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SUBROUTINE SW1S ( KNU |
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S , PAER , flag_aer, tauae, pizae, cgae |
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S , PALBD , PALBP, PCG , PCLD , PCLEAR, PCLDSW |
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S , PDSIG , POMEGA, POZ , PRMU , PSEC , PTAU , PUD |
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S , PFD , PFU) |
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use dimens_m |
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use dimphy |
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use raddim |
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IMPLICIT none |
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C |
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C ------------------------------------------------------------------ |
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C PURPOSE. |
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C -------- |
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C |
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C THIS ROUTINE COMPUTES THE SHORTWAVE RADIATION FLUXES IN TWO |
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C SPECTRAL INTERVALS FOLLOWING FOUQUART AND BONNEL (1980). |
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C |
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C METHOD. |
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C ------- |
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C |
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C 1. COMPUTES UPWARD AND DOWNWARD FLUXES CORRESPONDING TO |
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C CONTINUUM SCATTERING |
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C 2. MULTIPLY BY OZONE TRANSMISSION FUNCTION |
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C |
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C REFERENCE. |
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C ---------- |
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C |
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C SEE RADIATION'S PART OF THE ECMWF RESEARCH DEPARTMENT |
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C DOCUMENTATION, AND FOUQUART AND BONNEL (1980) |
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C |
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C AUTHOR. |
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C ------- |
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C JEAN-JACQUES MORCRETTE *ECMWF* |
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C |
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C MODIFICATIONS. |
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C -------------- |
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C ORIGINAL : 89-07-14 |
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C 94-11-15 J.-J. MORCRETTE DIRECT/DIFFUSE ALBEDO |
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C ------------------------------------------------------------------ |
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C |
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C* ARGUMENTS: |
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C |
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INTEGER KNU |
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c-OB |
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real*8 flag_aer |
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real*8 tauae(kdlon,kflev,2) |
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real*8 pizae(kdlon,kflev,2) |
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real*8 cgae(kdlon,kflev,2) |
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REAL*8 PAER(KDLON,KFLEV,5) |
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REAL*8 PALBD(KDLON,2) |
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REAL*8 PALBP(KDLON,2) |
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REAL*8 PCG(KDLON,2,KFLEV) |
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REAL*8 PCLD(KDLON,KFLEV) |
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REAL*8 PCLDSW(KDLON,KFLEV) |
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REAL*8 PCLEAR(KDLON) |
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REAL*8 PDSIG(KDLON,KFLEV) |
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REAL*8 POMEGA(KDLON,2,KFLEV) |
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REAL*8 POZ(KDLON,KFLEV) |
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REAL*8 PRMU(KDLON) |
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REAL*8 PSEC(KDLON) |
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REAL*8 PTAU(KDLON,2,KFLEV) |
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REAL*8 PUD(KDLON,5,KFLEV+1) |
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C |
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REAL*8 PFD(KDLON,KFLEV+1) |
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REAL*8 PFU(KDLON,KFLEV+1) |
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C |
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C* LOCAL VARIABLES: |
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C |
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INTEGER IIND(4) |
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C |
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REAL*8 ZCGAZ(KDLON,KFLEV) |
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REAL*8 ZDIFF(KDLON) |
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REAL*8 ZDIRF(KDLON) |
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REAL*8 ZPIZAZ(KDLON,KFLEV) |
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REAL*8 ZRAYL(KDLON) |
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REAL*8 ZRAY1(KDLON,KFLEV+1) |
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REAL*8 ZRAY2(KDLON,KFLEV+1) |
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REAL*8 ZREFZ(KDLON,2,KFLEV+1) |
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REAL*8 ZRJ(KDLON,6,KFLEV+1) |
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REAL*8 ZRJ0(KDLON,6,KFLEV+1) |
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REAL*8 ZRK(KDLON,6,KFLEV+1) |
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REAL*8 ZRK0(KDLON,6,KFLEV+1) |
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REAL*8 ZRMUE(KDLON,KFLEV+1) |
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REAL*8 ZRMU0(KDLON,KFLEV+1) |
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REAL*8 ZR(KDLON,4) |
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REAL*8 ZTAUAZ(KDLON,KFLEV) |
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REAL*8 ZTRA1(KDLON,KFLEV+1) |
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REAL*8 ZTRA2(KDLON,KFLEV+1) |
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REAL*8 ZW(KDLON,4) |
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C |
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INTEGER jl, jk, k, jaj, ikm1, ikl |
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c |
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c Prescribed Data: |
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c |
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REAL*8 RSUN(2) |
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SAVE RSUN |
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REAL*8 RRAY(2,6) |
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SAVE RRAY |
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DATA RSUN(1) / 0.441676 / |
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DATA RSUN(2) / 0.558324 / |
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DATA (RRAY(1,K),K=1,6) / |
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S .428937E-01, .890743E+00,-.288555E+01, |
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S .522744E+01,-.469173E+01, .161645E+01/ |
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DATA (RRAY(2,K),K=1,6) / |
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S .697200E-02, .173297E-01,-.850903E-01, |
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S .248261E+00,-.302031E+00, .129662E+00/ |
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C ------------------------------------------------------------------ |
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C |
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C* 1. FIRST SPECTRAL INTERVAL (0.25-0.68 MICRON) |
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C ----------------------- ------------------ |
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C |
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100 CONTINUE |
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C |
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C |
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C* 1.1 OPTICAL THICKNESS FOR RAYLEIGH SCATTERING |
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C ----------------------------------------- |
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C |
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110 CONTINUE |
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C |
