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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 INTFB( INGRIB,INLEN,OUTGRIB,OUTLEN,FLDOUT)
C
C---->
C**** INTFB
C
C Purpose
C -------
C
C Interpolate input field...
C
C
C Interface
C ---------
C
C IRET = INTFB( INGRIB,INLEN,OUTGRIB,OUTLEN,FLDOUT)
C
C Input
C -----
C
C INGRIB - Input field (packed).
C INLEN - Input field length (words).
C
C
C Output
C ------
C
C OUTGRIB - Output field (packed).
C OUTLEN - Output field length (words).
C FLDOUT - Output field (unpacked).
C
C
C Method
C ------
C
C Call interpolation routines; then repack if GRIB output.
C
C Currently, subareas are not supported for reduced gaussian fields.
C (Works OK; but need to setup values in GRIB product for number of
C points in each latitude row)
C
C
C Externals
C ---------
C
C IARCNTL - Control interp. quasi reg.Gauss -> Gaussian or lat/long
C IAGCNTL - Control interpolation reg.Gaussian or lat/long fields.
C JSH2SH - Changes resolution of a field of spectral coefficients.
C JALLGP - Converts spectral fields to lat/long grid fields.
C JALLWN - Converts spectral wind fields to lat/long grids.
C JSLLGP - Converts strectched spectral fields to lat/long grid fields.
C JAGGGP - Converts spectral fields to a gaussian grid field.
C JSGGGP - Converts strectched spectral fields to a gaussian grid field.
C IBASINI - Ensure basic interpolation setup is done.
C GRIBEX - Decode/encode GRIB product.
C GRSVCK - Turn off GRIB checking
C IGSETUP - Setup GRIB sections for the output product.
C JMEMHAN - Handles memory allocation.
C IGLSIZE - Evaluate array sizes for reg. lat/long and area.
C IGSIZE - Evaluate array sizes for a regular Gaussian.
C IRSIZE - Evaluate array sizes for a quasi reg Gaussian.
C FIXAREA - Fixup area definition to correspond to grid definitions
C ISCRSZ - Calculate number of values in generated field.
C JDEBUG - Checks environment to switch on/off debug
C INTLOG - Log error message.
C INTLOGR - Log error message (real value).
C OCEANP - Interpolate GRIB ocean field.
C MKBITMP - Apply a bitmap to a rectangular field.
C MKFRAME - Create a 'frame' from a rectangular field.
C DDSTYLE - Create subgrid by selecting pts from rectangular grid.
C DSSAREA - Fixup field area (dissemination style).
C INTISL - Interpolate a field using ISLSCP processing.
C KRG2RG - Interpolate reduced gaussian to reduced gaussian (packed)
C KRG2RGU - Interpolate reduced gaussian to reduced gaussian (unpacked)
C KRG2RGD - Interpolate reduced gaussian to reduced gaussian
c using intermediate interpolation
C
C
C Author
C ------
C
C J.D.Chambers ECMWF Aug 1994
C
C J.D.Chambers ECMWF Feb 1997
C Allow for 64-bit pointers
C
C----<
C
IMPLICIT NONE
C
C Function arguments
C
INTEGER INGRIB(*),OUTGRIB(*),INLEN,OUTLEN
REAL FLDOUT(*)
C
#include "parim.h"
#include "nifld.common"
#include "nofld.common"
#include "grfixed.h"
#include "intf.h"
#include "jparams.h"
C
C Parameters
C
INTEGER JPROUTINE
INTEGER JUNPACK, JPREALB
PARAMETER (JPROUTINE = 26400 )
INTEGER JPIMISS,CLASMISS,KNEWMISS
PARAMETER (JPIMISS = -2147483647)
PARAMETER (CLASMISS = 9999)
REAL JPZMISS,NEWMISS
PARAMETER (JPZMISS = -2.1474836E+09)
PARAMETER (JUNPACK = 3000000)
PARAMETER (JPREALB = 8)
C
C Local variables
C
INTEGER NWEPTS, NNSPTS
REAL OLDS, OLDE
REAL EW, NS, NORTH, SOUTH, WEST, EAST, RTEMP
INTEGER IWORD, IERR, ILENF, ISIZE, IUV, IDISTEP
REAL PNORTH, PSOUTH, PWEST, PEAST, PLATINC, PLONINC
LOGICAL OIWEGLOBE, OINPOLE, OISPOLE
LOGICAL OOWEGLOBE, OONPOLE, OOSPOLE
LOGICAL LBITMP,LFRAME,LSTYLE,LGLOBAL,LSAMERS,LIQUASI
LOGICAL LOLDLSP, LOLDLSM
INTEGER INORTH, ISOUTH, IEAST, IWEST
INTEGER HOLDEW, HOLDNS, N_NOWE, N_NONS
INTEGER KILN, KITOTAL, KOLN, KOTOTAL, KPR, KERR
INTEGER LOOP, LOOPI, NEXT, ISWAP, NTRUNC, NTROLD, NTROLD2
INTEGER LENMED
INTEGER IOS, ILENS
REAL TEMP(2048)
C
DATA NTROLD/-1/, NTROLD2/-1/
SAVE NTROLD, NTROLD2
CHARACTER*1 HTYPE
CHARACTER*1 HFUNC
CHARACTER*6 YFLAG
#ifdef POINTER_64
#ifndef FUJITSU
INTEGER*8 IZNFLDO, IRWORK
#endif
#endif
REAL ZNFLDO , RWORK
POINTER ( IZNFLDO, ZNFLDO )
POINTER ( IRWORK, RWORK )
DIMENSION ZNFLDO( 1 ), RWORK(1)
INTEGER NEWLSM(1), OLDLSM(1)
POINTER( NIPNGRB, NEWLSM )
POINTER( NIPOGRB, OLDLSM )
LOGICAL LFIRST
DATA LFIRST/.TRUE./
SAVE LFIRST, IRWORK
C
C Externals
C
INTEGER IGLSIZE, IGSIZE, IRSIZE, IARCNTL, IAGCNTL, DSSAREA
INTEGER IGSETUP, FIXAREA, ISCRSZ, OCEANP, AURESOL, MKBITMP
INTEGER INTISL, KRG2RG, KRG2RGU, KRG2RGD, KRG2RGY
#ifdef POINTER_64
INTEGER*8 JMALLOC
#else
INTEGER JMALLOC
#endif
C
C -----------------------------------------------------------------|
C* Section 1. Initialise
C -----------------------------------------------------------------|
C
100 CONTINUE
INTFB = 0
IERR = 0
C
C Check if debug option turned on
CALL JDEBUG()
KPR = NDBG
C
LBITMP = LNOBITMP.AND.
