6 |
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7 |
SUBROUTINE swclr(knu, flag_aer, palbp, pdsig, prayl, psec, pcgaz, ppizaz, & |
SUBROUTINE swclr(knu, flag_aer, palbp, pdsig, prayl, psec, pcgaz, ppizaz, & |
8 |
pray1, pray2, prefz, prj, prk, prmu0, ptauaz, ptra1, ptra2) |
pray1, pray2, prefz, prj, prk, prmu0, ptauaz, ptra1, ptra2) |
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USE raddim, only: kdlon, kflev |
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USE radepsi, only: repsct, zepsec |
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USE radopt, only: novlp |
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9 |
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! ------------------------------------------------------------------ |
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10 |
! PURPOSE. |
! PURPOSE. |
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! -------- |
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11 |
! COMPUTES THE REFLECTIVITY AND TRANSMISSIVITY IN CASE OF |
! COMPUTES THE REFLECTIVITY AND TRANSMISSIVITY IN CASE OF |
12 |
! CLEAR-SKY COLUMN |
! CLEAR-SKY COLUMN |
13 |
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14 |
! REFERENCE. |
! REFERENCE. |
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! ---------- |
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15 |
! SEE RADIATION'S PART OF THE ECMWF RESEARCH DEPARTMENT |
! SEE RADIATION'S PART OF THE ECMWF RESEARCH DEPARTMENT |
16 |
! DOCUMENTATION, AND FOUQUART AND BONNEL (1980) |
! DOCUMENTATION, AND FOUQUART AND BONNEL (1980) |
17 |
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18 |
! AUTHOR. |
! AUTHOR. |
19 |
! ------- |
! JEAN-JACQUES MORCRETTE *ECMWF* |
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! JEAN-JACQUES MORCRETTE *ECMWF* |
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20 |
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21 |
! MODIFICATIONS. |
! MODIFICATIONS. |
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! -------------- |
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22 |
! ORIGINAL : 94-11-15 |
! ORIGINAL : 94-11-15 |
23 |
! ------------------------------------------------------------------ |
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24 |
! * ARGUMENTS: |
USE raddim, only: kdlon, kflev |
25 |
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USE radepsi, only: zepsec |
26 |
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USE radopt, only: novlp |
27 |
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28 |
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! ARGUMENTS: |
29 |
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30 |
INTEGER knu |
INTEGER knu |
31 |
! -OB |
! -OB |
32 |
logical, intent(in):: flag_aer |
logical, intent(in):: flag_aer |
33 |
DOUBLE PRECISION palbp(kdlon, 2) |
DOUBLE PRECISION palbp(kdlon, 2) |
34 |
DOUBLE PRECISION pdsig(kdlon, kflev) |
DOUBLE PRECISION, intent(in):: pdsig(kdlon, kflev) |
35 |
DOUBLE PRECISION prayl(kdlon) |
DOUBLE PRECISION, intent(in):: prayl(kdlon) |
36 |
DOUBLE PRECISION psec(kdlon) |
DOUBLE PRECISION psec(kdlon) |
37 |
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38 |
DOUBLE PRECISION pcgaz(kdlon, kflev) |
DOUBLE PRECISION, intent(out):: pcgaz(kdlon, kflev) |
39 |
