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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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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 PALBP(KDLON,2) |
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REAL*8 PDSIG(KDLON,KFLEV) |
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REAL*8 PRAYL(KDLON) |
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REAL*8 PSEC(KDLON) |
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C |
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REAL*8 PCGAZ(KDLON,KFLEV) |
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REAL*8 PPIZAZ(KDLON,KFLEV) |
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REAL*8 PRAY1(KDLON,KFLEV+1) |
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REAL*8 PRAY2(KDLON,KFLEV+1) |
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REAL*8 PREFZ(KDLON,2,KFLEV+1) |
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REAL*8 PRJ(KDLON,6,KFLEV+1) |
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REAL*8 PRK(KDLON,6,KFLEV+1) |
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REAL*8 PRMU0(KDLON,KFLEV+1) |
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REAL*8 PTAUAZ(KDLON,KFLEV) |
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REAL*8 PTRA1(KDLON,KFLEV+1) |
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REAL*8 PTRA2(KDLON,KFLEV+1) |
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C |
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C* LOCAL VARIABLES: |
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C |
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REAL*8 ZC0I(KDLON,KFLEV+1) |
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REAL*8 ZCLE0(KDLON,KFLEV) |
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REAL*8 ZCLEAR(KDLON) |
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REAL*8 ZR21(KDLON) |
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REAL*8 ZR23(KDLON) |
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REAL*8 ZSS0(KDLON) |
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REAL*8 ZSCAT(KDLON) |
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REAL*8 ZTR(KDLON,2,KFLEV+1) |
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C |
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INTEGER jl, jk, ja, jae, jkl, jklp1, jaj, jkm1, in |
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REAL*8 ZTRAY, ZGAR, ZRATIO, ZFF, ZFACOA, ZCORAE |
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REAL*8 ZMUE, ZGAP, ZWW, ZTO, ZDEN, ZMU1, ZDEN1 |
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REAL*8 ZBMU0, ZBMU1, ZRE11 |
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C |
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C* Prescribed Data for Aerosols: |
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C |
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REAL*8 TAUA(2,5), RPIZA(2,5), RCGA(2,5) |
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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 |
98 |
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PRJ(JL,JA,JK) = 0. |
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PRK(JL,JA,JK) = 0. |
100 |
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101 CONTINUE |
101 |
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102 CONTINUE |
102 |
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103 CONTINUE |
103 |
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C |
104 |
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DO 108 JK = 1 , KFLEV |
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c-OB |
106 |
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c DO 104 JL = 1, KDLON |
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c PCGAZ(JL,JK) = 0. |
108 |
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c PPIZAZ(JL,JK) = 0. |
109 |
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c PTAUAZ(JL,JK) = 0. |
110 |
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c 104 CONTINUE |
111 |
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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) |
117 |
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c S * TAUA(KNU,JAE)*RPIZA(KNU,JAE) |
118 |
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c PCGAZ(JL,JK) = PCGAZ(JL,JK) +PAER(JL,JK,JAE) |
119 |
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c S * TAUA(KNU,JAE)*RPIZA(KNU,JAE)*RCGA(KNU,JAE) |
120 |
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c 105 CONTINUE |
121 |
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c 106 CONTINUE |
122 |
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c-OB |
123 |
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DO 105 JL = 1, KDLON |
124 |
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PTAUAZ(JL,JK)=flag_aer * tauae(JL,JK,KNU) |
125 |
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PPIZAZ(JL,JK)=flag_aer * pizae(JL,JK,KNU) |
126 |
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PCGAZ (JL,JK)=flag_aer * cgae(JL,JK,KNU) |
127 |
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105 CONTINUE |
128 |
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C |
129 |
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IF (flag_aer.GT.0) THEN |
130 |
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c-OB |
131 |
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DO 107 JL = 1, KDLON |
132 |
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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) |
134 |
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ZTRAY = PRAYL(JL) * PDSIG(JL,JK) |
135 |
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ZRATIO = ZTRAY / (ZTRAY + PTAUAZ(JL,JK)) |
136 |
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ZGAR = PCGAZ(JL,JK) |
137 |
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ZFF = ZGAR * ZGAR |
138 |
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PTAUAZ(JL,JK)=ZTRAY+PTAUAZ(JL,JK)*(1.-PPIZAZ(JL,JK)*ZFF) |
139 |
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PCGAZ(JL,JK) = ZGAR * (1. - ZRATIO) / (1. + ZGAR) |
140 |
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PPIZAZ(JL,JK) =ZRATIO+(1.-ZRATIO)*PPIZAZ(JL,JK)*(1.-ZFF) |
141 |
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S / (1. - PPIZAZ(JL,JK) * ZFF) |
142 |
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107 CONTINUE |
143 |
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ELSE |
144 |
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DO JL = 1, KDLON |
145 |
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ZTRAY = PRAYL(JL) * PDSIG(JL,JK) |
146 |
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PTAUAZ(JL,JK) = ZTRAY |
147 |
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PCGAZ(JL,JK) = 0. |
148 |
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PPIZAZ(JL,JK) = 1.-REPSCT |
149 |
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END DO |
150 |
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END IF ! check flag_aer |
151 |
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c 107 CONTINUE |
152 |
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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) |
154 |
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c 9107 FORMAT(1X,'SWCLR_107',I3,8E12.5) |