X ((NOREPR.EQ.JPREGROT).OR.(NOREPR.EQ.JPREGULAR).OR.
X (NOREPR.EQ.JPGAUSSIAN))
C
LFRAME = LNOFRAME.AND.
X ((NOREPR.EQ.JPREGULAR).OR.(NOREPR.EQ.JPGAUSSIAN).OR.
X (NOREPR.EQ.JPREGROT ).OR.(NOREPR.EQ.JPFGGROT ) )
C
LSTYLE = LNOSTYLE.AND.
X (NOSTYLE.EQ.JPSDISM).AND.
X (NOREPR.EQ.JPREGULAR)
C
IF( .NOT.LWINDSET ) THEN
LWIND = ( ((NOTABLE.EQ.128).OR.(NOTABLE.EQ.129)).AND.
X ((NOPARAM.EQ.131).OR.(NOPARAM.EQ.132).OR.
X (NOPARAM.EQ.165).OR.(NOPARAM.EQ.166)) )
ENDIF
CALL INTLOG(JP_DEBUG,'INTFB: Wind flag = ', LWIND)
IF( LWIND ) THEN
IUV = 1
ELSE
IUV = 0
ENDIF
cs print to file binary because of decoders compare
CALL GETENV('DATA_CHECK', YFLAG)
IF(NIFORM.EQ.1) THEN
ILENS = ISEC4(1)
ELSE
ILENS = INLEN
ENDIF
IF( YFLAG(1:1).EQ.'1' ) THEN
OPEN (UNIT=16,FILE='./in.dat',STATUS='UNKNOWN',
& FORM='UNFORMATTED',IOSTAT=IOS)
IF (IOS.EQ.0) THEN
WRITE (16)(ZNFELDI(LOOP),LOOP=1,ILENS)
ENDIF
CLOSE(16)
cs print*,' a few ',ZNFELDI(1),ZNFELDI(2),ZNFELDI(3)
ENDIF
C
C If dissemination style selection of grid points is required,
C adjust the sub-area limits to the dissemination grid.
C
IF( LSTYLE ) THEN
IDISTEP = NINT(JPDISTP*PPMULT)
EW = NOGRID(1) / PPMULT
NS = NOGRID(2) / PPMULT
NORTH = REAL(NOAREA(1)) / PPMULT
WEST = REAL(NOAREA(2)) / PPMULT
SOUTH = REAL(NOAREA(3)) / PPMULT
EAST = REAL(NOAREA(4)) / PPMULT
C
IERR = DSSAREA( EW, NS, NORTH, WEST, SOUTH, EAST)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: DSSAREA failed:',IERR)
INTFB = IERR
GOTO 900
ENDIF
C
N_NOWE = NINT((EAST-WEST)/EW) + 1
N_NONS = NINT((NORTH-SOUTH)/NS) + 1
C
NOAREA(1) = NINT(NORTH * PPMULT)
NOAREA(2) = NINT(WEST * PPMULT)
NOAREA(3) = NINT(SOUTH * PPMULT)
NOAREA(4) = NINT(EAST * PPMULT)
ENDIF
C
C If Hirlam 12-point rotation involved, it has already been done
C (in INTFAPH), so just copy values to array for packing.
C
IF( LUSEHIR.AND.LNOROTA ) THEN
ISIZE = ISEC4(1)
IF( ISIZE.EQ.0 ) ISIZE = OUTLROT
CALL JMEMHAN( 3, IZNFLDO, ISIZE, 1, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_FATAL,'INTFB: Get scratch space fail',JPQUIET)
INTFB = JPROUTINE + 1
GOTO 900
ENDIF
C
DO LOOP = 1, ISIZE
ZNFLDO(LOOP) = ZNFELDI(LOOP)
ENDDO
GOTO 700
ENDIF
C
C -----------------------------------------------------------------|
C* Section 2. Special cases!
C -----------------------------------------------------------------|
C
200 CONTINUE
C
C Allocate work array ZNFELDI if not already done.
