/[MITgcm]/MITgcm_contrib/eh3/regrid/hs94.cs-32x32x5/code/external_forcing.F
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Revision 1.1 - (hide annotations) (download)
Thu Aug 10 05:00:14 2006 UTC (18 years, 11 months ago) by edhill
Branch: MAIN
CVS Tags: HEAD
initial ci

1 edhill 1.1 C $Header: /u/gcmpack/MITgcm/verification/hs94.cs-32x32x5/code/external_forcing.F,v 1.6 2005/07/17 18:40:10 jmc Exp $
2     C $Name: $
3    
4     #include "CPP_OPTIONS.h"
5    
6     CBOP
7     C !ROUTINE: EXTERNAL_FORCING_U
8     C !INTERFACE:
9     SUBROUTINE EXTERNAL_FORCING_U(
10     I iMin,iMax, jMin,jMax, bi,bj, kLev,
11     I myTime, myThid )
12     C !DESCRIPTION: \bv
13     C *==========================================================*
14     C | S/R EXTERNAL_FORCING_U
15     C | o Contains problem specific forcing for zonal velocity.
16     C *==========================================================*
17     C | Adds terms to gU for forcing by external sources
18     C | e.g. wind stress, bottom friction etc ...
19     C *==========================================================*
20     C \ev
21    
22     C !USES:
23     IMPLICIT NONE
24     C == Global data ==
25     #include "SIZE.h"
26     #include "EEPARAMS.h"
27     #include "PARAMS.h"
28     #include "GRID.h"
29     #include "DYNVARS.h"
30     #include "FFIELDS.h"
31    
32     C !INPUT/OUTPUT PARAMETERS:
33     C == Routine arguments ==
34     C iMin,iMax :: Working range of x-index for applying forcing.
35     C jMin,jMax :: Working range of y-index for applying forcing.
36     C bi,bj :: Current tile indices
37     C kLev :: Current vertical level index
38     C myTime :: Current time in simulation
39     C myThid :: Thread Id number
40     INTEGER iMin, iMax, jMin, jMax, kLev, bi, bj
41     _RL myTime
42     INTEGER myThid
43    
44     C !LOCAL VARIABLES:
45     C == Local variables ==
46     C i,j :: Loop counters
47     INTEGER i, j
48     CEOP
49     _RL recip_P0g, termP, kV, kF, sigma_b
50    
51     C-- Forcing term(s)
52     kF=1. _d 0/86400. _d 0
53     sigma_b = 0.7 _d 0
54     c DO j=1,sNy
55     C-jmc: Without CD-scheme, this is OK ; but with CD-scheme, needs to cover [0:sNy+1]
56     DO j=0,sNy+1
57     DO i=1,sNx+1
58     IF ( hFacW(i,j,kLev,bi,bj) .GT. 0. ) THEN
59     recip_P0g=MAX(recip_Rcol(i,j,bi,bj),recip_Rcol(i-1,j,bi,bj))
60     termP=0.5 _d 0*( MIN(rF(kLev)*recip_P0g,1. _d 0)
61     & +rF(kLev+1)*recip_P0g )
62     c termP=0.5 _d 0*( rF(kLev) + rF(kLev+1) )*recip_P0g
63     kV=kF*MAX( 0. _d 0, (termP-sigma_b)/(1. _d 0-sigma_b) )
64     gU(i,j,kLev,bi,bj)=gU(i,j,kLev,bi,bj)
65     & -kV*uVel(i,j,kLev,bi,bj)
