1 |
module ustarhb_m |
2 |
|
3 |
IMPLICIT none |
4 |
|
5 |
contains |
6 |
|
7 |
SUBROUTINE ustarhb(knon, u, v, cd_m, ustar) |
8 |
|
9 |
! From LMDZ4/libf/phylmd/ustarhb.F, version 1.1 2004/06/22 11:45:35 |
10 |
|
11 |
! Laurent Li (LMD/CNRS), le 30 septembre 1998 |
12 |
! Couche limite non-locale. Adaptation du code du CCM3. |
13 |
! Code non teste, donc a ne pas utiliser. |
14 |
|
15 |
! Nonlocal scheme that determines eddy diffusivities based on a |
16 |
! diagnosed boundary layer height and a turbulent velocity scale. |
17 |
! Also countergradient effects for heat and moisture are included. |
18 |
|
19 |
! For more information, see Holtslag, A.A.M., and B.A. Boville, 1993: |
20 |
! Local versus nonlocal boundary-layer diffusion in a global climate |
21 |
! model. J. of Climate, vol. 6, 1825-1842. |
22 |
|
23 |
USE dimphy, ONLY: klev, klon |
24 |
|
25 |
! Arguments: |
26 |
|
27 |
INTEGER knon ! nombre de points a calculer |
28 |
REAL u(klon, klev) ! vitesse U (m/s) |
29 |
REAL v(klon, klev) ! vitesse V (m/s) |
30 |
|
31 |
REAL, intent(in):: cd_m(:) |
32 |
! (knon) coefficient de friction au sol pour vitesse |
33 |
|
34 |
REAL ustar(klon) |
35 |
|
36 |
INTEGER i, k |
37 |
REAL zxt, zxq, zxu, zxv, zxmod, taux, tauy |
38 |
REAL zx_alf1, zx_alf2 ! parametres pour extrapolation |
39 |
LOGICAL unssrf(klon) ! unstb pbl w/lvls within srf pbl lyr |
40 |
LOGICAL unsout(klon) ! unstb pbl w/lvls in outer pbl lyr |
41 |
LOGICAL check(klon) ! True=>chk if Richardson no.>critcal |
42 |
|
43 |
!--------------------------------------------------------------- |
44 |
|
45 |
DO i = 1, knon |
46 |
zx_alf1 = 1.0 |
47 |
zx_alf2 = 1.0 - zx_alf1 |
48 |
zxu = u(i, 1)*zx_alf1+u(i, 2)*zx_alf2 |
49 |
zxv = v(i, 1)*zx_alf1+v(i, 2)*zx_alf2 |
50 |
zxmod = 1.0+SQRT(zxu**2+zxv**2) |
51 |
taux = zxu *zxmod*cd_m(i) |
52 |
tauy = zxv *zxmod*cd_m(i) |
53 |
ustar(i) = SQRT(taux**2+tauy**2) |
54 |
ENDDO |
55 |
|
56 |
end SUBROUTINE ustarhb |
57 |
|
58 |
end module ustarhb_m |