C
IF( IZNJDCI.NE.1952999238 ) THEN
CALL JMEMHAN( 19, IZNFLDI, JPEXPAND, 1, ierr)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: znfeldi allocate fail',JPQUIET)
INTFB = IERR
GOTO 900
ENDIF
IZNJDCI = 1952999238
ENDIF
C
C Is the interpolation from SH to grid point
C
IF( ((NIREPR.EQ.JPSPHERE).OR.(NIREPR.EQ.JPSPHROT).OR.
X (NIREPR.EQ.JPSTRSH))
X .AND.
X ((NOREPR.NE.JPSPHERE).AND.(NOREPR.NE.JPSPHROT)) ) THEN
C
NTRUNC = NORESO
C
C Check whether a truncation is required before interpolation
C
IF( .NOT.LNORESO ) THEN
C
C If user did not supply a truncation value, see whether or
C not the 'autoresol' flag is set. If not, use the input
C truncation.
C
IF( LARESOL ) THEN
IF( (NOREPR.EQ.JPREGULAR).OR.(NOREPR.EQ.JPREGROT) ) THEN
EW = FLOAT(NOGRID(1))/PPMULT
NS = FLOAT(NOGRID(2))/PPMULT
ELSE
EW = 90.0/FLOAT(NOGAUSS)
NS = EW
ENDIF
NTRUNC = AURESOL(EW,NS)
IF( NTRUNC.NE.NTROLD ) THEN
NTROLD = NTRUNC
CALL INTLOG(JP_WARN,
X 'INTFB: Resolution automatically set to ', NTRUNC)
ENDIF
ELSE
NTRUNC = NIRESO
ENDIF
C
ELSE
C
C
ENDIF
C
C Check whether the output resolution is greater than the input
C
IF( NTRUNC.GT.NIRESO ) THEN
C
C Issue warning if the output resolution was user-supplied
C
IF( .NOT.LARESOL ) THEN
C
C Revert to the input truncation
C
IF( NIRESO.NE.NTROLD2 ) THEN
CALL INTLOG(JP_WARN,
X 'INTFB: spectral -> grid point interpolation',JPQUIET)
CALL INTLOG(JP_WARN,
X 'INTFB: User supplied resolution = ',NTRUNC)
CALL INTLOG(JP_WARN,
X 'INTFB: Input field resolution = ',NIRESO)
CALL INTLOG(JP_WARN,
X 'INTFB: User supplied resolution ignored',JPQUIET)
CALL INTLOG(JP_WARN,
X 'INTFB: Input field resolution has been used',JPQUIET)
NTROLD2 = NIRESO
ENDIF
NTRUNC = NIRESO
C
ELSE
C
C Revert to the input truncation if auto RESOL
C
NTRUNC = NIRESO
IF( NTRUNC.NE.NTROLD2 ) THEN
NTROLD2 = NTRUNC
CALL INTLOG(JP_WARN,
X 'INTFB: Automatic resolution selectn too high:',JPQUIET)
CALL INTLOG(JP_WARN,
X 'INTFB: Resolution reset to input resolution: ',NTRUNC)
ENDIF
ENDIF
C
ENDIF
C
C Truncate if a smaller resolution has been requested
C
IF( NTRUNC.LT.NIRESO ) THEN
CALL INTLOG(JP_DEBUG,
X 'INTFB: Spectral coefficents truncated to ', NTRUNC)
C
ISIZE = (NTRUNC+1)*(NTRUNC+4)
CALL JMEMHAN( 3, IZNFLDO, ISIZE, 1, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_FATAL,
X 'INTFB: Get scratch space failed',JPQUIET)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
C
C Generate spherical harmonics with output truncation
C
CALL SH2SH( ZNFELDI, NIRESO, ZNFLDO, NTRUNC )
C
C Move new spherical harmonics to 'input' array
C
DO LOOP = 1, ISIZE
ZNFELDI(LOOP) = ZNFLDO(LOOP)
ENDDO
C
NIRESO = NTRUNC
C
ENDIF
C
ENDIF
C
C Is it an ocean field interpolation?
C
IF( (ISEC1(24).EQ.1) .AND.
X (ISEC1(37).EQ.4) .AND.
X (NIFORM.EQ.1) .AND.
X (NOFORM.EQ.1) ) THEN
IERR = OCEANP(INGRIB,INLEN,OUTGRIB,OUTLEN)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Ocean interpolation failed.',JPQUIET)
INTFB = JPROUTINE + 2
ELSE
CALL INTLOG(JP_DEBUG,
X 'INTFB: Ocean interpolation finished successfully.',JPQUIET)
ENDIF
GOTO 900
ENDIF
C
C -----------------------------------------------------------------|
C* Section 3. Interpolation spherical harmonics to spherical
C harmonics
C -----------------------------------------------------------------|
C
300 CONTINUE
C
IF( ((NIREPR.EQ.JPSPHERE).OR.(NIREPR.EQ.JPSPHROT)) .AND.
X ((NOREPR.EQ.JPSPHERE).OR.(NOREPR.EQ.JPSPHROT) ) ) THEN
C
C Get scratch space for interpolation
C
CALL INTLOG(JP_DEBUG,'INTFB: SH -> SH, input is ',NIRESO)
CALL INTLOG(JP_DEBUG,'INTFB: output is ',NORESO)
ISIZE = ISCRSZ()
IF( ISIZE.LE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Get scratch space failed.',ISIZE)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
CALL JMEMHAN( 3, IZNFLDO, ISIZE, 1, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Get scratch space fail.',JPQUIET)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
C
CALL SH2SH( ZNFELDI, NIRESO, ZNFLDO, NORESO )
C
GOTO 700
C
C If not spectral -> spectral transformation, make sure the input
C and output area definitions have been setup.
