1 |
! |
module inifilr_m |
|
! $Header: /home/cvsroot/LMDZ4/libf/filtrez/inifilr.F,v 1.1.1.1 2004/05/19 12:53:09 lmdzadmin Exp $ |
|
|
! |
|
|
SUBROUTINE inifilr |
|
|
c |
|
|
c ... H. Upadhyaya, O.Sharma ... |
|
|
c |
|
|
use dimens_m |
|
|
use paramet_m |
|
|
use logic |
|
|
use comgeom |
|
|
use serre |
|
|
use parafilt |
|
|
IMPLICIT NONE |
|
|
c |
|
|
c version 3 ..... |
|
|
|
|
|
c Correction le 28/10/97 P. Le Van . |
|
|
c ------------------------------------------------------------------- |
|
|
c ------------------------------------------------------------------- |
|
|
include "coefils.h" |
|
|
|
|
|
REAL dlonu(iim),dlatu(jjm) |
|
|
REAL rlamda( iim ), eignvl( iim ) |
|
|
c |
|
|
|
|
|
REAL lamdamax,pi,cof |
|
|
INTEGER i,j,modemax,imx,k,kf,ii |
|
|
REAL dymin,dxmin,colat0 |
|
|
REAL eignft(iim,iim), coff |
|
|
REAL matriceun,matriceus,matricevn,matricevs,matrinvn,matrinvs |
|
|
COMMON/matrfil/matriceun(iim,iim,nfilun),matriceus(iim,iim,nfilus) |
|
|
, , matricevn(iim,iim,nfilvn),matricevs(iim,iim,nfilvs) |
|
|
, , matrinvn(iim,iim,nfilun),matrinvs (iim,iim,nfilus) |
|
|
EXTERNAL inifgn |
|
|
c |
|
|
c ------------------------------------------------------------ |
|
|
c This routine computes the eigenfunctions of the laplacien |
|
|
c on the stretched grid, and the filtering coefficients |
|
|
c |
|
|
c We designate: |
|
|
c eignfn eigenfunctions of the discrete laplacien |
|
|
c eigenvl eigenvalues |
|
|
c jfiltn indexof the last scalar line filtered in NH |
|
|
c jfilts index of the first line filtered in SH |
|
|
c modfrst index of the mode from where modes are filtered |
|
|
c modemax maximum number of modes ( im ) |
|
|
c coefil filtering coefficients ( lamda_max*cos(rlat)/lamda ) |
|
|
c sdd SQRT( dx ) |
|
|
c |
|
|
c the modes are filtered from modfrst to modemax |
|
|
c |
|
|
c----------------------------------------------------------- |
|
|
c |
|
|
|
|
|
pi = 2. * ASIN( 1. ) |
|
|
|
|
|
DO i = 1,iim |
|
|
dlonu(i) = xprimu( i ) |
|
|
ENDDO |
|
|
c |
|
|
CALL inifgn(eignvl) |
|
|
c |
|
|
print *,' EIGNVL ' |
|
|
PRINT 250,eignvl |
|
|
250 FORMAT( 1x,5e13.6) |
|
|
c |
|
|
c compute eigenvalues and eigenfunctions |
|
|
c |
|
|
c |
|
|
c................................................................. |
|
|
c |
|
|
c compute the filtering coefficients for scalar lines and |
|
|
c meridional wind v-lines |
|
|
c |
|
|
c we filter all those latitude lines where coefil < 1 |
|
|
c NO FILTERING AT POLES |
|
|
c |
|
|
c colat0 is to be used when alpha (stretching coefficient) |
|
|
c is set equal to zero for the regular grid case |
|
|
c |
|
|
c ....... Calcul de colat0 ......... |
|
|
c ..... colat0 = minimum de ( 0.5, min dy/ min dx ) ... |
|
|
c |
|
|
c |
|
|
DO 45 j = 1,jjm |
|
|
dlatu( j ) = rlatu( j ) - rlatu( j+1 ) |
|
|
45 CONTINUE |
|
|
c |
|
|
dxmin = dlonu(1) |
|
|
DO i = 2, iim |
|
|
dxmin = MIN( dxmin,dlonu(i) ) |
|
|
ENDDO |
|
|
dymin = dlatu(1) |
|
|
DO j = 2, jjm |
|
|
dymin = MIN( dymin,dlatu(j) ) |
|
|
ENDDO |
|
|
