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