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guez |
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SUBROUTINE SWCLR ( KNU |
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S , PAER , flag_aer, tauae, pizae, cgae |
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S , PALBP , PDSIG , PRAYL , PSEC |
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S , PCGAZ , PPIZAZ, PRAY1 , PRAY2 , PREFZ , PRJ |
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S , PRK , PRMU0 , PTAUAZ, PTRA1 , PTRA2 ) |
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use dimens_m |
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use dimphy |
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use raddim |
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use radepsi |
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use radopt |
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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 COMPUTES THE REFLECTIVITY AND TRANSMISSIVITY IN CASE OF |
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C CLEAR-SKY COLUMN |
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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 : 94-11-15 |
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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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guez |
71 |
double precision flag_aer |
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double precision tauae(kdlon,kflev,2) |
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double precision pizae(kdlon,kflev,2) |
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double precision cgae(kdlon,kflev,2) |
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DOUBLE PRECISION PAER(KDLON,KFLEV,5) |
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DOUBLE PRECISION PALBP(KDLON,2) |
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DOUBLE PRECISION PDSIG(KDLON,KFLEV) |
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DOUBLE PRECISION PRAYL(KDLON) |
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DOUBLE PRECISION PSEC(KDLON) |
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guez |
24 |
C |
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guez |
71 |
DOUBLE PRECISION PCGAZ(KDLON,KFLEV) |
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DOUBLE PRECISION PPIZAZ(KDLON,KFLEV) |
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DOUBLE PRECISION PRAY1(KDLON,KFLEV+1) |
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DOUBLE PRECISION PRAY2(KDLON,KFLEV+1) |
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DOUBLE PRECISION PREFZ(KDLON,2,KFLEV+1) |
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DOUBLE PRECISION PRJ(KDLON,6,KFLEV+1) |
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DOUBLE PRECISION PRK(KDLON,6,KFLEV+1) |
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DOUBLE PRECISION PRMU0(KDLON,KFLEV+1) |
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DOUBLE PRECISION PTAUAZ(KDLON,KFLEV) |
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DOUBLE PRECISION PTRA1(KDLON,KFLEV+1) |
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DOUBLE PRECISION PTRA2(KDLON,KFLEV+1) |
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guez |
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C |
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C* LOCAL VARIABLES: |
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C |
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guez |
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DOUBLE PRECISION ZC0I(KDLON,KFLEV+1) |
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DOUBLE PRECISION ZCLE0(KDLON,KFLEV) |
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DOUBLE PRECISION ZCLEAR(KDLON) |
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DOUBLE PRECISION ZR21(KDLON) |
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DOUBLE PRECISION ZR23(KDLON) |
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DOUBLE PRECISION ZSS0(KDLON) |
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DOUBLE PRECISION ZSCAT(KDLON) |
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DOUBLE PRECISION ZTR(KDLON,2,KFLEV+1) |
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guez |
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C |
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INTEGER jl, jk, ja, jae, jkl, jklp1, jaj, jkm1, in |
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guez |
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DOUBLE PRECISION ZTRAY, ZGAR, ZRATIO, ZFF, ZFACOA, ZCORAE |
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DOUBLE PRECISION ZMUE, ZGAP, ZWW, ZTO, ZDEN, ZMU1, ZDEN1 |
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DOUBLE PRECISION ZBMU0, ZBMU1, ZRE11 |
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guez |
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C |
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C* Prescribed Data for Aerosols: |