c |
|
|
c |
|
|
colat0 = MIN( 0.5, dymin/dxmin ) |
|
|
c |
|
|
IF( .NOT.fxyhypb.AND.ysinus ) THEN |
|
|
colat0 = 0.6 |
|
|
c ...... a revoir pour ysinus ! ....... |
|
|
alphax = 0. |
|
|
ENDIF |
|
|
c |
|
|
PRINT 50, colat0,alphax |
|
|
50 FORMAT(/15x,' Inifilr colat0 alphax ',2e16.7) |
|
|
c |
|
|
IF(alphax.EQ.1. ) THEN |
|
|
PRINT *,' Inifilr alphax doit etre < a 1. Corriger ' |
|
|
STOP 1 |
|
|
ENDIF |
|
|
c |
|
|
lamdamax = iim / ( pi * colat0 * ( 1. - alphax ) ) |
|
|
|
|
|
cc ... Correction le 28/10/97 ( P.Le Van ) .. |
|
|
c |
|
|
DO 71 i = 2,iim |
|
|
rlamda( i ) = lamdamax/ SQRT( ABS( eignvl(i) ) ) |
|
|
71 CONTINUE |
|
|
c |
|
|
|
|
|
DO 72 j = 1,jjm |
|
|
DO 73 i = 1,iim |
|
|
coefilu( i,j ) = 0.0 |
|
|
coefilv( i,j ) = 0.0 |
|
|
coefilu2( i,j ) = 0.0 |
|
|
coefilv2( i,j ) = 0.0 |
|
|
73 CONTINUE |
|
|
72 CONTINUE |
|
|
|
|
|
c |
|
|
c ... Determination de jfiltnu,jfiltnv,jfiltsu,jfiltsv .... |
|
|
c ......................................................... |
|
|
c |
|
|
modemax = iim |
|
|
|
|
|
cccc imx = modemax - 4 * (modemax/iim) |
|
|
|
|
|
imx = iim |
|
|
c |
|
|
PRINT *,' TRUNCATION AT ',imx |
|
|
c |
|
|
DO 75 j = 2, jjm/2+1 |
|
|
cof = COS( rlatu(j) )/ colat0 |
|
|
IF ( cof .LT. 1. ) THEN |
|
|
IF( rlamda(imx) * COS(rlatu(j) ).LT.1. ) jfiltnu= j |
|
|
ENDIF |
|
|
|
|
|
cof = COS( rlatu(jjp1-j+1) )/ colat0 |
|
|
IF ( cof .LT. 1. ) THEN |
|
|
IF( rlamda(imx) * COS(rlatu(jjp1-j+1) ).LT.1. ) |
|
|
$ jfiltsu= jjp1-j+1 |
|
|
ENDIF |
|
|
75 CONTINUE |
|
|
c |
|
|
DO 76 j = 1, jjm/2 |
|
|
cof = COS( rlatv(j) )/ colat0 |
|
|
IF ( cof .LT. 1. ) THEN |
|
|
IF( rlamda(imx) * COS(rlatv(j) ).LT.1. ) jfiltnv= j |
|
|
ENDIF |
|
|
|
|
|
cof = COS( rlatv(jjm-j+1) )/ colat0 |
|
|
IF ( cof .LT. 1. ) THEN |
|
|
IF( rlamda(imx) * COS(rlatv(jjm-j+1) ).LT.1. ) |
|
|
$ jfiltsv= jjm-j+1 |
|
|
ENDIF |
|
|
76 CONTINUE |
|
|
c |
|
|
|
|
|
if ( jfiltnu.LE.0 ) jfiltnu=1 |
|
|
IF( jfiltnu.GT. jjm/2 +1 ) THEN |
|
|
PRINT *,' jfiltnu en dehors des valeurs acceptables ' ,jfiltnu |
|
|
STOP 1 |
|
|
ENDIF |
|
|
|
|
|
IF( jfiltsu.LE.0) jfiltsu=1 |
|
|
IF( jfiltsu.GT. jjm +1 ) THEN |
|
|
PRINT *,' jfiltsu en dehors des valeurs acceptables ' ,jfiltsu |
|
|
STOP 1 |
|
|
ENDIF |
|
|
|
|
|
IF( jfiltnv.LE.0) jfiltnv=1 |
|
|
IF( jfiltnv.GT. jjm/2 ) THEN |
|
|
PRINT *,' jfiltnv en dehors des valeurs acceptables ' ,jfiltnv |
|
|
STOP 1 |
|
|
ENDIF |
|
|
|
|
|
IF( jfiltsv.LE.0) jfiltsv=1 |
|
|
IF( jfiltsv.GT. jjm ) THEN |
|
|
PRINT *,' jfiltsv en dehors des valeurs acceptables ' ,jfiltsv |
|
|
STOP 1 |
|
|
ENDIF |
|
|
|
|
|
PRINT *,' jfiltnv jfiltsv jfiltnu jfiltsu ' , |
|
|
* jfiltnv,jfiltsv,jfiltnu,jfiltsu |
|
|
|
|
|
c |
|
|
c ... Determination de coefilu,coefilv,n=modfrstu,modfrstv .... |
|
|
c................................................................ |
|
|
c |
|
|
c |
|
|
DO 77 j = 1,jjm |
|
|
modfrstu( j ) = iim |
|
|
modfrstv( j ) = iim |
|
|
77 CONTINUE |
|
|
c |
|
|
DO 84 j = 2,jfiltnu |
|
|
DO 81 k = 2,modemax |
|
|
cof = rlamda(k) * COS( rlatu(j) ) |
