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| 2 | ! $Header: /home/cvsroot/LMDZ4/libf/phylmd/calbeta.F90,v 1.2 2007/06/22 12:49:51 |
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| 3 | ! fairhead Exp $ |
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| 4 | |
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| 5 | SUBROUTINE calbeta_clim(klon,time,lat_radian,beta) |
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| 6 | |
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| 7 | !====================================================================== |
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| 8 | ! Auteur(s): A.K. TRAORE |
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| 9 | !====================================================================== |
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| 10 | |
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| 11 | !USE phys_local_var_mod, ONLY: ideal_beta !pour faire la variable dans le |
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| 12 | ! physiq.f pour des sorties directes de beta |
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| 13 | |
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| 14 | USE phys_cal_mod, ONLY: year_len |
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| 15 | USE lmdz_print_control, ONLY: prt_level |
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| 16 | |
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| 17 | IMPLICIT NONE |
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| 18 | INTEGER klon,nt,j,it |
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| 19 | REAL logbeta(klon),pi |
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| 20 | REAL lat(klon),lat_radian(klon) |
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| 21 | INTEGER time |
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| 22 | REAL time_radian |
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| 23 | REAL lat_sahel,beta(klon) |
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| 24 | REAL lat_nord,lat_sud |
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| 25 | |
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| 26 | !============================================== |
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| 27 | |
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| 28 | pi=2.*asin(1.) |
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| 29 | beta=0. |
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| 30 | |
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| 31 | !calcul des cordonnees |
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| 32 | |
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| 33 | ! PRINT*,'LATITUDES BETA ',lat_radian |
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| 34 | time_radian=(time+15.)*2.*pi / year_len |
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| 35 | |
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| 36 | IF (prt_level >= 1) PRINT *, 'time_radian time', time_radian, time |
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| 37 | |
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| 38 | lat(:)=180.*lat_radian(:)/pi !lat(:)=lat_radian(:) |
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| 39 | |
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| 40 | lat_sahel=-5*sin(time_radian)+13 |
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| 41 | lat_nord=lat_sahel+25. |
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| 42 | lat_sud=lat_sahel-25. |
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| 43 | DO j=1,klon |
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| 44 | !=========== |
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| 45 | IF (lat(j) < 5. ) THEN |
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| 46 | logbeta(j)=0.2*(lat(j)-lat_sud)-1.6 |
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| 47 | beta(j)=10**(logbeta(j)) |
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| 48 | beta(j)=max(beta(j),0.03) |
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| 49 | beta(j)=min(beta(j),0.22) |
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| 50 | ! PRINT*,'j,lat,lat_radian,beta',j,lat(j),lat_radian(j),beta(j) |
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| 51 | !=========== |
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| 52 | elseif (lat(j) < 22.) then !lat(j)<22. |
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| 53 | |
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| 54 | logbeta(j)=-0.25*(lat(j)-lat_sahel)-1.6 |
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| 55 | beta(j)=10**(logbeta(j)) |
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| 56 | beta(j)=max(beta(j),1.e-2) |
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| 57 | beta(j)=min(beta(j),0.22) |
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| 58 | ! PRINT*,'j,lat,lat_radian,beta',j,lat(j),lat_radian(j),beta(j) |
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| 59 | !=========== |
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| 60 | else |
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| 61 | logbeta(j)=0.25*(lat(j)-lat_nord)-1. |
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| 62 | beta(j)=10**(logbeta(j)) |
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| 63 | beta(j)=max(beta(j),1.e-2) |
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| 64 | beta(j)=min(beta(j),0.25) |
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| 65 | ! PRINT*,'j,lat,lat_radian,beta',j,lat(j),lat_radian(j),beta(j) |
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| 66 | endif |
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| 67 | !=========== |
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| 68 | enddo |
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| 69 | |
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| 70 | END SUBROUTINE calbeta_clim |
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