| 1 |
molod |
1.5 |
C $Header: /u/gcmpack/MITgcm/pkg/fizhi/fizhi_rayleigh.F,v 1.4 2004/10/22 17:56:03 molod Exp $ |
| 2 |
molod |
1.1 |
C $Name: $ |
| 3 |
molod |
1.3 |
|
| 4 |
molod |
1.1 |
#include "FIZHI_OPTIONS.h" |
| 5 |
molod |
1.2 |
subroutine rayleigh(myid,pres,pkap,pekap,zsurf,u,v,t,s,im,jm,lm, |
| 6 |
|
|
. bi,bj,rfu,rfv,rft) |
| 7 |
molod |
1.1 |
C ********************************************************************** |
| 8 |
|
|
C |
| 9 |
|
|
C PURPOSE |
| 10 |
molod |
1.3 |
C Rayleigh Friction -- Linear Drag (Strong Damping) Above 70 Km |
| 11 |
molod |
1.1 |
C |
| 12 |
|
|
C ARGUMENTS DESCRIPTION |
| 13 |
molod |
1.2 |
C |
| 14 |
|
|
C INPUT: |
| 15 |
molod |
1.1 |
C MYID .... PROCESS(OR) NUMBER |
| 16 |
molod |
1.2 |
C PRES .... MID-LEVEL PRESSURE IN MB |
| 17 |
|
|
C PKAP .... MID-LEVEL PRESSURE ** KAPPA |
| 18 |
|
|
C PEKAP ... EDGE-LEVEL PRESSURE ** KAPPA |
| 19 |
|
|
C ZSURF ... SURFACE ELEVATION IN M |
| 20 |
|
|
C U ....... U-WIND |
| 21 |
|
|
C V ....... V-WIND |
| 22 |
|
|
C TH ...... THETA (ACTUALLY REAL THETA * P0**KAPPA) IN K |
| 23 |
|
|
C S ...... SPECIFIC HUMIDITY (KG/KG) |
| 24 |
|
|
C IM ...... NUMBER OF LONGITUDE POINTS |
| 25 |
|
|
C JM ...... NUMBER OF LATITUDE POINTS |
| 26 |
|
|
C LM ...... NUMBER OF VERTICAL LEVELS |
| 27 |
molod |
1.1 |
C BI ...... X-DIRECTION PROCESSOR INDEX |
| 28 |
|
|
C BJ ...... Y-DIRECTION PROCESSOR INDEX |
| 29 |
molod |
1.2 |
C OUTPUT: |
| 30 |
|
|
C RFU ..... U-WIND TENDENCY |
| 31 |
|
|
C RFV ..... V-WIND TENDENCY |
| 32 |
|
|
C RFT ..... THETA TENDENCY |
| 33 |
molod |
1.1 |
C |
| 34 |
|
|
C ********************************************************************** |
| 35 |
|
|
|
| 36 |
|
|
implicit none |
| 37 |
|
|
|
| 38 |
|
|
#ifdef ALLOW_DIAGNOSTICS |
| 39 |
|
|
#include "SIZE.h" |
| 40 |
|
|
#include "diagnostics_SIZE.h" |
| 41 |
|
|
#include "diagnostics.h" |
| 42 |
|
|
#endif |
| 43 |
|
|
|
| 44 |
|
|
integer myid,im,jm,lm,bi,bj |
| 45 |
molod |
1.4 |
_RL zsurf(im,jm),pres(im,jm,lm),pkap(im,jm,lm) |
| 46 |
|
|
_RL pekap(im,jm,lm+1) |
| 47 |
molod |
1.2 |
_RL u(im,jm,lm),v(im,jm,lm),t(im,jm,lm),s(im,jm,lm) |
| 48 |
|
|
_RL rfu(im,jm,lm),rfv(im,jm,lm),rft(im,jm,lm) |
| 49 |
molod |
1.1 |
|
| 50 |
|
|
integer i,j,L |
| 51 |
molod |
1.2 |
_RL rf(im,jm,lm) |
| 52 |
|
|
_RL z(im,jm,lm) |
| 53 |
|
|
_RL dz(im,jm,lm) |
| 54 |
molod |
1.3 |
_RL cpog, cpinv, virtcon, getcon, dampcoef |
| 55 |
molod |
1.1 |
|
| 56 |
|
|
C ********************************************************************** |
| 57 |
molod |
1.2 |
C **** APPLY RAYLEIGH FRICTION TO WIND (INCLUDE HEATING) *** |
| 58 |
molod |
1.1 |
C ********************************************************************** |
