source: LMDZ5/trunk/libf/phylmd/ustarhb.F90 @ 2518

Last change on this file since 2518 was 2346, checked in by Ehouarn Millour, 9 years ago

Physics/dynamics separation:

  • remove all references to dimensions.h from physics. nbp_lon (==iim) , nbp_lat (==jjm+1) and nbp_lev (==llm) from mod_grid_phy_lmdz should be used instead.
  • added module regular_lonlat_mod in phy_common to store information about the global (lon-lat) grid cell boundaries and centers.

EM
  • Property copyright set to
    Name of program: LMDZ
    Creation date: 1984
    Version: LMDZ5
    License: CeCILL version 2
    Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539
    See the license file in the root directory
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 1.8 KB
Line 
1
2! $Header$
3
4SUBROUTINE ustarhb(knon, u, v, cd_m, ustar)
5  USE dimphy
6  IMPLICIT NONE
7  ! ======================================================================
8  ! Laurent Li (LMD/CNRS), le 30 septembre 1998
9  ! Couche limite non-locale. Adaptation du code du CCM3.
10  ! Code non teste, donc a ne pas utiliser.
11  ! ======================================================================
12  ! Nonlocal scheme that determines eddy diffusivities based on a
13  ! diagnosed boundary layer height and a turbulent velocity scale.
14  ! Also countergradient effects for heat and moisture are included.
15
16  ! For more information, see Holtslag, A.A.M., and B.A. Boville, 1993:
17  ! Local versus nonlocal boundary-layer diffusion in a global climate
18  ! model. J. of Climate, vol. 6, 1825-1842.
19  ! ======================================================================
20  include "YOMCST.h"
21
22  ! Arguments:
23
24  INTEGER knon ! nombre de points a calculer
25  REAL u(klon, klev) ! vitesse U (m/s)
26  REAL v(klon, klev) ! vitesse V (m/s)
27  REAL cd_m(klon) ! coefficient de friction au sol pour vitesse
28  REAL ustar(klon)
29
30  INTEGER i, k
31  REAL zxt, zxq, zxu, zxv, zxmod, taux, tauy
32  REAL zx_alf1, zx_alf2 ! parametres pour extrapolation
33  LOGICAL unssrf(klon) ! unstb pbl w/lvls within srf pbl lyr
34  LOGICAL unsout(klon) ! unstb pbl w/lvls in outer pbl lyr
35  LOGICAL check(klon) ! True=>chk if Richardson no.>critcal
36
37  include "YOETHF.h"
38  include "FCTTRE.h"
39  DO i = 1, knon
40    zx_alf1 = 1.0
41    zx_alf2 = 1.0 - zx_alf1
42    zxu = u(i, 1)*zx_alf1 + u(i, 2)*zx_alf2
43    zxv = v(i, 1)*zx_alf1 + v(i, 2)*zx_alf2
44    zxmod = 1.0 + sqrt(zxu**2+zxv**2)
45    taux = zxu*zxmod*cd_m(i)
46    tauy = zxv*zxmod*cd_m(i)
47    ustar(i) = sqrt(taux**2+tauy**2)
48    ! print*,'Ust ',zxu,zxmod,taux,ustar(i)
49  END DO
50
51  RETURN
52END SUBROUTINE ustarhb
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