C
ELSE
C
C Fixup area definition to correspond to grid definitions
C
IF( .NOT.LSTYLE ) THEN
IERR = FIXAREA()
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Fixup area definition failed.',JPQUIET)
INTFB = JPROUTINE + 9
GOTO 900
ENDIF
ENDIF
C
C Setup geographical limits
C
PNORTH = FLOAT( NOAREA(1) ) / PPMULT
PWEST = FLOAT( NOAREA(2) ) / PPMULT
PSOUTH = FLOAT( NOAREA(3) ) / PPMULT
PEAST = FLOAT( NOAREA(4) ) / PPMULT
C
ENDIF
C
C -----------------------------------------------------------------|
C Section 4. Interpolation spherical harmonics to grid point.
C -----------------------------------------------------------------|
C
400 CONTINUE
C
IF( (NIREPR.EQ.JPSPHERE).OR.
X (NIREPR.EQ.JPSTRSH) .OR.
X (NIREPR.EQ.JPSPHROT) ) THEN
#ifndef REAL_8
C
C Check that double precision floats are in use if spectral
C resolution is greater than T213
C
IF( NIRESO.GT.213 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Double precision must be used',JPQUIET)
CALL INTLOG(JP_ERROR,'INTFB: for spectral resolution ',NIRESO)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
#endif
CALL INTLOG(JP_DEBUG,'INTFB: SH -> grid point',JPQUIET)
C
C Get scratch space for interpolation
C If dissemination style, space has to be for a 0.5x0.5 grid
C
IF( LSTYLE ) THEN
HOLDEW = NOGRID(1)
HOLDNS = NOGRID(2)
NOGRID(1) = IDISTEP
NOGRID(2) = IDISTEP
ENDIF
ISIZE = ISCRSZ()
IF( ISIZE.LE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Get scratch space failed.',ISIZE)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
C
CALL JMEMHAN( 3, IZNFLDO, ISIZE, 1, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Get scratch space fail.',JPQUIET)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
IF( LSTYLE ) THEN
NOGRID(1) = HOLDEW
NOGRID(2) = HOLDNS
ENDIF
C
C -----------------------------------------------------------------|
C* Section 4.1 Interpolation spherical harmonics to grid point.
C -----------------------------------------------------------------|
C
410 CONTINUE
C
IF( (NOREPR.EQ.JPREGULAR) .OR. (NOREPR.EQ.JPREGROT) ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: SH -> lat/long',JPQUIET)
C
C -> latitude/longitude grid
C If dissemination style, generated grid is 0.5x0.5
C
IF( LSTYLE ) THEN
HOLDEW = NOGRID(1)
HOLDNS = NOGRID(2)
NOGRID(1) = IDISTEP
NOGRID(2) = IDISTEP
ENDIF
PLONINC = FLOAT( NOGRID(1) ) / PPMULT
PLATINC = FLOAT( NOGRID(2) ) / PPMULT
C
C Special handling for stretched fields
C
IF( RISTRET.NE.0 ) THEN
CALL JSLLGP( ZNFELDI, NIRESO, PNORTH, PSOUTH, PWEST, PEAST,
X PLATINC, PLONINC, ZNFLDO, IERR)
C
ELSE
IF( LWIND ) THEN
CALL JALLWN(ZNFELDI, NIRESO, PNORTH, PSOUTH, PWEST, PEAST,
X PLATINC, PLONINC, ZNFLDO, IERR)
ELSE
CALL JALLGP(ZNFELDI, NIRESO, PNORTH, PSOUTH, PWEST, PEAST,
X PLATINC, PLONINC, ZNFLDO, IERR)
ENDIF
ENDIF
C
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Interpolation to lat/long field failed.',JPQUIET)
INTFB = JPROUTINE + 3
GOTO 900
ENDIF
C
IF( LSTYLE ) THEN
NOGRID(1) = HOLDEW
NOGRID(2) = HOLDNS
ENDIF
C
GOTO 700
C
ENDIF
C
C
IF( NOREPR.EQ.JPGAUSSIAN ) THEN
C
C -> regular gaussian grid
C
CALL INTLOG(JP_DEBUG,'INTFB: SH -> regular gaussian.',JPQUIET)
C
C Is it a user_regular_gaussian (or standard regular gaussian)..
C
IF( LOGIVEL ) THEN
HTYPE = 'U'
ELSE
HTYPE = 'F'
ENDIF
C
C Special handling for stretched fields
C
IF( RISTRET.NE.0 ) THEN
CALL JSGGGP( ZNFELDI, NIRESO, PNORTH, PSOUTH, PWEST, PEAST,
X NOGAUSS, HTYPE, NOLPTS, ZNFLDO, IUV, IERR)
ELSE
CALL JAGGGP( ZNFELDI, NIRESO, PNORTH, PSOUTH, PWEST, PEAST,
X NOGAUSS, HTYPE, NOLPTS, ZNFLDO, IUV, IERR)
C
ENDIF
IF( IERR .NE. 0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Interpolation to gaussian field failed.',JPQUIET)
INTFB = JPROUTINE + 4
GOTO 900
ENDIF
C
GOTO 700
C
ENDIF
C
C
IF( NOREPR.EQ.JPQUASI ) THEN
C
C -> reduced gaussian grid
C
CALL INTLOG(JP_DEBUG,'INTFB: SH -> quasi gaussian.',JPQUIET)
C
C Is it a user_reduced_gaussian (or standard reduced gaussian)?