|
|
IF ( cof .LT. 1. ) GOTO 82 |
|
|
81 CONTINUE |
|
|
GOTO 84 |
|
|
82 modfrstu( j ) = k |
|
|
c |
|
|
kf = modfrstu( j ) |
|
|
DO 83 k = kf , modemax |
|
|
cof = rlamda(k) * COS( rlatu(j) ) |
|
|
coefilu(k,j) = cof - 1. |
|
|
coefilu2(k,j) = cof*cof - 1. |
|
|
83 CONTINUE |
|
|
84 CONTINUE |
|
|
c |
|
|
c |
|
|
DO 89 j = 1,jfiltnv |
|
|
c |
|
|
DO 86 k = 2,modemax |
|
|
cof = rlamda(k) * COS( rlatv(j) ) |
|
|
IF ( cof .LT. 1. ) GOTO 87 |
|
|
86 CONTINUE |
|
|
GOTO 89 |
|
|
87 modfrstv( j ) = k |
|
|
c |
|
|
kf = modfrstv( j ) |
|
|
DO 88 k = kf , modemax |
|
|
cof = rlamda(k) * COS( rlatv(j) ) |
|
|
coefilv(k,j) = cof - 1. |
|
|
coefilv2(k,j) = cof*cof - 1. |
|
|
88 CONTINUE |
|
|
c |
|
|
89 CONTINUE |
|
|
c |
|
|
DO 94 j = jfiltsu,jjm |
|
|
DO 91 k = 2,modemax |
|
|
cof = rlamda(k) * COS( rlatu(j) ) |
|
|
IF ( cof .LT. 1. ) GOTO 92 |
|
|
91 CONTINUE |
|
|
GOTO 94 |
|
|
92 modfrstu( j ) = k |
|
|
c |
|
|
kf = modfrstu( j ) |
|
|
DO 93 k = kf , modemax |
|
|
cof = rlamda(k) * COS( rlatu(j) ) |
|
|
coefilu(k,j) = cof - 1. |
|
|
coefilu2(k,j) = cof*cof - 1. |
|
|
93 CONTINUE |
|
|
94 CONTINUE |
|
|
c |
|
|
DO 99 j = jfiltsv,jjm |
|
|
DO 96 k = 2,modemax |
|
|
cof = rlamda(k) * COS( rlatv(j) ) |
|
|
IF ( cof .LT. 1. ) GOTO 97 |
|
|
96 CONTINUE |
|
|
GOTO 99 |
|
|
97 modfrstv( j ) = k |
|
|
c |
|
|
kf = modfrstv( j ) |
|
|
DO 98 k = kf , modemax |
|
|
cof = rlamda(k) * COS( rlatv(j) ) |
|
|
coefilv(k,j) = cof - 1. |
|
|
coefilv2(k,j) = cof*cof - 1. |
|
|
98 CONTINUE |
|
|
99 CONTINUE |
|
|
c |
|
|
|
|
|
IF(jfiltnv.GE.jjm/2 .OR. jfiltnu.GE.jjm/2)THEN |
|
|
|
|
|
IF(jfiltnv.EQ.jfiltsv)jfiltsv=1+jfiltnv |
|
|
IF(jfiltnu.EQ.jfiltsu)jfiltsu=1+jfiltnu |
|
|
|
|
|
PRINT *,'jfiltnv jfiltsv jfiltnu jfiltsu' , |
|
|
* jfiltnv,jfiltsv,jfiltnu,jfiltsu |
|
|
ENDIF |
|
|
|
|
|
PRINT *,' Modes premiers v ' |
|
|
PRINT 334,modfrstv |
|
|
PRINT *,' Modes premiers u ' |
|
|
PRINT 334,modfrstu |
|
|
|
|
|
|
|
|
IF( nfilun.LT. jfiltnu ) THEN |
|
|
PRINT *,' le parametre nfilun utilise pour la matrice ', |
|
|
* ' matriceun est trop petit ! ' |
|
|
PRINT *,'Le changer dans parafilt.h et le mettre a ',jfiltnu |
|
|
PRINT *,' Pour information, nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
STOP 1 |
|
|
ENDIF |
|
|
IF( nfilun.GT. jfiltnu+ 2 ) THEN |
|
|
PRINT *,' le parametre nfilun utilise pour la matrice ', |
|
|
*' matriceun est trop grand ! Gachis de memoire ! ' |
|
|
PRINT *,'Le changer dans parafilt.h et le mettre a ',jfiltnu |
|
|
PRINT *,' Pour information, nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
c STOP 1 |
|
|
ENDIF |
|
|
IF( nfilus.LT. jjm - jfiltsu +1 ) THEN |
|
|
PRINT *,' le parametre nfilus utilise pour la matrice ', |
|
|
* ' matriceus est trop petit ! ' |
|
|
PRINT *,' Le changer dans parafilt.h et le mettre a ', |
|
|
* jjm - jfiltsu + 1 |
|
|
PRINT *,' Pour information , nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
STOP 1 |
|
|
ENDIF |
|
|
IF( nfilus.GT. jjm - jfiltsu + 3 ) THEN |
|
|
PRINT *,' le parametre nfilus utilise pour la matrice ', |
