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C Copyright 1981-2007 ECMWF
C
C Licensed under the GNU Lesser General Public License which
C incorporates the terms and conditions of version 3 of the GNU
C General Public License.
C See LICENSE and gpl-3.0.txt for details.
C
INTEGER FUNCTION INTUVS( KVGRIB, KDGRIB, INLEN,
X KUGRIBO, KVGRIBO, OUTLEN)
C
C---->
C**** INTUVS
C
C Purpose
C -------
C
C Convert GRIB format input vorticity and divergence field to
C GRIB format U and V fields.
C
C
C Interface
C ---------
C
C IRET = INTUVS( KVGRIB, KDGRIB, INLEN, KUGRIBO,KVGRIBO,OUTLEN)
C
C Input
C -----
C
C KVGRIB - Input vorticity field (spectral, GRIB format).
C KDGRIB - Input divergence field (spectral, GRIB format).
C INLEN - Input field length (words).
C
C
C Output
C ------
C
C KUGRIBO - Output U field (GRIB format).
C KVGRIBO - Output V field (GRIB format).
C OUTLEN - Output field length (words).
C
C
C Method
C ------
C
C Convert spectral vorticity/divergence to spectral U/V without
C subsequent interpolation.
C
C Note that a common block is used in intf.h to hold the U/V
C fields before interpolation.
C
C Externals
C ---------
C
C INTUVP - Now does all the work!
C INTLOG - Log error message.
C
C
C Author
C ------
C
C J.D.Chambers ECMWF Feb 1995
C
C J.D.Chambers ECMWF Feb 1997
C Allow for 64-bit pointers
C
C J.D.Chambers ECMWF February 2001
C Replace code by a call to intuvp.
C
C----<
C -----------------------------------------------------------------|
C
IMPLICIT NONE
C
C Function arguments
C
INTEGER KVGRIB(*), KDGRIB(*), INLEN
INTEGER KUGRIBO(*), KVGRIBO(*), OUTLEN
C
#include "parim.h"
#include "nifld.common"
#include "nofld.common"
#include "grfixed.h"
#include "intf.h"
C
C Parameters
C
INTEGER JPROUTINE
PARAMETER (JPROUTINE = 26900 )
C
C Local variables
C
INTEGER IHOLD1, IHOLD2, IHOLD3
LOGICAL LHOLD4
C
C Externals
C
INTEGER INTUVP
C
C -----------------------------------------------------------------|
C* Section 1. Initialise
C -----------------------------------------------------------------|
C
100 CONTINUE
C
C -----------------------------------------------------------------|
C* Section 2. Unpack the vorticity/divergence fields.
C -----------------------------------------------------------------|
C
200 CONTINUE
C
C Ensure output representation says 'spectral, no rotation'
C
IHOLD1 = NOREPR
NOREPR = JPSPHERE
IHOLD2 = NOROTA(1)
IHOLD3 = NOROTA(2)
NOROTA(1) = -9000000
NOROTA(2) = 0.0
LHOLD4 = LNOROTA
LNOROTA = .FALSE.
C
INTUVS =
X INTUVP(KVGRIB,KDGRIB,INLEN,KUGRIBO,KVGRIBO,OUTLEN)
C
C Restore output representation
C
NOREPR = IHOLD1
NOROTA(1) = IHOLD2
NOROTA(2) = IHOLD3
LNOROTA = LHOLD4
C
C -----------------------------------------------------------------|
C* Section 9. Closedown.
C -----------------------------------------------------------------|
C
900 CONTINUE
C
RETURN
END
|
