[935] | 1 | MODULE p4zopt |
---|
| 2 | !!====================================================================== |
---|
| 3 | !! *** MODULE p4zopt *** |
---|
[1445] | 4 | !! TOP - PISCES : Compute the light availability in the water column |
---|
[935] | 5 | !!====================================================================== |
---|
| 6 | !! History : 1.0 ! 2004 (O. Aumont) Original code |
---|
| 7 | !! 2.0 ! 2007-12 (C. Ethe, G. Madec) F90 |
---|
[1445] | 8 | !! 3.2 ! 2009-04 (C. Ethe, G. Madec) optimisaion |
---|
[935] | 9 | !!---------------------------------------------------------------------- |
---|
[1445] | 10 | #if defined key_pisces |
---|
[935] | 11 | !!---------------------------------------------------------------------- |
---|
| 12 | !! 'key_pisces' PISCES bio-model |
---|
| 13 | !!---------------------------------------------------------------------- |
---|
[1445] | 14 | !! p4z_opt : light availability in the water column |
---|
[935] | 15 | !!---------------------------------------------------------------------- |
---|
[1445] | 16 | USE trc ! tracer variables |
---|
| 17 | USE oce_trc ! tracer-ocean share variables |
---|
| 18 | USE trc_oce ! ocean-tracer share variables |
---|
| 19 | USE sms_pisces ! Source Minus Sink of PISCES |
---|
[1457] | 20 | USE iom |
---|
[935] | 21 | |
---|
| 22 | IMPLICIT NONE |
---|
| 23 | PRIVATE |
---|
| 24 | |
---|
[1445] | 25 | PUBLIC p4z_opt ! called in p4zbio.F90 module |
---|
[935] | 26 | |
---|
[1445] | 27 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpk) :: etot, enano, ediat !: PAR for phyto, nano and diat |
---|
| 28 | REAL(wp), PUBLIC, DIMENSION(jpi,jpj,jpk) :: emoy !: averaged PAR in the mixed layer |
---|
[935] | 29 | |
---|
[1445] | 30 | INTEGER :: nksrp ! levels below which the light cannot penetrate ( depth larger than 391 m) |
---|
| 31 | REAL(wp) :: & |
---|
| 32 | parlux = 0.43 / 3.e0 |
---|
[935] | 33 | |
---|
[1445] | 34 | REAL(wp), DIMENSION(3,61), PUBLIC :: xkrgb !: tabulated attenuation coefficients for RGB absorption |
---|
| 35 | |
---|
[935] | 36 | !!* Substitution |
---|
[1808] | 37 | # include "top_substitute.h90" |
---|
[935] | 38 | !!---------------------------------------------------------------------- |
---|
| 39 | !! NEMO/TOP 2.0 , LOCEAN-IPSL (2007) |
---|
[1152] | 40 | !! $Id$ |
---|
[935] | 41 | !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt) |
---|
| 42 | !!---------------------------------------------------------------------- |
---|
| 43 | |
---|
| 44 | CONTAINS |
---|
| 45 | |
---|
| 46 | SUBROUTINE p4z_opt(kt, jnt) |
---|
| 47 | !!--------------------------------------------------------------------- |
---|
| 48 | !! *** ROUTINE p4z_opt *** |
---|
| 49 | !! |
---|
| 50 | !! ** Purpose : Compute the light availability in the water column |
---|
| 51 | !! depending on the depth and the chlorophyll concentration |
---|
| 52 | !! |
---|
| 53 | !! ** Method : - ??? |
---|
| 54 | !!--------------------------------------------------------------------- |
---|
| 55 | INTEGER, INTENT(in) :: kt, jnt ! ocean time step |
---|
