 0.6 - 0.640 * zlogc + 0.021 * zlogc2 + 0.115 * zlogc3 |
|---|
| 186 | zdelpsi = 0.710 + 0.159 * zlogc + 0.021 * zlogc2 |
|---|
| 187 | zCze = 1.12 * (zchl)**0.803 |
|---|
| 188 | ! |
|---|
| 189 | zchl3d(ji,jj,jk) = zCze * ( zCb + zCmax * EXP( -( (zpsi - zpsimax) / zdelpsi )**2 ) ) |
|---|
| 190 | END DO |
|---|
| 191 | ! |
|---|
| 192 | END DO |
|---|
| 193 | END DO |
|---|
| 194 | ELSE !* constant chrlorophyll |
|---|
| 195 | DO jk = 1, nksr + 1 |
|---|
| 196 | zchl3d(:,:,jk) = 0.05 |
|---|
| 197 | ENDDO |
|---|
| 198 | ENDIF |
|---|
| 199 | ! |
|---|
| 200 | zcoef = ( 1. - rn_abs ) / 3._wp !* surface equi-partition in R-G-B |
|---|
| 201 | DO jj = 2, jpjm1 |
|---|
| 202 | DO ji = fs_2, fs_jpim1 |
|---|
| 203 | ze0(ji,jj,1) = rn_abs * qsr(ji,jj) |
|---|
| 204 | ze1(ji,jj,1) = zcoef * qsr(ji,jj) |
|---|
| 205 | ze2(ji,jj,1) = zcoef * qsr(ji,jj) |
|---|
| 206 | ze3(ji,jj,1) = zcoef * qsr(ji,jj) |
|---|
| 207 | zea(ji,jj,1) = qsr(ji,jj) |
|---|
| 208 | END DO |
|---|
| 209 | END DO |
|---|
| 210 | ! |
|---|
| 211 | DO jk = 2, nksr+1 !* interior equi-partition in R-G-B depending of vertical profile of Chl |
|---|
| 212 | DO jj = 2, jpjm1 |
|---|
| 213 | DO ji = fs_2, fs_jpim1 |
|---|
| 214 | zchl = MIN( 10. , MAX( 0.03, zchl3d(ji,jj,jk) ) ) |
|---|
| 215 | irgb = NINT( 41 + 20.*LOG10(zchl) + 1.e-15 ) |
|---|
| 216 | zekb(ji,jj) = rkrgb(1,irgb) |
|---|
| 217 | zekg(ji,jj) = rkrgb(2,irgb) |
|---|
| 218 | zekr(ji,jj) = rkrgb(3,irgb) |
|---|
| 219 | END DO |
|---|
| 220 | END DO |
|---|
| 221 | |
|---|
| 222 | DO jj = 2, jpjm1 |
|---|
| 223 | DO ji = fs_2, fs_jpim1 |
|---|
| 224 | zc0 = ze0(ji,jj,jk-1) * EXP( - e3t_n(ji,jj,jk-1) * xsi0r ) |
|---|
| 225 | zc1 = ze1(ji,jj,jk-1) * EXP( - e3t_n(ji,jj,jk-1) * zekb(ji,jj) ) |
|---|
| 226 | zc2 = ze2(ji,jj,jk-1) * EXP( - e3t_n(ji,jj,jk-1) * zekg(ji,jj) ) |
|---|
| 227 | zc3 = ze3(ji,jj,jk-1) * EXP( - e3t_n(ji,jj,jk-1) * zekr(ji,jj) ) |
|---|
| 228 | ze0(ji,jj,jk) = zc0 |
|---|
| 229 | ze1(ji,jj,jk) = zc1 |
|---|
| 230 | ze2(ji,jj,jk) = zc2 |
|---|
| 231 | ze3(ji,jj,jk) = zc3 |
|---|
| 232 | zea(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * wmask(ji,jj,jk) |
|---|
| 233 | END DO |
|---|
| 234 | END DO |
|---|
| 235 | END DO |
|---|
| 236 | ! |
|---|
| 237 | DO jk = 1, nksr !* now qsr induced heat content |
|---|
| 238 | DO jj = 2, jpjm1 |
|---|
| 239 | DO ji = fs_2, fs_jpim1 |
|---|
| 240 | qsr_hc(ji,jj,jk) = r1_rau0_rcp * ( zea(ji,jj,jk) - zea(ji,jj,jk+1) ) |
|---|
| 241 | END DO |
|---|
| 242 | END DO |
|---|
| 243 | END DO |
|---|
| 244 | ! |
|---|
| 245 | DEALLOCATE( zekb , zekg , zekr , ze0 , ze1 , ze2 , ze3 , zea , zchl3d ) |
|---|
| 246 | ! |
|---|
