[2032] | 1 | MODULE optcv_mod |
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| 2 | |
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| 3 | IMPLICIT NONE |
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| 4 | |
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| 5 | CONTAINS |
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| 6 | |
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[716] | 7 | SUBROUTINE OPTCV(DTAUV,TAUV,TAUCUMV,PLEV, & |
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| 8 | QXVAER,QSVAER,GVAER,WBARV,COSBV, & |
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| 9 | TAURAY,TAUAERO,TMID,PMID,TAUGSURF,QVAR,MUVAR) |
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[253] | 10 | |
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[2032] | 11 | use radinc_h, only: L_NLAYRAD, L_NLEVRAD, L_LEVELS, L_NSPECTV, L_NGAUSS, L_REFVAR, NAERKIND |
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[2133] | 12 | use radcommon_h, only: gasv, tlimit, wrefVAR, Cmk, tgasref, pfgasref,wnov,scalep,indv,glat_ig |
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[2032] | 13 | use gases_h, only: gfrac, ngasmx, igas_H2, igas_H2O, igas_He, igas_N2 |
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[1384] | 14 | use comcstfi_mod, only: g, r, mugaz |
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[2520] | 15 | use callkeys_mod, only: kastprof,continuum,graybody,callgasvis |
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[2543] | 16 | use recombin_corrk_mod, only: corrk_recombin, gasv_recomb |
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[253] | 17 | |
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[716] | 18 | implicit none |
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[253] | 19 | |
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[716] | 20 | !================================================================== |
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| 21 | ! |
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| 22 | ! Purpose |
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| 23 | ! ------- |
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| 24 | ! Calculates shortwave optical constants at each level. |
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| 25 | ! |
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| 26 | ! Authors |
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| 27 | ! ------- |
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| 28 | ! Adapted from the NASA Ames code by R. Wordsworth (2009) |
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| 29 | ! |
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| 30 | !================================================================== |
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| 31 | ! |
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| 32 | ! THIS SUBROUTINE SETS THE OPTICAL CONSTANTS IN THE VISUAL |
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[1715] | 33 | ! IT CALCULATES FOR EACH LAYER, FOR EACH SPECTRAL INTERVAL IN THE VISUAL |
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[716] | 34 | ! LAYER: WBAR, DTAU, COSBAR |
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| 35 | ! LEVEL: TAU |
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| 36 | ! |
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| 37 | ! TAUV(L,NW,NG) is the cumulative optical depth at the top of radiation code |
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| 38 | ! layer L. NW is spectral wavelength interval, ng the Gauss point index. |
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| 39 | ! |
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| 40 | ! TLEV(L) - Temperature at the layer boundary |
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| 41 | ! PLEV(L) - Pressure at the layer boundary (i.e. level) |
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| 42 | ! GASV(NT,NPS,NW,NG) - Visible k-coefficients |
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| 43 | ! |
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| 44 | !------------------------------------------------------------------- |
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[253] | 45 | |
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| 46 | |
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[716] | 47 | real*8 DTAUV(L_NLAYRAD,L_NSPECTV,L_NGAUSS) |
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[1715] | 48 | real*8 DTAUKV(L_LEVELS,L_NSPECTV,L_NGAUSS) |
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[716] | 49 | real*8 TAUV(L_NLEVRAD,L_NSPECTV,L_NGAUSS) |
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| 50 | real*8 TAUCUMV(L_LEVELS,L_NSPECTV,L_NGAUSS) |
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| 51 | real*8 PLEV(L_LEVELS) |
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| 52 | real*8 TMID(L_LEVELS), PMID(L_LEVELS) |
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| 53 | real*8 COSBV(L_NLAYRAD,L_NSPECTV,L_NGAUSS) |
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| 54 | real*8 WBARV(L_NLAYRAD,L_NSPECTV,L_NGAUSS) |
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[253] | 55 | |
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[716] | 56 | ! for aerosols |
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[1715] | 57 | real*8 QXVAER(L_LEVELS,L_NSPECTV,NAERKIND) |
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| 58 | real*8 QSVAER(L_LEVELS,L_NSPECTV,NAERKIND) |
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| 59 | real*8 GVAER(L_LEVELS,L_NSPECTV,NAERKIND) |
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| 60 | real*8 TAUAERO(L_LEVELS,NAERKIND) |
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| 61 | real*8 TAUAEROLK(L_LEVELS,L_NSPECTV,NAERKIND) |
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[873] | 62 | real*8 TAEROS(L_LEVELS,L_NSPECTV,NAERKIND) |
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[253] | 63 | |
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[873] | 64 | integer L, NW, NG, K, LK, IAER |