[1445] | 56 | INTEGER :: ji, jj, jk, jc |
---|
[935] | 57 | INTEGER :: irgb |
---|
[1445] | 58 | REAL(wp) :: zchl, zxsi0r |
---|
| 59 | REAL(wp) :: zc0 , zc1 , zc2, zc3 |
---|
[935] | 60 | REAL(wp), DIMENSION(jpi,jpj) :: zdepmoy, zetmp |
---|
| 61 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zekg, zekr, zekb |
---|
[1445] | 62 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: ze1 , ze2 , ze3, ze0 |
---|
[1457] | 63 | #if defined key_trc_diaadd && defined key_iomput |
---|
| 64 | REAL(wp), DIMENSION(jpi,jpj) :: zw2d |
---|
| 65 | REAL(wp), DIMENSION(jpi,jpj,jpk) :: zw3d |
---|
| 66 | #endif |
---|
[935] | 67 | !!--------------------------------------------------------------------- |
---|
| 68 | |
---|
| 69 | |
---|
[1445] | 70 | ! !* tabulated attenuation coef. |
---|
| 71 | IF( kt * jnt == nittrc000 ) THEN |
---|
| 72 | ! ! level of light extinction |
---|
| 73 | nksrp = trc_oce_ext_lev( rn_si2, 0.33e2 ) |
---|
| 74 | IF(lwp) THEN |
---|
| 75 | WRITE(numout,*) |
---|
| 76 | WRITE(numout,*) ' level max of computation of qsr = ', nksrp, ' ref depth = ', gdepw_0(nksrp+1), ' m' |
---|
| 77 | ENDIF |
---|
| 78 | !! CALL trc_oce_rgb( xkrgb ) ! tabulated attenuation coefficients |
---|
| 79 | CALL trc_oce_rgb_read( xkrgb ) ! tabulated attenuation coefficients |
---|
| 80 | etot (:,:,:) = 0.e0 |
---|
| 81 | enano(:,:,:) = 0.e0 |
---|
| 82 | ediat(:,:,:) = 0.e0 |
---|
| 83 | IF( ln_qsr_bio ) etot3(:,:,:) = 0.e0 |
---|
| 84 | ENDIF |
---|
[935] | 85 | |
---|
| 86 | |
---|
| 87 | ! Initialisation of variables used to compute PAR |
---|
| 88 | ! ----------------------------------------------- |
---|
[1445] | 89 | ze1 (:,:,jpk) = 0.e0 |
---|
| 90 | ze2 (:,:,jpk) = 0.e0 |
---|
| 91 | ze3 (:,:,jpk) = 0.e0 |
---|
[935] | 92 | |
---|
[1445] | 93 | ! !* attenuation coef. function of Chlorophyll and wavelength (Red-Green-Blue) |
---|
| 94 | DO jk = 1, jpkm1 ! -------------------------------------------------------- |
---|
| 95 | !CDIR NOVERRCHK |
---|
[935] | 96 | DO jj = 1, jpj |
---|
[1445] | 97 | !CDIR NOVERRCHK |
---|
[935] | 98 | DO ji = 1, jpi |
---|
| 99 | zchl = ( trn(ji,jj,jk,jpnch) + trn(ji,jj,jk,jpdch) + rtrn ) * 1.e6 |
---|
[1445] | 100 | zchl = MIN( 10. , MAX( 0.03, zchl ) ) |
---|
| 101 | irgb = NINT( 41 + 20.* LOG10( zchl ) + rtrn ) |
---|
| 102 | ! |
---|
| 103 | zekb(ji,jj,jk) = xkrgb(1,irgb) * fse3t(ji,jj,jk) |
---|
| 104 | zekg(ji,jj,jk) = xkrgb(2,irgb) * fse3t(ji,jj,jk) |
---|
| 105 | zekr(ji,jj,jk) = xkrgb(3,irgb) * fse3t(ji,jj,jk) |
---|
[935] | 106 | END DO |
---|
| 107 | END DO |
---|
| 108 | END DO |
---|
| 109 | |
---|
[1445] | 110 | !!gm Potential BUG must discuss with Olivier about this implementation.... |
---|
| 111 | !!gm the questions are : - PAR at T-point or mean PAR over T-level.... |
---|
| 112 | !!gm - shallow water: no penetration of light through the bottom.... |
---|
[935] | 113 | |
---|
| 114 | |
---|
[1445] | 115 | ! !* Photosynthetically Available Radiation (PAR) |
---|
| 116 | ! ! -------------------------------------- |
---|
[935] | 117 | !CDIR NOVERRCHK |
---|
