| 1 | SUBROUTINE SFLUXI(PLEV,TLEV,DTAUI,TAUCUMI,UBARI,RSFI,WNOI,DWNI, |
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| 2 | * COSBI,WBARI,GWEIGHT,NFLUXTOPI,NFLUXTOPI_nu, |
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| 3 | * FMNETI,fluxupi,fluxdni,fluxupi_nu, |
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| 4 | * FZEROI,TAUGSURF) |
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| 5 | |
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| 6 | use radinc_h |
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| 7 | use radcommon_h, only: planckir, tlimit,sigma |
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| 8 | use comcstfi_mod, only: pi |
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| 9 | |
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| 10 | implicit none |
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| 11 | |
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| 12 | integer NLEVRAD, L, NW, NG, NTS, NTT |
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| 13 | |
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| 14 | real*8 TLEV(L_LEVELS), PLEV(L_LEVELS) |
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| 15 | real*8 TAUCUMI(L_LEVELS,L_NSPECTI,L_NGAUSS) |
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| 16 | real*8 FMNETI(L_NLAYRAD) |
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| 17 | real*8 WNOI(L_NSPECTI), DWNI(L_NSPECTI) |
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| 18 | real*8 DTAUI(L_NLAYRAD,L_NSPECTI,L_NGAUSS) |
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| 19 | real*8 FMUPI(L_NLEVRAD), FMDI(L_NLEVRAD) |
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| 20 | real*8 COSBI(L_NLAYRAD,L_NSPECTI,L_NGAUSS) |
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| 21 | real*8 WBARI(L_NLAYRAD,L_NSPECTI,L_NGAUSS) |
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| 22 | real*8 GWEIGHT(L_NGAUSS), NFLUXTOPI |
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| 23 | real*8 NFLUXTOPI_nu(L_NSPECTI) |
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| 24 | real*8 fluxupi_nu(L_NLAYRAD,L_NSPECTI) |
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| 25 | real*8 FTOPUP |
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| 26 | |
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| 27 | real*8 UBARI, RSFI, TSURF, BSURF, TTOP, BTOP, TAUTOP |
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| 28 | real*8 PLANCK, PLTOP |
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| 29 | real*8 fluxupi(L_NLAYRAD), fluxdni(L_NLAYRAD) |
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| 30 | real*8 FZEROI(L_NSPECTI) |
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| 31 | real*8 taugsurf(L_NSPECTI,L_NGAUSS-1), fzero |
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| 32 | |
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| 33 | real*8 fup_tmp(L_NSPECTI),fdn_tmp(L_NSPECTI) |
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| 34 | real*8 PLANCKSUM,PLANCKREF |
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| 35 | |
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| 36 | |
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| 37 | C======================================================================C |
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| 38 | |
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| 39 | NLEVRAD = L_NLEVRAD |
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| 40 | |
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| 41 | |
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| 42 | C ZERO THE NET FLUXES |
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| 43 | |
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| 44 | NFLUXTOPI = 0.0D0 |
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| 45 | |
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| 46 | DO NW=1,L_NSPECTI |
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| 47 | NFLUXTOPI_nu(NW) = 0.0D0 |
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| 48 | DO L=1,L_NLAYRAD |
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| 49 | FLUXUPI_nu(L,NW) = 0.0D0 |
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| 50 | |
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| 51 | fup_tmp(nw)=0.0D0 |
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| 52 | fdn_tmp(nw)=0.0D0 |
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| 53 | |
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| 54 | END DO |
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| 55 | END DO |
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| 56 | |
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| 57 | DO L=1,L_NLAYRAD |
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| 58 | FMNETI(L) = 0.0D0 |
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| 59 | FLUXUPI(L) = 0.0D0 |
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| 60 | FLUXDNI(L) = 0.0D0 |
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| 61 | END DO |
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| 62 | |
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| 63 | C WE NOW ENTER A MAJOR LOOP OVER SPECTRAL INTERVALS IN THE INFRARED |
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| 64 | C TO CALCULATE THE NET FLUX IN EACH SPECTRAL INTERVAL |
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| 65 | |
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| 66 | TTOP = TLEV(2) ! JL12 why not (1) ??? |
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| 67 | TSURF = TLEV(L_LEVELS) |
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| 68 | |
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| 69 | NTS = int(TSURF*NTfac)-NTstar+1 |
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| 70 | NTT = int(TTOP *NTfac)-NTstar+1 |
