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module flxasc_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 flxasc(pdtime, ptenh, pqenh, pten, pqen, pqsen, pgeo, pgeoh, & |
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pap, paph, pqte, pvervel, ldland, ldcum, ktype, klab, ptu, pqu, plu, & |
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pmfu, pmfub, pentr, pmfus, pmfuq, pmful, plude, pdmfup, kcbot, kctop, & |
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kctop0, kcum, pen_u, pde_u) |
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|
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! This routine does the calculations for cloud ascents for cumulus |
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! parameterization. |
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|
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USE dimphy, ONLY: klev, klon |
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use flxadjtq_m, only: flxadjtq |
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USE suphec_m, ONLY: rcpd, rd, retv, rg, rtt |
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USE yoecumf, ONLY: cmfcmin, cmfctop, cprcon, entrmid, lmfmid |
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|
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REAL, intent(in):: pdtime |
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REAL, intent(in):: ptenh(klon, klev) |
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REAL, intent(in):: pqenh(klon, klev) |
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REAL, intent(in):: pten(klon, klev) |
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REAL, intent(in):: pqen(klon, klev) |
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REAL, intent(in):: pqsen(klon, klev) |
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REAL, intent(in):: pgeo(klon, klev), pgeoh(klon, klev) |
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REAL, intent(in):: pap(klon, klev), paph(klon, klev+1) |
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REAL, intent(in):: pqte(klon, klev) |
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REAL, intent(in):: pvervel(klon, klev) ! vitesse verticale en Pa/s |
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LOGICAL, intent(in):: ldland(klon) |
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LOGICAL, intent(inout):: ldcum(klon) |
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INTEGER, intent(inout):: ktype(klon) |
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integer klab(klon, klev) |
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REAL ptu(klon, klev), pqu(klon, klev), plu(klon, klev) |
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REAL pmfu(klon, klev) |
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REAL, intent(inout):: pmfub(klon) |
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real pentr(klon) |
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real pmfus(klon, klev) |
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REAL pmfuq(klon, klev), pmful(klon, klev) |
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REAL plude(klon, klev) |
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REAL pdmfup(klon, klev) |
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integer kcbot(klon), kctop(klon) |
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INTEGER kctop0(klon) |
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integer, intent(out):: kcum |
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REAL pen_u(klon, klev), pde_u(klon, klev) |
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|
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! Local: |
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|
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REAL zqold(klon) |
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REAL zdland(klon) |
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LOGICAL llflag(klon) |
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INTEGER k, i, is, icall |
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REAL ztglace, zdphi, zqeen, zseen, zscde, zqude |
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REAL zmfusk, zmfuqk, zmfulk, zbuo, zdnoprc, zprcon, zlnew |
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|
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REAL zpbot(klon), zptop(klon), zrho(klon) |
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REAL zdprho, zentr, zpmid, zmftest, zmfmax |
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LOGICAL llo1, llo2 |
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|
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REAL zwmax(klon), zzzmb |
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INTEGER klwmin(klon) ! level of maximum vertical velocity |
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real fact |
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|
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!---------------------------------------------------------------------- |
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|
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ztglace = RTT - 13. |
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|
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! Chercher le niveau où la vitesse verticale est maximale : |
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|
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DO i = 1, klon |
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klwmin(i) = klev |
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zwmax(i) = 0.0 |
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ENDDO |
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|
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DO k = klev, 3, -1 |
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DO i = 1, klon |
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IF (pvervel(i, k) < zwmax(i)) THEN |