[1445] | 118 | DO jj = 1, jpj |
---|
[935] | 119 | !CDIR NOVERRCHK |
---|
[1445] | 120 | DO ji = 1, jpi |
---|
| 121 | zc1 = parlux * qsr(ji,jj) * EXP( -0.5 * zekb(ji,jj,1) ) |
---|
| 122 | zc2 = parlux * qsr(ji,jj) * EXP( -0.5 * zekg(ji,jj,1) ) |
---|
| 123 | zc3 = parlux * qsr(ji,jj) * EXP( -0.5 * zekr(ji,jj,1) ) |
---|
| 124 | ze1 (ji,jj,1) = zc1 |
---|
| 125 | ze2 (ji,jj,1) = zc2 |
---|
| 126 | ze3 (ji,jj,1) = zc3 |
---|
| 127 | etot (ji,jj,1) = ( zc1 + zc2 + zc3 ) |
---|
| 128 | enano(ji,jj,1) = ( 2.1 * zc1 + 0.42 * zc2 + 0.4 * zc3 ) |
---|
| 129 | ediat(ji,jj,1) = ( 1.6 * zc1 + 0.69 * zc2 + 0.7 * zc3 ) |
---|
[935] | 130 | END DO |
---|
| 131 | END DO |
---|
| 132 | |
---|
[1445] | 133 | |
---|
| 134 | DO jk = 2, nksrp |
---|
[935] | 135 | !CDIR NOVERRCHK |
---|
| 136 | DO jj = 1, jpj |
---|
| 137 | !CDIR NOVERRCHK |
---|
| 138 | DO ji = 1, jpi |
---|
[1445] | 139 | zc1 = ze1(ji,jj,jk-1) * EXP( -0.5 * ( zekb(ji,jj,jk-1) + zekb(ji,jj,jk) ) ) |
---|
| 140 | zc2 = ze2(ji,jj,jk-1) * EXP( -0.5 * ( zekg(ji,jj,jk-1) + zekg(ji,jj,jk) ) ) |
---|
| 141 | zc3 = ze3(ji,jj,jk-1) * EXP( -0.5 * ( zekr(ji,jj,jk-1) + zekr(ji,jj,jk) ) ) |
---|
| 142 | ze1 (ji,jj,jk) = zc1 |
---|
| 143 | ze2 (ji,jj,jk) = zc2 |
---|
| 144 | ze3 (ji,jj,jk) = zc3 |
---|
| 145 | etot (ji,jj,jk) = ( zc1 + zc2 + zc3 ) |
---|
| 146 | enano(ji,jj,jk) = ( 2.1 * zc1 + 0.42 * zc2 + 0.4 * zc3 ) |
---|
| 147 | ediat(ji,jj,jk) = ( 1.6 * zc1 + 0.69 * zc2 + 0.7 * zc3 ) |
---|
[935] | 148 | END DO |
---|
| 149 | END DO |
---|
[1445] | 150 | END DO |
---|
[935] | 151 | |
---|
[1445] | 152 | IF( ln_qsr_bio ) THEN !* heat flux accros w-level (used in the dynamics) |
---|
| 153 | ! ! ------------------------ |
---|
| 154 | zxsi0r = 1.e0 / rn_si0 |
---|
| 155 | ! |
---|
| 156 | ze0 (:,:,1) = rn_abs * qsr(:,:) |
---|
| 157 | ze1 (:,:,1) = parlux * qsr(:,:) ! surface value : separation in R-G-B + near surface |
---|
| 158 | ze2 (:,:,1) = parlux * qsr(:,:) |
---|
| 159 | ze3 (:,:,1) = parlux * qsr(:,:) |
---|
| 160 | etot3(:,:,1) = qsr(:,:) * tmask(:,:,1) |
---|
| 161 | ! |
---|
| 162 | DO jk = 2, nksrp+1 |
---|
[935] | 163 | !CDIR NOVERRCHK |
---|
| 164 | DO jj = 1, jpj |
---|
| 165 | !CDIR NOVERRCHK |
---|
| 166 | DO ji = 1, jpi |
---|
[1445] | 167 | zc0 = ze0(ji,jj,jk-1) * EXP( -fse3t(ji,jj,jk-1) * zxsi0r ) |
---|
| 168 | zc1 = ze1(ji,jj,jk-1) * EXP( -zekb(ji,jj,jk-1 ) ) |
---|
| 169 | zc2 = ze2(ji,jj,jk-1) * EXP( -zekg(ji,jj,jk-1 ) ) |
---|
| 170 | zc3 = ze3(ji,jj,jk-1) * EXP( -zekr(ji,jj,jk-1 ) ) |
---|
| 171 | ze0(ji,jj,jk) = zc0 |
---|
| 172 | ze1(ji,jj,jk) = zc1 |
---|
| 173 | ze2(ji,jj,jk) = zc2 |
---|
| 174 | ze3(ji,jj,jk) = zc3 |
---|
| 175 | etot3(ji,jj,jk) = ( zc0 + zc1 + zc2 + zc3 ) * tmask(ji,jj,jk) |
---|
| 176 | END DO |
---|
| 177 | ! |
---|
[935] | 178 | END DO |
---|
[1445] | 179 | ! |
---|
| 180 | END DO |
---|
| 181 | ! |
---|
[935] | 182 | ENDIF |
---|
| 183 | |
---|
[1445] | 184 | ! !* Euphotic depth and level |
---|
| 185 | neln(:,:) = 1 ! ------------------------ |
---|
[1180] | 186 | heup(:,:) = 300. |
---|
[935] | 187 | |
---|
[1445] | 188 | DO jk = 2, nksrp |