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C |
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guez |
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DOUBLE PRECISION TAUA(2,5), RPIZA(2,5), RCGA(2,5) |
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guez |
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SAVE TAUA, RPIZA, RCGA |
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DATA ((TAUA(IN,JA),JA=1,5),IN=1,2) / |
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S .730719, .912819, .725059, .745405, .682188 , |
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S .730719, .912819, .725059, .745405, .682188 / |
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DATA ((RPIZA(IN,JA),JA=1,5),IN=1,2) / |
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S .872212, .982545, .623143, .944887, .997975 , |
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S .872212, .982545, .623143, .944887, .997975 / |
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DATA ((RCGA (IN,JA),JA=1,5),IN=1,2) / |
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S .647596, .739002, .580845, .662657, .624246 , |
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S .647596, .739002, .580845, .662657, .624246 / |
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C ------------------------------------------------------------------ |
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C |
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C* 1. OPTICAL PARAMETERS FOR AEROSOLS AND RAYLEIGH |
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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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DO 103 JK = 1 , KFLEV+1 |
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DO 102 JA = 1 , 6 |
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DO 101 JL = 1, KDLON |
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PRJ(JL,JA,JK) = 0. |
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PRK(JL,JA,JK) = 0. |
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101 CONTINUE |
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102 CONTINUE |
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103 CONTINUE |
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C |
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DO 108 JK = 1 , KFLEV |
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c-OB |
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c DO 104 JL = 1, KDLON |
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c PCGAZ(JL,JK) = 0. |
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c PPIZAZ(JL,JK) = 0. |
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c PTAUAZ(JL,JK) = 0. |
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c 104 CONTINUE |
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c-OB |
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c DO 106 JAE=1,5 |
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c DO 105 JL = 1, KDLON |
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c PTAUAZ(JL,JK)=PTAUAZ(JL,JK) |
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c S +PAER(JL,JK,JAE)*TAUA(KNU,JAE) |
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c PPIZAZ(JL,JK)=PPIZAZ(JL,JK)+PAER(JL,JK,JAE) |
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c S * TAUA(KNU,JAE)*RPIZA(KNU,JAE) |
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c PCGAZ(JL,JK) = PCGAZ(JL,JK) +PAER(JL,JK,JAE) |
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c S * TAUA(KNU,JAE)*RPIZA(KNU,JAE)*RCGA(KNU,JAE) |
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c 105 CONTINUE |
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c 106 CONTINUE |
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c-OB |
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DO 105 JL = 1, KDLON |
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PTAUAZ(JL,JK)=flag_aer * tauae(JL,JK,KNU) |
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PPIZAZ(JL,JK)=flag_aer * pizae(JL,JK,KNU) |
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PCGAZ (JL,JK)=flag_aer * cgae(JL,JK,KNU) |
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105 CONTINUE |
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C |
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IF (flag_aer.GT.0) THEN |
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c-OB |
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DO 107 JL = 1, KDLON |
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c PCGAZ(JL,JK)=PCGAZ(JL,JK)/PPIZAZ(JL,JK) |
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c PPIZAZ(JL,JK)=PPIZAZ(JL,JK)/PTAUAZ(JL,JK) |
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ZTRAY = PRAYL(JL) * PDSIG(JL,JK) |
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ZRATIO = ZTRAY / (ZTRAY + PTAUAZ(JL,JK)) |
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ZGAR = PCGAZ(JL,JK) |
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ZFF = ZGAR * ZGAR |
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PTAUAZ(JL,JK)=ZTRAY+PTAUAZ(JL,JK)*(1.-PPIZAZ(JL,JK)*ZFF) |
