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module lwvn_m |
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IMPLICIT NONE |
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|
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contains |
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SUBROUTINE lwvn(kuaer, pabcu, pdbsl, pga, pgb, padjd, padju, pcntrb, pdbdt) |
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USE dimensions |
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USE dimphy |
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USE raddim |
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USE raddimlw |
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! ----------------------------------------------------------------------- |
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! PURPOSE. |
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! -------- |
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! CARRIES OUT THE VERTICAL INTEGRATION ON NEARBY LAYERS |
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! TO GIVE LONGWAVE FLUXES OR RADIANCES |
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|
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! METHOD. |
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! ------- |
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|
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! 1. PERFORMS THE VERTICAL INTEGRATION CORRESPONDING TO THE |
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! CONTRIBUTIONS OF THE ADJACENT LAYERS USING A GAUSSIAN QUADRATURE |
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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 MODEL'S DOCUMENTATION AND |
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! ECMWF RESEARCH DEPARTMENT DOCUMENTATION OF THE IFS |
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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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! ----------------------------------------------------------------------- |
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|
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! * ARGUMENTS: |
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|
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INTEGER kuaer |
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|
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DOUBLE PRECISION pabcu(kdlon, nua, 3*kflev+1) ! ABSORBER AMOUNTS |
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DOUBLE PRECISION pdbsl(kdlon, ninter, kflev*2) ! SUB-LAYER PLANCK FUNCTION GRADIENT |
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DOUBLE PRECISION pga(kdlon, 8, 2, kflev) ! PADE APPROXIMANTS |
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DOUBLE PRECISION pgb(kdlon, 8, 2, kflev) ! PADE APPROXIMANTS |
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|
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DOUBLE PRECISION padjd(kdlon, kflev+1) ! CONTRIBUTION OF ADJACENT LAYERS |
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DOUBLE PRECISION padju(kdlon, kflev+1) ! CONTRIBUTION OF ADJACENT LAYERS |
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DOUBLE PRECISION pcntrb(kdlon, kflev+1, kflev+1) ! CLEAR-SKY ENERGY EXCHANGE MATRIX |
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DOUBLE PRECISION pdbdt(kdlon, ninter, kflev) ! LAYER PLANCK FUNCTION GRADIENT |
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|
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! * LOCAL ARRAYS: |
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|
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DOUBLE PRECISION zglayd(kdlon) |
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DOUBLE PRECISION zglayu(kdlon) |
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DOUBLE PRECISION ztt(kdlon, ntra) |
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DOUBLE PRECISION zuu(kdlon, nua) |
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|
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INTEGER jk, jl, ja, im12, ind, inu, ixu, jg |
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INTEGER ixd, ibs, idd, imu, jk1, jk2, jnu |
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DOUBLE PRECISION zwtr |
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|
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! * Data Block: |
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|
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DOUBLE PRECISION wg1(2) |
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SAVE wg1 |
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DATA (wg1(jk), jk=1, 2)/1d0, 1d0/ |
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! ----------------------------------------------------------------------- |
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|
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! * 1. INITIALIZATION |
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! -------------- |
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|
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|
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! * 1.1 INITIALIZE LAYER CONTRIBUTIONS |
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! ------------------------------ |
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|
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|
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DO jk = 1, kflev + 1 |
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DO jl = 1, kdlon |
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padjd(jl, jk) = 0. |
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padju(jl, jk) = 0. |
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END DO |
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END DO |
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|
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! * 1.2 INITIALIZE TRANSMISSION FUNCTIONS |
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! --------------------------------- |
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|
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|
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DO ja = 1, ntra |
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DO jl = 1, kdlon |
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ztt(jl, ja) = 1.0 |
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END DO |
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END DO |
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|
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DO ja = 1, nua |
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DO jl = 1, kdlon |
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zuu(jl, ja) = 0. |
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END DO |
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END DO |
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|
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! ------------------------------------------------------------------ |