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[716] | 65 | integer MT(L_LEVELS), MP(L_LEVELS), NP(L_LEVELS) |
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| 66 | real*8 ANS, TAUGAS |
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[873] | 67 | real*8 TAURAY(L_NSPECTV) |
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[716] | 68 | real*8 TRAY(L_LEVELS,L_NSPECTV) |
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| 69 | real*8 DPR(L_LEVELS), U(L_LEVELS) |
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| 70 | real*8 LCOEF(4), LKCOEF(L_LEVELS,4) |
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[253] | 71 | |
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[873] | 72 | real*8 taugsurf(L_NSPECTV,L_NGAUSS-1) |
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[918] | 73 | real*8 DCONT,DAERO |
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[1715] | 74 | real*8 DRAYAER |
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[873] | 75 | double precision wn_cont, p_cont, p_air, T_cont, dtemp, dtempc |
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| 76 | double precision p_cross |
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[253] | 77 | |
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[716] | 78 | ! variable species mixing ratio variables |
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[873] | 79 | real*8 QVAR(L_LEVELS), WRATIO(L_LEVELS), MUVAR(L_LEVELS) |
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| 80 | real*8 KCOEF(4) |
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[716] | 81 | integer NVAR(L_LEVELS) |
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[1725] | 82 | |
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| 83 | ! temporary variables to reduce memory access time to gasv |
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| 84 | real*8 tmpk(2,2) |
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| 85 | real*8 tmpkvar(2,2,2) |
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[253] | 86 | |
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[716] | 87 | ! temporary variables for multiple aerosol calculation |
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[918] | 88 | real*8 atemp(L_NLAYRAD,L_NSPECTV) |
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| 89 | real*8 btemp(L_NLAYRAD,L_NSPECTV) |
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| 90 | real*8 ctemp(L_NLAYRAD,L_NSPECTV) |
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[253] | 91 | |
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[716] | 92 | ! variables for k in units m^-1 |
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[873] | 93 | real*8 dz(L_LEVELS) |
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[253] | 94 | |
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[2131] | 95 | |
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[716] | 96 | integer igas, jgas |
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[253] | 97 | |
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[873] | 98 | integer interm |
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| 99 | |
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| 100 | !! AS: to save time in computing continuum (see bilinearbig) |
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| 101 | IF (.not.ALLOCATED(indv)) THEN |
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[878] | 102 | ALLOCATE(indv(L_NSPECTV,ngasmx,ngasmx)) |
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[873] | 103 | indv = -9999 ! this initial value means "to be calculated" |
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| 104 | ENDIF |
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| 105 | |
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[716] | 106 | !======================================================================= |
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| 107 | ! Determine the total gas opacity throughout the column, for each |
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| 108 | ! spectral interval, NW, and each Gauss point, NG. |
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| 109 | ! Calculate the continuum opacities, i.e., those that do not depend on |
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| 110 | ! NG, the Gauss index. |
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[253] | 111 | |
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[716] | 112 | taugsurf(:,:) = 0.0 |
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| 113 | dpr(:) = 0.0 |
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| 114 | lkcoef(:,:) = 0.0 |
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[253] | 115 | |
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[716] | 116 | do K=2,L_LEVELS |
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| 117 | DPR(k) = PLEV(K)-PLEV(K-1) |
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[253] | 118 | |
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[716] | 119 | ! if we have continuum opacities, we need dz |
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| 120 | if(kastprof)then |
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[1016] | 121 | dz(k) = dpr(k)*(1000.0d0*8.3145d0/muvar(k))*TMID(K)/(g*PMID(K)) |
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| 122 | U(k) = Cmk*DPR(k)*mugaz/muvar(k) |
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[716] | 123 | else |
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[1194] | 124 | dz(k) = dpr(k)*R*TMID(K)/(glat_ig*PMID(K))*mugaz/muvar(k) |
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[1016] | 125 | U(k) = Cmk*DPR(k)*mugaz/muvar(k) ! only Cmk line in optci.F |
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| 126 | !JL13 the mugaz/muvar factor takes into account water meanmolecular weight if water is present |
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[716] | 127 | endif |
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[253] | 128 | |