| 59 |
|
|
|
| 60 |
molod |
1.2 |
cpog = getcon('CP')/getcon('GRAVITY') |
| 61 |
molod |
1.1 |
cpinv = 1.0/getcon('CP') |
| 62 |
molod |
1.2 |
virtcon = getcon('VIRTCON') |
| 63 |
molod |
1.3 |
dampcoef = 2./3. |
| 64 |
molod |
1.1 |
|
| 65 |
molod |
1.2 |
do L=1,lm |
| 66 |
|
|
do j=1,jm |
| 67 |
|
|
do i=1,im |
| 68 |
|
|
dz(i,j,L) = cpog * (pekap(i,j,L+1)-pekap(i,j,L)) * t(i,j,L) * |
| 69 |
|
|
. (1.+virtcon*s(i,j,L)) |
| 70 |
|
|
enddo |
| 71 |
|
|
enddo |
| 72 |
molod |
1.1 |
enddo |
| 73 |
|
|
|
| 74 |
|
|
do j=1,jm |
| 75 |
|
|
do i=1,im |
| 76 |
molod |
1.2 |
z(i,j,lm) = zsurf(i,j) + 0.5 * dz(i,j,lm) |
| 77 |
molod |
1.1 |
enddo |
| 78 |
|
|
enddo |
| 79 |
|
|
|
| 80 |
molod |
1.2 |
do L=lm-1,1,-1 |
| 81 |
|
|
do j=1,jm |
| 82 |
|
|
do i=1,im |
| 83 |
|
|
z(i,j,L) = z(i,j,L+1) + 0.5 * (dz(i,j,L)+dz(i,j,L+1)) |
| 84 |
|
|
enddo |
| 85 |
|
|
enddo |
| 86 |
molod |
1.1 |
enddo |
| 87 |
|
|
|
| 88 |
molod |
1.2 |
do L=1,lm |
| 89 |
|
|
do j=1,jm |
| 90 |
|
|
do i=1,im |
| 91 |
molod |
1.3 |
rf(i,j,L) = dampcoef*(1+tanh((z(i,j,L)-80000.)/5000.))/86400. |
| 92 |
molod |
1.2 |
rfu(i,j,L) = - rf(i,j,L) * u(i,j,L) |
| 93 |
|
|
rfv(i,j,L) = - rf(i,j,L) * v(i,j,L) |
| 94 |
|
|
rft(i,j,L) = -(u(i,j,L)*rfu(i,j,L) + v(i,j,L)*rfv(i,j,L) )*cpinv |
| 95 |
|
|
. /pkap(i,j,L) |
| 96 |
|
|
enddo |
| 97 |
|
|
enddo |
| 98 |
molod |
1.1 |
enddo |
| 99 |
|
|
|
| 100 |
molod |
1.2 |
#ifdef ALLOW_DIAGNOSTICS |
| 101 |
|
|
do L=1,lm |
| 102 |
|
|
if( irfu.ne.0 ) then |
| 103 |
|
|
do j=1,jm |
| 104 |
|
|
do i=1,im |
| 105 |
|
|
qdiag(i,j,irfu+L-1,bi,bj) = qdiag(i,j,irfu+L-1,bi,bj) + |
| 106 |
|
|
. rfu(i,j,L)*86400 |
| 107 |
|
|
enddo |
| 108 |
|
|
enddo |
| 109 |
|
|
endif |
| 110 |
|
|
|
| 111 |
|
|
if( irfv.ne.0 ) then |
| 112 |
|
|
do j=1,jm |
| 113 |
|
|
do i=1,im |
| 114 |
|
|
qdiag(i,j,irfv+L-1,bi,bj) = qdiag(i,j,irfv+L-1,bi,bj) + |
| 115 |
|
|
. rfv(i,j,L)*86400 |
| 116 |
|
|
enddo |
| 117 |
|
|
enddo |
| 118 |
|
|
endif |
| 119 |
|
|
|
| 120 |
|
|
if( irft.ne.0 ) then |
| 121 |
|
|
do j=1,jm |
| 122 |
|
|
do i=1,im |
| 123 |
|
|
qdiag(i,j,irft+L-1,bi,bj) = qdiag(i,j,irft+L-1,bi,bj) + |
| 124 |
|
|
. rft(i,j,L)*86400 |
| 125 |
|
|
enddo |
| 126 |
|
|
enddo |
| 127 |
|
|
endif |
| 128 |
molod |
1.1 |
enddo |
| 129 |
molod |
1.2 |
#endif |
| 130 |
molod |
1.1 |
|
| 131 |
molod |
1.2 |
#ifdef ALLOW_DIAGNOSTICS |
| 132 |
|
|
if( (bi.eq.1) .and. (bj.eq.1) ) then |
| 133 |
|
|
nrfu = nrfu + 1 |
| 134 |
|
|
nrfv = nrfv + 1 |
| 135 |
|
|
nrft = nrft + 1 |
| 136 |
|
|
endif |
| 137 |
|
|
#endif |
| 138 |
molod |
1.1 |
|
| 139 |
|
|
return |
| 140 |
|
|
end |
Parent Directory
| 
Revision Log
| 
Revision Graph