1 |
module inifilr_m |
module inifilr_m |
2 |
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use dimens_m, only: iim |
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3 |
IMPLICIT NONE |
IMPLICIT NONE |
4 |
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5 |
INTEGER jfiltnu, jfiltsu, jfiltnv, jfiltsv |
! North: |
6 |
INTEGER, PARAMETER:: nfilun=3, nfilus=2, nfilvn=2, nfilvs=2 |
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INTEGER jfiltnu, jfiltnv |
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! index of the last scalar line filtered in northern hemisphere |
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real, pointer:: matriceun(:, :, :) ! (iim, iim, jfiltnu - 1) |
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! matrice filtre pour les champs situes sur la grille scalaire |
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real, pointer:: matrinvn(:, :, :) ! (iim, iim, jfiltnu - 1) |
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! matrice filtre pour les champs situes sur la grille scalaire, pour |
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! le filtre inverse |
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real, pointer:: matricevn(:, :, :) ! (iim, iim, jfiltnv) |
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! matrice filtre pour les champs situes sur la grille de V ou de Z |
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! South: |
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integer jfiltsu, jfiltsv |
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! index of the first line filtered in southern hemisphere |
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real matriceun(iim,iim,nfilun), matriceus(iim,iim,nfilus) |
real, pointer:: matriceus(:, :, :) ! (iim, iim, jjm - jfiltsu + 1) |
26 |
real matricevn(iim,iim,nfilvn), matricevs(iim,iim,nfilvs) |
! matrice filtre pour les champs situes sur la grille scalaire |
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real matrinvn(iim,iim,nfilun), matrinvs(iim,iim,nfilus) |
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private iim, nfilun, nfilus, nfilvn, nfilvs |
real, pointer:: matrinvs(:, :, :) ! (iim, iim, jjm - jfiltsu + 1) |
29 |
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! matrice filtre pour les champs situes sur la grille scalaire, pour |
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! le filtre inverse |
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real, pointer:: matricevs(:, :, :) ! (iim, iim, jjm - jfiltsv + 1) |
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! matrice filtre pour les champs situes sur la grille de V ou de Z |
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contains |
contains |
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SUBROUTINE inifilr |
SUBROUTINE inifilr |
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39 |
! From filtrez/inifilr.F, version 1.1.1.1 2004/05/19 12:53:09 |
! From filtrez/inifilr.F, version 1.1.1.1, 2004/05/19 12:53:09 |
40 |
! H. Upadhyaya, O. Sharma |
! H. Upadhyaya, O. Sharma |
41 |
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42 |
! This routine computes the eigenfunctions of the laplacian on the |
! This procedure computes the filtering coefficients for scalar |
43 |
! stretched grid, and the filtering coefficients. |
! lines and meridional wind v lines. The modes are filtered from |
44 |
! We designate: |
! modfrst to iim. We filter all those latitude lines where coefil |
45 |
! eignfn eigenfunctions of the discrete laplacian |
! < 1. No filtering at poles. colat0 is to be used when alpha |
46 |
! eigenvl eigenvalues |
! (stretching coefficient) is set equal to zero for the regular |
47 |
! jfiltn index of the last scalar line filtered in NH |
! grid case. |
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! jfilts index of the first line filtered in SH |
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! modfrst index of the mode from where modes are filtered |
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! modemax maximum number of modes (im) |
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! coefil filtering coefficients (lamda_max * cos(rlat) / lamda) |
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! sdd SQRT(dx) |
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! The modes are filtered from modfrst to modemax. |
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USE dimens_m, ONLY : iim, jjm |
USE dimens_m, ONLY : iim, jjm |
50 |
use conf_gcm_m, ONLY : fxyhypb, ysinus |
USE dynetat0_m, ONLY : rlatu, rlatv, xprimu, grossismx |
51 |
USE comgeom, ONLY : rlatu, rlatv, xprimu |
use inifgn_m, only: inifgn |
52 |
use nr_util, only: pi |
use inifilr_hemisph_m, only: inifilr_hemisph |
53 |
USE serre, ONLY : alphax |
use jumble, only: new_unit |
54 |
USE coefils, ONLY : coefilu, coefilu2, coefilv, coefilv2, eignfnu, & |
use nr_util, only: pi, ifirstloc |
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eignfnv, modfrstu, modfrstv |
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56 |
! Local: |
! Local: |
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REAL dlonu(iim), dlatu(jjm) |
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REAL rlamda(2: iim), eignvl(iim) |
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58 |
REAL lamdamax, cof |
REAL dlatu(jjm) |
59 |
INTEGER i, j, modemax, imx, k, kf |
REAL rlamda(2:iim) ! > 0, in descending order |
60 |
REAL dymin, dxmin, colat0 |
real eignvl(iim) ! eigenvalues sorted in descending order (<= 0) |
61 |
REAL eignft(iim, iim), coff |
INTEGER j, unit |
62 |
EXTERNAL inifgn |
REAL colat0 ! > 0 |
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integer j1 ! index of smallest positive latitude |
64 |
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real eignfnu(iim, iim), eignfnv(iim, iim) |
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! eigenvectors of the discrete second derivative with respect to longitude |
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68 |
!----------------------------------------------------------- |
!----------------------------------------------------------- |
69 |
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70 |
print *, "Call sequence information: inifilr" |
print *, "Call sequence information: inifilr" |
71 |
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72 |
DO i = 1, iim |
CALL inifgn(eignvl, eignfnu, eignfnv) |
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dlonu(i) = xprimu(i) |
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END DO |
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CALL inifgn(eignvl) |
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PRINT *, 'EIGNVL ' |
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PRINT "(1X, 5E13.6)", eignvl |
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! compute eigenvalues and eigenfunctions |
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! compute the filtering coefficients for scalar lines and |
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! meridional wind v-lines |
