1 |
C $Header: /u/gcmpack/MITgcm/pkg/exf/exf_wind.F,v 1.17 2017/01/27 17:22:55 jmc Exp $ |
2 |
C $Name: $ |
3 |
|
4 |
#include "EXF_OPTIONS.h" |
5 |
#ifdef ALLOW_CTRL |
6 |
# include "CTRL_OPTIONS.h" |
7 |
#endif |
8 |
#ifdef ALLOW_AUTODIFF |
9 |
# include "AUTODIFF_OPTIONS.h" |
10 |
#endif |
11 |
|
12 |
SUBROUTINE EXF_WIND( myTime, myIter, myThid ) |
13 |
|
14 |
C ================================================================== |
15 |
C SUBROUTINE exf_wind |
16 |
C ================================================================== |
17 |
C |
18 |
C o Prepare wind speed and stress fields |
19 |
C |
20 |
C ================================================================== |
21 |
C SUBROUTINE exf_wind |
22 |
C ================================================================== |
23 |
|
24 |
IMPLICIT NONE |
25 |
|
26 |
C == global variables == |
27 |
|
28 |
#include "SIZE.h" |
29 |
#include "EEPARAMS.h" |
30 |
#include "PARAMS.h" |
31 |
|
32 |
#include "EXF_PARAM.h" |
33 |
#include "EXF_FIELDS.h" |
34 |
#include "EXF_CONSTANTS.h" |
35 |
|
36 |
#ifdef ALLOW_AUTODIFF_TAMC |
37 |
#include "tamc.h" |
38 |
#include "tamc_keys.h" |
39 |
#endif |
40 |
#ifdef ALLOW_GENTIM2D_CONTROL |
41 |
# include "ctrl.h" |
42 |
# include "optim.h" |
43 |
# include "CTRL_SIZE.h" |
44 |
# include "CTRL_GENARR.h" |
45 |
#endif |
46 |
|
47 |
C == routine arguments == |
48 |
|
49 |
_RL myTime |
50 |
INTEGER myIter |
51 |
INTEGER myThid |
52 |
|
53 |
C == external functions == |
54 |
|
55 |
C == local variables == |
56 |
|
57 |
INTEGER bi,bj |
58 |
INTEGER i,j |
59 |
_RL wsLoc(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
60 |
_RL wsSq |
61 |
#ifdef ALLOW_BULKFORMULAE |
62 |
_RL usSq, recip_sqrtRhoA, ustar |
63 |
_RL tmp1, tmp2, tmp3, tmp4 |
64 |
#endif /* ALLOW_BULKFORMULAE */ |
65 |
_RL oneThirdRL |
66 |
PARAMETER ( oneThirdRL = 1.d0 / 3.d0 ) |
67 |
#if !(defined ALLOW_BULKFORMULAE) || !(defined ALLOW_ATM_TEMP) |
68 |
_RL wsm, tmpbulk |
69 |
#endif |
70 |
#ifdef ALLOW_GENTIM2D_CONTROL |
71 |
INTEGER iarr |
72 |
#endif |
73 |
C == end of interface == |
74 |
|
75 |
C-- Use atmospheric state to compute surface fluxes. |
76 |
|
77 |
C Loop over tiles. |
78 |
DO bj = myByLo(myThid),myByHi(myThid) |
79 |
DO bi = myBxLo(myThid),myBxHi(myThid) |
80 |
|
81 |
#ifdef ALLOW_AUTODIFF_TAMC |
82 |
act1 = bi - myBxLo(myThid) |
83 |
max1 = myBxHi(myThid) - myBxLo(myThid) + 1 |
84 |
act2 = bj - myByLo(myThid) |
85 |
max2 = myByHi(myThid) - myByLo(myThid) + 1 |
86 |
act3 = myThid - 1 |
87 |
max3 = nTx*nTy |
88 |
act4 = ikey_dynamics - 1 |
89 |
ikey = (act1 + 1) + act2*max1 |
90 |
& + act3*max1*max2 |
91 |
& + act4*max1*max2*max3 |
92 |
#endif /* ALLOW_AUTODIFF_TAMC */ |
93 |
|
94 |
C-- Initialise |
95 |
DO j = 1,sNy |
96 |
DO i = 1,sNx |
97 |
wsLoc(i,j) = 0. _d 0 |
98 |
cw(i,j,bi,bj) = 0. _d 0 |
99 |
sw(i,j,bi,bj) = 0. _d 0 |
100 |
sh(i,j,bi,bj) = 0. _d 0 |
101 |
wStress(i,j,bi,bj) = 0. _d 0 |
102 |
ENDDO |
103 |
ENDDO |
104 |
|
105 |
#ifdef ALLOW_AUTODIFF_TAMC |
106 |
