/[MITgcm]/MITgcm/pkg/diagnostics/diagnostics_interp_p2p.F
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Contents of /MITgcm/pkg/diagnostics/diagnostics_interp_p2p.F

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Revision 1.1 - (show annotations) (download)
Sun Dec 24 20:15:42 2006 UTC (17 years, 4 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, checkpoint58u_post, checkpoint58w_post, checkpoint63p, checkpoint63q, checkpoint63r, checkpoint63s, checkpoint63l, checkpoint63m, checkpoint63n, checkpoint63o, checkpoint63h, checkpoint63i, checkpoint63j, checkpoint63k, checkpoint63d, checkpoint63e, checkpoint63f, checkpoint63g, checkpoint63a, checkpoint63b, checkpoint63c, checkpoint64, checkpoint65, checkpoint60, checkpoint61, checkpoint62, checkpoint63, checkpoint66g, checkpoint66f, checkpoint66e, checkpoint66d, checkpoint66c, checkpoint66b, checkpoint66a, checkpoint66o, checkpoint66n, checkpoint66m, checkpoint66l, checkpoint66k, checkpoint66j, checkpoint66i, checkpoint66h, checkpoint58x_post, checkpoint58t_post, 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, checkpoint59q, checkpoint59p, checkpoint59r, checkpoint59e, checkpoint59d, checkpoint59g, checkpoint59f, checkpoint59a, checkpoint59c, checkpoint59b, checkpoint59m, checkpoint59l, checkpoint59o, checkpoint59n, checkpoint59i, checkpoint59h, checkpoint59k, checkpoint59j, checkpoint59, checkpoint62c, checkpoint62b, checkpoint62a, checkpoint62g, checkpoint62f, checkpoint62e, checkpoint62d, checkpoint62k, checkpoint62j, checkpoint62i, checkpoint62h, checkpoint62o, checkpoint62n, checkpoint62m, checkpoint62l, checkpoint62s, checkpoint62r, checkpoint62q, checkpoint62p, checkpoint62w, checkpoint62v, checkpoint62u, checkpoint62t, checkpoint62z, checkpoint62y, checkpoint62x, checkpoint58y_post, checkpoint58v_post, checkpoint61f, checkpoint61g, checkpoint61d, checkpoint61e, checkpoint61b, checkpoint61c, checkpoint61a, checkpoint61n, checkpoint61o, checkpoint61l, checkpoint61m, checkpoint61j, checkpoint61k, checkpoint61h, checkpoint61i, checkpoint61v, checkpoint61w, checkpoint61t, checkpoint61u, checkpoint61r, checkpoint61s, checkpoint61p, checkpoint61q, checkpoint61z, checkpoint61x, checkpoint61y, HEAD 
vertical interpolation:
- prestopres.F moved to diagnostics_interp_p2p.F
- more flexible: p-levels are set in data.diagnostics (no longer limited
  to 3 hard coded scales)
- safer (few diagnostics options were not giving the right output).
1 C $Header: /u/gcmpack/MITgcm/pkg/diagnostics/prestopres.F,v 1.3 2005/10/25 16:27:30 molod Exp $
2 C $Name: $
3 #include "DIAG_OPTIONS.h"
