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Revision 1.10 - (show annotations) (download)
Mon Aug 29 19:38:44 2011 UTC (12 years, 9 months ago) by jmc
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, checkpoint63p, checkpoint63q, checkpoint63r, checkpoint63s, checkpoint63l, checkpoint63m, checkpoint63n, checkpoint63o, checkpoint63h, checkpoint63i, checkpoint63j, checkpoint63k, checkpoint63d, checkpoint63e, checkpoint63f, checkpoint63g, checkpoint63c, checkpoint64, checkpoint65, checkpoint66g, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, checkpoint66n, checkpoint66m, checkpoint66l, checkpoint66k, checkpoint66j, checkpoint66i, checkpoint66h, 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, HEAD
Changes since 1.9: +35 -14 lines
- remove var "lambdaThetaZonRelax"
- move labBnd (formerly "lat") to common block, set in ebm_readparms.F
- move all local arrays from EMB.h to ebm_atmosphere.F

1 C $Header: /u/gcmpack/MITgcm/pkg/ebm/ebm_atmosphere.F,v 1.9 2011/08/28 21:54:40 jmc Exp $
2 C $Name: $
3
4 #include "EBM_OPTIONS.h"
5
6 CBOP 0
7 C !ROUTINE: EBM_ATMOSPHERE
8
9 C !INTERFACE:
10 SUBROUTINE EBM_ATMOSPHERE ( myTime, myIter, myThid )
11
12 C !DESCRIPTION:
13 C *==========================================================*
14 C | S/R CALCULATE FORCING FROM ENERGY AND MOISTURE
15 C | BALANCE ATMOSPHERE
16 C *==========================================================*
17 C References:
18 C * X. Wang, P. Stone and J. Marotzke, 1999:
19 C Global thermohaline circulation. Part I:
20 C Sensitivity to atmospheric moisture transport.
21 C J. Climate 12(1), 71-82
22 C * X. Wang, P. Stone and J. Marotzke, 1999:
23 C Global thermohaline circulation. Part II:
24 C Sensitivity with interactive transport.
25 C J. Climate 12(1), 83-91
26 C * M. Nakamura, P. Stone and J. Marotzke, 1994:
27 C Destabilization of the thermohaline circulation
28 C by atmospheric eddy transports.
29 C J. Climate 7(12), 1870-1882
30
31 C !USES:
32 IMPLICIT NONE
33 C === Global variables ===
34 #include "SIZE.h"
35 #include "EEPARAMS.h"
36 #include "PARAMS.h"
37 #include "FFIELDS.h"
38 #include "GRID.h"
39 #include "EBM.h"
40 #ifdef ALLOW_AUTODIFF_TAMC
41 # include "tamc.h"
42 # include "tamc_keys.h"
43 #endif
44
45 C !INPUT PARAMETERS:
46 C === Routine arguments ===
47 C myThid :: my Thread Id number
48 _RL myTime
49 INTEGER myIter
50 INTEGER myThid
51 CEOP
52
53 #ifdef ALLOW_EBM
54 C !LOCAL VARIABLES:
55 INTEGER i, j, bi, bj
56 INTEGER no_so
57 #ifdef ALLOW_AUTODIFF_TAMC
58 INTEGER iebmkey
59 #endif /* ALLOW_AUTODIFF_TAMC */
60 _RL ReCountX(1-OLy:sNy+OLy,nSy)
61
62 C-- Local arrays used for EBM computation (previously declared in EBM.h)
63 C- sin(lat) and Legendre polynomials
64 cph We will make these three (i,j) arrays to
65 cph avoid AD recomputations
66 _RL S(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSy)
67 _RL P2(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSy)