CADJ STORE uwind (:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
107 |
CADJ STORE vwind (:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
108 |
CADJ STORE wspeed(:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
109 |
#endif |
110 |
|
111 |
IF ( useAtmWind ) THEN |
112 |
|
113 |
C-- Wind speed and direction. |
114 |
DO j = 1,sNy |
115 |
DO i = 1,sNx |
116 |
wsSq = uwind(i,j,bi,bj)*uwind(i,j,bi,bj) |
117 |
& + vwind(i,j,bi,bj)*vwind(i,j,bi,bj) |
118 |
IF ( wsSq .NE. 0. _d 0 ) THEN |
119 |
wsLoc(i,j) = SQRT(wsSq) |
120 |
cw(i,j,bi,bj) = uwind(i,j,bi,bj)/wsLoc(i,j) |
121 |
sw(i,j,bi,bj) = vwind(i,j,bi,bj)/wsLoc(i,j) |
122 |
ELSE |
123 |
wsLoc(i,j) = 0. _d 0 |
124 |
cw(i,j,bi,bj) = 0. _d 0 |
125 |
sw(i,j,bi,bj) = 0. _d 0 |
126 |
ENDIF |
127 |
ENDDO |
128 |
ENDDO |
129 |
IF ( wspeedfile .EQ. ' ' ) THEN |
130 |
C- wind-speed is not loaded from file: save local array into common block |
131 |
DO j = 1,sNy |
132 |
DO i = 1,sNx |
133 |
wspeed(i,j,bi,bj) = wsLoc(i,j) |
134 |
ENDDO |
135 |
ENDDO |
136 |
ENDIF |
137 |
|
138 |
#ifdef ALLOW_BULKFORMULAE |
139 |
ELSE |
140 |
C-- case useAtmWind=F |
141 |
|
142 |
C-- Wind stress and direction. |
143 |
DO j = 1,sNy |
144 |
DO i = 1,sNx |
145 |
IF ( stressIsOnCgrid ) THEN |
146 |
usSq = ( ustress(i, j,bi,bj)*ustress(i ,j,bi,bj) |
147 |
& +ustress(i+1,j,bi,bj)*ustress(i+1,j,bi,bj) |
148 |
& +vstress(i,j, bi,bj)*vstress(i,j ,bi,bj) |
149 |
& +vstress(i,j+1,bi,bj)*vstress(i,j+1,bi,bj) |
150 |
& )*0.5 _d 0 |
151 |
ELSE |
152 |
usSq = ustress(i,j,bi,bj)*ustress(i,j,bi,bj) |
153 |
& +vstress(i,j,bi,bj)*vstress(i,j,bi,bj) |
154 |
ENDIF |
155 |
IF ( usSq .NE. 0. _d 0 ) THEN |
156 |
wStress(i,j,bi,bj) = SQRT(usSq) |
157 |
c ustar = SQRT(usSq/atmrho) |
158 |
cw(i,j,bi,bj) = ustress(i,j,bi,bj)/wStress(i,j,bi,bj) |
159 |
sw(i,j,bi,bj) = vstress(i,j,bi,bj)/wStress(i,j,bi,bj) |
160 |
ELSE |
161 |
wStress(i,j,bi,bj) = 0. _d 0 |
162 |
cw(i,j,bi,bj) = 0. _d 0 |
163 |
sw(i,j,bi,bj) = 0. _d 0 |
164 |
ENDIF |
165 |
ENDDO |
166 |
ENDDO |
167 |
|
168 |
IF ( wspeedfile .EQ. ' ' ) THEN |
169 |
C-- wspeed is not loaded ; derive wind-speed by inversion of |
170 |
C wind-stress=fct(wind-speed) relation: |
171 |
C The variables us, sh and rdn have to be computed from |
172 |
C given wind stresses inverting relationship for neutral |
173 |
C drag coeff. cdn. |
174 |
C The inversion is based on linear and quadratic form of |
175 |
C cdn(umps); ustar can be directly computed from stress; |
176 |
recip_sqrtRhoA = 1. _d 0 / SQRT(atmrho) |
177 |
DO j = 1,sNy |
178 |
DO i = 1,sNx |
179 |
ustar = wStress(i,j,bi,bj)*recip_sqrtRhoA |
180 |
IF ( ustar .EQ. 0. _d 0 ) THEN |
181 |
wsLoc(i,j) = 0. _d 0 |
182 |
ELSE IF ( ustar .LT. ustofu11 ) THEN |
183 |
tmp1 = -cquadrag_2/cquadrag_1*exf_half |
184 |
tmp2 = SQRT(tmp1*tmp1 + ustar*ustar/cquadrag_1) |
185 |
wsLoc(i,j) = SQRT(tmp1 + tmp2) |
186 |
ELSE |
187 |
tmp1 = clindrag_2/clindrag_1*oneThirdRL |
188 |
tmp2 = ustar*ustar/clindrag_1*exf_half |
189 |
& - tmp1*tmp1*tmp1 |
190 |
tmp3 = SQRT( ustar*ustar/clindrag_1* |
191 |