| 247 | CASE( np_2BD ) !== 2-bands fluxes ==! |
|---|
| 248 | ! |
|---|
| 249 | zz0 = rn_abs * r1_rau0_rcp ! surface equi-partition in 2-bands |
|---|
| 250 | zz1 = ( 1. - rn_abs ) * r1_rau0_rcp |
|---|
| 251 | DO jk = 1, nksr ! solar heat absorbed at T-point in the top 400m |
|---|
| 252 | DO jj = 2, jpjm1 |
|---|
| 253 | DO ji = fs_2, fs_jpim1 |
|---|
| 254 | zc0 = zz0 * EXP( -gdepw_n(ji,jj,jk )*xsi0r ) + zz1 * EXP( -gdepw_n(ji,jj,jk )*xsi1r ) |
|---|
| 255 | zc1 = zz0 * EXP( -gdepw_n(ji,jj,jk+1)*xsi0r ) + zz1 * EXP( -gdepw_n(ji,jj,jk+1)*xsi1r ) |
|---|
| 256 | qsr_hc(ji,jj,jk) = qsr(ji,jj) * ( zc0 * wmask(ji,jj,jk) - zc1 * wmask(ji,jj,jk+1) ) |
|---|
| 257 | END DO |
|---|
| 258 | END DO |
|---|
| 259 | END DO |
|---|
| 260 | ! |
|---|
| 261 | END SELECT |
|---|
| 262 | ! |
|---|
| 263 | ! !-----------------------------! |
|---|
| 264 | DO jk = 1, nksr ! update to the temp. trend ! |
|---|
| 265 | DO jj = 2, jpjm1 !-----------------------------! |
|---|
| 266 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 267 | tsa(ji,jj,jk,jp_tem) = tsa(ji,jj,jk,jp_tem) & |
|---|
| 268 | & + z1_2 * ( qsr_hc_b(ji,jj,jk) + qsr_hc(ji,jj,jk) ) / e3t_n(ji,jj,jk) |
|---|
| 269 | END DO |
|---|
| 270 | END DO |
|---|
| 271 | END DO |
|---|
| 272 | ! |
|---|
| 273 | ! sea-ice: store the 1st ocean level attenuation coefficient |
|---|
| 274 | DO jj = 2, jpjm1 |
|---|
| 275 | DO ji = fs_2, fs_jpim1 ! vector opt. |
|---|
| 276 | IF( qsr(ji,jj) /= 0._wp ) THEN ; fraqsr_1lev(ji,jj) = qsr_hc(ji,jj,1) / ( r1_rau0_rcp * qsr(ji,jj) ) |
|---|
| 277 | ELSE ; fraqsr_1lev(ji,jj) = 1._wp |
|---|
| 278 | ENDIF |
|---|
| 279 | END DO |
|---|
| 280 | END DO |
|---|
| 281 | CALL lbc_lnk( 'traqsr', fraqsr_1lev(:,:), 'T', 1._wp ) |
|---|
| 282 | ! |
|---|
| 283 | IF( iom_use('qsr3d') ) THEN ! output the shortwave Radiation distribution |
|---|
| 284 | ALLOCATE( zetot(jpi,jpj,jpk) ) |
|---|
| 285 | zetot(:,:,nksr+1:jpk) = 0._wp ! below ~400m set to zero |
|---|
| 286 | DO jk = nksr, 1, -1 |
|---|
| 287 | zetot(:,:,jk) = zetot(:,:,jk+1) + qsr_hc(:,:,jk) * rau0_rcp |
|---|
| 288 | END DO |
|---|
| 289 | CALL iom_put( 'qsr3d', zetot ) ! 3D distribution of shortwave Radiation |
|---|
| 290 | DEALLOCATE( zetot ) |
|---|
| 291 | ENDIF |
|---|
| 292 | ! |
|---|
| 293 | IF( lrst_oce ) THEN ! write in the ocean restart file |
|---|
| 294 | IF( lwxios ) CALL iom_swap( cwxios_context ) |
|---|
| 295 | CALL iom_rstput( kt, nitrst, numrow, 'qsr_hc_b' , qsr_hc , ldxios = lwxios ) |
|---|
| 296 | CALL iom_rstput( kt, nitrst, numrow, 'fraqsr_1lev', fraqsr_1lev, ldxios = lwxios ) |
|---|
| 297 | IF( lwxios ) CALL iom_swap( cxios_context ) |
|---|
| 298 | ENDIF |
|---|
| 299 | ! |
|---|