DOUBLE PRECISION ppizaz(kdlon, kflev) |
DOUBLE PRECISION, intent(out):: ppizaz(kdlon, kflev) |
40 |
DOUBLE PRECISION pray1(kdlon, kflev+1) |
DOUBLE PRECISION pray1(kdlon, kflev + 1) |
41 |
DOUBLE PRECISION pray2(kdlon, kflev+1) |
DOUBLE PRECISION pray2(kdlon, kflev + 1) |
42 |
DOUBLE PRECISION prefz(kdlon, 2, kflev+1) |
DOUBLE PRECISION prefz(kdlon, 2, kflev + 1) |
43 |
DOUBLE PRECISION prj(kdlon, 6, kflev+1) |
DOUBLE PRECISION prj(kdlon, 6, kflev + 1) |
44 |
DOUBLE PRECISION prk(kdlon, 6, kflev+1) |
DOUBLE PRECISION prk(kdlon, 6, kflev + 1) |
45 |
DOUBLE PRECISION prmu0(kdlon, kflev+1) |
DOUBLE PRECISION prmu0(kdlon, kflev + 1) |
46 |
DOUBLE PRECISION ptauaz(kdlon, kflev) |
DOUBLE PRECISION, intent(out):: ptauaz(kdlon, kflev) |
47 |
DOUBLE PRECISION ptra1(kdlon, kflev+1) |
DOUBLE PRECISION ptra1(kdlon, kflev + 1) |
48 |
DOUBLE PRECISION ptra2(kdlon, kflev+1) |
DOUBLE PRECISION ptra2(kdlon, kflev + 1) |
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! * LOCAL VARIABLES: |
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49 |
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50 |
DOUBLE PRECISION zc0i(kdlon, kflev+1) |
! LOCAL VARIABLES: |
51 |
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DOUBLE PRECISION zc0i(kdlon, kflev + 1) |
52 |
DOUBLE PRECISION zclear(kdlon) |
DOUBLE PRECISION zclear(kdlon) |
53 |
DOUBLE PRECISION zr21(kdlon) |
DOUBLE PRECISION zr21(kdlon) |
54 |
DOUBLE PRECISION zss0(kdlon) |
DOUBLE PRECISION zss0(kdlon) |
55 |
DOUBLE PRECISION zscat(kdlon) |
DOUBLE PRECISION zscat(kdlon) |
56 |
DOUBLE PRECISION ztr(kdlon, 2, kflev+1) |
DOUBLE PRECISION ztr(kdlon, 2, kflev + 1) |
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57 |
INTEGER jl, jk, ja, jkl, jklp1, jaj, jkm1 |
INTEGER jl, jk, ja, jkl, jklp1, jaj, jkm1 |
58 |
DOUBLE PRECISION ztray, zgar, zratio, zff, zfacoa, zcorae |
DOUBLE PRECISION zfacoa, zcorae |
59 |
DOUBLE PRECISION zmue, zgap, zww, zto, zden, zmu1, zden1 |
DOUBLE PRECISION zmue, zgap, zww, zto, zden, zmu1, zden1 |
60 |
DOUBLE PRECISION zbmu0, zbmu1, zre11 |
DOUBLE PRECISION zbmu0, zbmu1, zre11 |
61 |
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double precision, parameter:: REPSCT = 1d-10 |
62 |
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63 |
! ------------------------------------------------------------------ |
!------------------------------------------------------------------ |
64 |
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65 |
! * 1. OPTICAL PARAMETERS FOR AEROSOLS AND RAYLEIGH |
! 1. OPTICAL PARAMETERS FOR AEROSOLS AND RAYLEIGH |
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! -------------------------------------------- |
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66 |
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67 |
DO jk = 1, kflev + 1 |
DO jk = 1, kflev + 1 |
68 |
DO ja = 1, 6 |
DO ja = 1, 6 |
69 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
70 |
prj(jl, ja, jk) = 0. |
prj(jl, ja, jk) = 0d0 |
71 |
prk(jl, ja, jk) = 0. |
prk(jl, ja, jk) = 0d0 |
72 |
END DO |
END DO |
73 |
END DO |
END DO |
74 |
END DO |
END DO |
75 |
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76 |
DO jk = 1, kflev |
DO jk = 1, kflev |
77 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
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ptauaz(jl, jk) = 0d0 |
