/[MITgcm]/MITgcm/pkg/fizhi/fizhi_rayleigh.F
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Revision 1.9 - (hide annotations) (download)
Thu Aug 3 23:29:02 2006 UTC (17 years, 11 months ago) by molod
Branch: MAIN
CVS Tags: checkpoint64y, checkpoint64x, checkpoint64z, checkpoint64q, checkpoint64p, checkpoint64s, checkpoint64r, checkpoint64u, checkpoint64t, checkpoint64w, checkpoint64v, checkpoint64i, checkpoint64h, checkpoint64k, checkpoint64j, checkpoint64m, checkpoint64l, checkpoint64o, checkpoint64n, checkpoint64a, checkpoint64c, checkpoint64b, checkpoint64e, checkpoint64d, checkpoint64g, checkpoint64f, checkpoint58u_post, checkpoint58w_post, checkpoint63p, checkpoint63q, checkpoint63r, checkpoint63s, checkpoint63l, checkpoint63m, checkpoint63n, checkpoint63o, checkpoint63h, checkpoint63i, checkpoint63j, checkpoint63k, checkpoint63d, checkpoint63e, checkpoint63f, checkpoint63g, checkpoint63a, checkpoint63b, checkpoint63c, checkpoint64, checkpoint65, checkpoint60, checkpoint61, checkpoint62, checkpoint63, checkpoint58r_post, checkpoint66g, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, checkpoint66n, checkpoint66m, checkpoint66l, checkpoint66k, checkpoint66j, checkpoint66i, checkpoint66h, checkpoint58n_post, checkpoint58x_post, checkpoint58t_post, checkpoint65z, checkpoint65x, checkpoint65y, checkpoint65r, checkpoint65s, checkpoint65p, checkpoint65q, checkpoint65v, checkpoint65w, checkpoint65t, checkpoint65u, checkpoint65j, checkpoint65k, checkpoint65h, checkpoint65i, checkpoint65n, checkpoint65o, checkpoint65l, checkpoint65m, checkpoint65b, checkpoint65c, checkpoint65a, checkpoint65f, checkpoint65g, checkpoint65d, checkpoint65e, checkpoint58q_post, checkpoint59q, checkpoint59p, checkpoint59r, checkpoint59e, checkpoint59d, checkpoint59g, checkpoint59f, checkpoint59a, checkpoint59c, checkpoint59b, checkpoint59m, checkpoint59l, checkpoint59o, checkpoint59n, checkpoint59i, checkpoint59h, checkpoint59k, checkpoint59j, checkpoint59, checkpoint58o_post, checkpoint62c, checkpoint62b, checkpoint62a, checkpoint62g, checkpoint62f, checkpoint62e, checkpoint62d, checkpoint62k, checkpoint62j, checkpoint62i, checkpoint62h, checkpoint62o, checkpoint62n, checkpoint62m, checkpoint62l, checkpoint62s, checkpoint62r, checkpoint62q, checkpoint62p, checkpoint62w, checkpoint62v, checkpoint62u, checkpoint62t, checkpoint62z, checkpoint62y, checkpoint62x, checkpoint58y_post, checkpoint58v_post, checkpoint58s_post, checkpoint61f, checkpoint61g, checkpoint61d, checkpoint61e, checkpoint61b, checkpoint61c, checkpoint58p_post, checkpoint61a, checkpoint61n, checkpoint61o, checkpoint61l, checkpoint61m, checkpoint61j, checkpoint61k, checkpoint61h, checkpoint61i, checkpoint61v, checkpoint61w, checkpoint61t, checkpoint61u, checkpoint61r, checkpoint61s, checkpoint61p, checkpoint61q, checkpoint61z, checkpoint61x, checkpoint61y, HEAD
Changes since 1.8: +4 -4 lines 
disable RF diagnostics in this routine
1 molod 1.9 C $Header: /u/gcmpack/MITgcm/pkg/fizhi/fizhi_rayleigh.F,v 1.8 2005/05/21 23:50:13 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     integer myid,im,jm,lm,bi,bj
39 molod 1.4 _RL zsurf(im,jm),pres(im,jm,lm),pkap(im,jm,lm)
40     _RL pekap(im,jm,lm+1)
41 molod 1.2 _RL u(im,jm,lm),v(im,jm,lm),t(im,jm,lm),s(im,jm,lm)
42     _RL rfu(im,jm,lm),rfv(im,jm,lm),rft(im,jm,lm)
43 molod 1.1
44     integer i,j,L
45 molod 1.2 _RL rf(im,jm,lm)
46     _RL z(im,jm,lm)
47     _RL dz(im,jm,lm)
48 molod 1.3 _RL cpog, cpinv, virtcon, getcon, dampcoef
49 molod 1.8 #ifdef ALLOW_DIAGNOSTICS
50     logical diagnostics_is_on
51     external diagnostics_is_on
52     _RL tmpdiag(im,jm)
53     #endif
54 molod 1.1
55     C **********************************************************************
56 molod 1.2 C **** APPLY RAYLEIGH FRICTION TO WIND (INCLUDE HEATING) ***
57 molod 1.1 C **********************************************************************
58    
59 molod 1.2 cpog = getcon('CP')/getcon('GRAVITY')
60 molod 1.1 cpinv = 1.0/getcon('CP')
61 molod 1.2 virtcon = getcon('VIRTCON')
62 molod 1.3 dampcoef = 2./3.
