Changeset 1445 for trunk/NEMO/TOP_SRC/LOBSTER
- Timestamp:
- 2009-05-13T16:35:02+02:00 (15 years ago)
- File:
-
- 1 edited
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trunk/NEMO/TOP_SRC/LOBSTER/trcopt.F90 (modified) (4 diffs)
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trunk/NEMO/TOP_SRC/LOBSTER/trcopt.F90
r1176 r1445 8 8 !! - ! 1999-11 (C. Menkes, M.-A. Foujols) itabe initial 9 9 !! - ! 2000-02 (M.A. Foujols) change x**y par exp(y*log(x)) 10 !! 2.0 ! 2007-12 (C. Deltel, G. Madec) F90 10 !! NEMO 2.0 ! 2007-12 (C. Deltel, G. Madec) F90 11 !! 3.2 ! 2009-04 (C. Ethe, G. Madec) minor optimisation + style 11 12 !!---------------------------------------------------------------------- 12 13 #if defined key_lobster … … 45 46 !! ** Method : local par is computed in w layers using light propagation 46 47 !! mean par in t layers are computed by integration 48 !! 49 !!gm please remplace the '???' by true comments 50 !! ** Action : xpar ??? 51 !! neln ??? 52 !! xze ??? 47 53 !!--------------------------------------------------------------------- 48 54 INTEGER, INTENT( in ) :: kt ! index of the time stepping 49 INTEGER :: ji, jj, jk 50 REAL(wp) :: zpig ! total pigment 51 REAL(wp) :: zkr ! total absorption coefficient in red 52 REAL(wp) :: zkg ! total absorption coefficient in green 55 !! 56 INTEGER :: ji, jj, jk ! dummy loop indices 57 CHARACTER (len=25) :: charout ! temporary character 58 REAL(wp) :: zpig ! log of the total pigment 59 REAL(wp) :: zkr, zkg ! total absorption coefficient in red and green 60 REAL(wp) :: zcoef ! temporary scalar 53 61 REAL(wp), DIMENSION(jpi,jpj) :: zpar100 ! irradiance at euphotic layer depth 54 62 REAL(wp), DIMENSION(jpi,jpj) :: zpar0m ! irradiance just below the surface 55 63 REAL(wp), DIMENSION(jpi,jpj,jpk) :: zparr, zparg ! red and green compound of par 56 64 57 CHARACTER (len=25) :: charout58 65 !!--------------------------------------------------------------------- 59 66 60 67 IF( kt == nit000 ) THEN 61 68 IF(lwp) WRITE(numout,*) 62 IF(lwp) WRITE(numout,*) ' trc_opt : LOBSTER optic-model'63 IF(lwp) WRITE(numout,*) ' ~~~~~~~ '69 IF(lwp) WRITE(numout,*) ' trc_opt : LOBSTER optic-model' 70 IF(lwp) WRITE(numout,*) ' ~~~~~~~ ' 64 71 ENDIF 65 72 66 ! determination of surface irradiance 67 ! ----------------------------------- 68 zpar0m (:,:) = qsr (:,:) * 0.43 73 ! ! surface irradiance 74 zpar0m (:,:) = qsr (:,:) * 0.43 ! ------------------ 69 75 zpar100(:,:) = zpar0m(:,:) * 0.01 70 76 xpar (:,:,1) = zpar0m(:,:) 71 zparr (:,:,1) = 0.5 * zpar0m(:,:)72 zparg (:,:,1) = 0.5 * zpar0m(:,:)77 zparr (:,:,1) = zpar0m(:,:) * 0.5 78 zparg (:,:,1) = zpar0m(:,:) * 0.5 73 79 80 !!gm optimisation : introduce zcoef and LOG computed once for all 74 81 75 ! determination of xpar 76 ! --------------------- 77 78 DO jk = 2, jpk ! determination of local par in w levels 82 ! ! Photosynthetically Available Radiation (PAR) 83 zcoef = 12 * redf / rcchl / rpig ! -------------------------------------- 84 DO jk = 2, jpk ! local par at w-levels 79 85 DO jj = 1, jpj 80 86 DO ji = 1, jpi 81 zpig = MAX( TINY(0.), trn(ji,jj,jk-1,jpphy) ) * 12 * redf / rcchl / rpig 82 zkr = xkr0 + xkrp * EXP( xlr * LOG( zpig ) ) 