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[716] | 129 | call tpindex(PMID(K),TMID(K),QVAR(K),pfgasref,tgasref,WREFVAR, & |
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| 130 | LCOEF,MT(K),MP(K),NVAR(K),WRATIO(K)) |
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[253] | 131 | |
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[716] | 132 | do LK=1,4 |
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| 133 | LKCOEF(K,LK) = LCOEF(LK) |
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| 134 | end do |
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[918] | 135 | end do ! levels |
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[253] | 136 | |
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[1715] | 137 | ! Spectral dependance of aerosol absorption |
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[1987] | 138 | !JL18 It seems to be good to have aerosols in the first "radiative layer" of the gcm in the IR |
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| 139 | ! but visible does not handle very well diffusion in first layer. |
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| 140 | ! The tauaero and tauray are thus set to 0 (a small value for rayleigh because the code crashes otherwise) |
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| 141 | ! in the 4 first semilayers in optcv, but not optci. |
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| 142 | ! This solves random variations of the sw heating at the model top. |
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[918] | 143 | do iaer=1,naerkind |
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| 144 | do NW=1,L_NSPECTV |
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[1987] | 145 | TAEROS(1:4,NW,IAER)=0.d0 |
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| 146 | do K=5,L_LEVELS |
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[873] | 147 | TAEROS(K,NW,IAER) = TAUAERO(K,IAER) * QXVAER(K,NW,IAER) |
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[918] | 148 | end do ! levels |
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| 149 | end do |
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| 150 | end do |
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[1715] | 151 | |
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| 152 | ! Rayleigh scattering |
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[918] | 153 | do NW=1,L_NSPECTV |
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[1987] | 154 | TRAY(1:4,NW) = 1d-30 |
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| 155 | do K=5,L_LEVELS |
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[873] | 156 | TRAY(K,NW) = TAURAY(NW) * DPR(K) |
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[918] | 157 | end do ! levels |
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| 158 | end do |
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| 159 | |
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[716] | 160 | ! we ignore K=1... |
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| 161 | do K=2,L_LEVELS |
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[873] | 162 | |
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[716] | 163 | do NW=1,L_NSPECTV |
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[253] | 164 | |
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[1715] | 165 | DRAYAER = TRAY(K,NW) |
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| 166 | ! DRAYAER is Tau RAYleigh scattering, plus AERosol opacity |
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[716] | 167 | do iaer=1,naerkind |
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[1715] | 168 | DRAYAER = DRAYAER + TAEROS(K,NW,IAER) |
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[716] | 169 | end do |
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[253] | 170 | |
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[716] | 171 | DCONT = 0.0 ! continuum absorption |
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[253] | 172 | |
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[873] | 173 | if(continuum.and.(.not.graybody).and.callgasvis)then |
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[716] | 174 | ! include continua if necessary |
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| 175 | wn_cont = dble(wnov(nw)) |
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| 176 | T_cont = dble(TMID(k)) |
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| 177 | do igas=1,ngasmx |
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[305] | 178 | |
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[716] | 179 | if(gfrac(igas).eq.-1)then ! variable |
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| 180 | p_cont = dble(PMID(k)*scalep*QVAR(k)) ! qvar = mol/mol |
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| 181 | else |
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| 182 | p_cont = dble(PMID(k)*scalep*gfrac(igas)*(1.-QVAR(k))) |
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| 183 | endif |
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[305] | 184 | |
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[716] | 185 | dtemp=0.0 |
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| 186 | if(igas.eq.igas_N2)then |
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[253] | 187 | |
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[878] | 188 | interm = indv(nw,igas,igas) |
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| 189 | ! call interpolateN2N2(wn_cont,T_cont,p_cont,dtemp,.false.,interm) |
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| 190 | indv(nw,igas,igas) = interm |
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[716] | 191 | ! only goes to 500 cm^-1, so unless we're around a cold brown dwarf, this is irrelevant in the visible |
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[253] | 192 | |
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[716] | 193 | elseif(igas.eq.igas_H2)then |
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[253] | 194 | |
