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! |
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! $Header: /home/cvsroot/LMDZ4/libf/filtrez/filtreg.F,v 1.1.1.1 2004/05/19 12:53:09 lmdzadmin Exp $ |
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! |
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SUBROUTINE filtreg ( champ, nlat, nbniv, ifiltre,iaire, |
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. griscal ,iter) |
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|
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use dimens_m |
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use paramet_m |
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IMPLICIT NONE |
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c======================================================================= |
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c |
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c Auteur: P. Le Van 07/10/97 |
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c ------ |
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c |
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c Objet: filtre matriciel longitudinal ,avec les matrices precalculees |
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c pour l'operateur Filtre . |
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c ------ |
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c |
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c Arguments: |
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c ---------- |
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c |
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c nblat nombre de latitudes a filtrer |
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c nbniv nombre de niveaux verticaux a filtrer |
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c champ(iip1,nblat,nbniv) en entree : champ a filtrer |
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c en sortie : champ filtre |
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c ifiltre +1 Transformee directe |
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c -1 Transformee inverse |
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c +2 Filtre directe |
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c -2 Filtre inverse |
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c |
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c iaire 1 si champ intensif |
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c 2 si champ extensif (pondere par les aires) |
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c |
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c iter 1 filtre simple |
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c |
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c======================================================================= |
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c |
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c |
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c Variable Intensive |
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c ifiltre = 1 filtre directe |
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c ifiltre =-1 filtre inverse |
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c |
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c Variable Extensive |
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c ifiltre = 2 filtre directe |
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c ifiltre =-2 filtre inverse |
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c |
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c |
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include "parafilt.h" |
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include "coefils.h" |
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c |
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INTEGER nlat,nbniv,ifiltre,iter |
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INTEGER i,j,l,k |
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INTEGER iim2,immjm |
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INTEGER jdfil1,jdfil2,jffil1,jffil2,jdfil,jffil |
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|
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REAL champ( iip1,nlat,nbniv) |
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REAL matriceun,matriceus,matricevn,matricevs,matrinvn,matrinvs |
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COMMON/matrfil/matriceun(iim,iim,nfilun),matriceus(iim,iim,nfilus) |
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, , matricevn(iim,iim,nfilvn),matricevs(iim,iim,nfilvs) |
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, , matrinvn(iim,iim,nfilun),matrinvs (iim,iim,nfilus) |
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REAL eignq(iim), sdd1(iim),sdd2(iim) |
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LOGICAL griscal |
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INTEGER hemisph, iaire |
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c |
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|
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IF(ifiltre.EQ.1.or.ifiltre.EQ.-1) |
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* STOP'Pas de transformee simple dans cette version' |
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|
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IF( iter.EQ. 2 ) THEN |
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PRINT *,' Pas d iteration du filtre dans cette version !' |
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* , ' Utiliser old_filtreg et repasser !' |
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STOP |
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ENDIF |
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|
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IF( ifiltre.EQ. -2 .AND..NOT.griscal ) THEN |
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PRINT *,' Cette routine ne calcule le filtre inverse que ', |
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* ' sur la grille des scalaires !' |
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STOP |
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ENDIF |
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|
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IF( ifiltre.NE.2 .AND.ifiltre.NE. - 2 ) THEN |
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PRINT *,' Probleme dans filtreg car ifiltre NE 2 et NE -2' |
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*,' corriger et repasser !' |
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STOP |
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ENDIF |
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c |
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|
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iim2 = iim * iim |
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immjm = iim * jjm |
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c |
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c |
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IF( griscal ) THEN |
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IF( nlat. NE. jjp1 ) THEN |
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PRINT 1111 |
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STOP |
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ELSE |
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c |
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IF( iaire.EQ.1 ) THEN |
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CALL SCOPY( iim, sddv, 1, sdd1, 1 ) |
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CALL SCOPY( iim, unsddv, 1, sdd2, 1 ) |
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ELSE |
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CALL SCOPY( iim, unsddv, 1, sdd1, 1 ) |
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CALL SCOPY( iim, sddv, 1, sdd2, 1 ) |
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END IF |