| 300 | IF( l_trdtra ) THEN ! qsr tracers trends saved for diagnostics |
|---|
| 301 | ztrdt(:,:,:) = tsa(:,:,:,jp_tem) - ztrdt(:,:,:) |
|---|
| 302 | CALL trd_tra( kt, 'TRA', jp_tem, jptra_qsr, ztrdt ) |
|---|
| 303 | DEALLOCATE( ztrdt ) |
|---|
| 304 | ENDIF |
|---|
| 305 | ! ! print mean trends (used for debugging) |
|---|
| 306 | IF(ln_ctl) CALL prt_ctl( tab3d_1=tsa(:,:,:,jp_tem), clinfo1=' qsr - Ta: ', mask1=tmask, clinfo3='tra-ta' ) |
|---|
| 307 | ! |
|---|
| 308 | IF( ln_timing ) CALL timing_stop('tra_qsr') |
|---|
| 309 | ! |
|---|
| 310 | END SUBROUTINE tra_qsr |
|---|
| 311 | |
|---|
| 312 | |
|---|
| 313 | SUBROUTINE tra_qsr_init |
|---|
| 314 | !!---------------------------------------------------------------------- |
|---|
| 315 | !! *** ROUTINE tra_qsr_init *** |
|---|
| 316 | !! |
|---|
| 317 | !! ** Purpose : Initialization for the penetrative solar radiation |
|---|
| 318 | !! |
|---|
| 319 | !! ** Method : The profile of solar radiation within the ocean is set |
|---|
| 320 | !! from two length scale of penetration (rn_si0,rn_si1) and a ratio |
|---|
| 321 | !! (rn_abs). These parameters are read in the namtra_qsr namelist. The |
|---|
| 322 | !! default values correspond to clear water (type I in Jerlov' |
|---|
| 323 | !! (1968) classification. |
|---|
| 324 | !! called by tra_qsr at the first timestep (nit000) |
|---|
| 325 | !! |
|---|
| 326 | !! ** Action : - initialize rn_si0, rn_si1 and rn_abs |
|---|
| 327 | !! |
|---|
| 328 | !! Reference : Jerlov, N. G., 1968 Optical Oceanography, Elsevier, 194pp. |
|---|
| 329 | !!---------------------------------------------------------------------- |
|---|
| 330 | INTEGER :: ji, jj, jk ! dummy loop indices |
|---|
| 331 | INTEGER :: ios, irgb, ierror, ioptio ! local integer |
|---|
| 332 | REAL(wp) :: zz0, zc0 , zc1, zcoef ! local scalars |
|---|
| 333 | REAL(wp) :: zz1, zc2 , zc3, zchl ! - - |
|---|
| 334 | ! |
|---|
| 335 | CHARACTER(len=100) :: cn_dir ! Root directory for location of ssr files |
|---|
| 336 | TYPE(FLD_N) :: sn_chl ! informations about the chlorofyl field to be read |
|---|
| 337 | !! |
|---|
| 338 | NAMELIST/namtra_qsr/ sn_chl, cn_dir, ln_qsr_rgb, ln_qsr_2bd, ln_qsr_bio, & |
|---|
| 339 | & nn_chldta, rn_abs, rn_si0, rn_si1 |
|---|
| 340 | !!---------------------------------------------------------------------- |
|---|
| 341 | ! |
|---|
| 342 | REWIND( numnam_ref ) ! Namelist namtra_qsr in reference namelist |
|---|
| 343 | READ ( numnam_ref, namtra_qsr, IOSTAT = ios, ERR = 901) |
|---|
| 344 | 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtra_qsr in reference namelist', lwp ) |
|---|
| 345 | ! |
|---|
