1 |
! |
module coefcdrag_m |
2 |
! $Header: /home/cvsroot/LMDZ4/libf/phylmd/coefcdrag.F90,v 1.1.1.1 2004/05/19 12:53:07 lmdzadmin Exp $ |
|
3 |
! |
IMPLICIT NONE |
4 |
! |
|
5 |
! |
contains |
6 |
! |
|
7 |
SUBROUTINE coefcdrag (klon, knon, nsrf, zxli, & |
SUBROUTINE coefcdrag (nsrf, speed, t, q, zgeop, psol, ts, qsurf, rugos, & |
8 |
speed, t, q, zgeop, psol, & |
cdram, cdrah, cdran, zri1, pref) |
9 |
ts, qsurf, rugos, okri, ri1, & |
|
10 |
cdram, cdrah, cdran, zri1, pref) |
! From LMDZ4/libf/phylmd/coefcdrag.F90, version 1.1.1.1, 2004/05/19 12:53:07 |
11 |
use indicesol |
|
12 |
use SUPHEC_M |
! Objet : calcul des cdrags pour le moment (cdram) et les flux de |
13 |
use yoethf_m |
! chaleur sensible et latente (cdrah), du cdrag neutre (cdran), du |
14 |
IMPLICIT none |
! nombre de Richardson entre la surface et le niveau de reference |
15 |
!------------------------------------------------------------------------- |
! (zri1) et de la pression au niveau de reference (pref). |
16 |
! Objet : calcul des cdrags pour le moment (cdram) et les flux de chaleur |
|
17 |
! sensible et latente (cdrah), du cdrag neutre (cdran), |
! I. Musat, 01.07.2002 |
18 |
! du nombre de Richardson entre la surface et le niveau de reference |
|
19 |
! (zri1) et de la pression au niveau de reference (pref). |
use indicesol, only: is_oce |
20 |
! |
use SUPHEC_M, only: rd, retv, rg, rkappa |
21 |
! I. Musat, 01.07.2002 |
use dimphy, only: klon |
22 |
!------------------------------------------------------------------------- |
|
23 |
! |
INTEGER, intent(in) :: nsrf |
24 |
! klon----input-I- dimension de la grille physique (= nb_pts_latitude X nb_pts_longitude) |
! nsrf----input-I- indice pour le type de surface; voir indicesol.inc |
25 |
! knon----input-I- nombre de points pour un type de surface |
REAL, intent(in) :: speed(:), t(:), q(:), zgeop(:), psol(:) ! (knon) |
26 |
! nsrf----input-I- indice pour le type de surface; voir indicesol.inc |
! speed---input-R- module du vent au 1er niveau du modele |
27 |
! zxli----input-L- TRUE si calcul des cdrags selon Laurent Li |
! t-------input-R- temperature de l'air au 1er niveau du modele |
28 |
! speed---input-R- module du vent au 1er niveau du modele |
! q-------input-R- humidite de l'air au 1er niveau du modele |
29 |
! t-------input-R- temperature de l'air au 1er niveau du modele |
! zgeop---input-R- geopotentiel au 1er niveau du modele |
30 |
! q-------input-R- humidite de l'air au 1er niveau du modele |
! psol----input-R- pression au sol |
31 |
! zgeop---input-R- geopotentiel au 1er niveau du modele |
REAL, dimension(klon), intent(in) :: ts, qsurf, rugos |
32 |
! psol----input-R- pression au sol |
! ts------input-R- temperature de l'air a la surface |
33 |
! ts------input-R- temperature de l'air a la surface |
! qsurf---input-R- humidite de l'air a la surface |
34 |
! qsurf---input-R- humidite de l'air a la surface |
! rugos---input-R- rugosite |
35 |
! rugos---input-R- rugosite |
|
36 |
! okri----input-L- TRUE si on veut tester le nb. Richardson entre la sfce |