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c |
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jdfil1 = 2 |
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jffil1 = jfiltnu |
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jdfil2 = jfiltsu |
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jffil2 = jjm |
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END IF |
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ELSE |
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IF( nlat.NE.jjm ) THEN |
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PRINT 2222 |
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STOP |
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ELSE |
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c |
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IF( iaire.EQ.1 ) THEN |
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CALL SCOPY( iim, sddu, 1, sdd1, 1 ) |
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CALL SCOPY( iim, unsddu, 1, sdd2, 1 ) |
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ELSE |
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CALL SCOPY( iim, unsddu, 1, sdd1, 1 ) |
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CALL SCOPY( iim, sddu, 1, sdd2, 1 ) |
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END IF |
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c |
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jdfil1 = 1 |
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jffil1 = jfiltnv |
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jdfil2 = jfiltsv |
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jffil2 = jjm |
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END IF |
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END IF |
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c |
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c |
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DO 100 hemisph = 1, 2 |
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c |
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IF ( hemisph.EQ.1 ) THEN |
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jdfil = jdfil1 |
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jffil = jffil1 |
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ELSE |
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jdfil = jdfil2 |
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jffil = jffil2 |
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END IF |
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|
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|
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DO 50 l = 1, nbniv |
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DO 30 j = jdfil,jffil |
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|
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|
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DO 5 i = 1, iim |
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champ(i,j,l) = champ(i,j,l) * sdd1(i) |
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5 CONTINUE |
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c |
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|
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IF( hemisph. EQ. 1 ) THEN |
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|
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IF( ifiltre. EQ. -2 ) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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ENDDO |
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DO k = 1, iim |
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DO i = 1, iim |
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eignq(k) = eignq(k) + matrinvn(k,i,j)*champ(i,j,l) |
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ENDDO |
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ENDDO |
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ELSE IF ( griscal ) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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ENDDO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matriceun(k,i,j)*champ(i,j,l) |
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ENDDO |
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ENDDO |
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ELSE |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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ENDDO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matricevn(k,i,j)*champ(i,j,l) |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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ELSE |
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|
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IF( ifiltre. EQ. -2 ) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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ENDDO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matrinvs(k,i,j-jfiltsu+1)*champ(i,j,l) |
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ENDDO |
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ENDDO |
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ELSE IF ( griscal ) THEN |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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ENDDO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matriceus(k,i,j-jfiltsu+1)*champ(i,j,l) |
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ENDDO |
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ENDDO |
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ELSE |
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DO k = 1, iim |
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eignq(k) = 0.0 |
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ENDDO |
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DO i = 1, iim |
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DO k = 1, iim |
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eignq(k) = eignq(k) + matricevs(k,i,j-jfiltsv+1)*champ(i,j,l) |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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ENDIF |
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c |
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IF( ifiltre.EQ. 2 ) THEN |
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DO 15 i = 1, iim |
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champ( i,j,l ) = ( champ(i,j,l) + eignq(i) ) * sdd2(i) |
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15 CONTINUE |
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ELSE |
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DO 16 i=1,iim |
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champ( i,j,l ) = ( champ(i,j,l) - eignq(i) ) * sdd2(i) |
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16 CONTINUE |
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ENDIF |
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c |
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champ( iip1,j,l ) = champ( 1,j,l ) |
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c |
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30 CONTINUE |
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c |
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50 CONTINUE |
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c |
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100 CONTINUE |
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c |
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1111 FORMAT(//20x,'ERREUR dans le dimensionnement du tableau CHAMP a |
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*filtrer, sur la grille des scalaires'/) |
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2222 FORMAT(//20x,'ERREUR dans le dimensionnement du tableau CHAMP a fi |
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*ltrer, sur la grille de V ou de Z'/) |
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RETURN |
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END |
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