| 346 | REWIND( numnam_cfg ) ! Namelist namtra_qsr in configuration namelist |
|---|
| 347 | READ ( numnam_cfg, namtra_qsr, IOSTAT = ios, ERR = 902 ) |
|---|
| 348 | 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtra_qsr in configuration namelist', lwp ) |
|---|
| 349 | IF(lwm .AND. nprint > 2) WRITE ( numond, namtra_qsr ) |
|---|
| 350 | ! |
|---|
| 351 | IF(lwp) THEN ! control print |
|---|
| 352 | WRITE(numout,*) |
|---|
| 353 | WRITE(numout,*) 'tra_qsr_init : penetration of the surface solar radiation' |
|---|
| 354 | WRITE(numout,*) '~~~~~~~~~~~~' |
|---|
| 355 | WRITE(numout,*) ' Namelist namtra_qsr : set the parameter of penetration' |
|---|
| 356 | WRITE(numout,*) ' RGB (Red-Green-Blue) light penetration ln_qsr_rgb = ', ln_qsr_rgb |
|---|
| 357 | WRITE(numout,*) ' 2 band light penetration ln_qsr_2bd = ', ln_qsr_2bd |
|---|
| 358 | WRITE(numout,*) ' bio-model light penetration ln_qsr_bio = ', ln_qsr_bio |
|---|
| 359 | WRITE(numout,*) ' RGB : Chl data (=1) or cst value (=0) nn_chldta = ', nn_chldta |
|---|
| 360 | WRITE(numout,*) ' RGB & 2 bands: fraction of light (rn_si1) rn_abs = ', rn_abs |
|---|
| 361 | WRITE(numout,*) ' RGB & 2 bands: shortess depth of extinction rn_si0 = ', rn_si0 |
|---|
| 362 | WRITE(numout,*) ' 2 bands: longest depth of extinction rn_si1 = ', rn_si1 |
|---|
| 363 | WRITE(numout,*) |
|---|
| 364 | IF(lflush) CALL FLUSH(numout) |
|---|
| 365 | ENDIF |
|---|
| 366 | ! |
|---|
| 367 | ioptio = 0 ! Parameter control |
|---|
| 368 | IF( ln_qsr_rgb ) ioptio = ioptio + 1 |
|---|
| 369 | IF( ln_qsr_2bd ) ioptio = ioptio + 1 |
|---|
| 370 | IF( ln_qsr_bio ) ioptio = ioptio + 1 |
|---|
| 371 | ! |
|---|
| 372 | IF( ioptio /= 1 ) CALL ctl_stop( 'Choose ONE type of light penetration in namelist namtra_qsr', & |
|---|
| 373 | & ' 2 bands, 3 RGB bands or bio-model light penetration' ) |
|---|
| 374 | ! |
|---|
| 375 | IF( ln_qsr_rgb .AND. nn_chldta == 0 ) nqsr = np_RGB |
|---|
| 376 | IF( ln_qsr_rgb .AND. nn_chldta == 1 ) nqsr = np_RGBc |
|---|
| 377 | IF( ln_qsr_2bd ) nqsr = np_2BD |
|---|
| 378 | IF( ln_qsr_bio ) nqsr = np_BIO |
|---|
| 379 | ! |
|---|
| 380 | ! ! Initialisation |
|---|
| 381 | xsi0r = 1._wp / rn_si0 |
|---|
| 382 | xsi1r = 1._wp / rn_si1 |
|---|
| 383 | ! |
|---|
| 384 | SELECT CASE( nqsr ) |
|---|
| 385 | ! |
|---|
| 386 | CASE( np_RGB , np_RGBc ) !== Red-Green-Blue light penetration ==! |
|---|
| 387 | ! |
|---|
| 388 | IF(lwp) WRITE(numout,*) ' ==>>> R-G-B light penetration ' |
|---|
| 389 | ! |
|---|
| 390 | CALL trc_oce_rgb( rkrgb ) ! tabulated attenuation coef. |
|---|
| 391 | ! |
|---|
| 392 | nksr = trc_oce_ext_lev( r_si2, 33._wp ) ! level of light extinction |
|---|
| 393 | ! |
|---|
