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SUBROUTINE LWTT(PGA,PGB,PUU, PTT) |
SUBROUTINE lwtt(pga, pgb, puu, 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 PUU(KDLON,NUA) |
DOUBLE PRECISION puu(kdlon, nua) |
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DOUBLE PRECISION PTT(KDLON,NTRA) |
DOUBLE PRECISION ptt(kdlon, ntra) |
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DOUBLE PRECISION PGA(KDLON,8,2) |
DOUBLE PRECISION pga(kdlon, 8, 2) |
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DOUBLE PRECISION PGB(KDLON,8,2) |
DOUBLE PRECISION pgb(kdlon, 8, 2) |
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C |
|
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C* LOCAL VARIABLES: |
! * LOCAL VARIABLES: |
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C |
|
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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, zsq1, zsq2, zvxy, zuxy |
DOUBLE PRECISION zx, zy, zsq1, zsq2, zvxy, zuxy |
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DOUBLE PRECISION zaercn, zto1, zto2, zxch4, zych4, zxn2o, zyn2o |
DOUBLE PRECISION zaercn, zto1, zto2, zxch4, zych4, zxn2o, zyn2o |
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DOUBLE PRECISION zsqn21, zodn21, zsqh42, zodh42 |
DOUBLE PRECISION zsqn21, zodn21, zsqh42, zodh42 |
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DOUBLE PRECISION zsqh41, zodh41, zsqn22, zodn22, zttf11, zttf12 |
DOUBLE PRECISION zsqh41, zodh41, zsqn22, zodn22, zttf11, zttf12 |
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DOUBLE PRECISION zuu11, zuu12, za11, za12 |
DOUBLE PRECISION zuu11, zuu12, za11, za12 |
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INTEGER jl, ja |
INTEGER jl, ja |
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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(puu(jl,ja)) |
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ZZ =SQRT(PUU(JL,JA)) |
! ZXD(JL,1)=PGB( JL, 1,1) + ZZ(JL, 1)*(PGB( JL, 1,2) + ZZ(JL, 1)) |
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c ZXD(JL,1)=PGB( JL, 1,1) + ZZ(JL, 1)*(PGB( JL, 1,2) + ZZ(JL, 1)) |
! ZXN(JL,1)=PGA( JL, 1,1) + ZZ(JL, 1)*(PGA( JL, 1,2) ) |
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c ZXN(JL,1)=PGA( JL, 1,1) + ZZ(JL, 1)*(PGA( JL, 1,2) ) |
! PTT(JL,1)=ZXN(JL,1)/ZXD(JL,1) |
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c PTT(JL,1)=ZXN(JL,1)/ZXD(JL,1) |
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 |
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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*puu(jl, 10) |
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C |
zpu10 = 112.*zpu |
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ZPU = 0.002 * PUU(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 = puu(jl, 11) |
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ZPU13 = 80.0 * ZPU |
zeu10 = 12.*zeu |
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ZEU = PUU(JL,11) |
zeu11 = 6.25*zeu |
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ZEU10 = 12. * ZEU |
zeu12 = 5.00*zeu |
102 |
ZEU11 = 6.25 * ZEU |
zeu13 = 80.0*zeu |
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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 = puu(jl, 12) |
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C |
zy = puu(jl, 13) |
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ZX = PUU(JL,12) |
zuxy = 4.*zx*zx/(rpialf0*zy) |
109 |
ZY = PUU(JL,13) |
zsq1 = sqrt(1.+o1h*zuxy) - 1. |
110 |
ZUXY = 4. * ZX * ZX / (RPIALF0 * ZY) |
zsq2 = sqrt(1.+o2h*zuxy) - 1. |
111 |
ZSQ1 = SQRT(1. + O1H * ZUXY ) - 1. |
zvxy = rpialf0*zy/(2.*zx) |
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ZSQ2 = SQRT(1. + O2H * ZUXY ) - 1. |
zaercn = puu(jl, 17) + zeu12 + zpu12 |
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ZVXY = RPIALF0 * ZY / (2. * ZX) |
zto1 = exp(-zvxy*zsq1-zaercn) |
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ZAERCN = PUU(JL,17) + ZEU12 + ZPU12 |
zto2 = exp(-zvxy*zsq2-zaercn) |
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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 |
119 |
C |
|
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C* CH4 IN INTERVAL 800-970 + 1110-1250 CM-1 |