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! we filter all those latitude lines where coefil < 1 |
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! NO FILTERING AT POLES |
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! colat0 is to be used when alpha (stretching coefficient) |
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! is set equal to zero for the regular grid case |
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! Calcul de colat0 |
! Calcul de colat0 |
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forall (j = 1:jjm) dlatu(j) = rlatu(j) - rlatu(j + 1) |
76 |
DO j = 1, jjm |
colat0 = min(0.5, minval(dlatu) / minval(xprimu(:iim))) |
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dlatu(j) = rlatu(j) - rlatu(j+1) |
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END DO |
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dxmin = dlonu(1) |
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DO i = 2, iim |
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dxmin = min(dxmin, dlonu(i)) |
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END DO |
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dymin = dlatu(1) |
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DO j = 2, jjm |
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dymin = min(dymin, dlatu(j)) |
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END DO |
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colat0 = min(0.5, dymin/dxmin) |
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IF (.NOT. fxyhypb .AND. ysinus) THEN |
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colat0 = 0.6 |
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! À revoir pour ysinus |
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alphax = 0. |
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END IF |
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77 |
PRINT *, 'colat0 = ', colat0 |
PRINT *, 'colat0 = ', colat0 |
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PRINT *, 'alphax = ', alphax |
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IF (alphax == 1.) THEN |
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PRINT *, 'alphax doit etre < a 1. Corriger ' |
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STOP 1 |
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END IF |
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lamdamax = iim / (pi * colat0 * (1. - alphax)) |
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rlamda = lamdamax / sqrt(abs(eignvl(2: iim))) |
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DO j = 1, jjm |
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DO i = 1, iim |
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coefilu(i, j) = 0. |
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coefilv(i, j) = 0. |
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coefilu2(i, j) = 0. |
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coefilv2(i, j) = 0. |
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end DO |
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END DO |
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! Determination de jfiltnu, jfiltnv, jfiltsu, jfiltsv |
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modemax = iim |
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imx = iim |
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PRINT *, 'TRUNCATION AT ', imx |
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DO j = 2, jjm / 2 + 1 |
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IF (cos(rlatu(j)) / colat0 < 1. & |
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.and. rlamda(imx) * cos(rlatu(j)) < 1.) jfiltnu = j |
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IF (cos(rlatu(jjm - j + 2)) / colat0 < 1. & |
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.and. rlamda(imx) * cos(rlatu(jjm - j + 2)) < 1.) & |
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jfiltsu = jjm - j + 2 |
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END DO |
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DO j = 1, jjm/2 |
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cof = cos(rlatv(j))/colat0 |
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IF (cof < 1.) THEN |
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IF (rlamda(imx)*cos(rlatv(j)) < 1.) jfiltnv = j |
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END IF |
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cof = cos(rlatv(jjm-j+1))/colat0 |
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IF (cof < 1.) THEN |
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IF (rlamda(imx)*cos(rlatv(jjm-j+1)) < 1.) jfiltsv = jjm - j + 1 |
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END IF |
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END DO |
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IF (jfiltnu <= 0) jfiltnu = 1 |
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IF (jfiltnu > jjm/2+1) THEN |
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PRINT *, 'jfiltnu en dehors des valeurs acceptables ', jfiltnu |
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STOP 1 |
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END IF |
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IF (jfiltsu <= 0) jfiltsu = 1 |
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IF (jfiltsu > jjm + 1) THEN |
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PRINT *, 'jfiltsu en dehors des valeurs acceptables ', jfiltsu |
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STOP 1 |
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END IF |
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IF (jfiltnv <= 0) jfiltnv = 1 |
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IF (jfiltnv > jjm/2) THEN |
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PRINT *, 'jfiltnv en dehors des valeurs acceptables ', jfiltnv |
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STOP 1 |
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END IF |
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IF (jfiltsv <= 0) jfiltsv = 1 |
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IF (jfiltsv > jjm) THEN |
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PRINT *, 'jfiltsv en dehors des valeurs acceptables ', jfiltsv |
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STOP 1 |
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END IF |
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PRINT *, 'jfiltnv jfiltsv jfiltnu jfiltsu ', jfiltnv, jfiltsv, jfiltnu, & |
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jfiltsu |
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! Determination de coefilu, coefilv, n=modfrstu, modfrstv |
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DO j = 1, jjm |
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modfrstu(j) = iim |
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modfrstv(j) = iim |
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END DO |
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DO j = 2, jfiltnu |