C
IF( LOGIVEP ) THEN
HTYPE = 'U'
ELSE
HTYPE = 'R'
ENDIF
C
C Special handling for stretched fields
C
IF( RISTRET.NE.0 ) THEN
CALL JSGGGP( ZNFELDI, NIRESO, PNORTH, PSOUTH, PWEST, PEAST,
X NOGAUSS, HTYPE, NOLPTS, ZNFLDO, IUV, IERR)
ELSE
CALL JAGGGP( ZNFELDI, NIRESO, PNORTH, PSOUTH, PWEST, PEAST,
X NOGAUSS, HTYPE, NOLPTS, ZNFLDO, IUV, IERR)
ENDIF
IF( IERR .NE. 0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Interpolation to quasi GG field failed.',JPQUIET)
INTFB = JPROUTINE + 4
GOTO 900
ENDIF
C
GOTO 700
C
ENDIF
C
C Dropthrough => unrecognized output field type
C
IERR = JPROUTINE + 1
CALL INTLOG(JP_ERROR,
X 'INTFB: Unrecognized output field type.',NOREPR)
INTFB = IERR
GOTO 900
C
ENDIF
C
C -----------------------------------------------------------------|
C Section 5. Interpolate Gaussian grid to grid point.
C -----------------------------------------------------------------|
C
500 CONTINUE
C
C If Hirlam 12-point rotation involved, it has already been done
C (in INTFAPH), so just copy values to array for packing.
C
IF( LUSEHIR.AND.LNOROTA ) THEN
C
ISIZE = ISCRSZ()
IF( ISIZE.LE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Get scratch space fail',ISIZE)
INTFB = JPROUTINE + 5
GOTO 900
ENDIF
CALL JMEMHAN( 3, IZNFLDO, ISIZE, 1, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_FATAL,
X 'INTFB: Get scratch space failed',JPQUIET)
INTFB = JPROUTINE + 5
GOTO 900
ENDIF
C
DO LOOP = 1, ISIZE
ZNFLDO(LOOP) = ZNFELDI(LOOP)
ENDDO
GOTO 700
ENDIF
C
C Handle ISLSCP processing
C
IF( LNIISCL ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: Using ISLSCP processing',JPQUIET)
IERR = INTISL(OLDLSM, INGRIB, NEWLSM, OUTGRIB)
IF( IERR.LT.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: ISLSCP processing fail',NIGAUSS)
INTFB = JPROUTINE + 10
GOTO 900
ENDIF
OUTLEN = (IERR+JPBYTES-1)/JPBYTES
GOTO 900
ENDIF
C
C Reduced gaussian to reduced gaussian
C
LIQUASI = (NIREPR.EQ.JPQUASI)
C
IF( (LIQUASI.AND.(NOREPR.EQ.JPQUASI)) ) THEN
IF( LDOUBLE ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: RG to RG with intermediate'
X ,JPQUIET)
IERR = KRG2RGD(INGRIB,OUTGRIB,NOMEGA,NOGAUSS)
IF(IERR.LT.0) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: KRG2RGD processing failed',JPQUIET)
INTFB = JPROUTINE + 10
ELSE
OUTLEN = (IERR+JPBYTES-1)/JPBYTES
ENDIF
ELSE
IF( (NIFORM.EQ.1).AND.(NOFORM.EQ.1) ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: RG to RG packed',JPQUIET)
IERR = KRG2RG(INGRIB,OUTGRIB,NOGAUSS)
IF(IERR.LT.0) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: KRG2RG processing failed',JPQUIET)
INTFB = JPROUTINE + 10
ELSE
OUTLEN = (IERR+JPBYTES-1)/JPBYTES
ENDIF
ELSE
CALL INTLOG(JP_DEBUG,'INTFB: RG to RG unpacked',JPQUIET)
IERR = KRG2RGU(INGRIB,FLDOUT,NIGAUSS,NOGAUSS)
IF(IERR.LT.0) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: KRG2RGU processing failed',JPQUIET)
INTFB = JPROUTINE + 10
ELSE
OUTLEN = (IERR+JPBYTES-1)/JPBYTES
ENDIF
ENDIF
ENDIF
GOTO 900
ENDIF
C
C Setup flags for input and output fields
C
CALL INTLOG(JP_DEBUG,'INTFB: grid point -> grid point.',JPQUIET)
KERR = 1
IF( NIREPR .EQ. JPQUASI ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: quasi input ',NIGAUSS)
IERR = IRSIZE( NIGAUSS, NIAREA, MILLEN, NIWE, NINS, KILN,
X KITOTAL, RIGAUSS, OIWEGLOBE, OINPOLE, OISPOLE,
X KPR, KERR)
ELSE IF( NIREPR.EQ.JPGAUSSIAN ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: regular gauss input ',NIGAUSS)
IERR = IGSIZE( NIGAUSS, NIAREA, NIWE, NINS, KILN, RIGAUSS,
X OIWEGLOBE, OINPOLE, OISPOLE, KPR, KERR)
ELSE
CALL INTLOG(JP_DEBUG,'INTFB: lat/long input lat ',NIGRID(1))
CALL INTLOG(JP_DEBUG,'INTFB: lat/long input long ',NIGRID(2))
IERR = IGLSIZE( NIGRID, NIAREA, NIWE, NINS, KILN, OIWEGLOBE,