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[716] | 195 | ! first do self-induced absorption |
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[878] | 196 | interm = indv(nw,igas,igas) |
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[873] | 197 | call interpolateH2H2(wn_cont,T_cont,p_cont,dtemp,.false.,interm) |
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[878] | 198 | indv(nw,igas,igas) = interm |
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[253] | 199 | |
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[716] | 200 | ! then cross-interactions with other gases |
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| 201 | do jgas=1,ngasmx |
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| 202 | p_cross = dble(PMID(k)*scalep*gfrac(jgas)*(1.-QVAR(k))) |
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[873] | 203 | dtempc = 0.0 |
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| 204 | if(jgas.eq.igas_N2)then |
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[878] | 205 | interm = indv(nw,igas,jgas) |
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| 206 | call interpolateN2H2(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm) |
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| 207 | indv(nw,igas,jgas) = interm |
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[716] | 208 | ! should be irrelevant in the visible |
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| 209 | elseif(jgas.eq.igas_He)then |
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[878] | 210 | interm = indv(nw,igas,jgas) |
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[873] | 211 | call interpolateH2He(wn_cont,T_cont,p_cross,p_cont,dtempc,.false.,interm) |
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[878] | 212 | indv(nw,igas,jgas) = interm |
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[716] | 213 | endif |
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[873] | 214 | dtemp = dtemp + dtempc |
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[716] | 215 | enddo |
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[253] | 216 | |
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[2520] | 217 | elseif(igas.eq.igas_H2O.and.T_cont.gt.100.0)then |
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| 218 | ! Compute self and foreign (with air) continuum of H2O |
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[716] | 219 | p_air = dble(PMID(k)*scalep) - p_cont ! note assumes background is air! |
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[2520] | 220 | interm = indv(nw,igas,igas) |
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| 221 | call interpolateH2O_self_foreign(wn_cont,T_cont,p_cont,p_air,dtemp,.false.,interm) ! MTCKD v3.3 |
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| 222 | indv(nw,igas,igas) = interm |
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[253] | 223 | |
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[716] | 224 | endif |
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[253] | 225 | |
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[716] | 226 | DCONT = DCONT + dtemp |
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[253] | 227 | |
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[716] | 228 | enddo |
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[253] | 229 | |
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[873] | 230 | DCONT = DCONT*dz(k) |
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| 231 | |
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[716] | 232 | endif |
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[253] | 233 | |
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[873] | 234 | do ng=1,L_NGAUSS-1 |
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[305] | 235 | |
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[873] | 236 | ! Now compute TAUGAS |
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[253] | 237 | |
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[873] | 238 | ! Interpolate between water mixing ratios |
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| 239 | ! WRATIO = 0.0 if the requested water amount is equal to, or outside the |
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| 240 | ! the water data range |
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| 241 | |
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| 242 | if(L_REFVAR.eq.1)then ! added by RW for special no variable case |
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[1725] | 243 | |
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| 244 | ! JVO 2017 : added tmpk because the repeated calls to gasi/v increased dramatically |
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| 245 | ! the execution time of optci/v -> ~ factor 2 on the whole radiative |
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| 246 | ! transfer on the tested simulations ! |
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| 247 | |
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[2543] | 248 | IF (corrk_recombin) THEN ! Added by JVO |
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| 249 | tmpk = GASV_RECOMB(MT(K):MT(K)+1,MP(K):MP(K)+1,1,NW,NG) ! contains the mix of recombined species |
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| 250 | ELSE |
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| 251 | tmpk = GASV(MT(K):MT(K)+1,MP(K):MP(K)+1,1,NW,NG) |
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| 252 | ENDIF |
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[1725] | 253 | |
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| 254 | KCOEF(1) = tmpk(1,1) ! KCOEF(1) = GASV(MT(K),MP(K),1,NW,NG) |
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| 255 | KCOEF(2) = tmpk(1,2) ! KCOEF(2) = GASV(MT(K),MP(K)+1,1,NW,NG) |
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| 256 | KCOEF(3) = tmpk(2,2) ! KCOEF(3) = GASV(MT(K)+1,MP(K)+1,1,NW,NG) |