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ppizaz(jl, jk) = 0d0 |
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78 |
pcgaz(jl, jk) = 0d0 |
pcgaz(jl, jk) = 0d0 |
79 |
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ptauaz(jl, jk) = prayl(jl) * pdsig(jl, jk) |
80 |
END DO |
END DO |
81 |
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82 |
IF (flag_aer) THEN |
IF (flag_aer) THEN |
83 |
! -OB |
! -OB |
84 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
85 |
ztray = prayl(jl)*pdsig(jl, jk) |
ppizaz(jl, jk) = 1d0 |
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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)/(1.- & |
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ppizaz(jl,jk)*zff) |
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86 |
END DO |
END DO |
87 |
ELSE |
ELSE |
88 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
89 |
ztray = prayl(jl)*pdsig(jl, jk) |
ppizaz(jl, jk) = 1d0 - repsct |
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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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90 |
END DO |
END DO |
91 |
END IF |
END IF |
92 |
END DO |
END DO |
93 |
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94 |
! ------------------------------------------------------------------ |
! 2. TOTAL EFFECTIVE CLOUDINESS ABOVE A GIVEN LEVEL |
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! * 2. TOTAL EFFECTIVE CLOUDINESS ABOVE A GIVEN LEVEL |
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! ---------------------------------------------- |
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95 |
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96 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
97 |
zc0i(jl, kflev+1) = 0. |
zc0i(jl, kflev + 1) = 0d0 |
98 |
zclear(jl) = 1. |
zclear(jl) = 1d0 |
99 |
zscat(jl) = 0. |
zscat(jl) = 0d0 |
100 |
END DO |
END DO |
101 |
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102 |
jk = 1 |
jk = 1 |
103 |
jkl = kflev + 1 - jk |
jkl = kflev + 1 - jk |
104 |
jklp1 = jkl + 1 |
jklp1 = jkl + 1 |
105 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
106 |
zfacoa = 1. - ppizaz(jl, jkl)*pcgaz(jl, jkl)*pcgaz(jl, jkl) |
zfacoa = 1d0 |
107 |
zcorae = zfacoa*ptauaz(jl, jkl)*psec(jl) |
zcorae = zfacoa * ptauaz(jl, jkl) * psec(jl) |
108 |
zr21(jl) = exp(-zcorae) |
zr21(jl) = exp(- zcorae) |
109 |
zss0(jl) = 1. - zr21(jl) |
zss0(jl) = 1d0 - zr21(jl) |
110 |
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111 |
IF (novlp==1) THEN |
IF (novlp == 1) THEN |
112 |
! * maximum-random |
! maximum-random |
113 |
zclear(jl) = zclear(jl)*(1.0-max(zss0(jl),zscat(jl)))/ & |
zclear(jl) = zclear(jl) * (1d0 - max(zss0(jl), zscat(jl))) / (1d0 & |
114 |
(1.0-min(zscat(jl),1.-zepsec)) |
- min(zscat(jl), 1d0 - zepsec)) |
115 |
zc0i(jl, jkl) = 1.0 - zclear(jl) |
zc0i(jl, jkl) = 1d0 - zclear(jl) |
116 |
zscat(jl) = zss0(jl) |
zscat(jl) = zss0(jl) |
117 |
ELSE IF (novlp==2) THEN |
ELSE IF (novlp == 2) THEN |
118 |
! * maximum |
! maximum |
119 |
zscat(jl) = max(zss0(jl), zscat(jl)) |
zscat(jl) = max(zss0(jl), zscat(jl)) |
120 |
zc0i(jl, jkl) = zscat(jl) |
zc0i(jl, jkl) = zscat(jl) |
121 |
ELSE IF (novlp==3) THEN |
ELSE IF (novlp == 3) THEN |
122 |
! * random |
! random |
123 |
