source: LMDZ5/trunk/libf/phylmd/ustarhb.F90 @ 1999

Last change on this file since 1999 was 1992, checked in by lguez, 11 years ago

Converted to free source form files in libf/phylmd which were still in
fixed source form. The conversion was done using the polish mode of
the NAG Fortran Compiler.

In addition to converting to free source form, the processing of the
files also:

-- indented the code (including comments);

-- set Fortran keywords to uppercase, and set all other identifiers
to lower case;

-- added qualifiers to end statements (for example "end subroutine
conflx", instead of "end");

-- changed the terminating statements of all DO loops so that each
loop ends with an ENDDO statement (instead of a labeled continue).

-- replaced #include by include.
  • 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  ! ym#include "dimensions.h"
21  ! ym#include "dimphy.h"
22  include "YOMCST.h"
23
24  ! Arguments:
25
26  INTEGER knon ! nombre de points a calculer
27  REAL u(klon, klev) ! vitesse U (m/s)
28  REAL v(klon, klev) ! vitesse V (m/s)
29  REAL cd_m(klon) ! coefficient de friction au sol pour vitesse
30  REAL ustar(klon)
31
32  INTEGER i, k
33  REAL zxt, zxq, zxu, zxv, zxmod, taux, tauy
34  REAL zx_alf1, zx_alf2 ! parametres pour extrapolation
35  LOGICAL unssrf(klon) ! unstb pbl w/lvls within srf pbl lyr
36  LOGICAL unsout(klon) ! unstb pbl w/lvls in outer pbl lyr
37  LOGICAL check(klon) ! True=>chk if Richardson no.>critcal
38
39  include "YOETHF.h"
40  include "FCTTRE.h"
41  DO i = 1, knon
42    zx_alf1 = 1.0
43    zx_alf2 = 1.0 - zx_alf1
44    zxu = u(i, 1)*zx_alf1 + u(i, 2)*zx_alf2
45    zxv = v(i, 1)*zx_alf1 + v(i, 2)*zx_alf2
46    zxmod = 1.0 + sqrt(zxu**2+zxv**2)
47    taux = zxu*zxmod*cd_m(i)
48    tauy = zxv*zxmod*cd_m(i)
49    ustar(i) = sqrt(taux**2+tauy**2)
50    ! print*,'Ust ',zxu,zxmod,taux,ustar(i)
51  END DO
52
53  RETURN
54END SUBROUTINE ustarhb
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