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C $Header$ |
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C $Name$ |
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1 |
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2 |
#include "GMREDI_OPTIONS.h" |
#include "GMREDI_OPTIONS.h" |
3 |
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4 |
CStartOfInterface |
CStartOfInterface |
5 |
SUBROUTINE GMREDI_SLOPE_LIMIT( |
SUBROUTINE GMREDI_SLOPE_LIMIT( |
6 |
I dSigmadRReal, |
I dSigmaDrReal, |
7 |
I depthZ, |
I depthZ, |
8 |
U SlopeX, SlopeY, |
U SlopeX, SlopeY, |
9 |
O dRdSigmaLtd, |
O SlopeSqr, taperFct, |
10 |
I bi,bj, myThid ) |
I bi,bj, myThid ) |
11 |
C /==========================================================\ |
C /==========================================================\ |
12 |
C | SUBROUTINE GMREDI_SLOPE_LIMIT | |
C | SUBROUTINE GMREDI_SLOPE_LIMIT | |
13 |
C | o Calculate slopes for use in GM/Redi tensor | |
C | o Calculate slopes for use in GM/Redi tensor | |
14 |
C |==========================================================| |
C |==========================================================| |
15 |
C | On entry: | |
C | On entry: | |
16 |
C | dSigmadRReal conatins the d/dz Sigma | |
C | dSigmaDrReal conatins the d/dz Sigma | |
17 |
C | SlopeX/Y contains X/Y gradients of sigma | |
C | SlopeX/Y contains X/Y gradients of sigma | |
18 |
C | depthZ conatins the height (m) of level | |
C | depthZ conatins the height (m) of level | |
19 |
C | On exit: | |
C | On exit: | |
20 |
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C | dSigmaDrReal conatins the effective dSig/dz | |
21 |
C | SlopeX/Y contains X/Y slopes | |
C | SlopeX/Y contains X/Y slopes | |
22 |
C | dRdSigmaLtd conatins the effective dSig/dz | |
C | SlopeSqr contains Sx^2+Sy^2 | |
23 |
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C | taperFct contains tapering funct. value ; | |
24 |
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C | = 1 when using no tapering | |
25 |
C \==========================================================/ |
C \==========================================================/ |
26 |
IMPLICIT NONE |
IMPLICIT NONE |
27 |
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28 |
C == Global variables == |
C == Global variables == |
29 |
#include "SIZE.h" |
#include "SIZE.h" |
30 |
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#include "GRID.h" |
31 |
#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
32 |
#include "GMREDI.h" |
#include "GMREDI.h" |
33 |
#include "PARAMS.h" |
#include "PARAMS.h" |
34 |
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#ifdef ALLOW_AUTODIFF_TAMC |
35 |
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#include "tamc.h" |
36 |
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#include "tamc_keys.h" |
37 |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
38 |
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39 |
C == Routine arguments == |
C == Routine arguments == |
40 |
C |
C |
41 |
_RL SlopeX(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
_RL SlopeX(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
42 |
_RL SlopeY(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
_RL SlopeY(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
43 |
_RL dSigmaDrReal(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
_RL dSigmaDrReal(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
44 |
_RL dRdSigmaLtd(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
_RL SlopeSqr(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
45 |
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_RL taperFct(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
46 |
_RL depthZ |
_RL depthZ |
47 |
INTEGER bi,bj,myThid |
INTEGER bi,bj,myThid |
48 |
CEndOfInterface |
CEndOfInterface |
51 |
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52 |
C == Local variables == |
C == Local variables == |
53 |
_RL Small_Number |
_RL Small_Number |
54 |
PARAMETER(Small_Number=1.E-12) |
_RL Small_Taper |
55 |
_RL gradSmod,stratLimit,f1,Smod,f2,Rnondim,Cspd,Lrho |
PARAMETER(Small_Number=1.D-12) |
56 |
_RL dSigmaDrLtd |
PARAMETER(Small_Taper=1.D+03) |
57 |
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_RL gradSmod(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