68 _RL P4(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSy)
69 C- Shortwave and albedo parameters
70 _RL SW(1-OLy:sNy+OLy,nSy)
71 C- Longwave parameters
72 _RL LW(1-OLy:sNy+OLy,nSy)
73 C- Heat transport parameters
74 _RL Hd(1-OLy:sNy+OLy,nSy), Hd35(2)
75 C- Freshwater flux parameters
76 _RL Fw(1-OLy:sNy+OLy,nSy), Fw35(2)
77 C- Temperature parameterization
78 _RL T(1-OLy:sNy+OLy,nSy)
79 _RL T_var(4), T0(2), T2(2), T35(2), DTDy35(2)
80 C- Parameters used to calculate the transport efficiency
81 _RL Cl, Cf, Cs, C
82 _RL gamma, kappa, De
83 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
84
85 DO bj=myByLo(myThid),myByHi(myThid)
86 DO bi=myBxLo(myThid),myBxHi(myThid)
87
88 #ifdef ALLOW_AUTODIFF_TAMC
89 act1 = bi - myBxLo(myThid)
90 max1 = myBxHi(myThid) - myBxLo(myThid) + 1
91 act2 = bj - myByLo(myThid)
92 max2 = myByHi(myThid) - myByLo(myThid) + 1
93 act3 = myThid - 1
94 max3 = nTx*nTy
95 act4 = ikey_dynamics - 1
96 iebmkey = (act1 + 1) + act2*max1
97 & + act3*max1*max2
98 & + act4*max1*max2*max3
99 #endif /* ALLOW_AUTODIFF_TAMC */
100
101 DO j=1-oLy,sNy+oLy
102 DO i=1-oLx,sNx+oLx
103 S(i,j,bj) = 0.0
104 P2(i,j,bj) = 0.0
105 P4(i,j,bj) = 0.0
106 ENDDO
107 SW(j,bj) = 0.0
108 LW(j,bj) = 0.0
109 Hd(j,bj) = 0.0
110 Fw(j,bj) = 0.0
111 T(j,bj) = 0.0
112 ReCountX(j,bj) = 0.0
113 ENDDO
114
115 print *, 'SH', TmlS-t_mlt, TtS-t_mlt
116 print *, 'NH', TmlN-t_mlt, TtN-t_mlt
117
118 C-- account for ice (can absorb heat on an annual averaged basis)
119 C-- Greenland in Northern Hemisphere, Antarctica in Southern
120 DO j = 1,sNy
121 ReCountX(j,bj) = CountX(j,bj)
122 IF (yC(1,j,bi,bj) .LE. -62.0) THEN
123 ReCountX(j,bj) = 90.
124 ELSE IF (yC(1,j,bi,bj) .EQ. 74.0) THEN
125 ReCountX(j,bj) = CountX(j,bj) + 9.0
126 ELSE IF (yC(1,j,bi,bj) .EQ. 70.0) THEN
127 ReCountX(j,bj) = CountX(j,bj) + 8.0
128 ELSE IF (yC(1,j,bi,bj) .EQ. 66.0) THEN
129 ReCountX(j,bj) = CountX(j,bj) + 5.0
130 ELSE IF (yC(1,j,bi,bj) .EQ. 62.0) THEN
131 ReCountX(j,bj) = CountX(j,bj) + 1.0
132 ENDIF
133 ENDDO
134 #ifdef ALLOW_AUTODIFF_TAMC
135 CADJ STORE ReCountX(:,bj) = comlev1_bibj, key=iebmkey, byte=isbyte
136 #endif
137
138 c=====================================================
139 c Fit area-weighed averaged SST north/south of 34
140 c degree to second Legendre polynomial:
141 c=======================================================
142 T_var(1) = SIN(latBnd(2)*deg2rad) - SIN(latBnd(1)*deg2rad)
143 T_var(2) = SIN(latBnd(3)*deg2rad) - SIN(latBnd(2)*deg2rad)
144 T_var(3) = SIN(latBnd(2)*deg2rad)**3 - SIN(latBnd(1)*deg2rad)**3
145 T_var(4) = SIN(latBnd(3)*deg2rad)**3 - SIN(latBnd(2)*deg2rad)**3
146 #ifdef ALLOW_AUTODIFF_TAMC
147 CADJ STORE T_var(:) = comlev1_bibj, key=iebmkey, byte=isbyte
148 #endif
149
150 c----------------------------------------
151 c Southern hemisphere:
152 c----------------------------------------
153 T2(1) = 2.*(TtS - TmlS)*T_var(1)*T_var(2)/
154 & (T_var(3)*T_var(2) - T_var(4)*T_var(1))