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PCGAZ(JL,JK) = ZGAR * (1. - ZRATIO) / (1. + ZGAR) |
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PPIZAZ(JL,JK) =ZRATIO+(1.-ZRATIO)*PPIZAZ(JL,JK)*(1.-ZFF) |
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S / (1. - PPIZAZ(JL,JK) * ZFF) |
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107 CONTINUE |
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ELSE |
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DO JL = 1, KDLON |
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ZTRAY = PRAYL(JL) * PDSIG(JL,JK) |
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PTAUAZ(JL,JK) = ZTRAY |
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PCGAZ(JL,JK) = 0. |
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PPIZAZ(JL,JK) = 1.-REPSCT |
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END DO |
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END IF ! check flag_aer |
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c 107 CONTINUE |
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c PRINT 9107,JK,((PAER(JL,JK,JAE),JAE=1,5) |
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c $ ,PTAUAZ(JL,JK),PPIZAZ(JL,JK),PCGAZ(JL,JK),JL=1,KDLON) |
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c 9107 FORMAT(1X,'SWCLR_107',I3,8E12.5) |
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C |
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108 CONTINUE |
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C |
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C ------------------------------------------------------------------ |
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C |
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C* 2. TOTAL EFFECTIVE CLOUDINESS ABOVE A GIVEN LEVEL |
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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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DO 201 JL = 1, KDLON |
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ZR23(JL) = 0. |
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ZC0I(JL,KFLEV+1) = 0. |
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ZCLEAR(JL) = 1. |
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ZSCAT(JL) = 0. |
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201 CONTINUE |
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C |
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JK = 1 |
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JKL = KFLEV+1 - JK |
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JKLP1 = JKL + 1 |
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DO 202 JL = 1, KDLON |
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ZFACOA = 1. - PPIZAZ(JL,JKL)*PCGAZ(JL,JKL)*PCGAZ(JL,JKL) |
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ZCORAE = ZFACOA * PTAUAZ(JL,JKL) * PSEC(JL) |
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ZR21(JL) = EXP(-ZCORAE ) |
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ZSS0(JL) = 1.-ZR21(JL) |
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ZCLE0(JL,JKL) = ZSS0(JL) |
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C |
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IF (NOVLP.EQ.1) THEN |
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c* maximum-random |
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ZCLEAR(JL) = ZCLEAR(JL) |
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S *(1.0-MAX(ZSS0(JL),ZSCAT(JL))) |
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S /(1.0-MIN(ZSCAT(JL),1.-ZEPSEC)) |
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ZC0I(JL,JKL) = 1.0 - ZCLEAR(JL) |
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ZSCAT(JL) = ZSS0(JL) |
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ELSE IF (NOVLP.EQ.2) THEN |
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C* maximum |
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ZSCAT(JL) = MAX( ZSS0(JL) , ZSCAT(JL) ) |
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ZC0I(JL,JKL) = ZSCAT(JL) |
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ELSE IF (NOVLP.EQ.3) THEN |
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c* random |
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ZCLEAR(JL)=ZCLEAR(JL)*(1.0-ZSS0(JL)) |
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ZSCAT(JL) = 1.0 - ZCLEAR(JL) |
| 197 |
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ZC0I(JL,JKL) = ZSCAT(JL) |
| 198 |
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END IF |
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202 CONTINUE |
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C |
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DO 205 JK = 2 , KFLEV |
| 202 |
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JKL = KFLEV+1 - JK |
| 203 |
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JKLP1 = JKL + 1 |
| 204 |
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DO 204 JL = 1, KDLON |