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| 257 | KCOEF(4) = tmpk(2,1) ! KCOEF(4) = GASV(MT(K)+1,MP(K),1,NW,NG) |
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| 258 | |
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[716] | 259 | else |
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[873] | 260 | |
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[2543] | 261 | IF (corrk_recombin) THEN |
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| 262 | tmpkvar = GASV_RECOMB(MT(K):MT(K)+1,MP(K):MP(K)+1,NVAR(K):NVAR(K)+1,NW,NG) |
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| 263 | ELSE |
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| 264 | tmpkvar = GASV(MT(K):MT(K)+1,MP(K):MP(K)+1,NVAR(K):NVAR(K)+1,NW,NG) |
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| 265 | ENDIF |
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[253] | 266 | |
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[1725] | 267 | KCOEF(1) = tmpkvar(1,1,1) + WRATIO(K) * & |
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| 268 | ( tmpkvar(1,1,2)-tmpkvar(1,1,1) ) |
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[253] | 269 | |
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[1725] | 270 | KCOEF(2) = tmpkvar(1,2,1) + WRATIO(K) * & |
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| 271 | ( tmpkvar(1,2,2)-tmpkvar(1,2,1) ) |
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[253] | 272 | |
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[1725] | 273 | KCOEF(3) = tmpkvar(2,2,1) + WRATIO(K) * & |
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| 274 | ( tmpkvar(2,2,2)-tmpkvar(2,2,1) ) |
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| 275 | |
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| 276 | KCOEF(4) = tmpkvar(2,1,1) + WRATIO(K) * & |
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| 277 | ( tmpkvar(2,1,2)-tmpkvar(2,1,1) ) |
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[873] | 278 | |
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[1725] | 279 | |
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[716] | 280 | endif |
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[253] | 281 | |
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[873] | 282 | ! Interpolate the gaseous k-coefficients to the requested T,P values |
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[253] | 283 | |
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[873] | 284 | ANS = LKCOEF(K,1)*KCOEF(1) + LKCOEF(K,2)*KCOEF(2) + & |
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[716] | 285 | LKCOEF(K,3)*KCOEF(3) + LKCOEF(K,4)*KCOEF(4) |
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[253] | 286 | |
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[873] | 287 | TAUGAS = U(k)*ANS |
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[253] | 288 | |
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[716] | 289 | TAUGSURF(NW,NG) = TAUGSURF(NW,NG) + TAUGAS + DCONT |
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[873] | 290 | DTAUKV(K,nw,ng) = TAUGAS & |
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[1715] | 291 | + DRAYAER & ! DRAYAER includes all scattering contributions |
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[873] | 292 | + DCONT ! For parameterized continuum aborption |
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[253] | 293 | |
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[716] | 294 | end do |
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[253] | 295 | |
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[873] | 296 | ! Now fill in the "clear" part of the spectrum (NG = L_NGAUSS), |
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| 297 | ! which holds continuum opacity only |
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[253] | 298 | |
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[873] | 299 | NG = L_NGAUSS |
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[1715] | 300 | DTAUKV(K,nw,ng) = DRAYAER + DCONT ! Scattering + parameterized continuum absorption |
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[253] | 301 | |
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[716] | 302 | end do |
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| 303 | end do |
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[253] | 304 | |
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| 305 | |
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[716] | 306 | !======================================================================= |
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| 307 | ! Now the full treatment for the layers, where besides the opacity |
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| 308 | ! we need to calculate the scattering albedo and asymmetry factors |
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[253] | 309 | |
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[1987] | 310 | !JL18 It seems to be good to have aerosols in the first "radiative layer" of the gcm in the IR |
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| 311 | ! but not in the visible |
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| 312 | ! The tauaero is thus set to 0 in the 4 first semilayers in optcv, but not optci. |
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| 313 | ! This solves random variations of the sw heating at the model top. |
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[873] | 314 | do iaer=1,naerkind |
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[918] | 315 | DO NW=1,L_NSPECTV |
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[1987] | 316 | TAUAEROLK(1:4,NW,IAER)=0.d0 |
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| 317 | DO K=5,L_LEVELS |
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[1715] | 318 | TAUAEROLK(K,NW,IAER) = TAUAERO(K,IAER) * QSVAER(K,NW,IAER) ! effect of scattering albedo |
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[918] | 319 | ENDDO |
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| 320 | ENDDO |
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[873] | 321 | end do |