155 T0(1) = TtS - 0.5*T2(1)*((T_var(3)/T_var(1)) - 1.)
156 c----------------------------------------
157 c Northern hemisphere
158 c----------------------------------------
159 T2(2) = 2.*(TtN - TmlN)*T_var(1)*T_var(2)/
160 & (T_var(3)*T_var(2) - T_var(4)*T_var(1))
161 T0(2) = TtN - 0.5*T2(2)*((T_var(3)/T_var(1)) - 1.)
162 c-----------------------------------------
163 c Temperature at 35 N/S
164 c-----------------------------------------
165 DO no_so = 1,2
166 T35(no_so)= T0(no_so) +
167 & T2(no_so)*0.5*
168 & ( 3.*SIN(latBnd(2)*deg2rad)**2 - 1. )
169 ENDDO
170 c-----------------------------------------
171 c Temperature gradient at 35 N/S
172 c-----------------------------------------
173 DO no_so = 1, 2
174 DTDy35(no_so) = 3.*T2(no_so)*
175 & SIN(latBnd(2)*deg2rad)/rSphere
176 ENDDO
177 c-----------------------------------------------------------
178 c Magnitude of the heat and moisture transport at 35 N/S
179 c-----------------------------------------------------------
180
181 #ifdef ALLOW_AUTODIFF_TAMC
182 CADJ STORE T35(:) = comlev1_bibj, key=iebmkey, byte=isbyte
183 CADJ STORE DTDy35(:) = comlev1_bibj, key=iebmkey, byte=isbyte
184 #endif
185 DO no_so = 1, 2
186 IF ( DTDy35(no_so).NE.0. .AND. T35(no_so).NE.0. ) THEN
187 gamma = -T35(no_so)*beta*Hw*Nw*Nw/
188 & (gravity*f0*DTDy35(no_so))
189 kappa = Hw/(1. _d 0 + gamma)
190 De = Hw/(0.48 _d 0 + 1.48 _d 0 *gamma)
191 C = 0.6 _d 0 *gravity*kappa*kappa*Nw/
192 & (Tw*f0*f0)
193 Cs = rho_air*cp*C*
194 & ( 1. _d 0 /(1. _d 0 /Hw + 1. _d 0 /De)
195 & -1. _d 0 /(1. _d 0 /Hw+1. _d 0 /De+1. _d 0 /dz) )
196 Cf = htil*2.97 _d 12*C/(T35(no_so)**3)*(
197 & 1. _d 0/(1. _d 0/De + (5420. _d 0*tau /(T35(no_so)**2)))
198 & -1. _d 0/(1. _d 0/De+5420. _d 0*tau/(T35(no_so)**2)
199 & +1. _d 0/dz))
200 Cl = Cf*lv
201 Hd35(no_so) = 2.*PI*rSphere*COS(latBnd(2)*deg2rad)
202 & *(Cs + Cl*exp(-5420./T35(no_so)))
203 & *(abs(DTDy35(no_so))**trans_eff)
204 Fw35(no_so) = 2.*PI*rSphere*COS(latBnd(2)*deg2rad)
205 & *(abs(DTDy35(no_so))**trans_eff)
206 & *Cf*exp(-5420./T35(no_so))