| 205 |
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ZFACOA = 1. - PPIZAZ(JL,JKL)*PCGAZ(JL,JKL)*PCGAZ(JL,JKL) |
| 206 |
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ZCORAE = ZFACOA * PTAUAZ(JL,JKL) * PSEC(JL) |
| 207 |
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ZR21(JL) = EXP(-ZCORAE ) |
| 208 |
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ZSS0(JL) = 1.-ZR21(JL) |
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ZCLE0(JL,JKL) = ZSS0(JL) |
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c |
| 211 |
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IF (NOVLP.EQ.1) THEN |
| 212 |
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c* maximum-random |
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ZCLEAR(JL) = ZCLEAR(JL) |
| 214 |
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S *(1.0-MAX(ZSS0(JL),ZSCAT(JL))) |
| 215 |
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S /(1.0-MIN(ZSCAT(JL),1.-ZEPSEC)) |
| 216 |
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ZC0I(JL,JKL) = 1.0 - ZCLEAR(JL) |
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ZSCAT(JL) = ZSS0(JL) |
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ELSE IF (NOVLP.EQ.2) THEN |
| 219 |
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C* maximum |
| 220 |
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ZSCAT(JL) = MAX( ZSS0(JL) , ZSCAT(JL) ) |
| 221 |
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ZC0I(JL,JKL) = ZSCAT(JL) |
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ELSE IF (NOVLP.EQ.3) THEN |
| 223 |
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c* random |
| 224 |
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ZCLEAR(JL)=ZCLEAR(JL)*(1.0-ZSS0(JL)) |
| 225 |
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ZSCAT(JL) = 1.0 - ZCLEAR(JL) |
| 226 |
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ZC0I(JL,JKL) = ZSCAT(JL) |
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END IF |
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204 CONTINUE |
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205 CONTINUE |
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C |
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C ------------------------------------------------------------------ |
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C |
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C* 3. REFLECTIVITY/TRANSMISSIVITY FOR PURE SCATTERING |
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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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DO 301 JL = 1, KDLON |
| 239 |
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PRAY1(JL,KFLEV+1) = 0. |
| 240 |
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PRAY2(JL,KFLEV+1) = 0. |
| 241 |
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PREFZ(JL,2,1) = PALBP(JL,KNU) |
| 242 |
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PREFZ(JL,1,1) = PALBP(JL,KNU) |
| 243 |
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PTRA1(JL,KFLEV+1) = 1. |
| 244 |
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PTRA2(JL,KFLEV+1) = 1. |
| 245 |
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301 CONTINUE |
| 246 |
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C |
| 247 |
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DO 346 JK = 2 , KFLEV+1 |
| 248 |
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JKM1 = JK-1 |
| 249 |
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DO 342 JL = 1, KDLON |
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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* 3.1 EQUIVALENT ZENITH ANGLE |
| 255 |
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C ----------------------- |
| 256 |
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C |
| 257 |
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310 CONTINUE |
| 258 |
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C |
| 259 |
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ZMUE = (1.-ZC0I(JL,JK)) * PSEC(JL) |
| 260 |
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S + ZC0I(JL,JK) * 1.66 |
| 261 |
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PRMU0(JL,JK) = 1./ZMUE |
| 262 |
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C |
| 263 |
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C |
| 264 |
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C ------------------------------------------------------------------ |
| 265 |
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C |
| 266 |
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C* 3.2 REFLECT./TRANSMISSIVITY DUE TO RAYLEIGH AND AEROSOLS |
| 267 |
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C ---------------------------------------------------- |
| 268 |
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C |
| 269 |
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320 CONTINUE |
| 270 |
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C |
| 271 |