66     ENDIF
67     ENDDO
68     ENDDO
69    
70     RETURN
71     END
72    
73     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
74     CBOP
75     C !ROUTINE: EXTERNAL_FORCING_V
76     C !INTERFACE:
77     SUBROUTINE EXTERNAL_FORCING_V(
78     I iMin,iMax, jMin,jMax, bi,bj, kLev,
79     I myTime, myThid )
80     C !DESCRIPTION: \bv
81     C *==========================================================*
82     C | S/R EXTERNAL_FORCING_V
83     C | o Contains problem specific forcing for merid velocity.
84     C *==========================================================*
85     C | Adds terms to gV for forcing by external sources
86     C | e.g. wind stress, bottom friction etc ...
87     C *==========================================================*
88     C \ev
89    
90     C !USES:
91     IMPLICIT NONE
92     C == Global data ==
93     #include "SIZE.h"
94     #include "EEPARAMS.h"
95     #include "PARAMS.h"
96     #include "GRID.h"
97     #include "DYNVARS.h"
98     #include "FFIELDS.h"
99    
100     C !INPUT/OUTPUT PARAMETERS:
101     C == Routine arguments ==
102     C iMin,iMax :: Working range of x-index for applying forcing.
103     C jMin,jMax :: Working range of y-index for applying forcing.
104     C bi,bj :: Current tile indices
105     C kLev :: Current vertical level index
106     C myTime :: Current time in simulation
107     C myThid :: Thread Id number
108     INTEGER iMin, iMax, jMin, jMax, kLev, bi, bj
109     _RL myTime
110     INTEGER myThid
111    
112     C !LOCAL VARIABLES:
113     C == Local variables ==
114     C i,j :: Loop counters
115     INTEGER i, j
116     CEOP
117     _RL recip_P0g, termP, kV, kF, sigma_b
118    
119     C-- Forcing term(s)
120     kF=1. _d 0/86400. _d 0
121     sigma_b = 0.7 _d 0
122     DO j=1,sNy+1
123     c DO i=1,sNx
124     C-jmc: Without CD-scheme, this is OK ; but with CD-scheme, needs to cover [0:sNx+1]
125     DO i=0,sNx+1
126     IF ( hFacS(i,j,kLev,bi,bj) .GT. 0. ) THEN
127     recip_P0g=MAX(recip_Rcol(i,j,bi,bj),recip_Rcol(i,j-1,bi,bj))
128     termP=0.5 _d 0*( MIN(rF(kLev)*recip_P0g,1. _d 0)
129     & +rF(kLev+1)*recip_P0g )
130     c termP=0.5 _d 0*( rF(kLev) + rF(kLev+1) )*recip_P0g
131     kV=kF*MAX( 0. _d 0, (termP-sigma_b)/(1. _d 0-sigma_b) )
132     gV(i,j,kLev,bi,bj)=gV(i,j,kLev,bi,bj)
133     & -kV*vVel(i,j,kLev,bi,bj)
134     ENDIF
135     ENDDO
136     ENDDO
137    
138     RETURN
139     END
140    
141     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
142     CBOP
143     C !ROUTINE: EXTERNAL_FORCING_T
144     C !INTERFACE:
145     SUBROUTINE EXTERNAL_FORCING_T(
146     I iMin,iMax, jMin,jMax, bi,bj, kLev,
147     I myTime, myThid )
148     C !DESCRIPTION: \bv
149     C *==========================================================*
150     C | S/R EXTERNAL_FORCING_T
151     C | o Contains problem specific forcing for temperature.
152     C *==========================================================*
153     C | Adds terms to gT for forcing by external sources
154     C | e.g. heat flux, climatalogical relaxation, etc ...
155     C *==========================================================*
156     C \ev
157    
158     C !USES:
159     IMPLICIT NONE
160     C == Global data ==
161     #include "SIZE.h"
162     #include "EEPARAMS.h"
163     #include "PARAMS.h"
164     #include "GRID.h"
165     #include "DYNVARS.h"
166     #include "FFIELDS.h"