|
|
* ' matriceus est trop grand ! ' |
|
|
PRINT *,' Le changer dans parafilt.h et le mettre a ' , |
|
|
* jjm - jfiltsu + 1 |
|
|
PRINT *,' Pour information , nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
c STOP 1 |
|
|
ENDIF |
|
|
IF( nfilvn.LT. jfiltnv ) THEN |
|
|
PRINT *,' le parametre nfilvn utilise pour la matrice ', |
|
|
* ' matricevn est trop petit ! ' |
|
|
PRINT *,'Le changer dans parafilt.h et le mettre a ',jfiltnv |
|
|
PRINT *,' Pour information , nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
STOP 1 |
|
|
ENDIF |
|
|
IF( nfilvn.GT. jfiltnv+ 2 ) THEN |
|
|
PRINT *,' le parametre nfilvn utilise pour la matrice ', |
|
|
*' matricevn est trop grand ! Gachis de memoire ! ' |
|
|
PRINT *,'Le changer dans parafilt.h et le mettre a ',jfiltnv |
|
|
PRINT *,' Pour information , nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
c STOP 1 |
|
|
ENDIF |
|
|
IF( nfilvs.LT. jjm - jfiltsv +1 ) THEN |
|
|
PRINT *,' le parametre nfilvs utilise pour la matrice ', |
|
|
* ' matricevs est trop petit ! Le changer dans parafilt.h ' |
|
|
PRINT *,' Le changer dans parafilt.h et le mettre a ' |
|
|
* , jjm - jfiltsv + 1 |
|
|
PRINT *,' Pour information , nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
STOP 1 |
|
|
ENDIF |
|
|
IF( nfilvs.GT. jjm - jfiltsv + 3 ) THEN |
|
|
PRINT *,' le parametre nfilvs utilise pour la matrice ', |
|
|
* ' matricevs est trop grand ! Gachis de memoire ! ' |
|
|
PRINT *,' Le changer dans parafilt.h et le mettre a ' |
|
|
* , jjm - jfiltsv + 1 |
|
|
PRINT *,' Pour information , nfilun,nfilus,nfilvn,nfilvs ' |
|
|
* ,'doivent etre egaux successivement a ',jfiltnu,jjm-jfiltsu+1 |
|
|
* ,jfiltnv,jjm-jfiltsv+1 |
|
|
c STOP 1 |
|
|
ENDIF |
|
|
|
|
|
c |
|
|
c ................................................................... |
|
|
c |
|
|
c ... Calcul de la matrice filtre 'matriceu' pour les champs situes |
|
|
c sur la grille scalaire ........ |
|
|
c ................................................................... |
|
|
c |
|
|
DO j = 2, jfiltnu |
|
|
|
|
|
DO i=1,iim |
|
|
coff = coefilu(i,j) |
|
|
IF( i.LT.modfrstu(j) ) coff = 0. |
|
|
DO k=1,iim |
|
|
eignft(i,k) = eignfnv(k,i) * coff |
|
|
ENDDO |
|
|
ENDDO |
|
|
DO k = 1, iim |
|
|
DO i = 1, iim |
|
|
matriceun(i,k,j) = 0.0 |
|
|
DO ii = 1, iim |
|
|
matriceun(i,k,j) = matriceun(i,k,j) |
|
|
. + eignfnv(i,ii)*eignft(ii,k) |
|
|
ENDDO |
|
|
ENDDO |
|
|
ENDDO |
|
|
|
|
|
ENDDO |
|
|
|
|
|
DO j = jfiltsu, jjm |
|
|
|
|
|
DO i=1,iim |
|
|
coff = coefilu(i,j) |
|
|
IF( i.LT.modfrstu(j) ) coff = 0. |
|
|
DO k=1,iim |
|
|
eignft(i,k) = eignfnv(k,i) * coff |
|
|
ENDDO |
|
|
ENDDO |
|
|
DO k = 1, iim |
|
|
DO i = 1, iim |
|
|
matriceus(i,k,j-jfiltsu+1) = 0.0 |
|
|
DO ii = 1, iim |
|
|
matriceus(i,k,j-jfiltsu+1) = matriceus(i,k,j-jfiltsu+1) |
|
|
. + eignfnv(i,ii)*eignft(ii,k) |
|
|
ENDDO |
|
|
ENDDO |
|
|
ENDDO |
|
|
|
|
|
ENDDO |
|
|
|
|
|
c ................................................................... |
|
|
c |