REAL, dimension(klon), intent(out) :: cdram, cdrah, cdran, zri1, pref |
37 |
! et zref par rapport au Ri entre la sfce et la 1ere couche |
! cdram--output-R- cdrag pour le moment |
38 |
! ri1-----input-R- nb. Richardson entre la surface et la 1ere couche |
! cdrah--output-R- cdrag pour les flux de chaleur latente et sensible |
39 |
! |
! cdran--output-R- cdrag neutre |
40 |
! cdram--output-R- cdrag pour le moment |
! zri1---output-R- nb. Richardson entre la surface et la couche zgeop/RG |
41 |
! cdrah--output-R- cdrag pour les flux de chaleur latente et sensible |
! pref---output-R- pression au niveau zgeop/RG |
42 |
! cdran--output-R- cdrag neutre |
|
43 |
! zri1---output-R- nb. Richardson entre la surface et la couche zgeop/RG |
! Local: |
44 |
! pref---output-R- pression au niveau zgeop/RG |
REAL, parameter :: RKAR=0.40, CB=5.0, CC=5.0, CD=5.0 |
45 |
! |
INTEGER :: i |
46 |
INTEGER, intent(in) :: klon, knon, nsrf |
REAL, dimension(klon) :: zdu2, zdphi, ztsolv, ztvd |
47 |
LOGICAL, intent(in) :: zxli |
REAL, dimension(klon) :: zscf, friv, frih, zucf, zcr |
48 |
REAL, dimension(klon), intent(in) :: speed, t, q, zgeop, psol |
REAL, dimension(klon) :: zcfm1, zcfh1 |
49 |
REAL, dimension(klon), intent(in) :: ts, qsurf, rugos, ri1 |
REAL, dimension(klon) :: zcfm2, zcfh2 |
50 |
LOGICAL, intent(in) :: okri |
REAL, dimension(klon) :: trm0, trm1 |
51 |
! |
|
52 |
REAL, dimension(klon), intent(out) :: cdram, cdrah, cdran, zri1, pref |
!------------------------------------------------------------------------- |
53 |
!------------------------------------------------------------------------- |
|
54 |
! |
DO i = 1, size(speed) |
|
! Quelques constantes : |
|
|
REAL, parameter :: RKAR=0.40, CB=5.0, CC=5.0, CD=5.0 |
|
|
! |
|
|
! Variables locales : |
|
|
INTEGER :: i |
|
|
REAL, dimension(klon) :: zdu2, zdphi, ztsolv, ztvd |
|
|
REAL, dimension(klon) :: zscf, friv, frih, zucf, zcr |
|
|
REAL, dimension(klon) :: zcfm1, zcfh1 |
|
|
REAL, dimension(klon) :: zcfm2, zcfh2 |
|
|
REAL, dimension(klon) :: trm0, trm1 |
|
|
!------------------------------------------------------------------------- |
|
|
REAL :: fsta, fins, x |
|
|
fsta(x) = 1.0 / (1.0+10.0*x*(1+8.0*x)) |
|
|
fins(x) = SQRT(1.0-18.0*x) |
|
|
!------------------------------------------------------------------------- |
|
|
! |
|
|
DO i = 1, knon |
|
|
! |
|
55 |
zdphi(i) = zgeop(i) |
zdphi(i) = zgeop(i) |
56 |
zdu2(i) = speed(i)**2 |
zdu2(i) = speed(i)**2 |
57 |
pref(i) = exp(log(psol(i)) - zdphi(i)/(RD*t(i)* & |
pref(i) = exp(log(psol(i)) - zdphi(i)/(RD*t(i)* & |
58 |
(1.+ RETV * max(q(i),0.0)))) |
(1.+ RETV * max(q(i), 0.0)))) |
59 |
ztsolv(i) = ts(i) |
ztsolv(i) = ts(i) |
60 |
ztvd(i) = t(i) * (psol(i)/pref(i))**RKAPPA |
ztvd(i) = t(i) * (psol(i)/pref(i))**RKAPPA |
61 |
trm0(i) = 1. + RETV * max(qsurf(i),0.0) |
trm0(i) = 1. + RETV * max(qsurf(i), 0.0) |
62 |
trm1(i) = 1. + RETV * max(q(i),0.0) |
trm1(i) = 1. + RETV * max(q(i), 0.0) |
63 |
ztsolv(i) = ztsolv(i) * trm0(i) |
ztsolv(i) = ztsolv(i) * trm0(i) |
64 |
ztvd(i) = ztvd(i) * trm1(i) |
ztvd(i) = ztvd(i) * trm1(i) |
65 |
