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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
SUBROUTINE JMVULL( PZFA, PNORTH, PSOUTH, PWEST, PLATINC, PLONINC,
X PSTART,PDIFF, KROWS, KCOLS, KLON, KJPWR, POUTF)
C
C---->
C**** JMVULL
C
C Purpose
C _______
C
C This routine moves grid point data from array PZFA to array POUTF.
C It handles the case when the number of latitudes is different in
C the two hemispheres.
C
C
C Interface
C _________
C
C CALL JMVULL( PZFA, PNORTH, PSOUTH, PWEST, PLATINC, PLONINC,
C X PSTART,PDIFF, KROWS, KCOLS, KLON, KJPWR, POUTF)
C
C
C Input parameters
C ________________
C
C PZFA - Input array of grid points arranged in pairs of
C north and south latitude bands
C PNORTH - Northernmost latitude for field in POUTF (degrees)
C PSOUTH - Southernmost latitude for field in POUTF (degrees)
C PWEST - Westernmost longitude for field in POUTF (degrees)
C PLATINC - Grid interval between latitudes in degrees in POUTF
C PLONINC - Grid interval between longitudes in degrees in POUTF
C PSTART - Current first latitude in PZFA (degrees)
C PDIFF - Offset to first latitude in PZFA for moving (degrees)
C KROWS - Number of latitude rows to store
C KCOLS - Number of longitude points to store from latitude
C KLON - Number of longitude points in generated latitude row
C KJPWR - Multiplication factor applied to ensure that number
C of longitude points > twice*spherical truncation
C
C
C Output parameters
C ________________
C
C POUTF - output array of grid points
C
C
C Common block usage
C __________________
C
C JDCNDBG
C
C
C Method
C ______
C
C Moves latitude rows of points from PZFA into the correct
C geographical positions in POUTF. POUTF may already be
C partially full. The distribution is not symmetrical north-south.
C
C
C Externals
C _________
C
C JMOVLL - Move points of symmetric grid to array
C INTLOG - Logs messages
C INTLOGR - Logs messages with real value.
C
C
C Reference
C _________
C
C E.C.M.W.F. Research Department technical memorandum no. 56
C "The forecast and analysis post-processing package"
C May 1982. J.Haseler.
C
C
C Comments
C ________
C
C POUTF is a 2-dimensional array, with first dimension = KCOLS.
C
C For calculation purposes, the number of longitude points
C has to be greater than 2*(output truncation) to ensure that the
C fourier transform is exact (see Reference, page 10).
C Parameter JPLONO is set to 860 to ensure that PZFA will have
C enough slots for the KLON points for all values of regular
C grid intervals from N1 to N720.
C
C When filling the output array POUTF, the longitude points have
C have to be taken selectively to avoid the intermediate generated
C points, picking up values only at the required longitudes. The
C magnification factor is KJPWR (a power of 2).
C
C PZFA has values stored:
C North lat1: x, 1, x, 2, x, 3, x, ... , KLON, ...
C South lat1: x, 1, x, 2, x, 3, x, ... , KLON, ...
C North lat2: x, 1, x, 2, x, 3, x, ... , KLON, ...
C South lat2: x, 1, x, 2, x, 3, x, ... , KLON, ...
C ... for KROWS latitudes.
C
C The 'x' represents the extra values generated because of the
C need for the number of points along a latitude line to be more
C than twice the truncation of the spherical harmonics.
C
C
C Author
C ______
C
C J.D.Chambers ECMWF Nov 1993
C
C
C Modifications
C _____________
C
C None
C
C----<
C
IMPLICIT NONE
C
C _______________________________________________________
C
#include "jparams.h"
#include "parim.h"
C
C Subroutine arguments
INTEGER KROWS, KCOLS, KLON, KJPWR
REAL PZFA, PNORTH, PWEST, PSOUTH, PLATINC, PLONINC, PSTART
REAL PDIFF, POUTF
DIMENSION PZFA( JPLONO+2, 64), POUTF( KCOLS, *)
C
C Parameters
INTEGER JPROUTINE
PARAMETER( JPROUTINE = 32100 )
C
C Local variables
INTEGER INROWS, NROWS, NFLAG
INTEGER LATEST
REAL ZTOP, ZBASE
C
C _______________________________________________________
C
C* Section 1. Initialization.