207 ELSE
208 Hd35(no_so) = 0.
209 Fw35(no_so) = 0.
210 ENDIF
211 ENDDO
212 c
213 Fw35(1) = 929944128.
214 Fw35(2) = 678148032.
215 c
216 #ifdef EBM_VERSION_1BASIN
217 c Fw35(2) = 0.7*Fw35(2)
218 #else
219 Hd35(2) = 1.6 _d 0*Hd35(2)
220 #endif
221 c======================================================
222 c Calculation of latitudinal profiles
223 c======================================================
224 c
225 DO j=1,sNy
226 DO i=1,sNx
227 C sin(lat)
228 S(i,j,bj) = SIN(yC(i,j,bi,bj)*deg2rad)
229 C setup Legendre polynomials and derivatives
230 P2(i,j,bj) = 0.5*(3.*S(i,j,bj)**2 - 1.)
231 P4(i,j,bj) = 0.12 _d 0 *
232 & (35.*S(i,j,bj)**4 - 30.*S(i,j,bj)**2 + 3.)
233 ENDDO
234 ENDDO
235 #ifdef ALLOW_AUTODIFF_TAMC
236 CADJ STORE S(:,:,bj) = comlev1_bibj, key=iebmkey, byte=isbyte
237 CADJ STORE P2(:,:,bj) = comlev1_bibj, key=iebmkey, byte=isbyte
238 CADJ STORE P4(:,:,bj) = comlev1_bibj, key=iebmkey, byte=isbyte
239 #endif
240 c
241 DO j=1,sNy
242 DO i=1,sNx
243
244 IF (yC(i,j,bi,bj) .LT. 0.) THEN
245 no_so = 1
246 ELSE
247 no_so = 2
248 ENDIF
249 c net shortwave
250 SW(j,bj) = 0.25 _d 0 *Q0*(1. _d 0 + Q2*P2(i,j,bj))*
251 & (1. _d 0 - A0 - A2*P2(i,j,bj) - A4*P4(i,j,bj) )
252 c temperature
253 T(j,bj) = T0(no_so) + T2(no_so)*P2(i,j,bj)
254 c net longwave
255 LW(j,bj) = LW0 + LW1*(T(j,bj)-t_mlt)
256 c climate change run, the parameter to change is DLW
257 #ifdef EBM_CLIMATE_CHANGE
258 LW(j,bj) = LW(j,bj) -
259 & (myTime-startTime)*3.215 _d -8*DLW
260 c < - 6.0
261 c < *75.0*0.0474*
262 c < (-2.62*S(i,j,bj)**8 + 0.73*S(i,j,bj)**7 +
263 c < 4.82*S(i,j,bj)**6 -
264 c < 1.12*S(i,j,bj)**5 - 2.69*S(i,j,bj)**4 + 0.47*S(i,j,bj)**3 +
265 c < 0.51*S(i,j,bj)**2 - 0.05*S(i,j,bj)**1 + 0.17)
266 #endif
267 c fluxes at ocean/atmosphere interface
268 c Heat Flux = -Div(atmospheric heat transport) + SW - LW
269 #ifdef EBM_VERSION_1BASIN
270 Qnet(i,j,bi,bj) = -1.0 _d 0 *( SW(j,bj) - LW(j,bj) -
271 & Hd35(no_so)*(
272 & 0.000728 _d 4 - 0.00678 _d 4*S(i,j,bj) +
273 & 0.0955 _d 4*S(i,j,bj)**2 + 0.0769 _d 4*S(i,j,bj)**3 -
274 & 0.8508 _d 4*S(i,j,bj)**4 - 0.3581 _d 4*S(i,j,bj)**5 +
275 & 2.9240 _d 4*S(i,j,bj)**6 + 0.8311 _d 4*S(i,j,bj)**7 -
276 & 4.9548 _d 4*S(i,j,bj)**8 - 0.8808 _d 4*S(i,j,bj)**9 +
277 & 4.0644 _d 4*S(i,j,bj)**10 +0.3409 _d 4*S(i,j,bj)**11 -
278 & 1.2893 _d 4*S(i,j,bj)**12 )
279 & /(2.*PI*rSphere*rSphere*25.) )
280 c Qnet(i,j,bi,bj) = -1.0*( SW(j,bj) - LW(j,bj) -