X OINPOLE, OISPOLE, KPR, KERR)
ENDIF
C
NONS = 0
NOWE = 0
IF( (NOREPR.EQ.JPQUASI).OR.(NOREPR.EQ.JPQGGROT) ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: quasi output ',NOGAUSS)
IERR = IRSIZE( NOGAUSS, NOAREA, NOLPTS, NOWE, NONS, KOLN,
X KOTOTAL, ROGAUSS, OOWEGLOBE, OONPOLE, OOSPOLE,
X KPR, KERR)
ELSE IF( (NOREPR.EQ.JPGAUSSIAN).OR.(NOREPR.EQ.JPFGGROT) ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: regular gauss output ',NOGAUSS)
IERR = IGSIZE( NOGAUSS, NOAREA, NOWE, NONS, KOLN, ROGAUSS,
X OOWEGLOBE, OONPOLE, OOSPOLE, KPR, KERR)
ELSE
CALL INTLOG(JP_DEBUG,'INTFB: lat/long output lat ',NOGRID(1))
CALL INTLOG(JP_DEBUG,'INTFB: lat/long output long ',NOGRID(2))
C
C If dissemination style, space has to be for a 0.5x0.5 grid
C
IF( LSTYLE ) THEN
HOLDEW = NOGRID(1)
HOLDNS = NOGRID(2)
If (.Not.LNOROTA) Then ! D.Jokic; Mar-2005
NOGRID(1) = IDISTEP
NOGRID(2) = IDISTEP
End if ! D.Jokic; Mar-2005
ENDIF
IERR = IGLSIZE( NOGRID, NOAREA, NOWE, NONS, KOLN, OOWEGLOBE,
X OONPOLE, OOSPOLE, KPR, KERR)
ENDIF
C
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Setup of gaussian field flags failed.',IERR)
INTFB = JPROUTINE + 6
GOTO 900
ENDIF
C
C -----------------------------------------------------------------|
C Section 5.1 Interpolate reduced Gaussian grid to grid point.
C -----------------------------------------------------------------|
C
510 CONTINUE
C
ISIZE = ISCRSZ()
IF( ISIZE.LE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Get scratch space failed.',ISIZE)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
C
CALL JMEMHAN( 3, IZNFLDO, ISIZE, 1, IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Get scratch space failed.',JPQUIET)
INTFB = JPROUTINE + 2
GOTO 900
ENDIF
C
IF( NIREPR.EQ.JPQUASI ) THEN
C
C If Hirlam 12-point rotation involved, it has already been done
C (in INTFAPH), so just copy values to array for packing.
C
IF( LUSEHIR.AND.LNOROTA ) THEN
DO LOOP = 1, ISIZE
ZNFLDO(LOOP) = ZNFELDI(LOOP)
ENDDO
ELSE
C Sinisa - if double interpolation involved
IF( LDOUBLE ) THEN
IF( NOMEGA.EQ.NIGAUSS ) THEN
CALL INTLOG(JP_DEBUG,
X 'INTFB: Input and Intermed. Gaussian number are same',JPQUIET)
CALL INTLOG(JP_DEBUG,
X 'INTFB: Double interpolation is not performed',JPQUIET)
ELSE
CALL INTLOG(JP_DEBUG,
X 'INTFB: RG2RG unpacked - double interpolation',JPQUIET)
IF( LFIRST ) THEN
LFIRST = .FALSE.
ISIZE = JUNPACK*JPREALB
IRWORK = JMALLOC(ISIZE)
IF( IRWORK.EQ.0 ) THEN
CALL INTLOG(JP_FATAL,
X 'INTFB: Get scratch space fail',JPQUIET)
INTFB = JPROUTINE + 1
GOTO 900
ENDIF
ENDIF
IERR = KRG2RGY(INGRIB,RWORK,NOMEGA)
IF(IERR.LT.0) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: KRG2RGY processing failed',JPQUIET)
INTFB = JPROUTINE + 10
ELSE
LENMED = IERR
ENDIF
DO LOOP = 1, LENMED
ZNFELDI(LOOP) = RWORK(LOOP)
ENDDO
IERR = FIXAREA()
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Fixup area definition failed. DI',JPQUIET)
INTFB = JPROUTINE + 9
GOTO 900
ENDIF
CALL INTLOG(JP_DEBUG,
X 'INTFB: quasi input double interolation ',NIGAUSS)
CALL JGETGG( NIGAUSS, 'R', RIGAUSS, MILLEN, IERR)
IF ( IERR .NE. 0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: JGETGG fail - double interpolation ',JPQUIET)
INTFB = JPROUTINE + 10
GOTO 900
ENDIF
IERR = IRSIZE( NIGAUSS, NIAREA, MILLEN, NIWE, NINS, KILN,
X KITOTAL, RIGAUSS, OIWEGLOBE, OINPOLE, OISPOLE,
X KPR, KERR)
ENDIF
ENDIF
C
C If reduced gaussian to regular gaussian of same resolution,
C turn off the land-sea mask processing temporarily
C
LSAMERS = (NIGAUSS.EQ.NOGAUSS)
LOLDLSM = LSM
LOLDLSP = LSMPAR
IF( (LIQUASI.AND.(NOREPR.EQ.JPGAUSSIAN).AND.LSAMERS) ) THEN
CALL INTLOG(JP_DEBUG,
X 'INTFB: turn off any LSM processing temporarily ', JPQUIET)
LSM = .FALSE.