58 |
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_RL dSigmaDrLtd(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
59 |
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_RL dRdSigmaLtd(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
60 |
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_RL f1,Smod,f2,Rnondim,Cspd,Lrho |
61 |
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_RL maxSlopeSqr |
62 |
_RL fpi |
_RL fpi |
63 |
PARAMETER(fpi=3.141592653589793047592) |
PARAMETER(fpi=3.141592653589793047592d0) |
64 |
INTEGER i,j |
INTEGER i,j |
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_RL sx, sy |
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65 |
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66 |
if (GM_taper_scheme.EQ.'orig') then |
#ifdef ALLOW_AUTODIFF_TAMC |
67 |
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act1 = bi - myBxLo(myThid) |
68 |
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max1 = myBxHi(myThid) - myBxLo(myThid) + 1 |
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act2 = bj - myByLo(myThid) |
70 |
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max2 = myByHi(myThid) - myByLo(myThid) + 1 |
71 |
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act3 = myThid - 1 |
72 |
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max3 = nTx*nTy |
73 |
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act4 = ikey_dynamics - 1 |
74 |
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ikey = (act1 + 1) + act2*max1 |
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& + act3*max1*max2 |
76 |
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& + act4*max1*max2*max3 |
77 |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
78 |
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79 |
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DO j=1-Oly+1,sNy+Oly-1 |
80 |
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DO i=1-Olx+1,sNx+Olx-1 |
81 |
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gradSmod(i,j) = 0. _d 0 |
82 |
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dSigmaDrLtd(i,j) = 0. _d 0 |
83 |
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ENDDO |
84 |
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ENDDO |
85 |
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86 |
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IF (GM_taper_scheme.EQ.'orig' .OR. |
87 |
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& GM_taper_scheme.EQ.'clipping') THEN |
88 |
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89 |
C- Original implementation in mitgcmuv |
C- Original implementation in mitgcmuv |
90 |
C (this turns out to be the same as Cox slope clipping) |
C (this turns out to be the same as Cox slope clipping) |
91 |
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92 |
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C- Cox 1987 "Slope clipping" |
93 |
DO j=1-Oly+1,sNy+Oly-1 |
DO j=1-Oly+1,sNy+Oly-1 |
94 |
DO i=1-Olx+1,sNx+Olx-1 |
DO i=1-Olx+1,sNx+Olx-1 |
95 |
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IF ( SlopeX(i,j)*SlopeX(i,j) + SlopeY(i,j)*SlopeY(i,j) |
96 |
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& .EQ. 0. ) THEN |
97 |
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gradSmod(i,j) = 0. _d 0 |
98 |
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ELSE |
99 |
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gradSmod(i,j) = sqrt(SlopeX(i,j)*SlopeX(i,j) |
100 |
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& +SlopeY(i,j)*SlopeY(i,j)) |
101 |
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ENDIF |
102 |
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ENDDO |
103 |
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ENDDO |
104 |
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105 |
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#ifdef ALLOW_AUTODIFF_TAMC |
106 |
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CADJ STORE gradSmod(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
107 |
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CADJ STORE dSigmaDrReal(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
108 |