4
5 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
6 CBOP 0
7 C !ROUTINE: DIAGNOSTICS_INTERP_P2P
8
9 C !INTERFACE:
10 SUBROUTINE DIAGNOSTICS_INTERP_P2P(
11 O qprs,
12 I qinp,pkz,pksrf,pktop,pk,
13 I undef, pInc,ijm,lm, myThid )
14
15 C !DESCRIPTION:
16 C***********************************************************************
17 C
18 C PURPOSE
19 C To interpolate an arbitrary quantity to Specified Pressure Levels
20 C
21 C INPUT
22 C QINP .. QINP (ijm,lm) Arbitrary Input Quantity
23 C PKZ ... PKZ (ijm,lm) Pressure to the Kappa at Input Levels
24 C PKSRF . PKSRF(ijm) Surface Pressure to the Kappa
25 C PKTOP . Pressure to the Kappa at Input-Level-Edge (1) (top of model)
26 C PK .... Output Pressure to the Kappa Level (mb)
27 C pInc .. if True, assume pressure increases with level index
28 C IJM ... Horizontal Dimension of Input
29 C LM .... Vertical Dimension of Input
30 C
31 C OUTPUT
32 C QPRS .. QPRS (ijm) Arbitrary Quantity at Pressure p
33 C
34 C NOTE
35 C Quantity is interpolated Linear in P**Kappa.
36 C Between PTOP**Kappa and PKZ(1), quantity is extrapolated.
37 C Between PKSRF**Kappa and PKZ(LM), quantity is extrapolated.
38 C Undefined Input quantities are not used.
39 C Finally: This routine assumes that pressure levels are counted
40 C top down -- ie, level 1 is the top, level lm is the bottom
41 C
42 C***********************************************************************
43 C !USES:
44 IMPLICIT NONE
45
46 C !INPUT PARAMETERS:
47 INTEGER ijm,lm,myThid
48 _RL qinp (ijm,lm)
49 _RL pkz (ijm,lm)
50 _RL pksrf(ijm)
51 _RL pktop,pk
52 _RL undef
53 LOGICAL pInc
54
55 C !OUTPUT PARAMETERS:
56 _RL qprs (ijm)
57 CEOP
58
59 C !LOCAL VARIABLES:
60 INTEGER i,l
61 _RL pkmin,pkmax,temp
62
63 C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
64
65 c Initialize to UNDEFINED
66 c -----------------------
67 DO i=1,ijm
68 qprs(i) = undef
69 ENDDO
70
71 IF ( pInc ) THEN
72 C--- Case where Levels are orderd by increasing pressure
73
74 c Interpolate to Pressure Between Input Levels
75 c --------------------------------------------
76 DO L=1,lm-1
77 pkmin = pkz(1,L)
78 pkmax = pkz(1,L+1)
79
80 DO i=2,ijm
81 IF ( pkz(i,L) .LT.pkmin ) pkmin = pkz(i,L)
82 IF ( pkz(i,L+1).GT.pkmax ) pkmax = pkz(i,L+1)
83 ENDDO
84
85 IF ( pk.LE.pkmax .AND. pk.GE.pkmin ) THEN
86 DO i=1,ijm
87 IF ( pk.GE.pkz(i,L) .AND. pk.LE.pkz(i,L+1) ) THEN
88 temp = ( pk-pkz(i,L) ) / ( pkz(i,L+1)-pkz(i,L) )
89
90 IF ( qinp(i,L) .NE.undef .AND.
91 & qinp(i,L+1).NE.undef ) THEN
92 qprs(i) = qinp(i,L+1)*temp + qinp(i,L)*(1.-temp)
93 ELSEIF ( qinp(i,L+1).NE.undef .AND. temp.GE.0.5 ) THEN
94 qprs(i) = qinp(i,L+1)
95 ELSEIF ( qinp(i,L) .NE.undef .AND. temp.LE.0.5 ) THEN
96 qprs(i) = qinp(i,L)
97 ENDIF
98 ENDIF
99 ENDDO
100 ENDIF
101
102 ENDDO
103
104 DO i=1,ijm
105 c Extrapolate to Pressure between Ptop and Highest Input Level
106 c ----------------------------------------------------------
107 IF ( pk.LE.pkz(i,1) .AND. pk.GE.pktop ) THEN
108 temp = ( pk-pkz(i,1) ) / ( pkz(i,2)-pkz(i,1) )