63 molod 1.1
64 molod 1.2 do L=1,lm
65     do j=1,jm
66     do i=1,im
67     dz(i,j,L) = cpog * (pekap(i,j,L+1)-pekap(i,j,L)) * t(i,j,L) *
68     . (1.+virtcon*s(i,j,L))
69     enddo
70     enddo
71 molod 1.1 enddo
72    
73     do j=1,jm
74     do i=1,im
75 molod 1.2 z(i,j,lm) = zsurf(i,j) + 0.5 * dz(i,j,lm)
76 molod 1.1 enddo
77     enddo
78    
79 molod 1.2 do L=lm-1,1,-1
80     do j=1,jm
81     do i=1,im
82     z(i,j,L) = z(i,j,L+1) + 0.5 * (dz(i,j,L)+dz(i,j,L+1))
83     enddo
84     enddo
85 molod 1.1 enddo
86    
87 molod 1.2 do L=1,lm
88     do j=1,jm
89     do i=1,im
90 molod 1.6 rf(i,j,L) = dampcoef*(1+tanh((z(i,j,L)-50000.)/5000.))/86400.
91 molod 1.2 rfu(i,j,L) = - rf(i,j,L) * u(i,j,L)
92     rfv(i,j,L) = - rf(i,j,L) * v(i,j,L)
93     rft(i,j,L) = -(u(i,j,L)*rfu(i,j,L) + v(i,j,L)*rfv(i,j,L) )*cpinv
94     . /pkap(i,j,L)
95     enddo
96     enddo
97 molod 1.1 enddo
98    
99 molod 1.2 #ifdef ALLOW_DIAGNOSTICS
100     do L=1,lm
101 molod 1.8
102     if(diagnostics_is_on('RFU ',myid) ) then
103 molod 1.2 do j=1,jm
104     do i=1,im
105 molod 1.8 tmpdiag(i,j) = rfu(i,j,L)*86400
106 molod 1.2 enddo
107     enddo
108 molod 1.9 C call diagnostics_fill(tmpdiag,'RFU ',L,1,3,bi,bj,myid)
109 molod 1.8 endif
110 molod 1.2
111 molod 1.8 if(diagnostics_is_on('RFV ',myid) ) then
112 molod 1.2 do j=1,jm
113     do i=1,im
114 molod 1.8 tmpdiag(i,j) = rfv(i,j,L)*86400
115 molod 1.2 enddo
116     enddo
117 molod 1.9 C call diagnostics_fill(tmpdiag,'RFV ',L,1,3,bi,bj,myid)
118 molod 1.8 endif
119 molod 1.2
120 molod 1.8 if(diagnostics_is_on('RFT ',myid) ) then
121 molod 1.2 do j=1,jm
122     do i=1,im
123 molod 1.8 tmpdiag(i,j) = rft(i,j,L)*86400
124 molod 1.2 enddo
125     enddo
126 molod 1.9 C call diagnostics_fill(tmpdiag,'RFT ',L,1,3,bi,bj,myid)
127 molod 1.8 endif
128    
129 molod 1.1 enddo
130 molod 1.2 #endif
131 molod 1.1
132     return
133     end
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