/[MITgcm]/MITgcm/pkg/diagnostics/diagnostics_interp_p2p.F
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Revision 1.1 - (hide annotations) (download)
Sun Dec 24 20:15:42 2006 UTC (17 years, 5 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 jmc 1.1 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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