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|
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! * 2. VERTICAL INTEGRATION |
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! -------------------- |
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|
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|
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! * 2.1 CONTRIBUTION FROM ADJACENT LAYERS |
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! --------------------------------- |
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DO jk = 1, kflev |
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|
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! * 2.1.1 DOWNWARD LAYERS |
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! --------------- |
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|
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|
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im12 = 2*(jk-1) |
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ind = (jk-1)*ng1p1 + 1 |
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ixd = ind |
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inu = jk*ng1p1 + 1 |
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ixu = ind |
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|
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DO jl = 1, kdlon |
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zglayd(jl) = 0. |
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zglayu(jl) = 0. |
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END DO |
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|
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DO jg = 1, ng1 |
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ibs = im12 + jg |
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idd = ixd + jg |
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DO ja = 1, kuaer |
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DO jl = 1, kdlon |
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zuu(jl, ja) = pabcu(jl, ja, ind) - pabcu(jl, ja, idd) |
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END DO |
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END DO |
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|
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|
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CALL lwtt(pga(1,1,1,jk), pgb(1,1,1,jk), zuu, ztt) |
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|
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DO jl = 1, kdlon |
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zwtr = pdbsl(jl, 1, ibs)*ztt(jl, 1)*ztt(jl, 10) + & |
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pdbsl(jl, 2, ibs)*ztt(jl, 2)*ztt(jl, 7)*ztt(jl, 11) + & |
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pdbsl(jl, 3, ibs)*ztt(jl, 4)*ztt(jl, 8)*ztt(jl, 12) + & |
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pdbsl(jl, 4, ibs)*ztt(jl, 5)*ztt(jl, 9)*ztt(jl, 13) + & |
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pdbsl(jl, 5, ibs)*ztt(jl, 3)*ztt(jl, 14) + & |
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pdbsl(jl, 6, ibs)*ztt(jl, 6)*ztt(jl, 15) |
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zglayd(jl) = zglayd(jl) + zwtr*wg1(jg) |
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END DO |
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|
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! * 2.1.2 DOWNWARD LAYERS |
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! --------------- |
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|
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|
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imu = ixu + jg |
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DO ja = 1, kuaer |
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DO jl = 1, kdlon |
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zuu(jl, ja) = pabcu(jl, ja, imu) - pabcu(jl, ja, inu) |
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END DO |
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END DO |
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|
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|
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CALL lwtt(pga(1,1,1,jk), pgb(1,1,1,jk), zuu, ztt) |
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|
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DO jl = 1, kdlon |
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zwtr = pdbsl(jl, 1, ibs)*ztt(jl, 1)*ztt(jl, 10) + & |
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pdbsl(jl, 2, ibs)*ztt(jl, 2)*ztt(jl, 7)*ztt(jl, 11) + & |
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pdbsl(jl, 3, ibs)*ztt(jl, 4)*ztt(jl, 8)*ztt(jl, 12) + & |
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pdbsl(jl, 4, ibs)*ztt(jl, 5)*ztt(jl, 9)*ztt(jl, 13) + & |
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pdbsl(jl, 5, ibs)*ztt(jl, 3)*ztt(jl, 14) + & |
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pdbsl(jl, 6, ibs)*ztt(jl, 6)*ztt(jl, 15) |
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zglayu(jl) = zglayu(jl) + zwtr*wg1(jg) |
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END DO |
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|
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END DO |
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|
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DO jl = 1, kdlon |
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padjd(jl, jk) = zglayd(jl) |
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pcntrb(jl, jk, jk+1) = zglayd(jl) |
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padju(jl, jk+1) = zglayu(jl) |
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pcntrb(jl, jk+1, jk) = zglayu(jl) |
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pcntrb(jl, jk, jk) = 0.0 |
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END DO |
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END DO |
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|
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DO jk = 1, kflev |
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jk2 = 2*jk |
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jk1 = jk2 - 1 |
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DO jnu = 1, ninter |
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DO jl = 1, kdlon |
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pdbdt(jl, jnu, jk) = pdbsl(jl, jnu, jk1) + pdbsl(jl, jnu, jk2) |
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END DO |
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END DO |
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END DO |
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|
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END SUBROUTINE lwvn |
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|
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end module lwvn_m |
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