zclear(jl) = zclear(jl)*(1.0-zss0(jl)) |
zclear(jl) = zclear(jl) * (1d0 - zss0(jl)) |
124 |
zscat(jl) = 1.0 - zclear(jl) |
zscat(jl) = 1d0 - zclear(jl) |
125 |
zc0i(jl, jkl) = zscat(jl) |
zc0i(jl, jkl) = zscat(jl) |
126 |
END IF |
END IF |
127 |
END DO |
END DO |
130 |
jkl = kflev + 1 - jk |
jkl = kflev + 1 - jk |
131 |
jklp1 = jkl + 1 |
jklp1 = jkl + 1 |
132 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
133 |
zfacoa = 1. - ppizaz(jl, jkl)*pcgaz(jl, jkl)*pcgaz(jl, jkl) |
zfacoa = 1d0 |
134 |
zcorae = zfacoa*ptauaz(jl, jkl)*psec(jl) |
zcorae = zfacoa * ptauaz(jl, jkl) * psec(jl) |
135 |
zr21(jl) = exp(-zcorae) |
zr21(jl) = exp(- zcorae) |
136 |
zss0(jl) = 1. - zr21(jl) |
zss0(jl) = 1d0 - zr21(jl) |
137 |
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138 |
IF (novlp==1) THEN |
IF (novlp == 1) THEN |
139 |
! * maximum-random |
! maximum-random |
140 |
zclear(jl) = zclear(jl)*(1.0-max(zss0(jl),zscat(jl)))/ & |
zclear(jl) = zclear(jl) * (1d0 - max(zss0(jl), zscat(jl))) & |
141 |
(1.0-min(zscat(jl),1.-zepsec)) |
/ (1d0 - min(zscat(jl), 1d0 - zepsec)) |
142 |
zc0i(jl, jkl) = 1.0 - zclear(jl) |
zc0i(jl, jkl) = 1d0 - zclear(jl) |
143 |
zscat(jl) = zss0(jl) |
zscat(jl) = zss0(jl) |
144 |
ELSE IF (novlp==2) THEN |
ELSE IF (novlp == 2) THEN |
145 |
! * maximum |
! maximum |
146 |
zscat(jl) = max(zss0(jl), zscat(jl)) |
zscat(jl) = max(zss0(jl), zscat(jl)) |
147 |
zc0i(jl, jkl) = zscat(jl) |
zc0i(jl, jkl) = zscat(jl) |
148 |
ELSE IF (novlp==3) THEN |
ELSE IF (novlp == 3) THEN |
149 |
! * random |
! random |
150 |
zclear(jl) = zclear(jl)*(1.0-zss0(jl)) |
zclear(jl) = zclear(jl) * (1d0 - zss0(jl)) |
151 |
zscat(jl) = 1.0 - zclear(jl) |
zscat(jl) = 1d0 - zclear(jl) |
152 |
zc0i(jl, jkl) = zscat(jl) |
zc0i(jl, jkl) = zscat(jl) |
153 |
END IF |
END IF |
154 |
END DO |
END DO |
155 |
END DO |
END DO |
156 |
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157 |
! ------------------------------------------------------------------ |
! 3. REFLECTIVITY/TRANSMISSIVITY FOR PURE SCATTERING |
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! * 3. REFLECTIVITY/TRANSMISSIVITY FOR PURE SCATTERING |
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! ----------------------------------------------- |
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158 |
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159 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
160 |
pray1(jl, kflev+1) = 0. |
pray1(jl, kflev + 1) = 0d0 |
161 |
pray2(jl, kflev+1) = 0. |
pray2(jl, kflev + 1) = 0d0 |
162 |
prefz(jl, 2, 1) = palbp(jl, knu) |
prefz(jl, 2, 1) = palbp(jl, knu) |
163 |
prefz(jl, 1, 1) = palbp(jl, knu) |
prefz(jl, 1, 1) = palbp(jl, knu) |
164 |
ptra1(jl, kflev+1) = 1. |
ptra1(jl, kflev + 1) = 1d0 |
165 |
ptra2(jl, kflev+1) = 1. |
ptra2(jl, kflev + 1) = 1d0 |
166 |
END DO |
END DO |
167 |
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168 |
DO jk = 2, kflev + 1 |
DO jk = 2, kflev + 1 |
169 |
jkm1 = jk - 1 |
jkm1 = jk - 1 |
170 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
171 |
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172 |
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! 3.1 EQUIVALENT ZENITH ANGLE |
173 |
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174 |
! ------------------------------------------------------------------ |
