/[MITgcm]/MITgcm/model/src/calc_grad_phi_hyd.F
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Contents of /MITgcm/model/src/calc_grad_phi_hyd.F

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Revision 1.8 - (show annotations) (download)
Thu Dec 8 15:44:33 2005 UTC (18 years, 5 months ago) by heimbach
Branch: MAIN
CVS Tags: checkpoint58b_post, checkpoint57y_post, checkpoint58, checkpoint58f_post, checkpoint58d_post, checkpoint58a_post, checkpoint57z_post, checkpoint58m_post, checkpoint58o_post, checkpoint58p_post, checkpoint58q_post, checkpoint58e_post, checkpoint58r_post, checkpoint58n_post, checkpoint58k_post, checkpoint58l_post, checkpoint58g_post, checkpoint58h_post, checkpoint58j_post, checkpoint58i_post, checkpoint58c_post
Changes since 1.7: +3 -1 lines 
First step for a NLFS adjoint
o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
o new init. routines for calc_r_star, calc_surf_dr
o still need to deal with ini_masks_etc
o testreport seemed happy
1 C $Header: /u/gcmpack/MITgcm/model/src/calc_grad_phi_hyd.F,v 1.7 2005/11/05 01:00:57 jmc Exp $
2 C $Name: $
3
4 #include "CPP_OPTIONS.h"
5
6 CBOP
7 C !ROUTINE: CALC_GRAD_PHI_HYD
8 C !INTERFACE:
9 SUBROUTINE CALC_GRAD_PHI_HYD(
10 I k, bi, bj, iMin,iMax, jMin,jMax,
11 I phiHydC, alphRho, tFld, sFld,
12 O dPhiHydX, dPhiHydY,
13 I myTime, myIter, myThid)
14 C !DESCRIPTION: \bv
15 C *==========================================================*
16 C | S/R CALC_GRAD_PHI_HYD
17 C | o Calculate the gradient of Hydrostatic potential anomaly
18 C *==========================================================*
19 C \ev
20
21 C !USES:
22 IMPLICIT NONE
23 C == Global variables ==
24 #include "SIZE.h"
25 #include "EEPARAMS.h"
26 #include "PARAMS.h"
27 #include "GRID.h"
28 #include "SURFACE.h"
29 #include "DYNVARS.h"
30
31 C !INPUT/OUTPUT PARAMETERS:
32 C == Routine Arguments ==
33 C bi,bj :: tile index
34 C iMin,iMax,jMin,jMax :: Loop counters
35 C phiHydC :: Hydrostatic Potential anomaly
36 C (atmos: =Geopotential ; ocean-z: =Pressure/rho)
37 C alphRho :: Density (z-coord) or specific volume (p-coord)
38 C tFld :: Potential temp.
39 C sFld :: Salinity
40 C dPhiHydX,Y :: Gradient (X & Y directions) of Hyd. Potential
41 C myTime :: Current time
42 C myIter :: Current iteration number
43 C myThid :: Instance number for this call of the routine.
44 INTEGER k, bi,bj, iMin,iMax, jMin,jMax
45 c _RL phiHyd(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr)
46 _RL phiHydC(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
47 _RL alphRho(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
48 _RL tFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
49 _RL sFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
50 _RL dPhiHydX(1-Olx:sNx+Olx,1-Oly:sNy+Oly)
51 _RL dPhiHydY(1-Olx:sNx+Olx,1-Oly:sNy+Oly)
52 _RL myTime
53 INTEGER myIter, myThid
54
55 #ifdef INCLUDE_PHIHYD_CALCULATION_CODE
56
57 C !LOCAL VARIABLES:
58 C == Local variables ==
59 C i,j :: Loop counters
60 INTEGER i,j
61 _RL varLoc(1-Olx:sNx+Olx,1-Oly:sNy+Oly)