281 c < 0.5*Hd35(no_so)*(3.054e1 - 3.763e1*S(i,j,bj) +
282 c < 1.892e2*S(i,j,bj)**2 + 3.041e2*S(i,j,bj)**3 -
283 c < 1.540e3*S(i,j,bj)**4 - 9.586e2*S(i,j,bj)**5 +
284 c < 2.939e3*S(i,j,bj)**6 + 1.219e3*S(i,j,bj)**7 -
285 c < 2.550e3*S(i,j,bj)**8 - 5.396e2*S(i,j,bj)**9 +
286 c < 8.119e2*S(i,j,bj)**10)
287 c < /(2*PI*rSphere*rSphere*22.3) )
288 #else
289 IF (ReCountX(j,bj) .GT. 0.) THEN
290 Qnet(i,j,bi,bj) = (-90. _d 0 /ReCountX(j,bj))*
291 & ( SW(j,bj) - LW(j,bj) -
292 & Hd35(no_so)*(3.054 _d 1 - 3.763 _d 1*S(i,j,bj) +
293 & 1.892 _d 2*S(i,j,bj)**2 + 3.041 _d 2*S(i,j,bj)**3 -
294 & 1.540 _d 3*S(i,j,bj)**4 - 9.586 _d 2*S(i,j,bj)**5 +
295 & 2.939 _d 3*S(i,j,bj)**6 + 1.219 _d 3*S(i,j,bj)**7 -
296 & 2.550 _d 3*S(i,j,bj)**8 - 5.396 _d 2*S(i,j,bj)**9 +
297 & 8.119 _d 2*S(i,j,bj)**10)
298 & /(2.*PI*rSphere*rSphere*22.3 _d 0) )
299 ELSE
300 Qnet(i,j,bi,bj) = 0.
301 ENDIF
302 #endif
303 c Freshwater Flux = Div(atmospheric moisture transport)
304 c--- conversion of E-P from kg/(s m^2) -> m/s -> psu/s: 1e-3*35/delZ(1)
305 #ifdef EBM_VERSION_1BASIN
306 EmPmR(i,j,bi,bj) = -1. _d -3*Fw35(no_so)
307 & *(-0.8454 _d 5*S(i,j,bj)**14 + 0.5367 _d 5*S(i,j,bj)**13
308 & +3.3173 _d 5*S(i,j,bj)**12 - 1.8965 _d 5*S(i,j,bj)**11
309 & -5.1701 _d 5*S(i,j,bj)**10
310 & +2.6240 _d 5*S(i,j,bj)**9 + 4.077 _d 5*S(i,j,bj)**8
311 & -1.791 _d 5*S(i,j,bj)**7
312 & -1.7231 _d 5*S(i,j,bj)**6 + 0.6229 _d 5*S(i,j,bj)**5
313 & +0.3824 _d 5*S(i,j,bj)**4
314 & -0.1017 _d 5*S(i,j,bj)**3 - 0.0387 _d 5*S(i,j,bj)**2
315 & +0.00562 _d 5*S(i,j,bj) + 0.0007743 _d 5)
316 & /(2.0*12.0*PI*rSphere*rSphere)
317 c EmPmR(i,j,bi,bj) = 1.e-3*Fw35(no_so)
318 c < *(50.0 + 228.0*S(i,j,bj) -1.593e3*S(i,j,bj)**2
319 c < - 2.127e3*S(i,j,bj)**3 + 7.3e3*S(i,j,bj)**4
320 c < + 5.799e3*S(i,j,bj)**5 - 1.232e4*S(i,j,bj)**6
321 c < - 6.389e3*S(i,j,bj)**7 + 9.123e3*S(i,j,bj)**8
322 c < + 2.495e3*S(i,j,bj)**9 - 2.567e3*S(i,j,bj)**10)
323 c < /(2*PI*rSphere*rSphere*15.0)
324 #else
325 IF (yC(i,j,bi,bj) .LT. -40.) THEN
326 c-- Southern Hemisphere
327 EmPmR(i,j,bi,bj) = -1. _d -3*(Fw35(no_so)*
328 & (-6.5 _d 0 + 35.3 _d 0 + 71.7 _d 0*S(i,j,bj)
329 & - 1336.3 _d 0*S(i,j,bj)**2 - 425.8 _d 0*S(i,j,bj)**3
330 & + 5434.8 _d 0*S(i,j,bj)**4 + 707.9 _d 0*S(i,j,bj)**5
331 & - 6987.7 _d 0*S(i,j,bj)**6 - 360.4 _d 0*S(i,j,bj)**7
332 & + 2855.0 _d 0*S(i,j,bj)**8)
333 & /(2.*PI*rSphere*rSphere*18.0))