LSMPAR = .FALSE.
ENDIF
IERR = IARCNTL( ZNFELDI, JPEXPAND, ZNFLDO, ISIZE, KILN,
X OIWEGLOBE, OINPOLE, OISPOLE, KOLN, OOWEGLOBE,
X OONPOLE, OOSPOLE, KPR ,KERR)
LSM = LOLDLSM
LSMPAR = LOLDLSP
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Interpolation from quasi GG field failed',JPQUIET)
INTFB = JPROUTINE + 7
GOTO 900
ENDIF
C
IF( LSTYLE ) THEN
NOGRID(1) = HOLDEW
NOGRID(2) = HOLDNS
ENDIF
ENDIF
C
GOTO 700
C
ENDIF
C
C -----------------------------------------------------------------|
C* Section 6. Interpolate regular grid point to grid point.
C -----------------------------------------------------------------|
C
600 CONTINUE
C
IERR = IAGCNTL( ZNFELDI, JPEXPAND, ZNFLDO, ISIZE, KILN,
X OIWEGLOBE, OINPOLE, OISPOLE, KOLN, OOWEGLOBE,
X OONPOLE, OOSPOLE, KPR, KERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Interpolation from regular field failed.',JPQUIET)
INTFB = JPROUTINE + 8
GOTO 900
ENDIF
C
IF( LSTYLE ) THEN
NOGRID(1) = HOLDEW
NOGRID(2) = HOLDNS
ENDIF
C
C -----------------------------------------------------------------|
C* Section 7. Pack field into GRIB if necessary.
C -----------------------------------------------------------------|
C
700 CONTINUE
C
C If dissemination 'style' selection has been chosen, select points.
C
IF( LSTYLE ) THEN
CALL DDSTYLE(ZNFLDO,IDISTEP,IDISTEP,NOGRID(1),NOGRID(2),IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,
X 'INTFB: Wrong requested grid increment for dissemination style'
X ,JPQUIET)
INTFB = JPROUTINE + 3
GOTO 900
ENDIF
NOWE = N_NOWE
NONS = N_NONS
cs to check if it ruin gribex packing
ISIZE = NOWE*NONS
ENDIF
C
C If a 'bitmap' has been specified, build the bitmap
C
IF( (LFRAME.OR.LBITMP).AND.NOFORM.NE.1 ) THEN
ISEC1(5) = 192
IF( LIMISSV ) THEN
KNEWMISS = NINT(RMISSGV)
ELSE
KNEWMISS = CLASMISS
ENDIF
ISEC3(2) = KNEWMISS
ZSEC3(2) = REAL(KNEWMISS)
NEWMISS = REAL(KNEWMISS)
ELSE
NEWMISS = JPZMISS
ENDIF
IF( LBITMP ) THEN
cs IERR = MKBITMP(NOWE,NONS,ZNFLDO,JPZMISS)
IERR = MKBITMP(NOWE,NONS,ZNFLDO,NEWMISS)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Problem applying bitmap',JPQUIET)
INTFB = IERR
GOTO 900
ENDIF
ENDIF
C
C If a 'frame' has been specified, build the frame
C
cs IF( LFRAME ) CALL MKFRAME(NOWE,NONS,ZNFLDO,JPZMISS,NOFRAME)
IF( LFRAME ) CALL MKFRAME(NOWE,NONS,ZNFLDO,NEWMISS,NOFRAME)
C
C If the output is a GRIB product
C
IF( NOFORM.EQ.1 ) THEN
CALL INTLOG(JP_DEBUG,'INTFB: pack field for output',JPQUIET)
C
C Setup GRIB sections for the output product
C
IERR = IGSETUP( ISEC1, ISEC2, ISEC4 )
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: Setup GRIB section fail',JPQUIET)
INTFB = IERR
GOTO 900
ENDIF
C
IF( LFRAME.OR.LBITMP ) THEN
ISEC1(5) = 192
ISEC3(2) = JPIMISS
ZSEC3(2) = JPZMISS
ENDIF
C
C If there are missing values, set all values to zero
C
IF( NOMISS.NE.0 ) THEN
DO LOOP = 1, ISEC2(2)*ISEC2(3)
ZNFLDO(LOOP) = 0.0
ENDDO
ENDIF
C
C Make adjustments for 'dissemination style'
C
IF( LNOSTYLE.AND.(NOSTYLE.EQ.JPSDISM) ) THEN
C
C Turn off use of ECMWF local definition
C
Cjdc ISEC1(24) = 0
C
C For regular lat/long or gaussian grids, calculate the grid
C i-direction increment using truncation
C
IF( (ISEC2(1).NE.50).AND.(ISEC2(1).NE.60).AND.
X (ISEC2(1).NE.70).AND.(ISEC2(1).NE.80) ) THEN
C
IF( (ISEC2(1).NE.5).AND.(ISEC2(17).EQ.0) ) THEN
IF( NOSTYLE.NE.JPSDISM)
X ISEC2(9) = (ISEC2(8) - ISEC2(5)) / (ISEC2(2) - 1)
ENDIF
C
ENDIF
C
ENDIF
C
C Code data into GRIB
C
ILENF = ISIZE
IERR = 1
C
C If grid-point output, setup for 2nd order packing if requested.