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zwmax(i) = pvervel(i, k) |
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klwmin(i) = k |
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ENDIF |
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ENDDO |
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ENDDO |
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|
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! Set default values: |
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|
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DO i = 1, klon |
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IF (.NOT. ldcum(i)) ktype(i)=0 |
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ENDDO |
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|
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DO k=1, klev |
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DO i = 1, klon |
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plu(i, k)=0. |
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pmfu(i, k)=0. |
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pmfus(i, k)=0. |
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pmfuq(i, k)=0. |
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pmful(i, k)=0. |
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plude(i, k)=0. |
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pdmfup(i, k)=0. |
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IF (.NOT. ldcum(i) .OR. ktype(i) == 3) klab(i, k)=0 |
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IF (.NOT. ldcum(i) .AND. paph(i, k) < 4e4) kctop0(i) = k |
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ENDDO |
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ENDDO |
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|
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DO i = 1, klon |
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IF (ldland(i)) THEN |
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zdland(i)=3.0E4 |
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zdphi=pgeoh(i, kctop0(i))-pgeoh(i, kcbot(i)) |
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IF (ptu(i, kctop0(i)) >= ztglace) zdland(i)=zdphi |
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zdland(i)=MAX(3.0E4, zdland(i)) |
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zdland(i)=MIN(5.0E4, zdland(i)) |
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ENDIF |
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ENDDO |
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|
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! Initialiser les valeurs au niveau d'ascendance |
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|
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DO i = 1, klon |
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kctop(i) = klev-1 |
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IF (.NOT. ldcum(i)) THEN |
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kcbot(i) = klev-1 |
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pmfub(i) = 0. |
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pqu(i, klev) = 0. |
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ENDIF |
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pmfu(i, klev) = pmfub(i) |
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pmfus(i, klev) = pmfub(i) * (RCPD * ptu(i, klev)+pgeoh(i, klev)) |
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pmfuq(i, klev) = pmfub(i) * pqu(i, klev) |
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ENDDO |
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|
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DO i = 1, klon |
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ldcum(i) = .FALSE. |
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ENDDO |
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|
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! Do ascent: subcloud layer (klab=1), clouds (klab=2) by doing |
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! first dry-adiabatic ascent and then by adjusting t, q and l |
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! accordingly in flxadjtq, then check for buoyancy and set flags |
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! accordingly. |
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|
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DO k = klev - 1, 3, -1 |
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IF (LMFMID .AND. k < klev - 1 .AND. k > klev / 2) THEN |
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DO i = 1, klon |
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IF (.NOT. ldcum(i) .AND. klab(i, k + 1) == 0 .AND. & |
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pqen(i, k) > 0.9 * pqsen(i, k)) THEN |
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ptu(i, k+1) = pten(i, k) +(pgeo(i, k)-pgeoh(i, k+1))/RCPD |
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pqu(i, k+1) = pqen(i, k) |
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plu(i, k+1) = 0.0 |
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zzzmb = MAX(CMFCMIN, -pvervel(i, k)/RG) |
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zmfmax = (paph(i, k) - paph(i, k-1)) / (RG * pdtime) |
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pmfub(i) = MIN(zzzmb, zmfmax) |
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pmfu(i, k+1) = pmfub(i) |
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pmfus(i, k+1) = pmfub(i) * (RCPD * ptu(i, k+1)+pgeoh(i, k+1)) |
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pmfuq(i, k+1) = pmfub(i) * pqu(i, k+1) |
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pmful(i, k+1) = 0.0 |
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pdmfup(i, k+1) = 0.0 |
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kcbot(i) = k |
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klab(i, k+1) = 1 |