62 #ifdef NONLIN_FRSURF
63 _RL factorZ, factorP, conv_theta2T
64 _RL factPI
65 CHARACTER*(MAX_LEN_MBUF) msgBuf
66 #endif
67 CEOP
68
69 #ifdef NONLIN_FRSURF
70 IF (select_rStar.GE.2 .AND. nonlinFreeSurf.GE.4 ) THEN
71 # ifndef DISABLE_RSTAR_CODE
72 C- Integral of b.dr = rStarFac * Integral of b.dr* :
73 C and will add later (select_rStar=2) the contribution of
74 C the slope of the r* coordinate.
75 IF ( buoyancyRelation .EQ. 'ATMOSPHERIC' ) THEN
76 C- Consistent with Phi'= Integr[ theta'.dPi ] :
77 DO j=jMin-1,jMax
78 DO i=iMin-1,iMax
79 varLoc(i,j) = phiHydC(i,j)*rStarFacC(i,j,bi,bj)**atm_kappa
80 & + phi0surf(i,j,bi,bj)
81 ENDDO
82 ENDDO
83 ELSE
84 DO j=jMin-1,jMax
85 DO i=iMin-1,iMax
86 varLoc(i,j) = phiHydC(i,j)*rStarFacC(i,j,bi,bj)
87 & + phi0surf(i,j,bi,bj)
88 ENDDO
89 ENDDO
90 ENDIF
91 ELSEIF (select_rStar.GE.1 .AND. nonlinFreeSurf.GE.4 ) THEN
92 C- Integral of b.dr but scaled to correspond to a fixed r-level (=r*)
93 C no contribution of the slope of the r* coordinate (select_rStar=1)
94 IF ( buoyancyRelation .EQ. 'ATMOSPHERIC' ) THEN
95 C- Consistent with Phi'= Integr[ theta'.dPi ] :
96 DO j=jMin-1,jMax
97 DO i=iMin-1,iMax
98 IF (Ro_surf(i,j,bi,bj).EQ.rC(k)) THEN
99 factPI=atm_Cp*( ((etaH(i,j,bi,bj)+rC(k))/atm_Po)**atm_kappa
100 & -( rC(k) /atm_Po)**atm_kappa
101 & )
102 varLoc(i,j) = factPI*alphRho(i,j)
103 ELSEIF (Ro_surf(i,j,bi,bj).NE.0. _d 0) THEN
104 factPI = (rC(k)/Ro_surf(i,j,bi,bj))**atm_kappa
105 varLoc(i,j) = phiHydC(i,j)
106 & *(rStarFacC(i,j,bi,bj)**atm_kappa - factPI)
107 & /(1. _d 0 -factPI)
108 & + phi0surf(i,j,bi,bj)
109 ENDIF
110 ENDDO
111 ENDDO
112 ELSE
113 DO j=jMin-1,jMax
114 DO i=iMin-1,iMax
115 IF (Ro_surf(i,j,bi,bj).EQ.rC(k)) THEN
116 WRITE(msgBuf,'(3A)') 'CALC_GRAD_PHI_HYD: ',
117 & 'Problem when Ro_surf=rC',
118 & ' with select_rStar,integr_GeoPot=1,4'
119 CALL PRINT_ERROR( msgBuf , myThid)
120 STOP 'CALC_GRAD_PHI_HYD: Pb in r* options implementation'
121 ELSE
122 varLoc(i,j) = phiHydC(i,j)
123 & *(etaH(i,j,bi,bj)+Ro_surf(i,j,bi,bj)-rC(k))
124 & / (Ro_surf(i,j,bi,bj)-rC(k))
125 & + phi0surf(i,j,bi,bj)
126 ENDIF
127 ENDDO
128 ENDDO
129 ENDIF
130 # endif /* DISABLE_RSTAR_CODE */
131 ELSE
132 #else /* NONLIN_FRSURF */
133 IF (.TRUE.) THEN
134 #endif /* NONLIN_FRSURF */
135 DO j=jMin-1,jMax
136 DO i=iMin-1,iMax
137 varLoc(i,j) = phiHydC(i,j)+phi0surf(i,j,bi,bj)