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#endif |
109 |
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110 |
gradSmod=SlopeX(i,j)*SlopeX(i,j) |
DO j=1-Oly+1,sNy+Oly-1 |
111 |
& +SlopeY(i,j)*SlopeY(i,j) |
DO i=1-Olx+1,sNx+Olx-1 |
112 |
if (gradSmod .NE. 0.) gradSmod=sqrt(gradSmod) |
IF (gradSmod(i,j) .NE. 0.) THEN |
113 |
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dSigmaDrLtd(i,j) = -gradSmod(i,j)*GM_rMaxSlope |
114 |
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IF (dSigmaDrReal(i,j) .GE. dSigmaDrLtd(i,j)) |
115 |
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& dSigmaDrReal(i,j) = dSigmaDrLtd(i,j) |
116 |
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ENDIF |
117 |
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ENDDO |
118 |
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ENDDO |
119 |
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120 |
stratLimit=-Small_Number-gradSmod*GM_rMaxSlope |
#ifdef ALLOW_AUTODIFF_TAMC |
121 |
if (dSigmaDrReal(i,j).LT.stratLimit) then |
CADJ STORE slopeX(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
122 |
dSigmaDrLtd=dSigmaDrReal(i,j) |
CADJ STORE slopeY(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
123 |
else |
CADJ STORE dSigmaDrReal(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
124 |
dSigmaDrLtd=stratLimit |
#endif |
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endif |
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dRdSigmaLtd(i,j)=1./dSigmaDrLtd |
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SlopeX(i,j)=-SlopeX(i,j)*dRdSigmaLtd(i,j) |
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SlopeY(i,j)=-SlopeY(i,j)*dRdSigmaLtd(i,j) |
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125 |
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126 |
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DO j=1-Oly+1,sNy+Oly-1 |
127 |
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DO i=1-Olx+1,sNx+Olx-1 |
128 |
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IF (gradSmod(i,j) .EQ. 0.) THEN |
129 |
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SlopeX(i,j) = 0. _d 0 |
130 |
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SlopeY(i,j) = 0. _d 0 |
131 |
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ELSE |
132 |
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dRdSigmaLtd(i,j) = 1./dSigmaDrReal(i,j) |
133 |
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SlopeX(i,j)=-SlopeX(i,j)*dRdSigmaLtd(i,j) |
134 |
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SlopeY(i,j)=-SlopeY(i,j)*dRdSigmaLtd(i,j) |
135 |
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ENDIF |
136 |
ENDDO |
ENDDO |
137 |
ENDDO |
ENDDO |
138 |
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139 |
elseif (GM_taper_scheme.EQ.'clipping') then |
#ifdef ALLOW_AUTODIFF_TAMC |
140 |
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CADJ STORE slopeX(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
141 |
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CADJ STORE slopeY(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
142 |
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#endif |
143 |
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C- Cox 1987 "Slope clipping" |
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144 |
DO j=1-Oly+1,sNy+Oly-1 |
DO j=1-Oly+1,sNy+Oly-1 |
145 |
DO i=1-Olx+1,sNx+Olx-1 |
DO i=1-Olx+1,sNx+Olx-1 |
146 |
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SlopeSqr(i,j)=SlopeX(i,j)*SlopeX(i,j) |
147 |
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& +SlopeY(i,j)*SlopeY(i,j) |
148 |
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taperFct(i,j)=1. _d 0 |
149 |
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ENDDO |
150 |
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ENDDO |
151 |
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152 |
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ELSE |
153 |
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154 |
gradSmod=SlopeX(i,j)*SlopeX(i,j) |
C---------------------------------------------------------------------- |
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& +SlopeY(i,j)*SlopeY(i,j) |
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if (gradSmod .NE. 0.) gradSmod=sqrt(gradSmod) |