---|
[935] | 189 | DO jj = 1, jpj |
---|
[1180] | 190 | DO ji = 1, jpi |
---|
| 191 | IF( etot(ji,jj,jk) >= 0.0043 * qsr(ji,jj) ) THEN |
---|
[1445] | 192 | neln(ji,jj) = jk+1 ! Euphotic level : 1rst T-level strictly below Euphotic layer |
---|
| 193 | ! ! nb: ensure the compatibility with nmld_trc definition in trd_mld_trc_zint |
---|
| 194 | heup(ji,jj) = fsdepw(ji,jj,jk+1) ! Euphotic layer depth |
---|
| 195 | ENDIF |
---|
| 196 | END DO |
---|
[1180] | 197 | END DO |
---|
[1445] | 198 | END DO |
---|
[1180] | 199 | |
---|
[1445] | 200 | heup(:,:) = MIN( 300., heup(:,:) ) |
---|
[935] | 201 | |
---|
[1445] | 202 | ! !* mean light over the mixed layer |
---|
| 203 | zdepmoy(:,:) = 0.e0 ! ------------------------------- |
---|
[935] | 204 | zetmp (:,:) = 0.e0 |
---|
| 205 | emoy (:,:,:) = 0.e0 |
---|
| 206 | |
---|
[1445] | 207 | DO jk = 1, nksrp |
---|
| 208 | !CDIR NOVERRCHK |
---|
[935] | 209 | DO jj = 1, jpj |
---|
[1445] | 210 | !CDIR NOVERRCHK |
---|
[935] | 211 | DO ji = 1, jpi |
---|
| 212 | IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) THEN |
---|
| 213 | zetmp (ji,jj) = zetmp (ji,jj) + etot(ji,jj,jk) * fse3t(ji,jj,jk) |
---|
| 214 | zdepmoy(ji,jj) = zdepmoy(ji,jj) + fse3t(ji,jj,jk) |
---|
| 215 | ENDIF |
---|
| 216 | END DO |
---|
| 217 | END DO |
---|
| 218 | END DO |
---|
[1445] | 219 | ! |
---|
[935] | 220 | emoy(:,:,:) = etot(:,:,:) |
---|
[1445] | 221 | ! |
---|
| 222 | DO jk = 1, nksrp |
---|
| 223 | !CDIR NOVERRCHK |
---|
[935] | 224 | DO jj = 1, jpj |
---|
[1445] | 225 | !CDIR NOVERRCHK |
---|
[935] | 226 | DO ji = 1, jpi |
---|
[1445] | 227 | IF( fsdepw(ji,jj,jk+1) <= hmld(ji,jj) ) & |
---|
| 228 | & emoy(ji,jj,jk) = zetmp(ji,jj) / ( zdepmoy(ji,jj) + rtrn ) |
---|
[935] | 229 | END DO |
---|
| 230 | END DO |
---|
| 231 | END DO |
---|
| 232 | |
---|
[1457] | 233 | #if defined key_trc_diaadd |
---|
| 234 | # if ! defined key_iomput |
---|
| 235 | ! save for outputs |
---|
| 236 | trc2d(:,:, jp_pcs0_2d + 10) = heup(:,: ) * tmask(:,:,1) |
---|
| 237 | trc3d(:,:,:,jp_pcs0_3d + 3) = etot(:,:,:) * tmask(:,:,:) |
---|
| 238 | # else |
---|
| 239 | ! write diagnostics |
---|
| 240 | zw2d(:,: ) = heup(:,: ) * tmask(:,:,1) |
---|
| 241 | zw3d(:,:,:) = etot(:,:,:) * tmask(:,:,:) |
---|
[1678] | 242 | IF( jnt == nrdttrc ) CALL iom_put( "Heup", zw2d ) |
---|
[1457] | 243 | IF( jnt == nrdttrc ) CALL iom_put( "PAR" , zw3d ) |
---|
[935] | 244 | # endif |
---|
[1457] | 245 | #endif |
---|
[935] | 246 | ! |
---|
| 247 | END SUBROUTINE p4z_opt |
---|
| 248 | |
---|
| 249 | #else |
---|
[1445] | 250 | !!---------------------------------------------------------------------- |
---|
[935] | 251 | !! Dummy module : No PISCES bio-model |
---|
[1445] | 252 | !!---------------------------------------------------------------------- |
---|
[935] | 253 | CONTAINS |
---|
| 254 | SUBROUTINE p4z_opt ! Empty routine |
---|
| 255 | END SUBROUTINE p4z_opt |
---|
| 256 | #endif |
---|
| 257 | |
---|
| 258 | !!====================================================================== |
---|
| 259 | END MODULE p4zopt |
---|