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module sw1s_m |
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|
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IMPLICIT NONE |
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|
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contains |
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|
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SUBROUTINE sw1s(knu, palbd, palbp, pcg, pcld, pclear, pdsig, pomega, poz, & |
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prmu, psec, ptau, pud, pfd, pfu) |
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|
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USE dimens_m |
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USE dimphy |
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USE raddim |
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use swclr_m, only: swclr |
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use swr_m, only: swr |
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|
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! ------------------------------------------------------------------ |
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! PURPOSE. |
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! -------- |
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|
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! THIS ROUTINE COMPUTES THE SHORTWAVE RADIATION FLUXES IN TWO |
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! SPECTRAL INTERVALS FOLLOWING FOUQUART AND BONNEL (1980). |
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|
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! METHOD. |
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! ------- |
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|
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! 1. COMPUTES UPWARD AND DOWNWARD FLUXES CORRESPONDING TO |
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! CONTINUUM SCATTERING |
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! 2. MULTIPLY BY OZONE TRANSMISSION FUNCTION |
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|
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! REFERENCE. |
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! ---------- |
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|
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! SEE RADIATION'S PART OF THE ECMWF RESEARCH DEPARTMENT |
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! DOCUMENTATION, AND FOUQUART AND BONNEL (1980) |
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|
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! AUTHOR. |
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! ------- |
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! JEAN-JACQUES MORCRETTE *ECMWF* |
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|
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! MODIFICATIONS. |
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! -------------- |
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! ORIGINAL : 89-07-14 |
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! 94-11-15 J.-J. MORCRETTE DIRECT/DIFFUSE ALBEDO |
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! ------------------------------------------------------------------ |
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|
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! * ARGUMENTS: |
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|
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INTEGER knu |
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DOUBLE PRECISION palbd(kdlon, 2) |
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DOUBLE PRECISION palbp(kdlon, 2) |
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DOUBLE PRECISION pcg(kdlon, 2, kflev) |
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DOUBLE PRECISION pcld(kdlon, kflev) |
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DOUBLE PRECISION pclear(kdlon) |
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DOUBLE PRECISION pdsig(kdlon, kflev) |
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DOUBLE PRECISION pomega(kdlon, 2, kflev) |
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DOUBLE PRECISION poz(kdlon, kflev) |
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DOUBLE PRECISION prmu(kdlon) |
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DOUBLE PRECISION psec(kdlon) |
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DOUBLE PRECISION ptau(kdlon, 2, kflev) |
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DOUBLE PRECISION pud(kdlon, 5, kflev+1) |
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|
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DOUBLE PRECISION pfd(kdlon, kflev+1) |
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DOUBLE PRECISION pfu(kdlon, kflev+1) |
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|
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! * LOCAL VARIABLES: |
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|
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INTEGER iind(4) |
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|
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DOUBLE PRECISION zcgaz(kdlon, kflev) |
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DOUBLE PRECISION zdiff(kdlon) |
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DOUBLE PRECISION zdirf(kdlon) |
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DOUBLE PRECISION zpizaz(kdlon, kflev) |
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DOUBLE PRECISION zrayl(kdlon) |
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DOUBLE PRECISION zray1(kdlon, kflev+1) |
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DOUBLE PRECISION zray2(kdlon, kflev+1) |
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DOUBLE PRECISION zrefz(kdlon, 2, kflev+1) |
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DOUBLE PRECISION zrj(kdlon, 6, kflev+1) |
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DOUBLE PRECISION zrj0(kdlon, 6, kflev+1) |
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DOUBLE PRECISION zrk(kdlon, 6, kflev+1) |
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DOUBLE PRECISION zrk0(kdlon, 6, kflev+1) |
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DOUBLE PRECISION zrmue(kdlon, kflev+1) |
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DOUBLE PRECISION zrmu0(kdlon, kflev+1) |
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DOUBLE PRECISION zr(kdlon, 4) |
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DOUBLE PRECISION ztauaz(kdlon, kflev) |
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DOUBLE PRECISION ztra1(kdlon, kflev+1) |
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DOUBLE PRECISION ztra2(kdlon, kflev+1) |
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DOUBLE PRECISION zw(kdlon, 4) |
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|
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INTEGER jl, jk, k, jaj, ikm1, ikl |
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|
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! Prescribed Data: |
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|
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DOUBLE PRECISION rsun(2) |
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SAVE rsun |
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DOUBLE PRECISION rray(2, 6) |
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SAVE rray |
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DATA rsun(1)/0.441676d0/ |
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DATA rsun(2)/0.558324d0/ |
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DATA (rray(1,k), k=1, 6)/.428937d-01, .890743d+00, -.288555d+01, & |
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.522744d+01, -.469173d+01, .161645d+01/ |
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DATA (rray(2,k), k=1, 6)/.697200d-02, .173297d-01, -.850903d-01, & |
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.248261d+00, -.302031d+00, .129662d+00/ |
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! ------------------------------------------------------------------ |
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|
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! * 1. FIRST SPECTRAL INTERVAL (0.25-0.68 MICRON) |
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! ----------------------- ------------------ |