! NEXOTIC=1 |
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C |
! IF (NEXOTIC.EQ.1) THEN |
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c NEXOTIC=1 |
zxch4 = puu(jl, 19) |
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c IF (NEXOTIC.EQ.1) THEN |
zych4 = puu(jl, 20) |
124 |
ZXCH4 = PUU(JL,19) |
zuxy = 4.*zxch4*zxch4/(0.103*zych4) |
125 |
ZYCH4 = PUU(JL,20) |
zsqh41 = sqrt(1.+33.7*zuxy) - 1. |
126 |
ZUXY = 4. * ZXCH4*ZXCH4/(0.103*ZYCH4) |
zvxy = 0.103*zych4/(2.*zxch4) |
127 |
ZSQH41 = SQRT(1. + 33.7 * ZUXY) - 1. |
zodh41 = zvxy*zsqh41 |
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ZVXY = 0.103 * ZYCH4 / (2. * ZXCH4) |
|
129 |
ZODH41 = ZVXY * ZSQH41 |
! * N2O IN INTERVAL 800-970 + 1110-1250 CM-1 |
130 |
C |
|
131 |
C* N2O IN INTERVAL 800-970 + 1110-1250 CM-1 |
zxn2o = puu(jl, 21) |
132 |
C |
zyn2o = puu(jl, 22) |
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ZXN2O = PUU(JL,21) |
zuxy = 4.*zxn2o*zxn2o/(0.416*zyn2o) |
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ZYN2O = PUU(JL,22) |
zsqn21 = sqrt(1.+21.3*zuxy) - 1. |
135 |
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 |
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ZVXY = 0.416 * ZYN2O / (2. * ZXN2O) |
|
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ZODN21 = ZVXY * ZSQN21 |
! * CH4 IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
139 |
C |
|
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C* CH4 IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
zuxy = 4.*zxch4*zxch4/(0.113*zych4) |
141 |
C |
zsqh42 = sqrt(1.+400.*zuxy) - 1. |
142 |
ZUXY = 4. * ZXCH4*ZXCH4/(0.113*ZYCH4) |
zvxy = 0.113*zych4/(2.*zxch4) |
143 |
ZSQH42 = SQRT(1. + 400. * ZUXY) - 1. |
zodh42 = zvxy*zsqh42 |
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ZVXY = 0.113 * ZYCH4 / (2. * ZXCH4) |
|
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ZODH42 = ZVXY * ZSQH42 |
! * N2O IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
146 |
C |
|
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C* N2O IN INTERVAL 1250-1450 + 1880-2820 CM-1 |
zuxy = 4.*zxn2o*zxn2o/(0.197*zyn2o) |
148 |
C |
zsqn22 = sqrt(1.+2000.*zuxy) - 1. |
149 |
ZUXY = 4. * ZXN2O*ZXN2O/(0.197*ZYN2O) |
zvxy = 0.197*zyn2o/(2.*zxn2o) |
150 |
ZSQN22 = SQRT(1. + 2000. * ZUXY) - 1. |
zodn22 = zvxy*zsqn22 |
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ZVXY = 0.197 * ZYN2O / (2. * ZXN2O) |
|
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ZODN22 = ZVXY * ZSQN22 |
! * CFC-11 IN INTERVAL 800-970 + 1110-1250 CM-1 |
153 |
C |
|
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C* CFC-11 IN INTERVAL 800-970 + 1110-1250 CM-1 |
za11 = 2.*puu(jl, 23)*4.404E+05 |
155 |
C |
zttf11 = 1. - za11*0.003225 |
156 |
ZA11 = 2. * PUU(JL,23) * 4.404E+05 |
|
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ZTTF11 = 1. - ZA11 * 0.003225 |
! * CFC-12 IN INTERVAL 800-970 + 1110-1250 CM-1 |
158 |
C |
|
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C* CFC-12 IN INTERVAL 800-970 + 1110-1250 CM-1 |
za12 = 2.*puu(jl, 24)*6.7435E+05 |
160 |
C |
zttf12 = 1. - za12*0.003225 |
161 |
ZA12 = 2. * PUU(JL,24) * 6.7435E+05 |
|
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ZTTF12 = 1. - ZA12 * 0.003225 |
zuu11 = -puu(jl, 15) - zeu10 - zpu10 |
163 |
C |
zuu12 = -puu(jl, 16) - zeu11 - zpu11 - zodh41 - zodn21 |
164 |
ZUU11 = - PUU(JL,15) - ZEU10 - ZPU10 |
ptt(jl, 10) = exp(-puu(jl,14)) |
165 |
ZUU12 = - PUU(JL,16) - ZEU11 - ZPU11 - ZODH41 - ZODN21 |
ptt(jl, 11) = exp(zuu11) |
166 |
PTT(JL,10) = EXP( - PUU(JL,14) ) |
ptt(jl, 12) = exp(zuu12)*zttf11*zttf12 |
167 |
PTT(JL,11) = EXP( ZUU11 ) |
ptt(jl, 13) = 0.7554*zto1 + 0.2446*zto2 |
168 |
PTT(JL,12) = EXP( ZUU12 ) * ZTTF11 * ZTTF12 |
ptt(jl, 14) = ptt(jl, 10)*exp(-zeu13-zpu13) |
169 |
PTT(JL,13) = 0.7554 * ZTO1 + 0.2446 * ZTO2 |
ptt(jl, 15) = exp(-puu(jl,14)-zodh42-zodn22) |
170 |
PTT(JL,14) = PTT(JL,10) * EXP( - ZEU13 - ZPU13 ) |
END DO |
171 |
PTT(JL,15) = EXP ( - PUU(JL,14) - ZODH42 - ZODN22 ) |
|
172 |
201 CONTINUE |
RETURN |
173 |
C |
END SUBROUTINE lwtt |
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RETURN |
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END |
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