& (ustar*ustar/clindrag_1*0.25 _d 0 - tmp1*tmp1*tmp1 ) |
192 |
& ) |
193 |
tmp4 = (tmp2 + tmp3)**oneThirdRL |
194 |
wsLoc(i,j) = tmp4 + tmp1*tmp1 / tmp4 - tmp1 |
195 |
c wsLoc(i,j) = (tmp2 + tmp3)**oneThirdRL + |
196 |
c & tmp1*tmp1 * (tmp2 + tmp3)**(-oneThirdRL) - tmp1 |
197 |
ENDIF |
198 |
ENDDO |
199 |
ENDDO |
200 |
C- save local array wind-speed to common block |
201 |
DO j = 1,sNy |
202 |
DO i = 1,sNx |
203 |
wspeed(i,j,bi,bj) = wsLoc(i,j) |
204 |
ENDDO |
205 |
ENDDO |
206 |
C- end if wspeedfile = empty |
207 |
ENDIF |
208 |
|
209 |
#ifdef ALLOW_AUTODIFF_TAMC |
210 |
CADJ STORE wspeed(:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
211 |
CADJ STORE uwind (:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
212 |
CADJ STORE vwind (:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
213 |
CADJ STORE cw (:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
214 |
CADJ STORE sw (:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
215 |
#endif |
216 |
|
217 |
C-- infer wind field from wind-speed & wind-stress direction |
218 |
DO j = 1,sNy |
219 |
DO i = 1,sNx |
220 |
uwind(i,j,bi,bj) = wspeed(i,j,bi,bj)*cw(i,j,bi,bj) |
221 |
vwind(i,j,bi,bj) = wspeed(i,j,bi,bj)*sw(i,j,bi,bj) |
222 |
ENDDO |
223 |
ENDDO |
224 |
|
225 |
#endif /* ALLOW_BULKFORMULAE */ |
226 |
C-- end if/else useAtmWind |
227 |
ENDIF |
228 |
|
229 |
#ifdef ALLOW_GENTIM2D_CONTROL |
230 |
DO j = 1,sNy |
231 |
DO i = 1,sNx |
232 |
do iarr = 1, maxCtrlTim2D |
233 |
if (xx_gentim2d_file(iarr)(1:9).EQ.'xx_wspeed') |
234 |
& wspeed(i,j,bi,bj)=wspeed(i,j,bi,bj)+ |
235 |
& xx_gentim2d(i,j,bi,bj,iarr) |
236 |
enddo |
237 |
ENDDO |
238 |
ENDDO |
239 |
#endif |
240 |
|
241 |
#ifdef ALLOW_AUTODIFF_TAMC |
242 |
CADJ STORE wspeed(:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte |
243 |
#endif |
244 |
|
245 |
C-- set wind-speed lower limit |
246 |
DO j = 1,sNy |
247 |
DO i = 1,sNx |
248 |
sh(i,j,bi,bj) = MAX(wspeed(i,j,bi,bj),uMin) |
249 |
ENDDO |
250 |
ENDDO |
251 |
|
252 |
#if !(defined ALLOW_BULKFORMULAE) || !(defined ALLOW_ATM_TEMP) |
253 |
C Note: In case ALLOW_BULKFORMULAE and ALLOW_ATM_TEMP are defined, |
254 |
C wind-stress is computed (if needed) within S/R EXF_BULKFORMULAE |
255 |
IF ( useAtmWind ) THEN |
256 |
c#ifdef ALLOW_ATM_WIND |
257 |
C-- Computes wind-stress: |
258 |
DO j = 1,sNy |
259 |
DO i = 1,sNx |
260 |
wsm = sh(i,j,bi,bj) |
261 |
tmpbulk = exf_scal_BulkCdn |
262 |
& * ( cdrag_1/wsm + cdrag_2 + cdrag_3*wsm ) |
263 |
ustress(i,j,bi,bj) = atmrho*tmpbulk*wspeed(i,j,bi,bj) |
264 |
& * uwind(i,j,bi,bj) |
265 |
vstress(i,j,bi,bj) = atmrho*tmpbulk*wspeed(i,j,bi,bj) |
266 |
& * vwind(i,j,bi,bj) |
267 |
ENDDO |
268 |
ENDDO |
269 |
c#else /* ALLOW_ATM_WIND */ |
270 |
c STOP 'ABNORMAL END: S/R EXF_WIND: missing code for useAtmWind' |
271 |
c#endif /* ALLOW_ATM_WIND */ |
272 |
C-- end if useAtmWind |
273 |
ENDIF |
274 |
#endif /* ndef ALLOW_BULKFORMULAE or ndef ALLOW_ATM_TEMP */ |
275 |
|
276 |
C-- end bi,bj loops |
277 |
ENDDO |
278 |
ENDDO |
279 |
|
280 |
RETURN |
281 |
END |