| 1 |
molod |
1.1 |
C $Header: $ |
| 2 |
|
|
C $Name: $ |
| 3 |
|
|
|
| 4 |
|
|
#include "FIZHI_OPTIONS.h" |
| 5 |
|
|
subroutine rayleigh(myid,pres,preskappa,psurf,u,v,im,jm,lm,bi,bj, |
| 6 |
|
|
. rfu,rfv,rft) |
| 7 |
|
|
C ********************************************************************** |
| 8 |
|
|
C |
| 9 |
|
|
C PURPOSE |
| 10 |
|
|
C To implement Rayleigh Friction |
| 11 |
|
|
C |
| 12 |
|
|
C ARGUMENTS DESCRIPTION |
| 13 |
|
|
C MYID .... PROCESS(OR) NUMBER |
| 14 |
|
|
C PRES .... VALUE OF MID-LEVEL PRESSURE |
| 15 |
|
|
C PZ ...... VALUE OF SURFACE PRESSURE - PTOP |
| 16 |
|
|
C UZ ...... VALUE OF U-WIND IN MODEL FOR N-1 TIME STEP |
| 17 |
|
|
C VZ ...... VALUE OF V-WIND IN MODEL FOR N-1 TIME STEP |
| 18 |
|
|
C IM ...... NUMBER OF LONGITUDE POINTS IN MODEL |
| 19 |
|
|
C JM ...... NUMBER OF LATITUDE POINTS IN MODEL |
| 20 |
|
|
C LM ...... NUMBER OF VERTICAL LEVELS IN MODEL |
| 21 |
|
|
C BI ...... X-DIRECTION PROCESSOR INDEX |
| 22 |
|
|
C BJ ...... Y-DIRECTION PROCESSOR INDEX |
| 23 |
|
|
C RFU ..... VALUE OF U-WIND TENDENCY |
| 24 |
|
|
C RFV ..... VALUE OF V-WIND TENDENCY |
| 25 |
|
|
C RFT ..... VALUE OF THETA TENDENCY |
| 26 |
|
|
C |
| 27 |
|
|
C ********************************************************************** |
| 28 |
|
|
|
| 29 |
|
|
implicit none |
| 30 |
|
|
|
| 31 |
|
|
#ifdef ALLOW_DIAGNOSTICS |
| 32 |
|
|
#include "SIZE.h" |
| 33 |
|
|
#include "diagnostics_SIZE.h" |
| 34 |
|
|
#include "diagnostics.h" |
| 35 |
|
|
#endif |
| 36 |
|
|
|
| 37 |
|
|
integer myid,im,jm,lm,bi,bj |
| 38 |
|
|
|
| 39 |
|
|
real psurf(im,jm) |
| 40 |
|
|
real pres(im,jm,lm) |
| 41 |
|
|
real preskappa(im,jm,lm) |
| 42 |
|
|
real u(im,jm,lm) |
| 43 |
|
|
real v(im,jm,lm) |
| 44 |
|
|
real rfu(im,jm,lm) |
| 45 |
|
|
real rfv(im,jm,lm) |
| 46 |
|
|
real rft(im,jm,lm) |
| 47 |
|
|
|
| 48 |
|
|
integer i,j,L |
| 49 |
|
|
real rf(im,jm,lm) |
| 50 |
|
|
real z(im,jm,lm) |
| 51 |
|
|
real z1(im,jm,lm) |
| 52 |
|
|
real z2(im,jm,lm) |
| 53 |
|
|
real cpinv, getcon |
| 54 |
|
|
|
| 55 |
|
|
C ********************************************************************** |
| 56 |
|
|
C **** APPLY RAYLEIGH FRICTION TO WIND TENDENCIES *** |
| 57 |
|
|
C ********************************************************************** |
| 58 |
|
|
|
| 59 |
|
|
cpinv = 1.0/getcon('CP') |
| 60 |
|
|
|
| 61 |
|
|
do L=1,lm |
| 62 |
|
|
|
| 63 |
|
|
do j=1,jm |
| 64 |
|
|
do i=1,im |
| 65 |
|
|
|
| 66 |
|
|
z1(i,j,L) = -7e2*log(pres(i,j,1)/psurf(i,j)) |
| 67 |
|
|
z2(i,j,L) = -7e3*log(pres(i,j,2)/psurf(i,j)) |
| 68 |
|
|
z(i,j,L) = -7e3*log(pres(i,j,L)/psurf(i,j)) |
| 69 |
|
|
rf(i,j,L) = 0.40*(1+tanh((z(i,j,L)-z2(i,j,L))/z1(i,j,L)))/86400 |
| 70 |
|
|
|
| 71 |
|
|
rfu(i,j,L) = - rf(i,j,L) * u(i,j,L) |
| 72 |
|
|
rfv(i,j,L) = - rf(i,j,L) * v(i,j,L) |
| 73 |
|
|
rft(i,j,L) = -(u(i,j,L)*rfu(i,j,L) + v(i,j,L)*rfv(i,j,L) )*cpinv |
| 74 |
|
|
. /preskappa(i,j,L) |
| 75 |
|
|
|
| 76 |
|
|
enddo |
| 77 |
|
|
enddo |
| 78 |
|
|
|
| 79 |
|
|
if( irfu.ne.0 ) then |
| 80 |
|
|
do j=1,jm |
| 81 |
|
|
do i=1,im |
| 82 |
|
|
qdiag(i,j,irfu+L-1,bi,bj) = qdiag(i,j,irfu+L-1,bi,bj) + |
| 83 |
|
|
. rfu(i,j,L)*86400 |
| 84 |
|
|
enddo |
| 85 |
|
|
enddo |
| 86 |
|
|
endif |
| 87 |
|
|
|
| 88 |
|
|
if( irfv.ne.0 ) then |
| 89 |
|
|
do j=1,jm |
| 90 |
|
|
do i=1,im |
| 91 |
|
|
qdiag(i,j,irfv+L-1,bi,bj) = qdiag(i,j,irfv+L-1,bi,bj) + |
| 92 |
|
|
. rfv(i,j,L)*86400 |
| 93 |
|
|
enddo |
| 94 |
|
|
enddo |
| 95 |
|
|
endif |
| 96 |
|
|
|
| 97 |
|
|
if( irft.ne.0 ) then |
| 98 |
|
|
do j=1,jm |
| 99 |
|
|
do i=1,im |
| 100 |
|
|
qdiag(i,j,irft+L-1,bi,bj) = qdiag(i,j,irft+L-1,bi,bj) + |
| 101 |
|
|
. rft(i,j,L)*86400 |
| 102 |
|
|
enddo |
| 103 |
|
|
enddo |
| 104 |
|
|
endif |
| 105 |
|
|
|
| 106 |
|
|
enddo |
| 107 |
|
|
|
| 108 |
|
|
nrfu = nrfu + 1 |
| 109 |
|
|
nrfv = nrfv + 1 |
| 110 |
|
|
nrft = nrft + 1 |
| 111 |
|
|
|
| 112 |
|
|
return |
| 113 |
|
|
end |
Parent Directory
| 
Revision Log
| 
Revision Graph