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ktype(i) = 3 |
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pentr(i) = ENTRMID |
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ENDIF |
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ENDDO |
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ENDIF |
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|
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is = 0 |
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DO i = 1, klon |
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is = is + klab(i, k+1) |
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IF (klab(i, k+1) == 0) klab(i, k) = 0 |
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llflag(i) = .FALSE. |
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IF (klab(i, k+1) > 0) llflag(i) = .TRUE. |
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ENDDO |
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IF (is == 0) cycle |
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|
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! Calculer le taux d'entraînement et de détraînement : |
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|
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DO i = 1, klon |
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pen_u(i, k) = 0.0 |
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pde_u(i, k) = 0.0 |
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zrho(i) = paph(i, k + 1) / (RD * ptenh(i, k + 1)) |
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zpbot(i) = paph(i, kcbot(i)) |
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zptop(i) = paph(i, kctop0(i)) |
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ENDDO |
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|
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DO i = 1, klon |
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IF (ldcum(i)) THEN |
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zdprho = (paph(i, k + 1) - paph(i, k)) / (RG * zrho(i)) |
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zentr=pentr(i) * pmfu(i, k+1) * zdprho |
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llo1=k < kcbot(i) |
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IF (llo1) pde_u(i, k)=zentr |
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zpmid=0.5 * (zpbot(i)+zptop(i)) |
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llo2 = llo1 .AND. ktype(i) == 2 & |
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.AND. (zpbot(i) - paph(i, k) < 0.2E5 .OR. paph(i, k) > zpmid) |
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IF (llo2) pen_u(i, k)=zentr |
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llo2 = llo1 .AND. (ktype(i) == 1 .OR. ktype(i) == 3) .AND. & |
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(k >= MAX(klwmin(i), kctop0(i) + 2) .OR. pap(i, k) > zpmid) |
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IF (llo2) pen_u(i, k)=zentr |
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llo1=pen_u(i, k) > 0. .AND. (ktype(i) == 1 .OR. ktype(i) == 2) |
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IF (llo1) THEN |
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fact = 1. + 3. * (1. - MIN(1., (zpbot(i) - pap(i, k)) / 1.5E4)) |
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zentr = zentr * fact |
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pen_u(i, k)=pen_u(i, k) * fact |
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pde_u(i, k)=pde_u(i, k) * fact |
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ENDIF |
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IF (llo2 .AND. pqenh(i, k+1) > 1e-5) & |
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pen_u(i, k)=zentr+MAX(pqte(i, k), 0.)/pqenh(i, k+1) * & |
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zrho(i) * zdprho |
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ENDIF |
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end DO |
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|
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! Do adiabatic ascent for entraining/detraining plume |
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|
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DO i = 1, klon |
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IF (llflag(i)) THEN |
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IF (k < kcbot(i)) THEN |
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zmftest = pmfu(i, k+1)+pen_u(i, k)-pde_u(i, k) |
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zmfmax = MIN(zmftest, & |
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(paph(i, k) - paph(i, k - 1)) / (RG * pdtime)) |
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pen_u(i, k)=MAX(pen_u(i, k)-MAX(0.0, zmftest-zmfmax), 0.0) |
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ENDIF |
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pde_u(i, k)=MIN(pde_u(i, k), 0.75 * pmfu(i, k+1)) |
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! calculer le flux de masse du niveau k a partir de celui du k+1 |
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pmfu(i, k)=pmfu(i, k+1)+pen_u(i, k)-pde_u(i, k) |
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! calculer les valeurs Su, Qu et l du niveau k dans le |
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! panache montant |
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zqeen=pqenh(i, k+1) * pen_u(i, k) |
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zseen=(RCPD * ptenh(i, k+1)+pgeoh(i, k+1)) * pen_u(i, k) |
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zscde=(RCPD * ptu(i, k+1)+pgeoh(i, k+1)) * pde_u(i, k) |
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zqude=pqu(i, k+1) * pde_u(i, k) |
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plude(i, k)=plu(i, k+1) * pde_u(i, k) |
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zmfusk=pmfus(i, k+1)+zseen-zscde |