334 ELSE
335 c-- Atlantic
336 IF (xC(i,j,bi,bj) .GT. 284.
337 & .OR. xC(i,j,bi,bj) .LT. 28.) THEN
338 EmPmR(i,j,bi,bj) = -1. _d -3*(Fw35(no_so)*
339 & (-6.5 _d 0 -2.878 _d 0 + 3.157 _d 2*S(i,j,bj) -
340 & 2.388 _d 3*S(i,j,bj)**2 - 4.101 _d 3*S(i,j,bj)**3 +
341 & 1.963 _d 4*S(i,j,bj)**4 + 1.534 _d 4*S(i,j,bj)**5 -
342 & 6.556 _d 4*S(i,j,bj)**6 - 2.478 _d 4*S(i,j,bj)**7 +
343 & 1.083 _d 5*S(i,j,bj)**8 + 1.85 _d 4*S(i,j,bj)**9 -
344 & 8.703 _d 4*S(i,j,bj)**10 - 5.276 _d 3*S(i,j,bj)**11 +
345 & 2.703 _d 4*S(i,j,bj)**12)
346 & /(2.*PI*rSphere*rSphere*12.0))
347 ELSE
348 c-- Pacific
349 EmPmR(i,j,bi,bj) = -1. _d -3*(Fw35(no_so)
350 & *(-6.5 _d 0 +51.89 _d 0 + 4.916 _d 2*S(i,j,bj) -
351 & 1.041 _d 3*S(i,j,bj)**2 - 7.546 _d 3*S(i,j,bj)**3 +
352 & 2.335 _d 3*S(i,j,bj)**4 + 3.449 _d 4*S(i,j,bj)**5 +
353 & 6.702 _d 3*S(i,j,bj)**6 - 6.601 _d 4*S(i,j,bj)**7 -
354 & 2.594 _d 4*S(i,j,bj)**8 + 5.652 _d 4*S(i,j,bj)**9 +
355 & 2.738 _d 4*S(i,j,bj)**10 - 1.795 _d 4*S(i,j,bj)**11 -
356 & 9.486 _d 3*S(i,j,bj)**12)
357 & /(2.*PI*rSphere*rSphere*12.0))
358 ENDIF
359 ENDIF
360 #endif
361 EmPmR(i,j,bi,bj) = EmPmR(i,j,bi,bj)
362 & - Run(i,j,bi,bj)*scale_runoff
363 EmPmR(i,j,bi,bj) = EmPmR(i,j,bi,bj)*rhoConstFresh
364 ENDDO
365 ENDDO
366 ENDDO
367 ENDDO
368
369 _EXCH_XY_RS(Qnet , myThid )
370 _EXCH_XY_RS(EmPmR , myThid )
371
372 C CALL PLOT_FIELD_XYRS( Qnet, 'Qnet' , 1, myThid )
373 C CALL PLOT_FIELD_XYRS( EmPmR, 'EmPmR' , 1, myThid )
374
375 #endif /* ALLOW_EBM */
376
377 RETURN
378 END

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