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[253] | 322 | |
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[716] | 323 | DO NW=1,L_NSPECTV |
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[919] | 324 | DO L=1,L_NLAYRAD-1 |
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[918] | 325 | K = 2*L+1 |
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| 326 | atemp(L,NW) = SUM(GVAER(K,NW,1:naerkind) * TAUAEROLK(K,NW,1:naerkind))+SUM(GVAER(K+1,NW,1:naerkind) * TAUAEROLK(K+1,NW,1:naerkind)) |
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| 327 | btemp(L,NW) = SUM(TAUAEROLK(K,NW,1:naerkind)) + SUM(TAUAEROLK(K+1,NW,1:naerkind)) |
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[1715] | 328 | ctemp(L,NW) = btemp(L,NW) + 0.9999*(TRAY(K,NW) + TRAY(K+1,NW)) ! JVO 2017 : does this 0.999 is really meaningful ? |
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[918] | 329 | btemp(L,NW) = btemp(L,NW) + TRAY(K,NW) + TRAY(K+1,NW) |
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| 330 | COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW) |
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| 331 | END DO ! L vertical loop |
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[919] | 332 | |
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[1715] | 333 | ! Last level |
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| 334 | L = L_NLAYRAD |
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| 335 | K = 2*L+1 |
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| 336 | atemp(L,NW) = SUM(GVAER(K,NW,1:naerkind) * TAUAEROLK(K,NW,1:naerkind)) |
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[919] | 337 | btemp(L,NW) = SUM(TAUAEROLK(K,NW,1:naerkind)) |
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[1715] | 338 | ctemp(L,NW) = btemp(L,NW) + 0.9999*TRAY(K,NW) ! JVO 2017 : does this 0.999 is really meaningful ? |
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[919] | 339 | btemp(L,NW) = btemp(L,NW) + TRAY(K,NW) |
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| 340 | COSBV(L,NW,1:L_NGAUSS) = atemp(L,NW)/btemp(L,NW) |
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| 341 | |
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| 342 | |
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[918] | 343 | END DO ! NW spectral loop |
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| 344 | |
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| 345 | DO NG=1,L_NGAUSS |
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| 346 | DO NW=1,L_NSPECTV |
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[873] | 347 | DO L=1,L_NLAYRAD-1 |
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[253] | 348 | |
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[873] | 349 | K = 2*L+1 |
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| 350 | DTAUV(L,nw,ng) = DTAUKV(K,NW,NG) + DTAUKV(K+1,NW,NG) |
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[918] | 351 | WBARV(L,nw,ng) = ctemp(L,NW) / DTAUV(L,nw,ng) |
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[253] | 352 | |
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[873] | 353 | END DO ! L vertical loop |
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[253] | 354 | |
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[1715] | 355 | ! Last level |
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[253] | 356 | |
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[716] | 357 | L = L_NLAYRAD |
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| 358 | K = 2*L+1 |
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[919] | 359 | DTAUV(L,nw,ng) = DTAUKV(K,NW,NG) |
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| 360 | |
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| 361 | WBARV(L,NW,NG) = ctemp(L,NW) / DTAUV(L,NW,NG) |
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[1722] | 362 | |
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[918] | 363 | END DO ! NW spectral loop |
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| 364 | END DO ! NG Gauss loop |
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[716] | 365 | |
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| 366 | ! Total extinction optical depths |
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| 367 | |
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[918] | 368 | DO NG=1,L_NGAUSS ! full gauss loop |
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| 369 | DO NW=1,L_NSPECTV |
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[716] | 370 | TAUCUMV(1,NW,NG)=0.0D0 |
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| 371 | DO K=2,L_LEVELS |
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| 372 | TAUCUMV(K,NW,NG)=TAUCUMV(K-1,NW,NG)+DTAUKV(K,NW,NG) |
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| 373 | END DO |
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[1987] | 374 | |
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[2004] | 375 | DO L=1,L_NLAYRAD |
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[1987] | 376 | TAUV(L,NW,NG)=TAUCUMV(2*L,NW,NG) |
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| 377 | END DO |
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[2004] | 378 | TAUV(L,NW,NG)=TAUCUMV(2*L_NLAYRAD+1,NW,NG) |
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[918] | 379 | END DO |
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| 380 | END DO ! end full gauss loop |
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[716] | 381 | |
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| 382 | |
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[2131] | 383 | |
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| 384 | |
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[2032] | 385 | end subroutine optcv |
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[873] | 386 | |
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[2032] | 387 | END MODULE optcv_mod |
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