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| 71 | |
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| 72 | !JL12 corrects the surface planck function so that its integral is equal to sigma Tsurf^4 |
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| 73 | !JL12 this ensure that no flux is lost due to: |
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| 74 | !JL12 -truncation of the planck function at high/low wavenumber |
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| 75 | !JL12 -numerical error during first spectral integration |
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| 76 | !JL12 -discrepancy between Tsurf and NTS/NTfac |
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| 77 | PLANCKSUM=0.d0 |
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| 78 | PLANCKREF=TSURF*TSURF |
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| 79 | PLANCKREF=sigma*PLANCKREF*PLANCKREF |
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| 80 | DO NW=1,L_NSPECTI |
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| 81 | PLANCKSUM=PLANCKSUM+PLANCKIR(NW,NTS)*DWNI(NW) |
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| 82 | ENDDO |
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| 83 | PLANCKSUM=PLANCKREF/(PLANCKSUM*Pi) |
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| 84 | !JL12 |
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| 85 | |
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| 86 | DO 501 NW=1,L_NSPECTI |
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| 87 | |
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| 88 | C SURFACE EMISSIONS - INDEPENDENT OF GAUSS POINTS |
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| 89 | BSURF = (1.-RSFI)*PLANCKIR(NW,NTS)*PLANCKSUM !JL12 plancksum see above |
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| 90 | PLTOP = PLANCKIR(NW,NTT) |
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| 91 | |
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| 92 | C If FZEROI(NW) = 1, then the k-coefficients are zero - skip to the |
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| 93 | C special Gauss point at the end. |
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| 94 | |
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| 95 | FZERO = FZEROI(NW) |
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| 96 | IF(FZERO.ge.0.99) goto 40 |
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| 97 | |
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| 98 | DO NG=1,L_NGAUSS-1 |
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| 99 | |
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| 100 | if(TAUGSURF(NW,NG).lt. TLIMIT) then |
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| 101 | fzero = fzero + (1.0D0-FZEROI(NW))*GWEIGHT(NG) |
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| 102 | goto 30 |
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| 103 | end if |
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| 104 | |
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| 105 | C SET UP THE UPPER AND LOWER BOUNDARY CONDITIONS ON THE IR |
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| 106 | C CALCULATE THE DOWNWELLING RADIATION AT THE TOP OF THE MODEL |
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| 107 | C OR THE TOP LAYER WILL COOL TO SPACE UNPHYSICALLY |
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| 108 | |
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| 109 | ! TAUTOP = DTAUI(1,NW,NG)*PLEV(2)/(PLEV(4)-PLEV(2)) |
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| 110 | TAUTOP = TAUCUMI(2,NW,NG) |
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| 111 | BTOP = (1.0D0-EXP(-TAUTOP/UBARI))*PLTOP |
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| 112 | |
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| 113 | C WE CAN NOW SOLVE FOR THE COEFFICIENTS OF THE TWO STREAM |
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| 114 | C CALL A SUBROUTINE THAT SOLVES FOR THE FLUX TERMS |
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| 115 | C WITHIN EACH INTERVAL AT THE MIDPOINT WAVENUMBER |
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| 116 | |
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| 117 | CALL GFLUXI(NLEVRAD,TLEV,NW,DWNI(NW),DTAUI(1,NW,NG), |
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| 118 | * TAUCUMI(1,NW,NG), |
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| 119 | * WBARI(1,NW,NG),COSBI(1,NW,NG),UBARI,RSFI,BTOP, |
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| 120 | * BSURF,FTOPUP,FMUPI,FMDI) |
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| 121 | |
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| 122 | |
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| 123 | |
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| 124 | C NOW CALCULATE THE CUMULATIVE IR NET FLUX |
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| 125 | |
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| 126 | NFLUXTOPI = NFLUXTOPI+FTOPUP*DWNI(NW)*GWEIGHT(NG)* |
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| 127 | * (1.0D0-FZEROI(NW)) |
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| 128 | |
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| 129 | c and same thing by spectral band... (RDW) |
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| 130 | NFLUXTOPI_nu(NW) = NFLUXTOPI_nu(NW) |
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| 131 | * +FTOPUP*DWNI(NW)*GWEIGHT(NG)*(1.0D0-FZEROI(NW)) |
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| 132 | |
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| 133 | |
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| 134 | DO L=1,L_NLEVRAD-1 |