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zmfuqk=pmfuq(i, k+1)+zqeen-zqude |
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zmfulk=pmful(i, k+1) -plude(i, k) |
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plu(i, k)=zmfulk * (1./MAX(CMFCMIN, pmfu(i, k))) |
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pqu(i, k)=zmfuqk * (1./MAX(CMFCMIN, pmfu(i, k))) |
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ptu(i, k)=(zmfusk * (1./MAX(CMFCMIN, pmfu(i, k)))- & |
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pgeoh(i, k))/RCPD |
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ptu(i, k)=MAX(100., ptu(i, k)) |
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ptu(i, k)=MIN(400., ptu(i, k)) |
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zqold(i)=pqu(i, k) |
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ELSE |
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zqold(i)=0.0 |
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ENDIF |
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end DO |
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|
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! Do corrections for moist ascent by adjusting t, q and l |
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|
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icall = 1 |
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CALL flxadjtq(paph(1, k), ptu(1, k), pqu(1, k), llflag, icall) |
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|
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DO i = 1, klon |
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IF (llflag(i) .AND. pqu(i, k).NE.zqold(i)) THEN |
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klab(i, k) = 2 |
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plu(i, k) = plu(i, k)+zqold(i)-pqu(i, k) |
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zbuo = ptu(i, k) * (1.+RETV * pqu(i, k))- & |
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ptenh(i, k) * (1.+RETV * pqenh(i, k)) |
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IF (klab(i, k+1) == 1) zbuo=zbuo+0.5 |
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IF (zbuo > 0. .AND. pmfu(i, k) >= 0.1 * pmfub(i)) THEN |
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kctop(i) = k |
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ldcum(i) = .TRUE. |
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zdnoprc = 1.5E4 |
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IF (ldland(i)) zdnoprc = zdland(i) |
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zprcon = CPRCON |
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IF ((zpbot(i) - paph(i, k)) < zdnoprc) zprcon = 0. |
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zlnew=plu(i, k)/(1.+zprcon * (pgeoh(i, k)-pgeoh(i, k+1))) |
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pdmfup(i, k)=MAX(0., (plu(i, k)-zlnew) * pmfu(i, k)) |
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plu(i, k)=zlnew |
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ELSE |
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klab(i, k)=0 |
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pmfu(i, k)=0. |
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ENDIF |
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ENDIF |
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end DO |
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DO i = 1, klon |
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IF (llflag(i)) THEN |
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pmful(i, k)=plu(i, k) * pmfu(i, k) |
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pmfus(i, k)=(RCPD * ptu(i, k)+pgeoh(i, k)) * pmfu(i, k) |
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pmfuq(i, k)=pqu(i, k) * pmfu(i, k) |
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ENDIF |
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end DO |
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end DO |
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|
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! Determine convective fluxes above non-buoyancy level (note: |
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! cloud variables like t, q and l are not affected by detrainment |
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! and are already known from previous calculations above). |
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|
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DO i = 1, klon |
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IF (kctop(i) == klev-1) ldcum(i) = .FALSE. |
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kcbot(i) = MAX(kcbot(i), kctop(i)) |
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ENDDO |
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|
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ldcum(1)=ldcum(1) |
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|
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is = 0 |
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DO i = 1, klon |
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if (ldcum(i)) is = is + 1 |
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ENDDO |
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kcum = is |
| 294 |
IF (is /= 0) then |
| 295 |
DO i = 1, klon |
| 296 |
IF (ldcum(i)) THEN |
| 297 |
k=kctop(i)-1 |
| 298 |
pde_u(i, k)=(1.-CMFCTOP) * pmfu(i, k+1) |
| 299 |
plude(i, k)=pde_u(i, k) * plu(i, k+1) |
| 300 |
pmfu(i, k)=pmfu(i, k+1)-pde_u(i, k) |
| 301 |
zlnew=plu(i, k) |
| 302 |
pdmfup(i, k)=MAX(0., (plu(i, k)-zlnew) * pmfu(i, k)) |
| 303 |
plu(i, k)=zlnew |
| 304 |
pmfus(i, k)=(RCPD * ptu(i, k)+pgeoh(i, k)) * pmfu(i, k) |
| 305 |
pmfuq(i, k)=pqu(i, k) * pmfu(i, k) |
| 306 |
pmful(i, k)=plu(i, k) * pmfu(i, k) |
| 307 |
plude(i, k-1)=pmful(i, k) |
| 308 |
ENDIF |
| 309 |
end DO |
| 310 |
end IF |
| 311 |
|
| 312 |
END SUBROUTINE flxasc |
| 313 |
|
| 314 |
end module flxasc_m |
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