C _______________________________________________________
C
100 CONTINUE
C
IF ( NDBG .GT. 1) THEN
CALL INTLOG(JP_DEBUG,'JMVULL - Input parameters:',JPQUIET)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Northern latitude for output = ', PNORTH)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Southern latitude for output = ', PSOUTH)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Western longitude for output = ', PWEST)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Latitude grid interval (deg) = ', PLATINC)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Longitude grid interval (deg) = ', PLONINC)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - First latitude for moving = ', PSTART)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Offset to first lat. for moving = ', PDIFF)
CALL INTLOG(JP_DEBUG,
X 'JMVULL - Number of latitudes to store = ', KROWS)
CALL INTLOG(JP_DEBUG,
X 'JMVULL - Number of longitude pts per row = ', KCOLS)
CALL INTLOG(JP_DEBUG,
X 'JMVULL - No. long.pts per generated row = ', KLON)
CALL INTLOG(JP_DEBUG,
X 'JMVULL - Multiplication factor applied = ', KJPWR)
ENDIF
C
LATEST = 1
ZTOP = PSTART
ZBASE = PSTART - (KROWS - 1)*PLATINC
INROWS = KROWS
NROWS = INROWS
C
IF ( NDBG .GT. 1) THEN
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Current northernmost lat = ', ZTOP)
CALL INTLOGR(JP_DEBUG,
X 'JMVULL - Current southernmost lat = ', ZBASE)
ENDIF
C _______________________________________________________
C
C* Section 2. Processing more North than South, or more South
C than North.
C _______________________________________________________
C
200 CONTINUE
Cjdc IF ( ZTOP .GE. (-PSOUTH) ) THEN
IF( (PNORTH.GT.(-PSOUTH)) .AND. (ZTOP .GE. (-PSOUTH)) ) THEN
C
C Move excess northern latitudes ...
NROWS = NINT( ( ZTOP + PSOUTH )/PLATINC )
NROWS = MIN( NROWS, KROWS )
NFLAG = 1
C
IF ( NDBG .GT. 1) CALL INTLOG(JP_DEBUG,
X 'JMVULL - Move excess north latitudes = ', NROWS)
C
CALL JMOVLL( PZFA, PNORTH, PWEST, PLATINC, PLONINC, ZTOP, NROWS,
X KCOLS, KLON, KJPWR, POUTF, NFLAG)
C
ELSE
C
C Move excess southern latitudes ...
NROWS = NINT( ( ZTOP - PNORTH )/PLATINC )
NROWS = MIN( NROWS, KROWS )
NFLAG = 2
C
IF ( NDBG .GT. 1) CALL INTLOG(JP_DEBUG,
X 'JMVULL - Move excess south latitudes = ', NROWS)
C
CALL JMOVLL(PZFA, PNORTH, PWEST, PLATINC, PLONINC, PSTART,
X NROWS, KCOLS, KLON, KJPWR, POUTF, NFLAG)
ENDIF
C
ZTOP = ZTOP - (NROWS * PLATINC)
LATEST = LATEST + (2 * NROWS)
NROWS = INROWS - NROWS
C _______________________________________________________
C
C* Section 3. Processing latitudes common to both North and South.
C _______________________________________________________
C
300 CONTINUE
C
C Move rows common to both if any left ...
IF ( NROWS .GT. 0 ) THEN
C
IF ( NDBG .GT. 1) CALL INTLOG(JP_DEBUG,
X 'JMVULL - Move common latitudes(N & S) = ', NROWS)
C
NFLAG = 3
CALL JMOVLL( PZFA( 1, LATEST), PNORTH, PWEST, PLATINC, PLONINC,
X ZTOP, NROWS, KCOLS, KLON, KJPWR, POUTF, NFLAG)
ENDIF
C _______________________________________________________
C
C
C* Section 9. Return to calling routine. Format statements
C _______________________________________________________
C
900 CONTINUE
C
C
RETURN
END
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