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|
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|
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|
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! * 1.1 OPTICAL THICKNESS FOR RAYLEIGH SCATTERING |
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! ----------------------------------------- |
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|
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|
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DO jl = 1, kdlon |
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zrayl(jl) = rray(knu, 1) + prmu(jl)*(rray(knu,2)+prmu(jl)*(rray(knu, & |
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3)+prmu(jl)*(rray(knu,4)+prmu(jl)*(rray(knu,5)+prmu(jl)*rray(knu,6))))) |
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END DO |
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|
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|
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! ------------------------------------------------------------------ |
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|
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! * 2. CONTINUUM SCATTERING CALCULATIONS |
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! --------------------------------- |
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|
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|
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! * 2.1 CLEAR-SKY FRACTION OF THE COLUMN |
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! -------------------------------- |
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|
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|
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CALL swclr(knu, palbp, pdsig, zrayl, psec, zpizaz, zray1, zray2, zrefz, & |
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zrj0, zrk0, zrmu0, ztauaz, ztra1, ztra2) |
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|
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|
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! * 2.2 CLOUDY FRACTION OF THE COLUMN |
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! ----------------------------- |
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|
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zcgaz = 0d0 |
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CALL swr(knu, palbd, pcg, pcld, pomega, psec, ptau, zcgaz, & |
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zpizaz, zray1, zray2, zrefz, zrj, zrk, zrmue, ztauaz, ztra1, ztra2) |
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|
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|
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! ------------------------------------------------------------------ |
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|
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! * 3. OZONE ABSORPTION |
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! ---------------- |
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|
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|
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iind(1) = 1 |
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iind(2) = 3 |
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iind(3) = 1 |
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iind(4) = 3 |
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|
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|
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! * 3.1 DOWNWARD FLUXES |
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! --------------- |
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|
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|
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jaj = 2 |
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|
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DO jl = 1, kdlon |
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zw(jl, 1) = 0. |
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zw(jl, 2) = 0. |
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zw(jl, 3) = 0. |
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zw(jl, 4) = 0. |
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pfd(jl, kflev+1) = ((1.-pclear(jl))*zrj(jl,jaj,kflev+1)+pclear(jl)*zrj0( & |
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jl,jaj,kflev+1))*rsun(knu) |
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END DO |
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DO jk = 1, kflev |
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ikl = kflev + 1 - jk |
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DO jl = 1, kdlon |
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zw(jl, 1) = zw(jl, 1) + pud(jl, 1, ikl)/zrmue(jl, ikl) |
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zw(jl, 2) = zw(jl, 2) + poz(jl, ikl)/zrmue(jl, ikl) |
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zw(jl, 3) = zw(jl, 3) + pud(jl, 1, ikl)/zrmu0(jl, ikl) |
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zw(jl, 4) = zw(jl, 4) + poz(jl, ikl)/zrmu0(jl, ikl) |
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END DO |
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|
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CALL swtt1(knu, 4, iind, zw, zr) |
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|
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DO jl = 1, kdlon |
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zdiff(jl) = zr(jl, 1)*zr(jl, 2)*zrj(jl, jaj, ikl) |
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zdirf(jl) = zr(jl, 3)*zr(jl, 4)*zrj0(jl, jaj, ikl) |
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pfd(jl, ikl) = ((1.-pclear(jl))*zdiff(jl)+pclear(jl)*zdirf(jl))* & |
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rsun(knu) |
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END DO |
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END DO |
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|
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|
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! * 3.2 UPWARD FLUXES |
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! ------------- |
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|
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|
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DO jl = 1, kdlon |
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pfu(jl, 1) = ((1.-pclear(jl))*zdiff(jl)*palbd(jl,knu)+pclear(jl)*zdirf(jl & |
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)*palbp(jl,knu))*rsun(knu) |
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END DO |
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|
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DO jk = 2, kflev + 1 |
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ikm1 = jk - 1 |
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DO jl = 1, kdlon |
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zw(jl, 1) = zw(jl, 1) + pud(jl, 1, ikm1)*1.66 |
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zw(jl, 2) = zw(jl, 2) + poz(jl, ikm1)*1.66 |
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zw(jl, 3) = zw(jl, 3) + pud(jl, 1, ikm1)*1.66 |
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zw(jl, 4) = zw(jl, 4) + poz(jl, ikm1)*1.66 |
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END DO |
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|
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CALL swtt1(knu, 4, iind, zw, zr) |
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|
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DO jl = 1, kdlon |
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zdiff(jl) = zr(jl, 1)*zr(jl, 2)*zrk(jl, jaj, jk) |
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zdirf(jl) = zr(jl, 3)*zr(jl, 4)*zrk0(jl, jaj, jk) |
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pfu(jl, jk) = ((1.-pclear(jl))*zdiff(jl)+pclear(jl)*zdirf(jl))* & |
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rsun(knu) |
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END DO |
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END DO |
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|
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END SUBROUTINE sw1s |
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|
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end module sw1s_m |
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