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C |
156 |
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108 CONTINUE |
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C |
158 |
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C ------------------------------------------------------------------ |
159 |
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C |
160 |
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C* 2. TOTAL EFFECTIVE CLOUDINESS ABOVE A GIVEN LEVEL |
161 |
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C ---------------------------------------------- |
162 |
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C |
163 |
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200 CONTINUE |
164 |
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C |
165 |
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DO 201 JL = 1, KDLON |
166 |
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ZR23(JL) = 0. |
167 |
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ZC0I(JL,KFLEV+1) = 0. |
168 |
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ZCLEAR(JL) = 1. |
169 |
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ZSCAT(JL) = 0. |
170 |
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201 CONTINUE |
171 |
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C |
172 |
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JK = 1 |
173 |
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JKL = KFLEV+1 - JK |
174 |
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JKLP1 = JKL + 1 |
175 |
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DO 202 JL = 1, KDLON |
176 |
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ZFACOA = 1. - PPIZAZ(JL,JKL)*PCGAZ(JL,JKL)*PCGAZ(JL,JKL) |
177 |
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ZCORAE = ZFACOA * PTAUAZ(JL,JKL) * PSEC(JL) |
178 |
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ZR21(JL) = EXP(-ZCORAE ) |
179 |
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ZSS0(JL) = 1.-ZR21(JL) |
180 |
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ZCLE0(JL,JKL) = ZSS0(JL) |
181 |
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C |
182 |
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IF (NOVLP.EQ.1) THEN |
183 |
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c* maximum-random |
184 |
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ZCLEAR(JL) = ZCLEAR(JL) |
185 |
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S *(1.0-MAX(ZSS0(JL),ZSCAT(JL))) |
186 |
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S /(1.0-MIN(ZSCAT(JL),1.-ZEPSEC)) |
187 |
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ZC0I(JL,JKL) = 1.0 - ZCLEAR(JL) |
188 |
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ZSCAT(JL) = ZSS0(JL) |
189 |
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ELSE IF (NOVLP.EQ.2) THEN |
190 |
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C* maximum |
191 |
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ZSCAT(JL) = MAX( ZSS0(JL) , ZSCAT(JL) ) |
192 |
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ZC0I(JL,JKL) = ZSCAT(JL) |
193 |
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ELSE IF (NOVLP.EQ.3) THEN |
194 |
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c* random |
195 |
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ZCLEAR(JL)=ZCLEAR(JL)*(1.0-ZSS0(JL)) |
196 |
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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 |
199 |
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202 CONTINUE |
200 |
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C |
201 |
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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) |
209 |
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ZCLE0(JL,JKL) = ZSS0(JL) |
210 |
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c |
211 |
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IF (NOVLP.EQ.1) THEN |
212 |
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c* maximum-random |
213 |
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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) |
217 |
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ZSCAT(JL) = ZSS0(JL) |
218 |
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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) |
222 |
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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) |
227 |
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END IF |
228 |
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204 CONTINUE |
229 |
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205 CONTINUE |
230 |
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C |
231 |
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C ------------------------------------------------------------------ |
232 |
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C |
233 |
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C* 3. REFLECTIVITY/TRANSMISSIVITY FOR PURE SCATTERING |
234 |
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C ----------------------------------------------- |
235 |
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C |
236 |
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300 CONTINUE |
237 |
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C |
238 |
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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 |
250 |
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C |
251 |
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C |
252 |
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C ------------------------------------------------------------------ |
253 |
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C |
254 |
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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 |
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PRMU0(JL,1)=1./ZMUE |
308 |
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347 CONTINUE |
309 |
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C |
310 |
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C |
311 |
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C ------------------------------------------------------------------ |
312 |
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C |
313 |
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C* 3.5 REFLECT./TRANSMISSIVITY BETWEEN SURFACE AND LEVEL |
314 |
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C ------------------------------------------------- |
315 |
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C |
316 |
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350 CONTINUE |
317 |
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C |
318 |
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IF (KNU.EQ.1) THEN |
319 |
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JAJ = 2 |
320 |
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DO 351 JL = 1, KDLON |
321 |
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PRJ(JL,JAJ,KFLEV+1) = 1. |
322 |
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PRK(JL,JAJ,KFLEV+1) = PREFZ(JL, 1,KFLEV+1) |
323 |
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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 |