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155 |
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156 |
dSigmaDrLtd=-(Small_Number+gradSmod*GM_rMaxSlope) |
C- Compute the slope, no clipping, but avoid reverse slope in negatively |
157 |
if (dSigmaDrReal(i,j).LT.dSigmaDrLtd) |
C stratified (Sigma_Z > 0) region : |
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& dSigmaDrLtd=dSigmaDrReal(i,j) |
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dRdSigmaLtd(i,j)=1./dSigmaDrLtd |
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SlopeX(i,j)=-SlopeX(i,j)*dRdSigmaLtd(i,j) |
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SlopeY(i,j)=-SlopeY(i,j)*dRdSigmaLtd(i,j) |
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158 |
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159 |
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#ifdef ALLOW_AUTODIFF_TAMC |
160 |
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CADJ STORE dSigmaDrReal(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
161 |
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#endif |
162 |
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163 |
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DO j=1-Oly+1,sNy+Oly-1 |
164 |
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DO i=1-Olx+1,sNx+Olx-1 |
165 |
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IF ( dSigmaDrReal(i,j) .NE. 0. ) THEN |
166 |
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IF (dSigmaDrReal(i,j).GE.(-Small_Number)) |
167 |
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& dSigmaDrReal(i,j) = -Small_Number |
168 |
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ENDIF |
169 |
ENDDO |
ENDDO |
170 |
ENDDO |
ENDDO |
171 |
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172 |
elseif (GM_taper_scheme.EQ.'gkw91') then |
#ifdef ALLOW_AUTODIFF_TAMC |
173 |
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CADJ STORE slopeX(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
174 |
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CADJ STORE slopeY(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
175 |
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CADJ STORE dSigmaDrReal(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
176 |
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#endif |
177 |
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C- Gerdes, Koberle and Willebrand, Clim. Dyn. 1991 |
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178 |
DO j=1-Oly+1,sNy+Oly-1 |
DO j=1-Oly+1,sNy+Oly-1 |
179 |
DO i=1-Olx+1,sNx+Olx-1 |
DO i=1-Olx+1,sNx+Olx-1 |
180 |
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IF ( dSigmaDrReal(i,j) .EQ. 0. ) THEN |
181 |
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IF ( SlopeX(i,j) .NE. 0. ) |
182 |
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& SlopeX(i,j) = SIGN(Small_taper,SlopeX(i,j)) |
183 |
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IF ( SlopeY(i,j) .NE. 0. ) |
184 |
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& SlopeY(i,j) = SIGN(Small_taper,SlopeY(i,j)) |
185 |
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ELSE |
186 |
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dRdSigmaLtd(i,j) = 1./dSigmaDrReal(i,j) |
187 |
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SlopeX(i,j) = -SlopeX(i,j)*dRdSigmaLtd(i,j) |
188 |
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SlopeY(i,j) = -SlopeY(i,j)*dRdSigmaLtd(i,j) |
189 |
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ENDIF |
190 |
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ENDDO |
191 |
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ENDDO |
192 |
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193 |
gradSmod=SlopeX(i,j)*SlopeX(i,j) |
#ifdef ALLOW_AUTODIFF_TAMC |
194 |
& +SlopeY(i,j)*SlopeY(i,j) |
CADJ STORE slopeX(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
195 |
if (gradSmod .NE. 0.) gradSmod=sqrt(gradSmod) |
CADJ STORE slopeY(:,:) = comlev1_bibj, key=ikey, byte=isbyte |
196 |
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#endif |
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dSigmaDrLtd=dSigmaDrReal(i,j) |
