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SUBROUTINE flxddraf(ptenh, pqenh, pgeoh, paph, prfl, & |
module flxddraf_m |
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ptd, pqd, pmfd, pmfds, pmfdq, pdmfdp, & |
|
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lddraf, pen_d, pde_d) |
IMPLICIT none |
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use dimens_m |
|
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use dimphy |
contains |
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use flxadjtq_m, only: flxadjtq |
|
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use SUPHEC_M |
SUBROUTINE flxddraf(ptenh, pqenh, pgeoh, paph, prfl, ptd, pqd, pmfd, pmfds, & |
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use yoethf_m |
pmfdq, pdmfdp, lddraf, pen_d, pde_d) |
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use yoecumf |
|
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IMPLICIT none |
! This routine calculates cumulus downdraft descent |
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! |
|
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!---------------------------------------------------------------------- |
! To produce the vertical profiles for cumulus downdrafts |
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! THIS ROUTINE CALCULATES CUMULUS DOWNDRAFT DESCENT |
! (i.e. T, q, u and v and fluxes) |
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! |
|
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! TO PRODUCE THE VERTICAL PROFILES FOR CUMULUS DOWNDRAFTS |
! Input is T, q, p, Phi, u, v at half levels. |
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! (I.E. T,Q,U AND V AND FLUXES) |
! It returns fluxes of s, q and evaporation rate |
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! |
! and u, v at levels where downdraft occurs |
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! INPUT IS T,Q,P,PHI,U,V AT HALF LEVELS. |
|
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! IT RETURNS FLUXES OF S,Q AND EVAPORATION RATE |
! Calculate moist descent for entraining/detraining plume by |
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! AND U,V AT LEVELS WHERE DOWNDRAFT OCCURS |
! A) moving air dry-adiabatically to next level below and |
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! |
! B) correcting for evaporation to obtain saturated state. |
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! CALCULATE MOIST DESCENT FOR ENTRAINING/DETRAINING PLUME BY |
|
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! A) MOVING AIR DRY-ADIABATICALLY TO NEXT LEVEL BELOW AND |
USE dimphy, ONLY: klev, klon |
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! B) CORRECTING FOR EVAPORATION TO OBTAIN SATURATED STATE. |
USE flxadjtq_m, ONLY: flxadjtq |
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! |
USE suphec_m, ONLY: rcpd, rd, retv, rg |
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!---------------------------------------------------------------------- |
USE yoecumf, ONLY: cmfcmin, entrdd |
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! |
|
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REAL ptenh(klon,klev), pqenh(klon,klev) |
REAL ptenh(klon, klev), pqenh(klon, klev) |
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REAL pgeoh(klon,klev), paph(klon,klev+1) |
REAL, intent(in):: pgeoh(klon, klev), paph(klon, klev + 1) |
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! |
REAL prfl(klon) |
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REAL ptd(klon,klev), pqd(klon,klev) |
REAL ptd(klon, klev), pqd(klon, klev) |
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REAL pmfd(klon,klev), pmfds(klon,klev), pmfdq(klon,klev) |
REAL pmfd(klon, klev), pmfds(klon, klev), pmfdq(klon, klev) |
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REAL pdmfdp(klon,klev) |
REAL pdmfdp(klon, klev) |
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REAL prfl(klon) |
LOGICAL lddraf(klon) |
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LOGICAL lddraf(klon) |
REAL pen_d(klon, klev), pde_d(klon, klev) |
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! |
|
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REAL pen_d(klon,klev), pde_d(klon,klev), zcond(klon) |
! Local: |
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LOGICAL llo2(klon), llo1 |
real zcond(klon) |
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INTEGER i, k, is, icall, itopde |
