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SUBROUTINE LWTTM(PGA,PGB,PUU1,PUU2, PTT) |
SUBROUTINE lwttm(pga, pgb, puu1, puu2, ptt) |
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use dimens_m |
USE dimens_m |
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use dimphy |
USE dimphy |
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use raddim |
USE raddim |
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use raddimlw |
USE raddimlw |
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IMPLICIT none |
IMPLICIT NONE |
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C |
|
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C ------------------------------------------------------------------ |
! ------------------------------------------------------------------ |
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C PURPOSE. |
! PURPOSE. |
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C -------- |
! -------- |
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C THIS ROUTINE COMPUTES THE TRANSMISSION FUNCTIONS FOR ALL THE |
! THIS ROUTINE COMPUTES THE TRANSMISSION FUNCTIONS FOR ALL THE |
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C ABSORBERS (H2O, UNIFORMLY MIXED GASES, AND O3) IN ALL SIX SPECTRAL |
! ABSORBERS (H2O, UNIFORMLY MIXED GASES, AND O3) IN ALL SIX SPECTRAL |
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C INTERVALS. |
! INTERVALS. |
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C |
|
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C METHOD. |
! METHOD. |
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C ------- |
! ------- |
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C |
|
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C 1. TRANSMISSION FUNCTION BY H2O AND UNIFORMLY MIXED GASES ARE |
! 1. TRANSMISSION FUNCTION BY H2O AND UNIFORMLY MIXED GASES ARE |
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C COMPUTED USING PADE APPROXIMANTS AND HORNER'S ALGORITHM. |
! COMPUTED USING PADE APPROXIMANTS AND HORNER'S ALGORITHM. |
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C 2. TRANSMISSION BY O3 IS EVALUATED WITH MALKMUS'S BAND MODEL. |
! 2. TRANSMISSION BY O3 IS EVALUATED WITH MALKMUS'S BAND MODEL. |
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C 3. TRANSMISSION BY H2O CONTINUUM AND AEROSOLS FOLLOW AN |
! 3. TRANSMISSION BY H2O CONTINUUM AND AEROSOLS FOLLOW AN |
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C A SIMPLE EXPONENTIAL DECREASE WITH ABSORBER AMOUNT. |
! A SIMPLE EXPONENTIAL DECREASE WITH ABSORBER AMOUNT. |
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C |
|
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C REFERENCE. |
! REFERENCE. |
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C ---------- |
! ---------- |
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C |
|
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C SEE RADIATION'S PART OF THE MODEL'S DOCUMENTATION AND |
! SEE RADIATION'S PART OF THE MODEL'S DOCUMENTATION AND |
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C ECMWF RESEARCH DEPARTMENT DOCUMENTATION OF THE IFS |
! ECMWF RESEARCH DEPARTMENT DOCUMENTATION OF THE IFS |
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C |
|
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C AUTHOR. |
! AUTHOR. |
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C ------- |
! ------- |
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C JEAN-JACQUES MORCRETTE *ECMWF* |
! JEAN-JACQUES MORCRETTE *ECMWF* |
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C |
|
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C MODIFICATIONS. |
! MODIFICATIONS. |
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C -------------- |
! -------------- |
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C ORIGINAL : 88-12-15 |
! ORIGINAL : 88-12-15 |
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C |
|
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C----------------------------------------------------------------------- |