zmue = (1d0 - zc0i(jl, jk)) * psec(jl) + zc0i(jl, jk) * 1.66d0 |
175 |
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prmu0(jl, jk) = 1d0 / zmue |
176 |
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177 |
! * 3.1 EQUIVALENT ZENITH ANGLE |
! 3.2 REFLECT./TRANSMISSIVITY DUE TO RAYLEIGH AND AEROSOLS |
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! ----------------------- |
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178 |
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179 |
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zgap = 0d0 |
180 |
zmue = (1.-zc0i(jl,jk))*psec(jl) + zc0i(jl, jk)*1.66 |
zbmu0 = 0.5d0 - 0.75d0 * zgap / zmue |
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prmu0(jl, jk) = 1./zmue |
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! ------------------------------------------------------------------ |
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! * 3.2 REFLECT./TRANSMISSIVITY DUE TO RAYLEIGH AND AEROSOLS |
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! ---------------------------------------------------- |
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zgap = pcgaz(jl, jkm1) |
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zbmu0 = 0.5 - 0.75*zgap/zmue |
|
181 |
zww = ppizaz(jl, jkm1) |
zww = ppizaz(jl, jkm1) |
182 |
zto = ptauaz(jl, jkm1) |
zto = ptauaz(jl, jkm1) |
183 |
zden = 1. + (1.-zww+zbmu0*zww)*zto*zmue + (1-zww)*(1.-zww+2.*zbmu0*zww) & |
zden = 1d0 + (1d0 - zww + zbmu0 * zww) * zto * zmue + (1d0 - zww) & |
184 |
*zto*zto*zmue*zmue |
* (1d0 - zww + 2d0 * zbmu0 * zww) * zto * zto * zmue * zmue |
185 |
pray1(jl, jkm1) = zbmu0*zww*zto*zmue/zden |
pray1(jl, jkm1) = zbmu0 * zww * zto * zmue / zden |
186 |
ptra1(jl, jkm1) = 1./zden |
ptra1(jl, jkm1) = 1d0 / zden |
187 |
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|
188 |
zmu1 = 0.5 |
zmu1 = 0.5d0 |
189 |
zbmu1 = 0.5 - 0.75*zgap*zmu1 |
zbmu1 = 0.5d0 - 0.75d0 * zgap * zmu1 |
190 |
zden1 = 1. + (1.-zww+zbmu1*zww)*zto/zmu1 + (1-zww)*(1.-zww+2.*zbmu1*zww & |
zden1 = 1d0 + (1d0 - zww + zbmu1 * zww) * zto / zmu1 + (1d0 - zww) & |
191 |
)*zto*zto/zmu1/zmu1 |
* (1d0 - zww + 2d0 * zbmu1 * zww & |
192 |
pray2(jl, jkm1) = zbmu1*zww*zto/zmu1/zden1 |
) * zto * zto / zmu1 / zmu1 |
193 |
ptra2(jl, jkm1) = 1./zden1 |
pray2(jl, jkm1) = zbmu1 * zww * zto / zmu1 / zden1 |
194 |
|
ptra2(jl, jkm1) = 1d0 / zden1 |
195 |
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196 |
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prefz(jl, 1, jk) = (pray1(jl, jkm1) + prefz(jl, 1, jkm1) & |
197 |
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* ptra1(jl, jkm1)* ptra2(jl, jkm1) / (1d0 - pray2(jl, jkm1) & |
198 |
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* prefz(jl, 1, jkm1))) |
199 |
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200 |
|
ztr(jl, 1, jkm1) = (ptra1(jl, jkm1) / (1d0 - pray2(jl, jkm1) & |
201 |
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* prefz(jl, 1, jkm1))) |
202 |
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203 |
prefz(jl, 1, jk) = (pray1(jl,jkm1)+prefz(jl,1,jkm1)*ptra1(jl,jkm1)* & |
prefz(jl, 2, jk) = (pray1(jl, jkm1) + prefz(jl, 2, jkm1) & |
204 |
ptra2(jl,jkm1)/(1.-pray2(jl,jkm1)*prefz(jl,1,jkm1))) |
* ptra1(jl, jkm1) * ptra2(jl, jkm1)) |