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DO 111 JL = 1, KDLON |
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ZRAYL(JL) = RRAY(KNU,1) + PRMU(JL) * (RRAY(KNU,2) + PRMU(JL) |
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S * (RRAY(KNU,3) + PRMU(JL) * (RRAY(KNU,4) + PRMU(JL) |
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S * (RRAY(KNU,5) + PRMU(JL) * RRAY(KNU,6) )))) |
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111 CONTINUE |
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C |
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C |
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C ------------------------------------------------------------------ |
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C |
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C* 2. CONTINUUM SCATTERING CALCULATIONS |
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C --------------------------------- |
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C |
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200 CONTINUE |
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C |
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C* 2.1 CLEAR-SKY FRACTION OF THE COLUMN |
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C -------------------------------- |
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C |
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210 CONTINUE |
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C |
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CALL SWCLR ( KNU |
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S , PAER , flag_aer, tauae, pizae, cgae |
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S , PALBP , PDSIG , ZRAYL, PSEC |
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S , ZCGAZ , ZPIZAZ, ZRAY1 , ZRAY2, ZREFZ, ZRJ0 |
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S , ZRK0 , ZRMU0 , ZTAUAZ, ZTRA1, ZTRA2) |
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C |
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C |
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C* 2.2 CLOUDY FRACTION OF THE COLUMN |
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C ----------------------------- |
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C |
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220 CONTINUE |
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C |
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CALL SWR ( KNU |
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S , PALBD ,PCG ,PCLD ,PDSIG ,POMEGA,ZRAYL |
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S , PSEC ,PTAU |
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S , ZCGAZ ,ZPIZAZ,ZRAY1 ,ZRAY2 ,ZREFZ ,ZRJ ,ZRK,ZRMUE |
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S , ZTAUAZ,ZTRA1 ,ZTRA2) |
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C |
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C |
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C ------------------------------------------------------------------ |
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C |
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C* 3. OZONE ABSORPTION |
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C ---------------- |
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C |
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300 CONTINUE |
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C |
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IIND(1)=1 |
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IIND(2)=3 |
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IIND(3)=1 |
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IIND(4)=3 |
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C |
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C |
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C* 3.1 DOWNWARD FLUXES |
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C --------------- |
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C |
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310 CONTINUE |
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C |
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JAJ = 2 |
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C |
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DO 311 JL = 1, KDLON |
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ZW(JL,1)=0. |
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ZW(JL,2)=0. |
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ZW(JL,3)=0. |
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ZW(JL,4)=0. |
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PFD(JL,KFLEV+1)=((1.-PCLEAR(JL))*ZRJ(JL,JAJ,KFLEV+1) |
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S + PCLEAR(JL) *ZRJ0(JL,JAJ,KFLEV+1)) * RSUN(KNU) |
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311 CONTINUE |
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DO 314 JK = 1 , KFLEV |
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IKL = KFLEV+1-JK |
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DO 312 JL = 1, KDLON |
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ZW(JL,1)=ZW(JL,1)+PUD(JL,1,IKL)/ZRMUE(JL,IKL) |
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ZW(JL,2)=ZW(JL,2)+POZ(JL, IKL)/ZRMUE(JL,IKL) |
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ZW(JL,3)=ZW(JL,3)+PUD(JL,1,IKL)/ZRMU0(JL,IKL) |
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ZW(JL,4)=ZW(JL,4)+POZ(JL, IKL)/ZRMU0(JL,IKL) |
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312 CONTINUE |
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C |
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CALL SWTT1(KNU, 4, IIND, ZW, ZR) |
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C |
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DO 313 JL = 1, KDLON |
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ZDIFF(JL) = ZR(JL,1)*ZR(JL,2)*ZRJ(JL,JAJ,IKL) |
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ZDIRF(JL) = ZR(JL,3)*ZR(JL,4)*ZRJ0(JL,JAJ,IKL) |
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PFD(JL,IKL) = ((1.-PCLEAR(JL)) * ZDIFF(JL) |
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S +PCLEAR(JL) * ZDIRF(JL)) * RSUN(KNU) |
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313 CONTINUE |
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314 CONTINUE |
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C |
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C |
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C* 3.2 UPWARD FLUXES |
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C ------------- |
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C |
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320 CONTINUE |
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C |
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DO 325 JL = 1, KDLON |
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PFU(JL,1) = ((1.-PCLEAR(JL))*ZDIFF(JL)*PALBD(JL,KNU) |
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S + PCLEAR(JL) *ZDIRF(JL)*PALBP(JL,KNU)) |
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S * RSUN(KNU) |
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325 CONTINUE |
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C |
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DO 328 JK = 2 , KFLEV+1 |
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IKM1=JK-1 |
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DO 326 JL = 1, KDLON |
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ZW(JL,1)=ZW(JL,1)+PUD(JL,1,IKM1)*1.66 |
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ZW(JL,2)=ZW(JL,2)+POZ(JL, IKM1)*1.66 |
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ZW(JL,3)=ZW(JL,3)+PUD(JL,1,IKM1)*1.66 |
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ZW(JL,4)=ZW(JL,4)+POZ(JL, IKM1)*1.66 |
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326 CONTINUE |
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C |
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CALL SWTT1(KNU, 4, IIND, ZW, ZR) |
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C |
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DO 327 JL = 1, KDLON |
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ZDIFF(JL) = ZR(JL,1)*ZR(JL,2)*ZRK(JL,JAJ,JK) |
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ZDIRF(JL) = ZR(JL,3)*ZR(JL,4)*ZRK0(JL,JAJ,JK) |
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PFU(JL,JK) = ((1.-PCLEAR(JL)) * ZDIFF(JL) |
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S +PCLEAR(JL) * ZDIRF(JL)) * RSUN(KNU) |
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327 CONTINUE |
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328 CONTINUE |
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C |
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C ------------------------------------------------------------------ |
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C |
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RETURN |
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END |
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