! ----------------------------------------------------------------------- |
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DOUBLE PRECISION O1H, O2H |
DOUBLE PRECISION o1h, o2h |
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PARAMETER (O1H=2230.) |
PARAMETER (o1h=2230.) |
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PARAMETER (O2H=100.) |
PARAMETER (o2h=100.) |
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DOUBLE PRECISION RPIALF0 |
DOUBLE PRECISION rpialf0 |
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PARAMETER (RPIALF0=2.0) |
PARAMETER (rpialf0=2.0) |
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C |
|
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C* ARGUMENTS: |
! * ARGUMENTS: |
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C |
|
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DOUBLE PRECISION PGA(KDLON,8,2) ! PADE APPROXIMANTS |
DOUBLE PRECISION pga(kdlon, 8, 2) ! PADE APPROXIMANTS |
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DOUBLE PRECISION PGB(KDLON,8,2) ! PADE APPROXIMANTS |
DOUBLE PRECISION pgb(kdlon, 8, 2) ! PADE APPROXIMANTS |
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DOUBLE PRECISION PUU1(KDLON,NUA) ! ABSORBER AMOUNTS FROM TOP TO LEVEL 1 |
DOUBLE PRECISION puu1(kdlon, nua) ! ABSORBER AMOUNTS FROM TOP TO LEVEL 1 |
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DOUBLE PRECISION PUU2(KDLON,NUA) ! ABSORBER AMOUNTS FROM TOP TO LEVEL 2 |
DOUBLE PRECISION puu2(kdlon, nua) ! ABSORBER AMOUNTS FROM TOP TO LEVEL 2 |
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DOUBLE PRECISION PTT(KDLON,NTRA) ! TRANSMISSION FUNCTIONS |
DOUBLE PRECISION ptt(kdlon, ntra) ! TRANSMISSION FUNCTIONS |
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C |
|
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C* LOCAL VARIABLES: |
! * LOCAL VARIABLES: |
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C |
|
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INTEGER ja, jl |
INTEGER ja, jl |
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DOUBLE PRECISION zz, zxd, zxn |
DOUBLE PRECISION zz, zxd, zxn |
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DOUBLE PRECISION zpu, zpu10, zpu11, zpu12, zpu13 |
DOUBLE PRECISION zpu, zpu10, zpu11, zpu12, zpu13 |
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DOUBLE PRECISION zeu, zeu10, zeu11, zeu12, zeu13 |
DOUBLE PRECISION zeu, zeu10, zeu11, zeu12, zeu13 |
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DOUBLE PRECISION zx, zy, zuxy, zsq1, zsq2, zvxy, zaercn, zto1 |
DOUBLE PRECISION zx, zy, zuxy, zsq1, zsq2, zvxy, zaercn, zto1 |
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DOUBLE PRECISION zto2 |
DOUBLE PRECISION zto2 |
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DOUBLE PRECISION zxch4, zych4, zsqh41, zodh41 |
DOUBLE PRECISION zxch4, zych4, zsqh41, zodh41 |
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DOUBLE PRECISION zxn2o, zyn2o, zsqn21, zodn21, zsqh42, zodh42 |
DOUBLE PRECISION zxn2o, zyn2o, zsqn21, zodn21, zsqh42, zodh42 |
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DOUBLE PRECISION zsqn22, zodn22, za11, zttf11, za12, zttf12 |
DOUBLE PRECISION zsqn22, zodn22, za11, zttf11, za12, zttf12 |
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DOUBLE PRECISION zuu11, zuu12 |
DOUBLE PRECISION zuu11, zuu12 |
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C ------------------------------------------------------------------ |
! ------------------------------------------------------------------ |
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C |
|
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C* 1. HORNER'S ALGORITHM FOR H2O AND CO2 TRANSMISSION |
! * 1. HORNER'S ALGORITHM FOR H2O AND CO2 TRANSMISSION |
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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 |
DO ja = 1, 8 |
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DO 130 JA = 1 , 8 |
DO jl = 1, kdlon |
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DO 120 JL = 1, KDLON |