|
|
c ... Calcul de la matrice filtre 'matricev' pour les champs situes |
|
|
c sur la grille de V ou de Z ........ |
|
|
c ................................................................... |
|
|
c |
|
|
DO j = 1, jfiltnv |
|
|
|
|
|
DO i = 1, iim |
|
|
coff = coefilv(i,j) |
|
|
IF( i.LT.modfrstv(j) ) coff = 0. |
|
|
DO k = 1, iim |
|
|
eignft(i,k) = eignfnu(k,i) * coff |
|
|
ENDDO |
|
|
ENDDO |
|
|
DO k = 1, iim |
|
|
DO i = 1, iim |
|
|
matricevn(i,k,j) = 0.0 |
|
|
DO ii = 1, iim |
|
|
matricevn(i,k,j) = matricevn(i,k,j) |
|
|
. + eignfnu(i,ii)*eignft(ii,k) |
|
|
ENDDO |
|
|
ENDDO |
|
|
ENDDO |
|
|
|
|
|
ENDDO |
|
|
|
|
|
DO j = jfiltsv, jjm |
|
|
|
|
|
DO i = 1, iim |
|
|
coff = coefilv(i,j) |
|
|
IF( i.LT.modfrstv(j) ) coff = 0. |
|
|
DO k = 1, iim |
|
|
eignft(i,k) = eignfnu(k,i) * coff |
|
|
ENDDO |
|
|
ENDDO |
|
|
DO k = 1, iim |
|
|
DO i = 1, iim |
|
|
matricevs(i,k,j-jfiltsv+1) = 0.0 |
|
|
DO ii = 1, iim |
|
|
matricevs(i,k,j-jfiltsv+1) = matricevs(i,k,j-jfiltsv+1) |
|
|
. + eignfnu(i,ii)*eignft(ii,k) |
|
|
ENDDO |
|
|
ENDDO |
|
|
ENDDO |
|
|
|
|
|
ENDDO |
|
|
|
|
|
c ................................................................... |
|
|
c |
|
|
c ... Calcul de la matrice filtre 'matrinv' pour les champs situes |
|
|
c sur la grille scalaire , pour le filtre inverse ........ |
|
|
c ................................................................... |
|
|
c |
|
|
DO j = 2, jfiltnu |
|
|
|
|
|
DO i = 1,iim |
|
|
coff = coefilu(i,j)/ ( 1. + coefilu(i,j) ) |
|
|
IF( i.LT.modfrstu(j) ) coff = 0. |
|
|
DO k=1,iim |
|
|
eignft(i,k) = eignfnv(k,i) * coff |
|
|
ENDDO |
|
|
ENDDO |
|
|
DO k = 1, iim |
|
|
DO i = 1, iim |
|
|
matrinvn(i,k,j) = 0.0 |
|
|
DO ii = 1, iim |
|
|
matrinvn(i,k,j) = matrinvn(i,k,j) |
|
|
. + eignfnv(i,ii)*eignft(ii,k) |
|
|
ENDDO |
|
|
ENDDO |
|
|
ENDDO |
|
|
|
|
|
ENDDO |
|
|
|
|
|
DO j = jfiltsu, jjm |
|
|
|
|
|
DO i = 1,iim |
|
|
coff = coefilu(i,j) / ( 1. + coefilu(i,j) ) |
|
|
IF( i.LT.modfrstu(j) ) coff = 0. |
|
|
DO k=1,iim |
|
|
eignft(i,k) = eignfnv(k,i) * coff |
|
|
ENDDO |
|
|
ENDDO |
|
|
DO k = 1, iim |
|
|
DO i = 1, iim |
|
|
matrinvs(i,k,j-jfiltsu+1) = 0.0 |
|
|
DO ii = 1, iim |
|
|
matrinvs(i,k,j-jfiltsu+1) = matrinvs(i,k,j-jfiltsu+1) |
|
|
. + eignfnv(i,ii)*eignft(ii,k) |
|
|
ENDDO |
|
|
ENDDO |
|
|
ENDDO |
|
|
|
|
|
ENDDO |
|
|
|
|
|
c ................................................................... |
|
|
|
|
|
c |
|
|
334 FORMAT(1x,24i3) |
|
|
755 FORMAT(1x,6f10.3,i3) |
|
2 |
|
|
3 |
RETURN |
IMPLICIT NONE |
4 |
END |
|
5 |
|
! North: |
6 |
|
|
7 |
|
INTEGER jfiltnu, jfiltnv |
8 |
|
! index of the last scalar line filtered in northern hemisphere |
9 |
|
|
10 |
|
real, allocatable:: matriceun(:, :, :), matrinvn(:, :, :) |
11 |
|
! (iim, iim, 2:jfiltnu) |
12 |
|
|
13 |
|
real, allocatable:: matricevn(:, :, :) ! (iim, iim, jfiltnv) |
14 |
|
|
15 |
|
! South: |
16 |
|
|
17 |
|
integer jfiltsu, jfiltsv |
18 |
|
! index of the first line filtered in southern hemisphere |
19 |
|
|
20 |
|