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if (dSigmaDrLtd.NE.0.) then |
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dRdSigmaLtd(i,j)=1./dSigmaDrLtd |
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else |
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dRdSigmaLtd(i,j)=0. |
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endif |
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if (gradSmod.LE.GM_maxSlope*abs(dSigmaDrReal(i,j))) then |
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C If the slope is < Smax then calculate slopes properly |
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SlopeX(i,j)=-SlopeX(i,j)*dRdSigmaLtd(i,j) |
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SlopeY(i,j)=-SlopeY(i,j)*dRdSigmaLtd(i,j) |
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else |
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C If the slope is > Smax then taper slopes |
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SlopeX(i,j)=-SlopeX(i,j)*dSigmaDrLtd |
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& *((GM_maxSlope/gradSmod)**2) |
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SlopeY(i,j)=-SlopeY(i,j)*dSigmaDrLtd |
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& *((GM_maxSlope/gradSmod)**2) |
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endif |
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197 |
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198 |
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DO j=1-Oly+1,sNy+Oly-1 |
199 |
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DO i=1-Olx+1,sNx+Olx-1 |
200 |
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SlopeSqr(i,j) = SlopeX(i,j)*SlopeX(i,j) |
201 |
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& +SlopeY(i,j)*SlopeY(i,j) |
202 |
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taperFct(i,j) = 1. _d 0 |
203 |
ENDDO |
ENDDO |
204 |
ENDDO |
ENDDO |
205 |
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206 |
elseif (GM_taper_scheme.EQ.'dm95') then |
C- Compute the tapering function for the GM+Redi tensor : |
207 |
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208 |
C- Danabasoglu and McWilliams, J. Clim. 1995 |
IF (GM_taper_scheme.EQ.'linear') THEN |
209 |
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210 |
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C- Simplest adiabatic tapering = Smax/Slope (linear) |
211 |
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maxSlopeSqr = GM_maxSlope*GM_maxSlope |
212 |
DO j=1-Oly+1,sNy+Oly-1 |
DO j=1-Oly+1,sNy+Oly-1 |
213 |
DO i=1-Olx+1,sNx+Olx-1 |
DO i=1-Olx+1,sNx+Olx-1 |
214 |
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215 |
dSigmaDrLtd=dSigmaDrReal(i,j) |
IF ( SlopeSqr(i,j) .EQ. 0. ) THEN |
216 |
if (dSigmaDrLtd.NE.0.) then |
taperFct(i,j) = 1. _d 0 |
217 |
dRdSigmaLtd(i,j)=1./dSigmaDrLtd |
ELSE IF ( SlopeSqr(i,j) .GT. maxSlopeSqr ) THEN |
218 |
else |
taperFct(i,j) = sqrt(maxSlopeSqr / SlopeSqr(i,j)) |
219 |
dRdSigmaLtd(i,j)=0. |
ENDIF |
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endif |
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sx = -SlopeX(i,j)*dRdSigmaLtd(i,j) |
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sy = -SlopeY(i,j)*dRdSigmaLtd(i,j) |
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Smod = sx*sx + sy*sy |
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if (Smod.NE.0.) Smod=sqrt(Smod) |
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f1=0.5*(1.+tanh( (GM_Scrit-Smod)/GM_Sd )) |
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SlopeX(i,j) = sx*f1 |
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SlopeY(i,j) = sy*f1 |
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220 |
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221 |
ENDDO |
ENDDO |
222 |
ENDDO |
ENDDO |
223 |
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224 |
elseif (GM_taper_scheme.EQ.'ldd97') then |
ELSEIF (GM_taper_scheme.EQ.'gkw91') THEN |
225 |
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226 |
C- Large, Danabasoglu and Doney, JPO 1997 |
C- Gerdes, Koberle and Willebrand, Clim. Dyn. 1991 |
227 |
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maxSlopeSqr = GM_maxSlope*GM_maxSlope |
228 |
DO j=1-Oly+1,sNy+Oly-1 |