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ztr(jl, 1, jkm1) = (ptra1(jl,jkm1)/(1.-pray2(jl,jkm1)*prefz(jl,1, & |
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jkm1))) |
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prefz(jl, 2, jk) = (pray1(jl,jkm1)+prefz(jl,2,jkm1)*ptra1(jl,jkm1)* & |
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ptra2(jl,jkm1)) |
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205 |
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206 |
ztr(jl, 2, jkm1) = ptra1(jl, jkm1) |
ztr(jl, 2, jkm1) = ptra1(jl, jkm1) |
207 |
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208 |
END DO |
END DO |
209 |
END DO |
END DO |
210 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
211 |
zmue = (1.-zc0i(jl,1))*psec(jl) + zc0i(jl, 1)*1.66 |
zmue = (1d0 - zc0i(jl, 1)) * psec(jl) + zc0i(jl, 1) * 1.66d0 |
212 |
prmu0(jl, 1) = 1./zmue |
prmu0(jl, 1) = 1d0 / zmue |
213 |
END DO |
END DO |
214 |
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215 |
|
! 3.5 REFLECT./TRANSMISSIVITY BETWEEN SURFACE AND LEVEL |
216 |
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|
217 |
! ------------------------------------------------------------------ |
IF (knu == 1) THEN |
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! * 3.5 REFLECT./TRANSMISSIVITY BETWEEN SURFACE AND LEVEL |
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! ------------------------------------------------- |
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IF (knu==1) THEN |
|
218 |
jaj = 2 |
jaj = 2 |
219 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
220 |
prj(jl, jaj, kflev+1) = 1. |
prj(jl, jaj, kflev + 1) = 1d0 |
221 |
prk(jl, jaj, kflev+1) = prefz(jl, 1, kflev+1) |
prk(jl, jaj, kflev + 1) = prefz(jl, 1, kflev + 1) |
222 |
END DO |
END DO |
223 |
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|
224 |
DO jk = 1, kflev |
DO jk = 1, kflev |
225 |
jkl = kflev + 1 - jk |
jkl = kflev + 1 - jk |
226 |
jklp1 = jkl + 1 |
jklp1 = jkl + 1 |
227 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
228 |
zre11 = prj(jl, jaj, jklp1)*ztr(jl, 1, jkl) |
zre11 = prj(jl, jaj, jklp1) * ztr(jl, 1, jkl) |
229 |
prj(jl, jaj, jkl) = zre11 |
prj(jl, jaj, jkl) = zre11 |
230 |
prk(jl, jaj, jkl) = zre11*prefz(jl, 1, jkl) |
prk(jl, jaj, jkl) = zre11 * prefz(jl, 1, jkl) |
231 |
END DO |
END DO |
232 |
END DO |
END DO |
|
|
|
233 |
ELSE |
ELSE |
|
|
|
234 |
DO jaj = 1, 2 |
DO jaj = 1, 2 |
235 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
236 |
prj(jl, jaj, kflev+1) = 1. |
prj(jl, jaj, kflev + 1) = 1d0 |
237 |
prk(jl, jaj, kflev+1) = prefz(jl, jaj, kflev+1) |
prk(jl, jaj, kflev + 1) = prefz(jl, jaj, kflev + 1) |
238 |
END DO |
END DO |
239 |
|
|
240 |
DO jk = 1, kflev |
DO jk = 1, kflev |
241 |
jkl = kflev + 1 - jk |
jkl = kflev + 1 - jk |
242 |
jklp1 = jkl + 1 |
jklp1 = jkl + 1 |
243 |
DO jl = 1, kdlon |
DO jl = 1, kdlon |
244 |
zre11 = prj(jl, jaj, jklp1)*ztr(jl, jaj, jkl) |
zre11 = prj(jl, jaj, jklp1) * ztr(jl, jaj, jkl) |
245 |
prj(jl, jaj, jkl) = zre11 |
prj(jl, jaj, jkl) = zre11 |
246 |
prk(jl, jaj, jkl) = zre11*prefz(jl, jaj, jkl) |
prk(jl, jaj, jkl) = zre11 * prefz(jl, jaj, jkl) |
247 |
END DO |
END DO |
248 |
END DO |
END DO |
249 |
END DO |
END DO |
|
|
|
250 |
END IF |
END IF |
251 |
|
|
252 |
END SUBROUTINE swclr |
END SUBROUTINE swclr |