real, allocatable:: matriceus(:, :, :), matrinvs(:, :, :) |
21 |
|
! (iim, iim, jfiltsu:jjm) |
22 |
|
|
23 |
|
real, allocatable:: matricevs(:, :, :) ! (iim, iim, jfiltsv:jjm) |
24 |
|
|
25 |
|
contains |
26 |
|
|
27 |
|
SUBROUTINE inifilr |
28 |
|
|
29 |
|
! From filtrez/inifilr.F, version 1.1.1.1, 2004/05/19 12:53:09 |
30 |
|
! H. Upadhyaya, O. Sharma |
31 |
|
|
32 |
|
! This procedure computes the filtering coefficients for scalar |
33 |
|
! lines and meridional wind v lines. The modes are filtered from |
34 |
|
! modfrst to iim. We filter all those latitude lines where coefil |
35 |
|
! < 1. No filtering at poles. colat0 is to be used when alpha |
36 |
|
! (stretching coefficient) is set equal to zero for the regular |
37 |
|
! grid case. |
38 |
|
|
39 |
|
USE dimens_m, ONLY : iim, jjm |
40 |
|
USE dynetat0_m, ONLY : rlatu, rlatv, xprimu, grossismx |
41 |
|
use inifgn_m, only: inifgn |
42 |
|
use jumble, only: new_unit |
43 |
|
use nr_util, only: pi |
44 |
|
|
45 |
|
! Local: |
46 |
|
|
47 |
|
REAL dlatu(jjm) |
48 |
|
REAL rlamda(2: iim) |
49 |
|
real eignvl(iim) ! eigenvalues sorted in descending order (<= 0) |
50 |
|
INTEGER i, j, unit |
51 |
|
REAL colat0 ! > 0 |
52 |
|
REAL eignft(iim, iim) |
53 |
|
|
54 |
|
real eignfnu(iim, iim), eignfnv(iim, iim) |
55 |
|
! eigenvectors of the discrete second derivative with respect to longitude |
56 |
|
|
57 |
|
! Filtering coefficients (lamda_max * cos(rlat) / lamda): |
58 |
|
real, allocatable:: coefilnu(:, :) ! (iim, 2:jfiltnu) |
59 |
|
real, allocatable:: coefilsu(:, :) ! (iim, jfiltsu:jjm) |
60 |
|
real, allocatable:: coefilnv(:, :) ! (iim, jfiltnv) |
61 |
|
real, allocatable:: coefilsv(:, :) ! (iim, jfiltsv:jjm) |
62 |
|
|
63 |
|
! Index of the mode from where modes are filtered: |
64 |
|
integer, allocatable:: modfrstnu(:) ! (2:jfiltnu) |
65 |
|
integer, allocatable:: modfrstsu(:) ! (jfiltsu:jjm) |
66 |
|
integer, allocatable:: modfrstnv(:) ! (jfiltnv) |
67 |
|
integer, allocatable:: modfrstsv(:) ! (jfiltsv:jjm) |
68 |
|
|
69 |
|
!----------------------------------------------------------- |
70 |
|
|
71 |
|
print *, "Call sequence information: inifilr" |
72 |
|
|
73 |
|
CALL inifgn(eignvl, eignfnu, eignfnv) |
74 |
|
|
75 |
|
! Calcul de colat0 |
76 |
|
forall (j = 1:jjm) dlatu(j) = rlatu(j) - rlatu(j + 1) |
77 |
|
colat0 = min(0.5, minval(dlatu) / minval(xprimu(:iim))) |
78 |
|
PRINT *, 'colat0 = ', colat0 |
79 |
|
|
80 |
|
rlamda = iim / (pi * colat0 / grossismx) / sqrt(- eignvl(2: iim)) |
81 |
|
|
82 |
|
! Determination de jfiltnu, jfiltsu, jfiltnv, jfiltsv |
83 |
|
|
84 |
|
jfiltnu = (jjm + 1) / 2 |
85 |
|
do while (cos(rlatu(jfiltnu)) >= colat0 & |
86 |
|
.or. rlamda(iim) * cos(rlatu(jfiltnu)) >= 1.) |
87 |
|
jfiltnu = jfiltnu - 1 |
88 |
|
end do |
89 |
|
|
90 |
|
jfiltsu = jjm / 2 + 2 |
91 |
|
do while (cos(rlatu(jfiltsu)) >= colat0 & |
92 |
|
.or. rlamda(iim) * cos(rlatu(jfiltsu)) >= 1.) |
93 |
|
jfiltsu = jfiltsu + 1 |
94 |
|
end do |
95 |
|
|
96 |
|
jfiltnv = jjm / 2 |
97 |
|