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ZGAP = PCGAZ(JL,JKM1) |
| 272 |
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ZBMU0 = 0.5 - 0.75 * ZGAP / ZMUE |
| 273 |
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ZWW = PPIZAZ(JL,JKM1) |
| 274 |
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ZTO = PTAUAZ(JL,JKM1) |
| 275 |
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ZDEN = 1. + (1. - ZWW + ZBMU0 * ZWW) * ZTO * ZMUE |
| 276 |
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S + (1-ZWW) * (1. - ZWW +2.*ZBMU0*ZWW)*ZTO*ZTO*ZMUE*ZMUE |
| 277 |
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PRAY1(JL,JKM1) = ZBMU0 * ZWW * ZTO * ZMUE / ZDEN |
| 278 |
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PTRA1(JL,JKM1) = 1. / ZDEN |
| 279 |
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C |
| 280 |
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ZMU1 = 0.5 |
| 281 |
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ZBMU1 = 0.5 - 0.75 * ZGAP * ZMU1 |
| 282 |
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ZDEN1= 1. + (1. - ZWW + ZBMU1 * ZWW) * ZTO / ZMU1 |
| 283 |
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S + (1-ZWW) * (1. - ZWW +2.*ZBMU1*ZWW)*ZTO*ZTO/ZMU1/ZMU1 |
| 284 |
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PRAY2(JL,JKM1) = ZBMU1 * ZWW * ZTO / ZMU1 / ZDEN1 |
| 285 |
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PTRA2(JL,JKM1) = 1. / ZDEN1 |
| 286 |
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C |
| 287 |
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C |
| 288 |
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C |
| 289 |
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PREFZ(JL,1,JK) = (PRAY1(JL,JKM1) |
| 290 |
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S + PREFZ(JL,1,JKM1) * PTRA1(JL,JKM1) |
| 291 |
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S * PTRA2(JL,JKM1) |
| 292 |
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S / (1.-PRAY2(JL,JKM1)*PREFZ(JL,1,JKM1))) |
| 293 |
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C |
| 294 |
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ZTR(JL,1,JKM1) = (PTRA1(JL,JKM1) |
| 295 |
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S / (1.-PRAY2(JL,JKM1)*PREFZ(JL,1,JKM1))) |
| 296 |
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C |
| 297 |
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PREFZ(JL,2,JK) = (PRAY1(JL,JKM1) |
| 298 |
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S + PREFZ(JL,2,JKM1) * PTRA1(JL,JKM1) |
| 299 |
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S * PTRA2(JL,JKM1) ) |
| 300 |
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C |
| 301 |
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ZTR(JL,2,JKM1) = PTRA1(JL,JKM1) |
| 302 |
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C |
| 303 |
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342 CONTINUE |
| 304 |
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346 CONTINUE |
| 305 |
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DO 347 JL = 1, KDLON |
| 306 |
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ZMUE = (1.-ZC0I(JL,1))*PSEC(JL)+ZC0I(JL,1)*1.66 |
| 307 |
|
|
PRMU0(JL,1)=1./ZMUE |
| 308 |
|
|
347 CONTINUE |
| 309 |
|
|
C |
| 310 |
|
|
C |
| 311 |
|
|
C ------------------------------------------------------------------ |
| 312 |
|
|
C |
| 313 |
|
|
C* 3.5 REFLECT./TRANSMISSIVITY BETWEEN SURFACE AND LEVEL |
| 314 |
|
|
C ------------------------------------------------- |
| 315 |
|
|
C |
| 316 |
|
|
350 CONTINUE |
| 317 |
|
|
C |
| 318 |
|
|
IF (KNU.EQ.1) THEN |
| 319 |
|
|
JAJ = 2 |
| 320 |
|
|
DO 351 JL = 1, KDLON |
| 321 |
|
|
PRJ(JL,JAJ,KFLEV+1) = 1. |
| 322 |
|
|
PRK(JL,JAJ,KFLEV+1) = PREFZ(JL, 1,KFLEV+1) |
| 323 |
|
|
351 CONTINUE |
| 324 |
|
|
C |
| 325 |
|
|
DO 353 JK = 1 , KFLEV |
| 326 |
|
|
JKL = KFLEV+1 - JK |
| 327 |
|
|
JKLP1 = JKL + 1 |
| 328 |
|
|
DO 352 JL = 1, KDLON |
| 329 |
|
|
ZRE11= PRJ(JL,JAJ,JKLP1) * ZTR(JL, 1,JKL) |
| 330 |
|
|
PRJ(JL,JAJ,JKL) = ZRE11 |
| 331 |
|
|
PRK(JL,JAJ,JKL) = ZRE11 * PREFZ(JL, 1,JKL) |
| 332 |
|
|
352 CONTINUE |
| 333 |
|
|
353 CONTINUE |
| 334 |
|
|
354 CONTINUE |
| 335 |
|
|
C |
| 336 |
|
|
ELSE |
| 337 |
|
|
C |
| 338 |
|
|
DO 358 JAJ = 1 , 2 |
| 339 |
|
|
DO 355 JL = 1, KDLON |
| 340 |
|
|
PRJ(JL,JAJ,KFLEV+1) = 1. |
| 341 |
|
|
PRK(JL,JAJ,KFLEV+1) = PREFZ(JL,JAJ,KFLEV+1) |
| 342 |
|
|
355 CONTINUE |
| 343 |
|
|
C |
| 344 |
|
|
DO 357 JK = 1 , KFLEV |
| 345 |
|
|
JKL = KFLEV+1 - JK |
| 346 |
|
|
JKLP1 = JKL + 1 |
| 347 |
|
|
DO 356 JL = 1, KDLON |
| 348 |
|
|
ZRE11= PRJ(JL,JAJ,JKLP1) * ZTR(JL,JAJ,JKL) |
| 349 |
|
|
PRJ(JL,JAJ,JKL) = ZRE11 |
| 350 |
|
|
PRK(JL,JAJ,JKL) = ZRE11 * PREFZ(JL,JAJ,JKL) |
| 351 |
|
|
356 CONTINUE |
| 352 |
|
|
357 CONTINUE |
| 353 |
|
|
358 CONTINUE |
| 354 |
|
|
C |
| 355 |
|
|
END IF |
| 356 |
|
|
C |
| 357 |
|
|
C ------------------------------------------------------------------ |
| 358 |
|
|
C |
| 359 |
|
|
RETURN |
| 360 |
|
|
END |
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