zz = sqrt(puu1(jl,ja)-puu2(jl,ja)) |
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ZZ =SQRT(PUU1(JL,JA) - PUU2(JL,JA)) |
zxd = pgb(jl, ja, 1) + zz*(pgb(jl,ja,2)+zz) |
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ZXD =PGB( JL,JA,1) + ZZ *(PGB( JL,JA,2) + ZZ ) |
zxn = pga(jl, ja, 1) + zz*(pga(jl,ja,2)) |
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ZXN =PGA( JL,JA,1) + ZZ *(PGA( JL,JA,2) ) |
ptt(jl, ja) = zxn/zxd |
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PTT(JL,JA)=ZXN /ZXD |
END DO |
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120 CONTINUE |
END DO |
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130 CONTINUE |
|
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C |
! ------------------------------------------------------------------ |
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C ------------------------------------------------------------------ |
|
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C |
! * 2. CONTINUUM, OZONE AND AEROSOL TRANSMISSION FUNCTIONS |
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C* 2. CONTINUUM, OZONE AND AEROSOL TRANSMISSION FUNCTIONS |
! --------------------------------------------------- |
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C --------------------------------------------------- |
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C |
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200 CONTINUE |
DO jl = 1, kdlon |
88 |
C |
ptt(jl, 9) = ptt(jl, 8) |
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DO 201 JL = 1, KDLON |
|
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PTT(JL, 9) = PTT(JL, 8) |
! - CONTINUUM ABSORPTION: E- AND P-TYPE |
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C |
|
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C- CONTINUUM ABSORPTION: E- AND P-TYPE |
zpu = 0.002*(puu1(jl,10)-puu2(jl,10)) |
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C |
zpu10 = 112.*zpu |
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ZPU = 0.002 * (PUU1(JL,10) - PUU2(JL,10)) |
zpu11 = 6.25*zpu |
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ZPU10 = 112. * ZPU |
zpu12 = 5.00*zpu |
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ZPU11 = 6.25 * ZPU |
zpu13 = 80.0*zpu |
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ZPU12 = 5.00 * ZPU |
zeu = (puu1(jl,11)-puu2(jl,11)) |
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ZPU13 = 80.0 * ZPU |
zeu10 = 12.*zeu |
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ZEU = (PUU1(JL,11) - PUU2(JL,11)) |
zeu11 = 6.25*zeu |
100 |
ZEU10 = 12. * ZEU |
zeu12 = 5.00*zeu |
101 |
ZEU11 = 6.25 * ZEU |
zeu13 = 80.0*zeu |
102 |
ZEU12 = 5.00 * ZEU |
|
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ZEU13 = 80.0 * ZEU |
! - OZONE ABSORPTION |
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C |
|
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C- OZONE ABSORPTION |
zx = (puu1(jl,12)-puu2(jl,12)) |
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C |
zy = (puu1(jl,13)-puu2(jl,13)) |
107 |
ZX = (PUU1(JL,12) - PUU2(JL,12)) |
zuxy = 4.*zx*zx/(rpialf0*zy) |
108 |
ZY = (PUU1(JL,13) - PUU2(JL,13)) |
zsq1 = sqrt(1.+o1h*zuxy) - 1. |
109 |
ZUXY = 4. * ZX * ZX / (RPIALF0 * ZY) |
zsq2 = sqrt(1.+o2h*zuxy) - 1. |
110 |
ZSQ1 = SQRT(1. + O1H * ZUXY ) - 1. |
zvxy = rpialf0*zy/(2.*zx) |
111 |
ZSQ2 = SQRT(1. + O2H * ZUXY ) - 1. |
zaercn = (puu1(jl,17)-puu2(jl,17)) + zeu12 + zpu12 |
112 |
ZVXY = RPIALF0 * ZY / (2. * ZX) |
zto1 = exp(-zvxy*zsq1-zaercn) |
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ZAERCN = (PUU1(JL,17) -PUU2(JL,17)) + ZEU12 + ZPU12 |
zto2 = exp(-zvxy*zsq2-zaercn) |
114 |
ZTO1 = EXP( - ZVXY * ZSQ1 - ZAERCN ) |
|
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ZTO2 = EXP( - ZVXY * ZSQ2 - ZAERCN ) |
! -- TRACE GASES (CH4, N2O, CFC-11, CFC-12) |
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C |
|
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C-- TRACE GASES (CH4, N2O, CFC-11, CFC-12) |
