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C Copyright 1981-2016 ECMWF.
C
C This software is licensed under the terms of the Apache Licence
C Version 2.0 which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
C
C In applying this licence, ECMWF does not waive the privileges and immunities
C granted to it by virtue of its status as an intergovernmental organisation
C nor does it submit to any jurisdiction.
C
INTEGER FUNCTION INTUVY( PVIN, PDIN, INLEN,
X PUOUT, PVOUT, OUTLEN)
C
C---->
C**** INTUVY
C
C Purpose
C -------
C
C Convert GRIB format input vorticity and divergence field to
C unpacked U and V fields.
C
C
C Interface
C ---------
C
C IRET = INTUVY( PVIN, PDIN, INLEN, PUOUT,PVOUT,OUTLEN)
C
C Input
C -----
C
C KVIN - Input vorticity field (spectral).
C KDIN - Input divergence field (spectral).
C INLEN - Input field length (words).
C
C
C Output
C ------
C
C KUOUT - Output U field
C KVOUT - Output V field
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 INTUVU - Now does all the work!
C INTLOG - Log error message.
C
C
C Author
C ------
C
C S.Curic ECMWF Dec 2006
C
C
C----<
C -----------------------------------------------------------------|
C
IMPLICIT NONE
C
C Function arguments
C
INTEGER INLEN, OUTLEN
REAL PVIN(INLEN), PDIN(INLEN), PUOUT(*), PVOUT(*)
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 INTUVU
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
INTUVY =
X INTUVU(PVIN,PDIN,INLEN,PUOUT,PVOUT,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
|