C
IF( (NOREPR.NE.JPSPHERE) .AND. (NOREPR.NE.JPSPHROT) ) THEN
HFUNC = 'C'
IF( NOHFUNC.EQ.'K' ) THEN
HFUNC = 'K'
ISEC4(4) = 64
ISEC4(6) = 16
ISEC4(9) = 32
ISEC4(10) = 16
ISEC4(12) = 8
ISEC4(13) = 4
ISEC4(14) = 0
ISEC4(15) = -1
C
C
IF( NOREPR.EQ.JPQUASI ) THEN
C
C Complex packing does not support sub-areas of reduced
C gaussian grids. If output is reduced gaussian, check if
C it is global to within a tolerance of 0.1 degrees.
C
LGLOBAL = .TRUE.
INORTH = NINT( ROGAUSS(1) * PPMULT )
IF( IABS(NOAREA(1)-INORTH).GT.1000) LGLOBAL = .FALSE.
ISOUTH = - INORTH
IF( IABS(NOAREA(3)-ISOUTH).GT.1000) LGLOBAL = .FALSE.
IF( NOAREA(2).NE.0 ) LGLOBAL = .FALSE.
IEAST = JP360 - (JP90/NOGAUSS)
IF( IABS(NOAREA(4)-IEAST).GT.1000) LGLOBAL = .FALSE.
C
C Use simple packing if not global.
C
IF( .NOT. LGLOBAL ) THEN
HFUNC = 'C'
ISEC4(4) = 0
ISEC4(6) = 0
ENDIF
ENDIF
C
ELSE IF( NOHFUNC.EQ.'S' ) THEN
ISEC4(4) = 0
ISEC4(6) = 0
ENDIF
C
ELSE
HFUNC = 'C'
IF( NOHFUNC.EQ.'C' ) THEN
ISEC2(6) = 2
ISEC4(4) = 64
ELSE IF( NOHFUNC.EQ.'S' ) THEN
ISEC2(6) = 1
ISEC4(4) = 0
ENDIF
ENDIF
C
IF( LIMISSV ) THEN
ISEC1(5) = 192
ISEC3(2) = NINT(RMISSGV)
ZSEC3(2) = RMISSGV
ENDIF
C
C For interpolated regular lat/long field, flip latitudes if
C they run from south to north
C (handles special case , eg KWBC SST fields)
C
IF( LNOGRID.AND.
X (NOREPR.EQ.JPREGULAR).AND.
X (NOAREA(1).LT.NOAREA(3)) ) THEN
C
CALL INTLOG(JP_DEBUG,
X 'INTFB: Flip latitudes to run North to South', JPQUIET)
DO LOOP = 1, ISEC2(3)/2
NEXT = 1 + (LOOP - 1)*ISEC2(2)
ISWAP = (ISEC2(3) - LOOP)*ISEC2(2) + 1
DO LOOPI = 1, ISEC2(2)
RTEMP = ZNFLDO(ISWAP)
ZNFLDO(ISWAP) = ZNFLDO(NEXT)
ZNFLDO(NEXT) = RTEMP
NEXT = NEXT + 1
ISWAP = ISWAP + 1
ENDDO
ENDDO
ENDIF
C
IF( YFLAG(1:1).EQ.'1' ) THEN
OPEN (UNIT=17,FILE='./out_gribex.dat',STATUS='UNKNOWN',
& FORM='UNFORMATTED',IOSTAT=IOS)
IF (IOS.EQ.0) THEN
WRITE (17)(ZNFLDO(LOOP),LOOP=1,ILENF)
ENDIF
CLOSE(17)
cs print*,' a few OUT gribex => ',ZNFLDO(1),ZNFLDO(2),ZNFLDO(3)
ENDIF
CALL GRIBEX( ISEC0, ISEC1, ISEC2, ZSEC2, ISEC3, ZSEC3, ISEC4,
X ZNFLDO,ILENF,OUTGRIB,OUTLEN,IWORD,HFUNC,IERR)
IF( IERR.NE.0 ) THEN
CALL INTLOG(JP_ERROR,'INTFB: GRIBEX encoding failed.',IERR)
INTFB = JPROUTINE + 5
GOTO 900
ENDIF
OUTLEN = IWORD
C
C Switch off use of missing value
C
LIMISSV = .FALSE.
C
ELSE
C
C Otherwise, move unpacked values to user array
C
IF( YFLAG(1:1).EQ.'1' ) THEN
OPEN (UNIT=18,FILE='./out_gribapi.dat',STATUS='UNKNOWN',
& FORM='UNFORMATTED',IOSTAT=IOS)
IF (IOS.EQ.0) THEN
WRITE (18)(ZNFLDO(LOOP),LOOP=1,ISIZE)
ENDIF
CLOSE(18)
cs print*,' a few OUT gribapi => ',ZNFLDO(1),ZNFLDO(2),ZNFLDO(3)
ENDIF
DO LOOP = 1, ISIZE
FLDOUT( LOOP ) = ZNFLDO( LOOP )
ENDDO
C
C and return the number of values, the unpacked array length
C
OUTLEN = ISIZE
ENDIF
C
C -----------------------------------------------------------------|
C* Section 9. Closedown.
C -----------------------------------------------------------------|
C
900 CONTINUE
C
C Clear change flags for next product processing
C
LCHANGE = .FALSE.
LSMCHNG = .FALSE.
C
RETURN
END
|