109
110 IF ( qinp(i,1).NE.undef .AND.
111 & qinp(i,2).NE.undef ) THEN
112 qprs(i) = qinp(i,2)*temp + qinp(i,1)*(1.-temp)
113 ELSEIF ( qinp(i,1).NE.undef ) THEN
114 qprs(i) = qinp(i,1)
115 ENDIF
116
117 ENDIF
118
119 c Extrapolate to Pressure between Psurf and Lowest Input Level
120 c ------------------------------------------------------------
121 IF ( pk.GE.pkz(i,lm) .AND. pk.LE.pksrf(i) ) THEN
122 temp = ( pk-pkz(i,lm) ) / ( pkz(i,lm-1)-pkz(i,lm) )
123
124 IF ( qinp(i,lm) .NE.undef .AND.
125 & qinp(i,lm-1).NE.undef ) THEN
126 qprs(i) = qinp(i,lm-1)*temp + qinp(i,lm)*(1.-temp)
127 ELSEIF ( qinp(i,lm) .NE.undef ) THEN
128 qprs(i) = qinp(i,lm)
129 ENDIF
130
131 ENDIF
132 ENDDO
133
134 ELSE
135 C--- Case where Levels are orderd by decreasing pressure
136
137 c Interpolate to Pressure Between Input Levels
138 c --------------------------------------------
139 DO L=1,lm-1
140 pkmin = pkz(1,L+1)
141 pkmax = pkz(1,L)
142
143 DO i=2,ijm
144 IF ( pkz(i,L+1).LT.pkmin ) pkmin = pkz(i,L+1)
145 IF ( pkz(i,L) .GT.pkmax ) pkmax = pkz(i,L)
146 ENDDO
147
148 IF ( pk.LE.pkmax .AND. pk.GE.pkmin ) THEN
149 DO i=1,ijm
150 IF ( pk.LE.pkz(i,L) .AND. pk.GE.pkz(i,L+1) ) THEN
151 temp = ( pk-pkz(i,L) ) / ( pkz(i,L+1)-pkz(i,L) )
152
153 IF ( qinp(i,L) .NE.undef .AND.
154 & qinp(i,L+1).NE.undef ) THEN
155 qprs(i) = qinp(i,L+1)*temp + qinp(i,L)*(1.-temp)
156 ELSEIF ( qinp(i,L+1).NE.undef .AND. temp.GE.0.5 ) THEN
157 qprs(i) = qinp(i,L+1)
158 ELSEIF ( qinp(i,L) .NE.undef .AND. temp.LE.0.5 ) THEN
159 qprs(i) = qinp(i,L)
160 ENDIF
161 ENDIF
162 ENDDO
163 ENDIF
164
165 ENDDO
166
167 DO i=1,ijm
168 c Extrapolate to Pressure between Ptop and Highest Input Level
169 c ----------------------------------------------------------
170 IF ( pk.LE.pkz(i,lm) .AND. pk.GE.pktop ) THEN
171 temp = ( pk-pkz(i,lm) ) / ( pkz(i,lm-1)-pkz(i,lm) )
172
173 IF ( qinp(i,lm) .NE.undef .AND.
174 & qinp(i,lm-1).NE.undef ) THEN
175 qprs(i) = qinp(i,lm-1)*temp + qinp(i,lm)*(1.-temp)
176 ELSEIF ( qinp(i,lm) .NE.undef ) THEN
177 qprs(i) = qinp(i,lm)
178 ENDIF
179
180 ENDIF
181
182 c Extrapolate to Pressure between Psurf and Lowest Input Level
183 c ------------------------------------------------------------
184 IF ( pk.GE.pkz(i,1) .AND. pk.LE.pksrf(i) ) THEN
185 temp = ( pk-pkz(i,1) ) / ( pkz(i,2)-pkz(i,1) )
186
187 IF ( qinp(i,1).NE.undef .AND.
188 & qinp(i,2).NE.undef ) THEN
189 qprs(i) = qinp(i,2)*temp + qinp(i,1)*(1.-temp)
190 ELSEIF ( qinp(i,1).NE.undef ) THEN
191 qprs(i) = qinp(i,1)
192 ENDIF
193
194 ENDIF
195 ENDDO
196
197 C--- End case increasing/decreasing pressure
198 ENDIF
199
200 RETURN
201 END
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