do while ((cos(rlatv(jfiltnv)) >= colat0 & |
98 |
|
.or. rlamda(iim) * cos(rlatv(jfiltnv)) >= 1.) .and. jfiltnv >= 2) |
99 |
|
jfiltnv = jfiltnv - 1 |
100 |
|
end do |
101 |
|
|
102 |
|
if (cos(rlatv(jfiltnv)) >= colat0 & |
103 |
|
.or. rlamda(iim) * cos(rlatv(jfiltnv)) >= 1.) then |
104 |
|
! {jfiltnv == 1} |
105 |
|
PRINT *, 'Could not find jfiltnv.' |
106 |
|
STOP 1 |
107 |
|
END IF |
108 |
|
|
109 |
|
jfiltsv = (jjm + 1)/ 2 + 1 |
110 |
|
do while ((cos(rlatv(jfiltsv)) >= colat0 & |
111 |
|
.or. rlamda(iim) * cos(rlatv(jfiltsv)) >= 1.) .and. jfiltsv <= jjm - 1) |
112 |
|
jfiltsv = jfiltsv + 1 |
113 |
|
end do |
114 |
|
|
115 |
|
IF (cos(rlatv(jfiltsv)) >= colat0 & |
116 |
|
.or. rlamda(iim) * cos(rlatv(jfiltsv)) >= 1.) THEN |
117 |
|
! {jfiltsv == jjm} |
118 |
|
PRINT *, 'Could not find jfiltsv.' |
119 |
|
STOP 1 |
120 |
|
END IF |
121 |
|
|
122 |
|
PRINT *, 'jfiltnu =', jfiltnu |
123 |
|
PRINT *, 'jfiltsu =', jfiltsu |
124 |
|
PRINT *, 'jfiltnv =', jfiltnv |
125 |
|
PRINT *, 'jfiltsv =', jfiltsv |
126 |
|
|
127 |
|
! D\'etermination de coefil[ns][uv], modfrst[ns][uv]: |
128 |
|
|
129 |
|
allocate(modfrstnu(2:jfiltnu), modfrstsu(jfiltsu:jjm)) |
130 |
|
allocate(modfrstnv(jfiltnv), modfrstsv(jfiltsv:jjm)) |
131 |
|
allocate(coefilnu(iim, 2:jfiltnu), coefilsu(iim, jfiltsu:jjm)) |
132 |
|
allocate(coefilnv(iim, jfiltnv), coefilsv(iim, jfiltsv:jjm)) |
133 |
|
|
134 |
|
coefilnu = 0. |
135 |
|
coefilnv = 0. |
136 |
|
coefilsu = 0. |
137 |
|
coefilsv = 0. |
138 |
|
|
139 |
|
DO j = 2, jfiltnu |
140 |
|
modfrstnu(j) = 2 |
141 |
|
do while (rlamda(modfrstnu(j)) * cos(rlatu(j)) >= 1. & |
142 |
|
.and. modfrstnu(j) <= iim - 1) |
143 |
|
modfrstnu(j) = modfrstnu(j) + 1 |
144 |
|
end do |
145 |
|
|
146 |
|
if (rlamda(modfrstnu(j)) * cos(rlatu(j)) < 1.) then |
147 |
|
DO i = modfrstnu(j), iim |
148 |
|
coefilnu(i, j) = rlamda(i) * cos(rlatu(j)) - 1. |
149 |
|
end DO |
150 |
|
end if |
151 |
|
END DO |
152 |
|
|
153 |
|
DO j = 1, jfiltnv |
154 |
|
modfrstnv(j) = 2 |
155 |
|
do while (rlamda(modfrstnv(j)) * cos(rlatv(j)) >= 1. & |
156 |
|
.and. modfrstnv(j) <= iim - 1) |
157 |
|
modfrstnv(j) = modfrstnv(j) + 1 |
158 |
|
end do |
159 |
|
|
160 |
|
if (rlamda(modfrstnv(j)) * cos(rlatv(j)) < 1.) then |
161 |
|
DO i = modfrstnv(j), iim |
162 |
|
coefilnv(i, j) = rlamda(i) * cos(rlatv(j)) - 1. |
163 |
|
end DO |
164 |
|
end if |
165 |
|
end DO |
166 |
|
|
167 |
|
DO j = jfiltsu, jjm |
168 |
|
modfrstsu(j) = 2 |
169 |
|
do while (rlamda(modfrstsu(j)) * cos(rlatu(j)) >= 1. & |
170 |
|
.and. modfrstsu(j) <= iim - 1) |
171 |
|
modfrstsu(j) = modfrstsu(j) + 1 |
172 |
|
end do |
173 |
|
|
174 |
|
if (rlamda(modfrstsu(j)) * cos(rlatu(j)) < 1.) then |
175 |
|
DO i = modfrstsu(j), iim |
176 |
|
coefilsu(i, j) = rlamda(i) * cos(rlatu(j)) - 1. |
177 |
|
end DO |
178 |
|
end if |
179 |
|
end DO |
180 |
|
|
181 |
|
DO j = jfiltsv, jjm |
182 |
|
modfrstsv(j) = 2 |
183 |
|
do while (rlamda(modfrstsv(j)) * cos(rlatv(j)) >= 1. & |
184 |
|
.and. modfrstsv(j) <= iim - 1) |
185 |
|