! * CH4 IN INTERVAL 800-970 + 1110-1250 CM-1 |
118 |
C |
|
119 |
C* CH4 IN INTERVAL 800-970 + 1110-1250 CM-1 |
zxch4 = (puu1(jl,19)-puu2(jl,19)) |
120 |
C |
zych4 = (puu1(jl,20)-puu2(jl,20)) |
121 |
ZXCH4 = (PUU1(JL,19) - PUU2(JL,19)) |
zuxy = 4.*zxch4*zxch4/(0.103*zych4) |
122 |
ZYCH4 = (PUU1(JL,20) - PUU2(JL,20)) |
zsqh41 = sqrt(1.+33.7*zuxy) - 1. |
123 |
ZUXY = 4. * ZXCH4*ZXCH4/(0.103*ZYCH4) |
zvxy = 0.103*zych4/(2.*zxch4) |
124 |
ZSQH41 = SQRT(1. + 33.7 * ZUXY) - 1. |
zodh41 = zvxy*zsqh41 |
125 |
ZVXY = 0.103 * ZYCH4 / (2. * ZXCH4) |
|
126 |
ZODH41 = ZVXY * ZSQH41 |
! * N2O IN INTERVAL 800-970 + 1110-1250 CM-1 |
127 |
C |
|
128 |
C* N2O IN INTERVAL 800-970 + 1110-1250 CM-1 |
zxn2o = (puu1(jl,21)-puu2(jl,21)) |
129 |
C |
zyn2o = (puu1(jl,22)-puu2(jl,22)) |
130 |
ZXN2O = (PUU1(JL,21) - PUU2(JL,21)) |
zuxy = 4.*zxn2o*zxn2o/(0.416*zyn2o) |
131 |
ZYN2O = (PUU1(JL,22) - PUU2(JL,22)) |
zsqn21 = sqrt(1.+21.3*zuxy) - 1. |
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ZUXY = 4. * ZXN2O*ZXN2O/(0.416*ZYN2O) |
zvxy = 0.416*zyn2o/(2.*zxn2o) |
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ZSQN21 = SQRT(1. + 21.3 * ZUXY) - 1. |
zodn21 = zvxy*zsqn21 |
134 |
ZVXY = 0.416 * ZYN2O / (2. * ZXN2O) |
|
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ZODN21 = ZVXY * ZSQN21 |
! * CH4 IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
136 |
C |
|
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C* CH4 IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
zuxy = 4.*zxch4*zxch4/(0.113*zych4) |
138 |
C |
zsqh42 = sqrt(1.+400.*zuxy) - 1. |
139 |
ZUXY = 4. * ZXCH4*ZXCH4/(0.113*ZYCH4) |
zvxy = 0.113*zych4/(2.*zxch4) |
140 |
ZSQH42 = SQRT(1. + 400. * ZUXY) - 1. |
zodh42 = zvxy*zsqh42 |
141 |
ZVXY = 0.113 * ZYCH4 / (2. * ZXCH4) |
|
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ZODH42 = ZVXY * ZSQH42 |
! * N2O IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
143 |
C |
|
144 |
C* N2O IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
zuxy = 4.*zxn2o*zxn2o/(0.197*zyn2o) |
145 |
C |
zsqn22 = sqrt(1.+2000.*zuxy) - 1. |
146 |
ZUXY = 4. * ZXN2O*ZXN2O/(0.197*ZYN2O) |
zvxy = 0.197*zyn2o/(2.*zxn2o) |
147 |
ZSQN22 = SQRT(1. + 2000. * ZUXY) - 1. |
zodn22 = zvxy*zsqn22 |
148 |
ZVXY = 0.197 * ZYN2O / (2. * ZXN2O) |
|
149 |
ZODN22 = ZVXY * ZSQN22 |
! * CFC-11 IN INTERVAL 800-970 + 1110-1250 CM-1 |
150 |
C |
|
151 |
C* CFC-11 IN INTERVAL 800-970 + 1110-1250 CM-1 |
za11 = (puu1(jl,23)-puu2(jl,23))*4.404E+05 |
152 |
C |
zttf11 = 1. - za11*0.003225 |
153 |
ZA11 = (PUU1(JL,23) - PUU2(JL,23)) * 4.404E+05 |
|
154 |
ZTTF11 = 1. - ZA11 * 0.003225 |
! * CFC-12 IN INTERVAL 800-970 + 1110-1250 CM-1 |
155 |
C |
|
156 |
C* CFC-12 IN INTERVAL 800-970 + 1110-1250 CM-1 |
za12 = (puu1(jl,24)-puu2(jl,24))*6.7435E+05 |
157 |
C |
zttf12 = 1. - za12*0.003225 |
158 |
ZA12 = (PUU1(JL,24) - PUU2(JL,24)) * 6.7435E+05 |
|
159 |
ZTTF12 = 1. - ZA12 * 0.003225 |
zuu11 = -(puu1(jl,15)-puu2(jl,15)) - zeu10 - zpu10 |
160 |
C |
zuu12 = -(puu1(jl,16)-puu2(jl,16)) - zeu11 - zpu11 - zodh41 - zodn21 |
161 |
ZUU11 = - (PUU1(JL,15) - PUU2(JL,15)) - ZEU10 - ZPU10 |
ptt(jl, 10) = exp(-(puu1(jl,14)-puu2(jl,14))) |
162 |
ZUU12 = - (PUU1(JL,16) - PUU2(JL,16)) - ZEU11 - ZPU11 - |
ptt(jl, 11) = exp(zuu11) |
163 |
S ZODH41 - ZODN21 |
ptt(jl, 12) = exp(zuu12)*zttf11*zttf12 |
164 |
PTT(JL,10) = EXP( - (PUU1(JL,14)- PUU2(JL,14)) ) |
ptt(jl, 13) = 0.7554*zto1 + 0.2446*zto2 |
165 |
PTT(JL,11) = EXP( ZUU11 ) |
ptt(jl, 14) = ptt(jl, 10)*exp(-zeu13-zpu13) |
166 |
PTT(JL,12) = EXP( ZUU12 ) * ZTTF11 * ZTTF12 |
ptt(jl, 15) = exp(-(puu1(jl,14)-puu2(jl,14))-zodh42-zodn22) |
167 |
PTT(JL,13) = 0.7554 * ZTO1 + 0.2446 * ZTO2 |
END DO |
168 |
PTT(JL,14) = PTT(JL,10) * EXP( - ZEU13 - ZPU13 ) |
|
169 |
PTT(JL,15) = EXP ( - (PUU1(JL,14) - PUU2(JL,14)) - ZODH42-ZODN22 ) |
RETURN |
170 |
201 CONTINUE |
END SUBROUTINE lwttm |
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C |
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RETURN |
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END |
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