[524] | 1 | ! |
---|
[1279] | 2 | ! $Id: ugeostr.F90 1999 2014-03-20 09:57:19Z emillour $ |
---|
[524] | 3 | ! |
---|
[1474] | 4 | subroutine ugeostr(phi,ucov) |
---|
[524] | 5 | |
---|
[1474] | 6 | ! Calcul du vent covariant geostrophique a partir du champ de |
---|
| 7 | ! geopotentiel. |
---|
| 8 | ! We actually compute: (1 - cos^8 \phi) u_g |
---|
| 9 | ! to have a wind going smoothly to 0 at the equator. |
---|
| 10 | ! We assume that the surface pressure is uniform so that model |
---|
| 11 | ! levels are pressure levels. |
---|
[524] | 12 | |
---|
[1474] | 13 | implicit none |
---|
[524] | 14 | |
---|
[1474] | 15 | include "dimensions.h" |
---|
| 16 | include "paramet.h" |
---|
| 17 | include "comconst.h" |
---|
| 18 | include "comgeom2.h" |
---|
[524] | 19 | |
---|
[1474] | 20 | real ucov(iip1,jjp1,llm),phi(iip1,jjp1,llm) |
---|
| 21 | real um(jjm,llm),fact,u(iip1,jjm,llm) |
---|
| 22 | integer i,j,l |
---|
[524] | 23 | |
---|
[1474] | 24 | real zlat |
---|
[524] | 25 | |
---|
[1474] | 26 | um(:,:)=0 ! initialize um() |
---|
[524] | 27 | |
---|
[1474] | 28 | DO j=1,jjm |
---|
[1279] | 29 | |
---|
[1474] | 30 | if (abs(sin(rlatv(j))).lt.1.e-4) then |
---|
| 31 | zlat=1.e-4 |
---|
| 32 | else |
---|
| 33 | zlat=rlatv(j) |
---|
| 34 | endif |
---|
| 35 | fact=cos(zlat) |
---|
| 36 | fact=fact*fact |
---|
| 37 | fact=fact*fact |
---|
| 38 | fact=fact*fact |
---|
| 39 | fact=(1.-fact)/ & |
---|
| 40 | (2.*omeg*sin(zlat)*(rlatu(j+1)-rlatu(j))) |
---|
| 41 | fact=-fact/rad |
---|
| 42 | DO l=1,llm |
---|
| 43 | DO i=1,iim |
---|
| 44 | u(i,j,l)=fact*(phi(i,j+1,l)-phi(i,j,l)) |
---|
| 45 | um(j,l)=um(j,l)+u(i,j,l)/REAL(iim) |
---|
| 46 | ENDDO |
---|
| 47 | ENDDO |
---|
| 48 | ENDDO |
---|
| 49 | call dump2d(jjm,llm,um,'Vent-u geostrophique') |
---|
[524] | 50 | |
---|
[1474] | 51 | ! calcul des champ de vent: |
---|
[524] | 52 | |
---|
[1474] | 53 | DO l=1,llm |
---|
| 54 | DO i=1,iip1 |
---|
| 55 | ucov(i,1,l)=0. |
---|
| 56 | ucov(i,jjp1,l)=0. |
---|
| 57 | end DO |
---|
| 58 | DO j=2,jjm |
---|
| 59 | DO i=1,iim |
---|
| 60 | ucov(i,j,l) = 0.5*(u(i,j,l)+u(i,j-1,l))*cu(i,j) |
---|
| 61 | end DO |
---|
| 62 | ucov(iip1,j,l)=ucov(1,j,l) |
---|
| 63 | end DO |
---|
| 64 | end DO |
---|
[524] | 65 | |
---|
[1474] | 66 | print *, 301 |
---|
[524] | 67 | |
---|
[1474] | 68 | end subroutine ugeostr |
---|