zri1(i) = zdphi(i)*(ztvd(i)-ztsolv(i))/(zdu2(i)*ztvd(i)) |
zri1(i) = zdphi(i)*(ztvd(i)-ztsolv(i))/(zdu2(i)*ztvd(i)) |
|
! |
|
|
! on teste zri1 par rapport au Richardson de la 1ere couche ri1 |
|
|
! |
|
|
!IM +++ |
|
|
IF(1.EQ.0) THEN |
|
|
IF (okri) THEN |
|
|
IF (ri1(i).GE.0.0.AND.zri1(i).LT.0.0) THEN |
|
|
zri1(i) = ri1(i) |
|
|
ELSE IF(ri1(i).LT.0.0.AND.zri1(i).GE.0.0) THEN |
|
|
zri1(i) = ri1(i) |
|
|
ENDIF |
|
|
ENDIF |
|
|
ENDIF |
|
|
!IM --- |
|
|
! |
|
66 |
cdran(i) = (RKAR/log(1.+zdphi(i)/(RG*rugos(i))))**2 |
cdran(i) = (RKAR/log(1.+zdphi(i)/(RG*rugos(i))))**2 |
67 |
|
|
68 |
IF (zri1(i) .ge. 0.) THEN |
IF (zri1(i) >= 0.) THEN |
69 |
! |
! situation stable : pour eviter les inconsistances dans les cas |
70 |
! situation stable : pour eviter les inconsistances dans les cas |
! tres stables on limite zri1 a 20. cf Hess et al. (1995) |
71 |
! tres stables on limite zri1 a 20. cf Hess et al. (1995) |
zri1(i) = min(20., zri1(i)) |
72 |
! |
zscf(i) = SQRT(1.+CD*ABS(zri1(i))) |
73 |
zri1(i) = min(20.,zri1(i)) |
friv(i) = max(1. / (1.+2.*CB*zri1(i)/ zscf(i)), 0.1) |
74 |
! |
zcfm1(i) = cdran(i) * friv(i) |
75 |
IF (.NOT.zxli) THEN |
frih(i) = max(1./ (1.+3.*CB*zri1(i)*zscf(i)), 0.1) |
76 |
zscf(i) = SQRT(1.+CD*ABS(zri1(i))) |
zcfh1(i) = cdran(i) * frih(i) |
77 |
friv(i) = max(1. / (1.+2.*CB*zri1(i)/ zscf(i)), 0.1) |
cdram(i) = zcfm1(i) |
78 |
zcfm1(i) = cdran(i) * friv(i) |
cdrah(i) = zcfh1(i) |
|
frih(i) = max(1./ (1.+3.*CB*zri1(i)*zscf(i)), 0.1 ) |
|
|
zcfh1(i) = cdran(i) * frih(i) |
|
|
cdram(i) = zcfm1(i) |
|
|
cdrah(i) = zcfh1(i) |
|
|
ELSE |
|
|
cdram(i) = cdran(i)* fsta(zri1(i)) |
|
|
cdrah(i) = cdran(i)* fsta(zri1(i)) |
|
|
ENDIF |
|
|
! |
|
79 |
ELSE |
ELSE |
80 |
! |
! situation instable |
81 |
! situation instable |
zucf(i) = 1./(1.+3.0*CB*CC*cdran(i)*SQRT(ABS(zri1(i)) & |
82 |
! |
*(1.0+zdphi(i)/(RG*rugos(i))))) |
83 |
IF (.NOT.zxli) THEN |
zcfm2(i) = cdran(i)*max((1.-2.0*CB*zri1(i)*zucf(i)), 0.1) |
84 |
zucf(i) = 1./(1.+3.0*CB*CC*cdran(i)*SQRT(ABS(zri1(i)) & |
zcfh2(i) = cdran(i)*max((1.-3.0*CB*zri1(i)*zucf(i)), 0.1) |
85 |
*(1.0+zdphi(i)/(RG*rugos(i))))) |
cdram(i) = zcfm2(i) |
86 |
zcfm2(i) = cdran(i)*max((1.-2.0*CB*zri1(i)*zucf(i)),0.1) |
cdrah(i) = zcfh2(i) |
87 |
zcfh2(i) = cdran(i)*max((1.-3.0*CB*zri1(i)*zucf(i)),0.1) |
|
88 |
cdram(i) = zcfm2(i) |
! cdrah sur l'ocean cf. Miller et al. (1992) |
89 |
cdrah(i) = zcfh2(i) |
|
90 |
ELSE |
zcr(i) = (0.0016/(cdran(i)*SQRT(zdu2(i))))*ABS(ztvd(i)-ztsolv(i)) & |
|
cdram(i) = cdran(i)* fins(zri1(i)) |
|
|
cdrah(i) = cdran(i)* fins(zri1(i)) |
|
|
ENDIF |
|
|
! |
|
|
! cdrah sur l'ocean cf. Miller et al. (1992) |
|
|
! |
|
|
zcr(i) = (0.0016/(cdran(i)*SQRT(zdu2(i))))*ABS(ztvd(i)-ztsolv(i)) & |
|
91 |
**(1./3.) |
**(1./3.) |
92 |
IF (nsrf.EQ.is_oce) cdrah(i) = cdran(i)*(1.0+zcr(i)**1.25) & |
IF (nsrf == is_oce) cdrah(i) = cdran(i)*(1.0+zcr(i)**1.25) & |
93 |
**(1./1.25) |
**(1./1.25) |
94 |
ENDIF |
ENDIF |
95 |
! |
END DO |
96 |
END DO |
|
97 |
RETURN |
END SUBROUTINE coefcdrag |
98 |
END SUBROUTINE coefcdrag |
|
99 |
|
end module coefcdrag_m |