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module diagcld2_m |
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IMPLICIT none |
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contains |
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SUBROUTINE diagcld2(paprs, pplay, t, q, diafra, dialiq) |
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USE dimphy, ONLY : klev, klon |
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USE suphec_m, ONLY : rcpd, rd, retv, rtt |
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USE yoethf_m, ONLY : r2es |
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USE fcttre, ONLY : foeew, qsatl, qsats |
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! Arguments d'entree: |
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REAL, intent(in):: paprs(klon, klev+1) ! pression (Pa) a inter-couche |
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REAL, intent(in):: pplay(klon, klev) ! pression (Pa) au milieu de couche |
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REAL, intent(in):: t(klon, klev) ! temperature (K) |
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REAL q(klon, klev) ! humidite specifique (Kg/Kg) |
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! Arguments de sortie: |
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REAL diafra(klon, klev) ! fraction nuageuse diagnostiquee |
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REAL dialiq(klon, klev) ! eau liquide nuageuse |
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REAL, PARAMETER:: CETAMB = 0.8 |
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REAL CLOIA, CLOIB, CLOIC, CLOID |
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PARAMETER (CLOIA=1.0E+02, CLOIB=-10.00, CLOIC=-0.6, CLOID=5.0) |
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REAL RGAMMAS |
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PARAMETER (RGAMMAS=0.05) |
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REAL CRHL |
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PARAMETER (CRHL=0.15) |
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! Variables locales: |
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INTEGER i, k, kb, invb(klon) |
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REAL zqs, zrhb, zcll, zdthmin(klon), zdthdp |
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REAL zcor |
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!----------------------------------------------------------- |
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! Initialisation: |
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DO k = 1, klev |
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DO i = 1, klon |
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diafra(i, k) = 0.0 |
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dialiq(i, k) = 0.0 |
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ENDDO |
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ENDDO |
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DO i = 1, klon |
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invb(i) = klev |
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zdthmin(i)=0.0 |
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ENDDO |
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DO k = 2, klev / 2 - 1 |
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DO i = 1, klon |
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zdthdp = (t(i, k) - t(i, k+1)) / (pplay(i, k) - pplay(i, k+1)) & |
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- RD * 0.5 * (t(i, k) + t(i, k+1)) / RCPD / paprs(i, k+1) |
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zdthdp = zdthdp * CLOIA |
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IF (pplay(i, k) > CETAMB * paprs(i, 1) .AND. zdthdp < zdthmin(i)) THEN |
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zdthmin(i) = zdthdp |
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invb(i) = k |
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ENDIF |
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ENDDO |
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ENDDO |
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DO i = 1, klon |
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kb=invb(i) |
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zqs= R2ES*FOEEW(t(i, kb), RTT >= t(i, kb))/pplay(i, kb) |
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zqs=MIN(0.5, zqs) |
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zcor=1./(1.-RETV*zqs) |
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zqs=zqs*zcor |
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zcll = CLOIB * zdthmin(i) + CLOIC |
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zcll = MIN(1.0, MAX(0.0, zcll)) |
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zrhb= q(i, kb)/zqs |
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IF (zcll > 0.0.AND.zrhb < CRHL) & |
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zcll=zcll*(1.-(CRHL-zrhb)*CLOID) |
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zcll=MIN(1.0, MAX(0.0, zcll)) |
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diafra(i, kb) = MAX(diafra(i, kb), zcll) |
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dialiq(i, kb)= diafra(i, kb) * RGAMMAS*zqs |
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ENDDO |
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END SUBROUTINE diagcld2 |
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end module diagcld2_m |
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