LOGICAL llo2(klon), llo1 |
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REAL zentr, zseen, zqeen, zsdde, zqdde, zmfdsk, zmfdqk, zdmfdp |
INTEGER i, k, is, icall, itopde |
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REAL zbuo |
REAL zentr, zseen, zqeen, zsdde, zqdde, zmfdsk, zmfdqk, zdmfdp |
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!---------------------------------------------------------------------- |
REAL zbuo |
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! CALCULATE MOIST DESCENT FOR CUMULUS DOWNDRAFT BY |
|
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! (A) CALCULATING ENTRAINMENT RATES, ASSUMING |
!---------------------------------------------------------------------- |
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! LINEAR DECREASE OF MASSFLUX IN PBL |
|
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! (B) DOING MOIST DESCENT - EVAPORATIVE COOLING |
! Calculate moist descent for cumulus downdraft by |
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! AND MOISTENING IS CALCULATED IN *flxadjtq* |
|
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! (C) CHECKING FOR NEGATIVE BUOYANCY AND |
! (A) calculating entrainment rates, assuming linear decrease of |
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! SPECIFYING FINAL T,Q,U,V AND DOWNWARD FLUXES |
! massflux in PBL |
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! |
|
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DO 180 k = 3, klev |
! (B) doing moist descent - evaporative cooling and moistening is |
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! |
! calculated in flxadjtq |
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is = 0 |
|
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DO i = 1, klon |
! (C) checking for negative buoyancy and specifying final T, q, u, |
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llo2(i)=lddraf(i).AND.pmfd(i,k-1).LT.0. |
! v and downward fluxes |
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IF (llo2(i)) is = is + 1 |
|
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ENDDO |
DO k = 3, klev |
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IF (is.EQ.0) GOTO 180 |
is = 0 |
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! |
DO i = 1, klon |
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DO i = 1, klon |
llo2(i)=lddraf(i).AND.pmfd(i, k-1).LT.0. |
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IF (llo2(i)) THEN |
IF (llo2(i)) is = is + 1 |
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zentr = ENTRDD*pmfd(i,k-1)*RD*ptenh(i,k-1)/ & |
ENDDO |
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(RG*paph(i,k-1))*(paph(i,k)-paph(i,k-1)) |
IF (is.EQ.0) cycle |
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pen_d(i,k) = zentr |
|
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pde_d(i,k) = zentr |
DO i = 1, klon |
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ENDIF |
IF (llo2(i)) THEN |
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ENDDO |
zentr = ENTRDD*pmfd(i, k-1)*RD*ptenh(i, k-1)/ & |
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! |
(RG*paph(i, k-1))*(paph(i, k)-paph(i, k-1)) |
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itopde = klev-2 |
pen_d(i, k) = zentr |
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IF (k.GT.itopde) THEN |
pde_d(i, k) = zentr |
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DO i = 1, klon |
ENDIF |
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IF (llo2(i)) THEN |
ENDDO |
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pen_d(i,k)=0. |
|
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pde_d(i,k)=pmfd(i,itopde)* & |
itopde = klev-2 |
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(paph(i,k)-paph(i,k-1))/(paph(i,klev+1)-paph(i,itopde)) |
IF (k.GT.itopde) THEN |
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ENDIF |
DO i = 1, klon |
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ENDDO |
IF (llo2(i)) THEN |
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ENDIF |
pen_d(i, k)=0. |
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! |
pde_d(i, k) = pmfd(i, itopde) * (paph(i, k) - paph(i, k - 1)) & |
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DO i = 1, klon |
/ (paph(i, klev + 1) - paph(i, itopde)) |
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IF (llo2(i)) THEN |
ENDIF |