167    
168     C !INPUT/OUTPUT PARAMETERS:
169     C == Routine arguments ==
170     C iMin,iMax :: Working range of x-index for applying forcing.
171     C jMin,jMax :: Working range of y-index for applying forcing.
172     C bi,bj :: Current tile indices
173     C kLev :: Current vertical level index
174     C myTime :: Current time in simulation
175     C myThid :: Thread Id number
176     INTEGER iMin, iMax, jMin, jMax, kLev, bi, bj
177     _RL myTime
178     INTEGER myThid
179    
180     C !LOCAL VARIABLES:
181     C == Local variables ==
182     C i,j :: Loop counters
183     INTEGER i, j
184     CEOP
185     _RL thetaLim,kT,ka,ks,sigma_b,term1,term2,thetaEq,termP
186    
187     C-- Forcing term(s)
188     ka=1. _d 0/(40. _d 0*86400. _d 0)
189     ks=1. _d 0/(4. _d 0 *86400. _d 0)
190     sigma_b = 0.7 _d 0
191     DO j=1,sNy
192     DO i=1,sNx
193     term1=60. _d 0*(SIN(yC(i,j,bi,bj)*deg2rad)**2)
194     termP=0.5 _d 0*( rF(kLev) + rF(kLev+1) )
195     term2=10. _d 0*LOG(termP/atm_po)
196     & *(COS(yC(i,j,bi,bj)*deg2rad)**2)
197     thetaLim = 200. _d 0/ ((termP/atm_po)**atm_kappa)
198     thetaEq=315. _d 0-term1-term2
199     thetaEq=MAX(thetaLim,thetaEq)
200     termP=0.5 _d 0*( MIN(rF(kLev),Ro_surf(i,j,bi,bj))+rF(kLev+1) )
201     kT=ka+(ks-ka)
202     & *MAX(0. _d 0,
203     & (termP*recip_Rcol(i,j,bi,bj)-sigma_b)/(1. _d 0-sigma_b) )
204     & *COS((yC(i,j,bi,bj)*deg2rad))**4
205     gT(i,j,kLev,bi,bj)=gT(i,j,kLev,bi,bj)
206     & - kT*( theta(i,j,kLev,bi,bj)-thetaEq )
207     & *maskC(i,j,kLev,bi,bj)
208     ENDDO
209     ENDDO
210    
211     RETURN
212     END
213    
214     C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
215     CBOP
216     C !ROUTINE: EXTERNAL_FORCING_S
217     C !INTERFACE:
218     SUBROUTINE EXTERNAL_FORCING_S(
219     I iMin,iMax, jMin,jMax, bi,bj, kLev,
220     I myTime, myThid )
221    
222     C !DESCRIPTION: \bv
223     C *==========================================================*
224     C | S/R EXTERNAL_FORCING_S
225     C | o Contains problem specific forcing for merid velocity.
226     C *==========================================================*
227     C | Adds terms to gS for forcing by external sources
228     C | e.g. fresh-water flux, climatalogical relaxation, etc ...
229     C *==========================================================*
230     C \ev
231    
232     C !USES:
233     IMPLICIT NONE
234     C == Global data ==
235     #include "SIZE.h"
236     #include "EEPARAMS.h"
237     #include "PARAMS.h"
238     #include "GRID.h"
239     #include "DYNVARS.h"
240     #include "FFIELDS.h"
241    
242     C !INPUT/OUTPUT PARAMETERS:
243     C == Routine arguments ==
244     C iMin,iMax :: Working range of x-index for applying forcing.
245     C jMin,jMax :: Working range of y-index for applying forcing.
246     C bi,bj :: Current tile indices
247     C kLev :: Current vertical level index
248     C myTime :: Current time in simulation
249     C myThid :: Thread Id number
250     INTEGER iMin, iMax, jMin, jMax, kLev, bi, bj
251     _RL myTime
252     INTEGER myThid
253    
254     C !LOCAL VARIABLES:
255     C == Local variables ==
256     C i,j :: Loop counters
257     c INTEGER i, j
258     CEOP
259    
260     C-- Forcing term(s)
261    
262     RETURN
263     END

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