modfrstsv(j) = modfrstsv(j) + 1 |
186 |
|
end do |
187 |
|
|
188 |
|
if (rlamda(modfrstsv(j)) * cos(rlatv(j)) < 1.) then |
189 |
|
DO i = modfrstsv(j), iim |
190 |
|
coefilsv(i, j) = rlamda(i) * cos(rlatv(j)) - 1. |
191 |
|
end DO |
192 |
|
end if |
193 |
|
END DO |
194 |
|
|
195 |
|
call new_unit(unit) |
196 |
|
open(unit, file = "inifilr_out.txt", status = "replace", action = "write") |
197 |
|
write(unit, fmt = *) '"EIGNVL"', eignvl |
198 |
|
write(unit, fmt = *) '"modfrstnu"', modfrstnu |
199 |
|
write(unit, fmt = *) '"modfrstsu"', modfrstsu |
200 |
|
write(unit, fmt = *) '"modfrstnv"', modfrstnv |
201 |
|
write(unit, fmt = *) '"modfrstsv"', modfrstsv |
202 |
|
close(unit) |
203 |
|
|
204 |
|
allocate(matriceun(iim, iim, 2:jfiltnu), matrinvn(iim, iim, 2:jfiltnu)) |
205 |
|
allocate(matricevn(iim, iim, jfiltnv)) |
206 |
|
allocate(matricevs(iim, iim, jfiltsv:jjm)) |
207 |
|
allocate(matriceus(iim, iim, jfiltsu:jjm), matrinvs(iim, iim, jfiltsu:jjm)) |
208 |
|
|
209 |
|
! Calcul de la matrice filtre 'matriceu' pour les champs situes |
210 |
|
! sur la grille scalaire |
211 |
|
|
212 |
|
DO j = 2, jfiltnu |
213 |
|
eignft(:modfrstnu(j) - 1, :) = 0. |
214 |
|
forall (i = modfrstnu(j):iim) eignft(i, :) = eignfnv(:, i) & |
215 |
|
* coefilnu(i, j) |
216 |
|
matriceun(:, :, j) = matmul(eignfnv, eignft) |
217 |
|
END DO |
218 |
|
|
219 |
|
DO j = jfiltsu, jjm |
220 |
|
eignft(:modfrstsu(j) - 1, :) = 0. |
221 |
|
forall (i = modfrstsu(j):iim) eignft(i, :) = eignfnv(:, i) & |
222 |
|
* coefilsu(i, j) |
223 |
|
matriceus(:, :, j) = matmul(eignfnv, eignft) |
224 |
|
END DO |
225 |
|
|
226 |
|
! Calcul de la matrice filtre 'matricev' pour les champs situes |
227 |
|
! sur la grille de V ou de Z |
228 |
|
|
229 |
|
DO j = 1, jfiltnv |
230 |
|
eignft(:modfrstnv(j) - 1, :) = 0. |
231 |
|
forall (i = modfrstnv(j): iim) eignft(i, :) = eignfnu(:, i) & |
232 |
|
* coefilnv(i, j) |
233 |
|
matricevn(:, :, j) = matmul(eignfnu, eignft) |
234 |
|
END DO |
235 |
|
|
236 |
|
DO j = jfiltsv, jjm |
237 |
|
eignft(:modfrstsv(j) - 1, :) = 0. |
238 |
|
forall (i = modfrstsv(j):iim) eignft(i, :) = eignfnu(:, i) & |
239 |
|
* coefilsv(i, j) |
240 |
|
matricevs(:, :, j) = matmul(eignfnu, eignft) |
241 |
|
END DO |
242 |
|
|
243 |
|
! Calcul de la matrice filtre 'matrinv' pour les champs situes |
244 |
|
! sur la grille scalaire , pour le filtre inverse |
245 |
|
|
246 |
|
DO j = 2, jfiltnu |
247 |
|
eignft(:modfrstnu(j) - 1, :) = 0. |
248 |
|
forall (i = modfrstnu(j):iim) eignft(i, :) = eignfnv(:, i) & |
249 |
|
* coefilnu(i, j) / (1. + coefilnu(i, j)) |
250 |
|
matrinvn(:, :, j) = matmul(eignfnv, eignft) |
251 |
|
END DO |
252 |
|
|
253 |
|
DO j = jfiltsu, jjm |
254 |
|
eignft(:modfrstsu(j) - 1, :) = 0. |
255 |
|
forall (i = modfrstsu(j):iim) eignft(i, :) = eignfnv(:, i) & |
256 |
|
* coefilsu(i, j) / (1. + coefilsu(i, j)) |
257 |
|
matrinvs(:, :, j) = matmul(eignfnv, eignft) |
258 |
|
END DO |
259 |
|
|
260 |
|
END SUBROUTINE inifilr |
261 |
|
|
262 |
|
end module inifilr_m |