138 ENDDO
139 ENDDO
140 ENDIF
141
142 C-- Zonal & Meridional gradient of potential anomaly
143 DO j=jMin,jMax
144 DO i=iMin,iMax
145 dPhiHydX(i,j) = _recip_dxC(i,j,bi,bj)
146 & *( varLoc(i,j)-varLoc(i-1,j) )
147 dPhiHydY(i,j) = _recip_dyC(i,j,bi,bj)
148 & *( varLoc(i,j)-varLoc(i,j-1) )
149 ENDDO
150 ENDDO
151
152 #ifdef NONLIN_FRSURF
153 IF (select_rStar.GE.2 .AND. nonlinFreeSurf.GE.1 ) THEN
154 IF ( buoyancyRelation .EQ. 'OCEANIC' ) THEN
155 C-- z* coordinate slope term: rho'/rho0 * Grad_r(g.z)
156 factorZ = gravity*recip_rhoConst*0.5 _d 0
157 DO j=jMin-1,jMax
158 DO i=iMin-1,iMax
159 varLoc(i,j) = etaH(i,j,bi,bj)
160 & *(1. _d 0 + rC(k)*recip_Rcol(i,j,bi,bj))
161 ENDDO
162 ENDDO
163 DO j=jMin,jMax
164 DO i=iMin,iMax
165 dPhiHydX(i,j) = dPhiHydX(i,j)
166 & +factorZ*(alphRho(i-1,j)+alphRho(i,j))
167 & *(varLoc(i,j)-varLoc(i-1,j))
168 & *recip_dxC(i,j,bi,bj)
169 dPhiHydY(i,j) = dPhiHydY(i,j)
170 & +factorZ*(alphRho(i,j-1)+alphRho(i,j))
171 & *(varLoc(i,j)-varLoc(i,j-1))
172 & *recip_dyC(i,j,bi,bj)
173 ENDDO
174 ENDDO
175 ELSEIF (buoyancyRelation .EQ. 'OCEANICP' ) THEN
176 C-- p* coordinate slope term: alpha' * Grad_r( p )
177 factorP = 0.5 _d 0
178 DO j=jMin,jMax
179 DO i=iMin,iMax
180 dPhiHydX(i,j) = dPhiHydX(i,j)
181 & +factorP*(alphRho(i-1,j)+alphRho(i,j))
182 & *(rStarFacC(i,j,bi,bj)-rStarFacC(i-1,j,bi,bj))
183 & *rC(k)*recip_dxC(i,j,bi,bj)
184 dPhiHydY(i,j) = dPhiHydY(i,j)
185 & +factorP*(alphRho(i,j-1)+alphRho(i,j))
186 & *(rStarFacC(i,j,bi,bj)-rStarFacC(i,j-1,bi,bj))
187 & *rC(k)*recip_dyC(i,j,bi,bj)
188 ENDDO
189 ENDDO
190 ELSEIF ( buoyancyRelation .EQ. 'ATMOSPHERIC' ) THEN
191 C-- p* coordinate slope term: alpha' * Grad_r( p )
192 conv_theta2T = (rC(k)/atm_Po)**atm_kappa
193 factorP = (atm_Rd/rC(k))*conv_theta2T*0.5 _d 0
194 DO j=jMin,jMax
195 DO i=iMin,iMax
196 dPhiHydX(i,j) = dPhiHydX(i,j)
197 & +factorP*(alphRho(i-1,j)+alphRho(i,j))
198 & *(rStarFacC(i,j,bi,bj)-rStarFacC(i-1,j,bi,bj))
199 & *rC(k)*recip_dxC(i,j,bi,bj)
200 dPhiHydY(i,j) = dPhiHydY(i,j)
201 & +factorP*(alphRho(i,j-1)+alphRho(i,j))
202 & *(rStarFacC(i,j,bi,bj)-rStarFacC(i,j-1,bi,bj))
203 & *rC(k)*recip_dyC(i,j,bi,bj)
204 ENDDO
205 ENDDO
206 ENDIF
207 ENDIF
208 #endif /* NONLIN_FRSURF */
209
210 #endif /* INCLUDE_PHIHYD_CALCULATION_CODE */
211
212 RETURN
213 END
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