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| 135 | |
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| 136 | C CORRECT FOR THE WAVENUMBER INTERVALS |
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| 137 | |
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| 138 | FMNETI(L) = FMNETI(L)+(FMUPI(L)-FMDI(L))*DWNI(NW)* |
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| 139 | * GWEIGHT(NG)*(1.0D0-FZEROI(NW)) |
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| 140 | FLUXUPI(L) = FLUXUPI(L) + FMUPI(L)*DWNI(NW)*GWEIGHT(NG)* |
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| 141 | * (1.0D0-FZEROI(NW)) |
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| 142 | FLUXDNI(L) = FLUXDNI(L) + FMDI(L)*DWNI(NW)*GWEIGHT(NG)* |
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| 143 | * (1.0D0-FZEROI(NW)) |
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| 144 | |
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| 145 | c and same thing by spectral band... (RW) |
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| 146 | FLUXUPI_nu(L,NW) = FLUXUPI_nu(L,NW) + |
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| 147 | * FMUPI(L)*DWNI(NW)*GWEIGHT(NG)*(1.0D0-FZEROI(NW)) |
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| 148 | |
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| 149 | END DO |
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| 150 | |
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| 151 | 30 CONTINUE |
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| 152 | |
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| 153 | END DO !End NGAUSS LOOP |
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| 154 | |
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| 155 | 40 CONTINUE |
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| 156 | |
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| 157 | C SPECIAL 17th Gauss point |
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| 158 | |
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| 159 | NG = L_NGAUSS |
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| 160 | |
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| 161 | ! TAUTOP = DTAUI(1,NW,NG)*PLEV(2)/(PLEV(4)-PLEV(2)) |
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| 162 | TAUTOP = TAUCUMI(2,NW,NG) |
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| 163 | BTOP = (1.0D0-EXP(-TAUTOP/UBARI))*PLTOP |
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| 164 | |
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| 165 | C WE CAN NOW SOLVE FOR THE COEFFICIENTS OF THE TWO STREAM |
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| 166 | C CALL A SUBROUTINE THAT SOLVES FOR THE FLUX TERMS |
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| 167 | C WITHIN EACH INTERVAL AT THE MIDPOINT WAVENUMBER |
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| 168 | |
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| 169 | |
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| 170 | CALL GFLUXI(NLEVRAD,TLEV,NW,DWNI(NW),DTAUI(1,NW,NG), |
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| 171 | * TAUCUMI(1,NW,NG), |
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| 172 | * WBARI(1,NW,NG),COSBI(1,NW,NG),UBARI,RSFI,BTOP, |
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| 173 | * BSURF,FTOPUP,FMUPI,FMDI) |
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| 174 | |
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| 175 | C NOW CALCULATE THE CUMULATIVE IR NET FLUX |
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| 176 | |
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| 177 | NFLUXTOPI = NFLUXTOPI+FTOPUP*DWNI(NW)*FZERO |
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| 178 | |
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| 179 | c and same thing by spectral band... (RW) |
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| 180 | NFLUXTOPI_nu(NW) = NFLUXTOPI_nu(NW) |
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| 181 | * +FTOPUP*DWNI(NW)*FZERO |
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| 182 | |
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| 183 | DO L=1,L_NLEVRAD-1 |
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| 184 | |
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| 185 | C CORRECT FOR THE WAVENUMBER INTERVALS |
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| 186 | |
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| 187 | FMNETI(L) = FMNETI(L)+(FMUPI(L)-FMDI(L))*DWNI(NW)*FZERO |
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| 188 | FLUXUPI(L) = FLUXUPI(L) + FMUPI(L)*DWNI(NW)*FZERO |
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| 189 | FLUXDNI(L) = FLUXDNI(L) + FMDI(L)*DWNI(NW)*FZERO |
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| 190 | |
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| 191 | c and same thing by spectral band... (RW) |
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| 192 | FLUXUPI_nu(L,NW) = FLUXUPI_nu(L,NW) + FMUPI(L)*DWNI(NW)*FZERO |
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| 193 | |
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| 194 | END DO |
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| 195 | |
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| 196 | 501 CONTINUE !End Spectral Interval LOOP |
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| 197 | |
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| 198 | C *** END OF MAJOR SPECTRAL INTERVAL LOOP IN THE INFRARED**** |
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| 199 | |
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| 200 | RETURN |
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| 201 | END |
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