83 zkg = xkg0 + xkgp * EXP( xlg * LOG( zpig ) ) 87 !!gm zpig = MAX( TINY(0.), trn(ji,jj,jk-1,jpphy) ) * zcoef 88 !!gm zkr = xkr0 + xkrp * EXP( xlr * LOG(zpig) ) 89 !!gm zkg = xkg0 + xkgp * EXP( xlg * LOG(zpig) ) 90 zpig = LOG( MAX( TINY(0.), trn(ji,jj,jk-1,jpphy) ) * zcoef ) 91 zkr = xkr0 + xkrp * EXP( xlr * zpig ) 92 zkg = xkg0 + xkgp * EXP( xlg * zpig ) 84 93 zparr(ji,jj,jk) = zparr(ji,jj,jk-1) * EXP( -zkr * fse3t(ji,jj,jk-1) ) 85 94 zparg(ji,jj,jk) = zparg(ji,jj,jk-1) * EXP( -zkg * fse3t(ji,jj,jk-1) ) … … 87 96 END DO 88 97 END DO 89 90 DO jk = 1, jpkm1 ! mean par in tlevels98 !!gm optimisation : suppress one division 99 DO jk = 1, jpkm1 ! mean par at t-levels 91 100 DO jj = 1, jpj 92 101 DO ji = 1, jpi 93 zpig = MAX( TINY(0.), trn(ji,jj,jk,jpphy) ) * 12 * redf / rcchl / rpig 94 zkr = xkr0 + xkrp * EXP( xlr * LOG( zpig ) ) 95 zkg = xkg0 + xkgp * EXP( xlg * LOG( zpig ) ) 96 zparr(ji,jj,jk) = zparr(ji,jj,jk) / zkr / fse3t(ji,jj,jk) * ( 1 - EXP( -zkr*fse3t(ji,jj,jk) ) ) 97 zparg(ji,jj,jk) = zparg(ji,jj,jk) / zkg / fse3t(ji,jj,jk) * ( 1 - EXP( -zkg*fse3t(ji,jj,jk) ) ) 102 zpig = LOG( MAX( TINY(0.), trn(ji,jj,jk,jpphy) ) * zcoef ) 103 zkr = xkr0 + xkrp * EXP( xlr * zpig ) 104 zkg = xkg0 + xkgp * EXP( xlg * zpig ) 105 !!gm zparr(ji,jj,jk) = zparr(ji,jj,jk) / zkr / fse3t(ji,jj,jk) * ( 1 - EXP( -zkr * fse3t(ji,jj,jk) ) ) 106 !!gm zparg(ji,jj,jk) = zparg(ji,jj,jk) / zkg / fse3t(ji,jj,jk) * ( 1 - EXP( -zkg * fse3t(ji,jj,jk) ) ) 107 zparr(ji,jj,jk) = zparr(ji,jj,jk) / ( zkr * fse3t(ji,jj,jk) ) * ( 1 - EXP( -zkr * fse3t(ji,jj,jk) ) ) 108 zparg(ji,jj,jk) = zparg(ji,jj,jk) / ( zkg * fse3t(ji,jj,jk) ) * ( 1 - EXP( -zkg * fse3t(ji,jj,jk) ) ) 98 109 xpar (ji,jj,jk) = MAX( zparr(ji,jj,jk) + zparg(ji,jj,jk), 1.e-15 ) 99 110 END DO … … 101 112 END DO 102 113 103 ! 3. Determination of euphotic layer depth 104 ! ---------------------------------------- 105 106 ! Euphotic layer bottom level 107 neln(:,:) = 1 ! initialisation of EL level 108 DO jk = 1, jpk 114 ! ! Euphotic layer 115 ! ! -------------- 116 neln(:,:) = 1 ! euphotic layer level 117 DO jk = 1, jpk ! (i.e. 1rst T-level strictly below EL bottom) 109 118 DO jj = 1, jpj 110 119 DO ji = 1, jpi 111 IF( xpar(ji,jj,jk) >= zpar100(ji,jj) ) neln(ji,jj) = jk +1 ! 1rst T-level strictly below EL bottom112 ! 113 ! 120 IF( xpar(ji,jj,jk) >= zpar100(ji,jj) ) neln(ji,jj) = jk + 1 121 ! ! nb. this is to ensure compatibility with 122 ! ! nmld_trc definition in trd_mld_trc_zint 114 123 END DO 115 124 END DO 116 ENDDO 117 118 ! Euphotic layer depth 125 END DO 126 ! ! Euphotic layer depth 119 127 DO jj = 1, jpj 120 128 DO ji = 1, jpi 121 xze(ji,jj) = fsdepw( ji, jj, neln(ji,jj) ) ! exact EL depth129 xze(ji,jj) = fsdepw(ji,jj,neln(ji,jj)) 122 130 END DO 123 END DO131 END DO 124 132 125 133 126 IF(ln_ctl) THEN! print mean trends (used for debugging)134 IF(ln_ctl) THEN ! print mean trends (used for debugging) 127 135 WRITE(charout, FMT="('opt')") 128 CALL prt_ctl_trc_info( charout)136 CALL prt_ctl_trc_info( charout ) 129 137 CALL prt_ctl_trc( tab4d=trn, mask=tmask, clinfo=ctrcnm ) 130 138 ENDIF 131 139 ! 132 140 END SUBROUTINE trc_opt 133 141
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