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pmfd(i,k) = pmfd(i,k-1)+pen_d(i,k)-pde_d(i,k) |
ENDDO |
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zseen = (RCPD*ptenh(i,k-1)+pgeoh(i,k-1))*pen_d(i,k) |
ENDIF |
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zqeen = pqenh(i,k-1)*pen_d(i,k) |
|
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zsdde = (RCPD*ptd(i,k-1)+pgeoh(i,k-1))*pde_d(i,k) |
DO i = 1, klon |
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zqdde = pqd(i,k-1)*pde_d(i,k) |
IF (llo2(i)) THEN |
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zmfdsk = pmfds(i,k-1)+zseen-zsdde |
pmfd(i, k) = pmfd(i, k-1) + pen_d(i, k)-pde_d(i, k) |
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zmfdqk = pmfdq(i,k-1)+zqeen-zqdde |
zseen = (RCPD*ptenh(i, k-1) + pgeoh(i, k-1))*pen_d(i, k) |
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pqd(i,k) = zmfdqk*(1./MIN(-CMFCMIN,pmfd(i,k))) |
zqeen = pqenh(i, k-1)*pen_d(i, k) |
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ptd(i,k) = (zmfdsk*(1./MIN(-CMFCMIN,pmfd(i,k)))- & |
zsdde = (RCPD*ptd(i, k-1) + pgeoh(i, k-1))*pde_d(i, k) |
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pgeoh(i,k))/RCPD |
zqdde = pqd(i, k-1)*pde_d(i, k) |
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ptd(i,k) = MIN(400.,ptd(i,k)) |
zmfdsk = pmfds(i, k-1) + zseen-zsdde |
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ptd(i,k) = MAX(100.,ptd(i,k)) |
zmfdqk = pmfdq(i, k-1) + zqeen-zqdde |
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zcond(i) = pqd(i,k) |
pqd(i, k) = zmfdqk*(1./MIN(-CMFCMIN, pmfd(i, k))) |
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ENDIF |
ptd(i, k) = (zmfdsk*(1./MIN(-CMFCMIN, pmfd(i, k)))- & |
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ENDDO |
pgeoh(i, k))/RCPD |
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! |
ptd(i, k) = MIN(400., ptd(i, k)) |
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icall = 2 |
ptd(i, k) = MAX(100., ptd(i, k)) |
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CALL flxadjtq(paph(1,k), ptd(1,k), pqd(1,k), llo2, icall) |
zcond(i) = pqd(i, k) |
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! |
ENDIF |
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DO i = 1, klon |
ENDDO |
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IF (llo2(i)) THEN |
|
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zcond(i) = zcond(i)-pqd(i,k) |
icall = 2 |
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zbuo = ptd(i,k)*(1.+RETV *pqd(i,k))- & |
CALL flxadjtq(paph(:, k), ptd(1, k), pqd(1, k), llo2, icall) |
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ptenh(i,k)*(1.+RETV *pqenh(i,k)) |
|
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llo1 = zbuo.LT.0..AND.(prfl(i)-pmfd(i,k)*zcond(i).GT.0.) |
DO i = 1, klon |
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IF (.not.llo1) pmfd(i,k) = 0.0 |
IF (llo2(i)) THEN |
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pmfds(i,k) = (RCPD*ptd(i,k)+pgeoh(i,k))*pmfd(i,k) |
zcond(i) = zcond(i)-pqd(i, k) |
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pmfdq(i,k) = pqd(i,k)*pmfd(i,k) |
zbuo = ptd(i, k)*(1. + RETV *pqd(i, k))- & |
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zdmfdp = -pmfd(i,k)*zcond(i) |
ptenh(i, k)*(1. + RETV *pqenh(i, k)) |
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pdmfdp(i,k-1) = zdmfdp |
llo1 = zbuo.LT.0..AND.(prfl(i)-pmfd(i, k)*zcond(i).GT.0.) |
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prfl(i) = prfl(i)+zdmfdp |
IF (.not.llo1) pmfd(i, k) = 0.0 |
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ENDIF |
pmfds(i, k) = (RCPD*ptd(i, k) + pgeoh(i, k))*pmfd(i, k) |
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ENDDO |
pmfdq(i, k) = pqd(i, k)*pmfd(i, k) |
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! |
zdmfdp = -pmfd(i, k)*zcond(i) |
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180 CONTINUE |
pdmfdp(i, k-1) = zdmfdp |
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RETURN |
prfl(i) = prfl(i) + zdmfdp |
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END |
ENDIF |
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ENDDO |
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end DO |
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END SUBROUTINE flxddraf |
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end module flxddraf_m |
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