DO j=1-Oly+1,sNy+Oly-1 |
229 |
DO i=1-Olx+1,sNx+Olx-1 |
DO i=1-Olx+1,sNx+Olx-1 |
230 |
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|
231 |
dSigmaDrLtd=dSigmaDrReal(i,j) |
IF ( SlopeSqr(i,j) .EQ. 0. ) THEN |
232 |
if (dSigmaDrLtd.NE.0.) then |
taperFct(i,j) = 1. _d 0 |
233 |
dRdSigmaLtd(i,j)=1./dSigmaDrLtd |
ELSE IF ( SlopeSqr(i,j) .GT. maxSlopeSqr ) THEN |
234 |
else |
taperFct(i,j) = maxSlopeSqr/SlopeSqr(i,j) |
235 |
dRdSigmaLtd(i,j)=0. |
ENDIF |
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endif |
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sx = -SlopeX(i,j)*dRdSigmaLtd(i,j) |
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sy = -SlopeY(i,j)*dRdSigmaLtd(i,j) |
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Smod = sx*sx + sy*sy |
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if (Smod.NE.0.) Smod=sqrt(Smod) |
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f1=0.5*(1.+tanh( (GM_Scrit-Smod)/GM_Sd )) |
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Cspd=2. |
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Lrho=100.e3 |
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if (FCori(i,j,bi,bj).NE.0.) Lrho=Cspd/abs(Fcori(i,j,bi,bj)) |
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Lrho=min(Lrho,100.e3) |
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Lrho=max(Lrho,15.e3) |
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if (Smod.NE.0.) then |
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Rnondim=depthZ/(Lrho*Smod) |
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else |
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Rnondim=0. |
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endif |
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f2=0.5*(1.+sin( fpi*(Rnondim-0.5))) |
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SlopeX(i,j) = sx*f1 |
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SlopeY(i,j) = sy*f1 |
|
236 |
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237 |
ENDDO |
ENDDO |
238 |
ENDDO |
ENDDO |
239 |
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240 |
elseif (GM_taper_scheme.EQ.' ') then |
ELSEIF (GM_taper_scheme.EQ.'dm95') THEN |
241 |
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|
242 |
C- No tapering/clipping selected so ... |
C- Danabasoglu and McWilliams, J. Clim. 1995 |
243 |
|
DO j=1-Oly+1,sNy+Oly-1 |
244 |
|
DO i=1-Olx+1,sNx+Olx-1 |
245 |
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|
246 |
|
IF ( SlopeSqr(i,j) .EQ. 0. ) THEN |
247 |
|
taperFct(i,j) = 1. _d 0 |
248 |
|
ELSE |
249 |
|
Smod=sqrt(SlopeSqr(i,j)) |
250 |
|
taperFct(i,j)=0.5*(1.+tanh( (GM_Scrit-Smod)/GM_Sd )) |
251 |
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ENDIF |
252 |
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ENDDO |
253 |
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ENDDO |
254 |
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255 |
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ELSEIF (GM_taper_scheme.EQ.'ldd97') THEN |
256 |
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257 |
|
C- Large, Danabasoglu and Doney, JPO 1997 |
258 |
DO j=1-Oly+1,sNy+Oly-1 |
DO j=1-Oly+1,sNy+Oly-1 |
259 |
DO i=1-Olx+1,sNx+Olx-1 |
DO i=1-Olx+1,sNx+Olx-1 |
260 |
|
|
261 |
dSigmaDrLtd=dSigmaDrReal(i,j) |
IF (SlopeSqr(i,j) .EQ. 0.) THEN |
262 |
if (dSigmaDrLtd.NE.0.) then |
taperFct(i,j) = 1. _d 0 |
263 |
dRdSigmaLtd(i,j)=1./dSigmaDrLtd |
ELSE |
264 |
else |
Smod=sqrt(SlopeSqr(i,j)) |
265 |
dRdSigmaLtd(i,j)=0. |
f1=0.5*(1.+tanh( (GM_Scrit-Smod)/GM_Sd )) |
266 |
endif |
Cspd=2. |
267 |
SlopeX(i,j)=-SlopeX(i,j)*dRdSigmaLtd(i,j) |
Lrho=100. _d 3 |
268 |
SlopeY(i,j)=-SlopeY(i,j)*dRdSigmaLtd(i,j) |
if (FCori(i,j,bi,bj).NE.0.) Lrho=Cspd/abs(Fcori(i,j,bi,bj)) |
269 |
|
Lrho=min(Lrho , 100. _d 3) |
270 |
|
Lrho=max(Lrho , 15. _d 3) |
271 |
|
Rnondim=depthZ/(Lrho*Smod) |
272 |
|
f2=0.5*(1.+sin( fpi*(Rnondim-0.5))) |
273 |
|
taperFct(i,j)=f1*f2 |
274 |
|
ENDIF |
275 |
|
|
276 |
ENDDO |
ENDDO |
277 |
ENDDO |
ENDDO |
278 |
|
|
279 |
endif |
ELSEIF (GM_taper_scheme.NE.' ') THEN |
280 |
|
STOP 'GMREDI_SLOPE_LIMIT: Bad GM_taper_scheme' |
281 |
|
ENDIF |
282 |
|
|
283 |
|
ENDIF |
284 |
|
|
285 |
|
|
286 |
#endif /* ALLOW_GMREDI */ |
#endif /* ALLOW_GMREDI */ |