| 394 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
|---|
| 395 | ! |
|---|
| 396 | IF( nqsr == np_RGBc ) THEN ! Chl data : set sf_chl structure |
|---|
| 397 | IF(lwp) WRITE(numout,*) ' ==>>> Chlorophyll read in a file' |
|---|
| 398 | ALLOCATE( sf_chl(1), STAT=ierror ) |
|---|
| 399 | IF( ierror > 0 ) THEN |
|---|
| 400 | CALL ctl_stop( 'tra_qsr_init: unable to allocate sf_chl structure' ) ; RETURN |
|---|
| 401 | ENDIF |
|---|
| 402 | ALLOCATE( sf_chl(1)%fnow(jpi,jpj,1) ) |
|---|
| 403 | IF( sn_chl%ln_tint ) ALLOCATE( sf_chl(1)%fdta(jpi,jpj,1,2) ) |
|---|
| 404 | ! ! fill sf_chl with sn_chl and control print |
|---|
| 405 | CALL fld_fill( sf_chl, (/ sn_chl /), cn_dir, 'tra_qsr_init', & |
|---|
| 406 | & 'Solar penetration function of read chlorophyll', 'namtra_qsr' , no_print ) |
|---|
| 407 | ENDIF |
|---|
| 408 | IF( nqsr == np_RGB ) THEN ! constant Chl |
|---|
| 409 | IF(lwp) WRITE(numout,*) ' ==>>> Constant Chlorophyll concentration = 0.05' |
|---|
| 410 | ENDIF |
|---|
| 411 | ! |
|---|
| 412 | CASE( np_2BD ) !== 2 bands light penetration ==! |
|---|
| 413 | ! |
|---|
| 414 | IF(lwp) WRITE(numout,*) ' ==>>> 2 bands light penetration' |
|---|
| 415 | ! |
|---|
| 416 | nksr = trc_oce_ext_lev( rn_si1, 100._wp ) ! level of light extinction |
|---|
| 417 | IF(lwp) WRITE(numout,*) ' level of light extinction = ', nksr, ' ref depth = ', gdepw_1d(nksr+1), ' m' |
|---|
| 418 | ! |
|---|
| 419 | CASE( np_BIO ) !== BIO light penetration ==! |
|---|
| 420 | ! |
|---|
| 421 | IF(lwp) WRITE(numout,*) ' ==>>> bio-model light penetration' |
|---|
| 422 | IF( .NOT.lk_top ) CALL ctl_stop( 'No bio model : ln_qsr_bio = true impossible ' ) |
|---|
| 423 | ! |
|---|
| 424 | END SELECT |
|---|
| 425 | IF(lwp .AND. lflush) CALL FLUSH(numout) |
|---|
| 426 | ! |
|---|
| 427 | qsr_hc(:,:,:) = 0._wp ! now qsr heat content set to zero where it will not be computed |
|---|
| 428 | ! |
|---|
| 429 | ! 1st ocean level attenuation coefficient (used in sbcssm) |
|---|
| 430 | IF( iom_varid( numror, 'fraqsr_1lev', ldstop = .FALSE. ) > 0 ) THEN |
|---|
| 431 | CALL iom_get( numror, jpdom_autoglo, 'fraqsr_1lev' , fraqsr_1lev, ldxios = lrxios ) |
|---|
| 432 | ELSE |
|---|
| 433 | fraqsr_1lev(:,:) = 1._wp ! default : no penetration |
|---|
| 434 | ENDIF |
|---|
| 435 | ! |
|---|
| 436 | IF( lwxios ) THEN |
|---|
| 437 | CALL iom_set_rstw_var_active('qsr_hc_b') |
|---|
| 438 | CALL iom_set_rstw_var_active('fraqsr_1lev') |
|---|
| 439 | ENDIF |
|---|
| 440 | ! |
|---|
| 441 | END SUBROUTINE tra_qsr_init |
|---|
| 442 | |
|---|
| 443 | !!====================================================================== |
|---|
| 444 | END MODULE traqsr |
|---|