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DO k = 2, modemax |
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cof = rlamda(k) * cos(rlatu(j)) |
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IF (cof < 1.) exit |
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end DO |
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if (k == modemax + 1) cycle |
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modfrstu(j) = k |
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kf = modfrstu(j) |
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DO k = kf, modemax |
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cof = rlamda(k)*cos(rlatu(j)) |
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coefilu(k, j) = cof - 1. |
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coefilu2(k, j) = cof*cof - 1. |
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end DO |
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END DO |
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DO j = 1, jfiltnv |
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DO k = 2, modemax |
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cof = rlamda(k)*cos(rlatv(j)) |
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IF (cof < 1.) exit |
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end DO |
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if (k == modemax + 1) cycle |
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modfrstv(j) = k |
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kf = modfrstv(j) |
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DO k = kf, modemax |
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cof = rlamda(k)*cos(rlatv(j)) |
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coefilv(k, j) = cof - 1. |
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coefilv2(k, j) = cof*cof - 1. |
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end DO |
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end DO |
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DO j = jfiltsu, jjm |
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DO k = 2, modemax |
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cof = rlamda(k)*cos(rlatu(j)) |
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IF (cof < 1.) exit |
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end DO |
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if (k == modemax + 1) cycle |
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modfrstu(j) = k |
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kf = modfrstu(j) |
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DO k = kf, modemax |
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cof = rlamda(k)*cos(rlatu(j)) |
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coefilu(k, j) = cof - 1. |
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coefilu2(k, j) = cof*cof - 1. |
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end DO |
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end DO |
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DO j = jfiltsv, jjm |
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DO k = 2, modemax |
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cof = rlamda(k)*cos(rlatv(j)) |
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IF (cof < 1.) exit |
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end DO |
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if (k == modemax + 1) cycle |
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modfrstv(j) = k |
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kf = modfrstv(j) |
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DO k = kf, modemax |
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cof = rlamda(k)*cos(rlatv(j)) |
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coefilv(k, j) = cof - 1. |
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coefilv2(k, j) = cof*cof - 1. |
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end DO |
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END DO |
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IF (jfiltnv>=jjm/2 .OR. jfiltnu>=jjm/2) THEN |
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IF (jfiltnv == jfiltsv) jfiltsv = 1 + jfiltnv |
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IF (jfiltnu == jfiltsu) jfiltsu = 1 + jfiltnu |
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PRINT *, 'jfiltnv jfiltsv jfiltnu jfiltsu', jfiltnv, jfiltsv, jfiltnu, & |
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jfiltsu |
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END IF |
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PRINT *, 'Modes premiers v ' |
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PRINT 334, modfrstv |
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PRINT *, 'Modes premiers u ' |
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PRINT 334, modfrstu |
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IF (nfilun < jfiltnu) THEN |
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PRINT *, 'le parametre nfilun utilise pour la matrice ', & |
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'matriceun est trop petit ! ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', jfiltnu |
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PRINT *, 'Pour information, nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', jfiltnu, & |
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jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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STOP 1 |
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END IF |
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IF (nfilun > jfiltnu+2) THEN |
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PRINT *, 'le parametre nfilun utilise pour la matrice ', & |
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'matriceun est trop grand ! Gachis de memoire ! ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', jfiltnu |
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PRINT *, 'Pour information, nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', & |
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jfiltnu, jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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END IF |
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IF (nfilus < jjm-jfiltsu+1) THEN |
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PRINT *, 'le parametre nfilus utilise pour la matrice ', & |
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'matriceus est trop petit ! ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', & |
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jjm - jfiltsu + 1 |
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PRINT *, 'Pour information , nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', & |
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jfiltnu, jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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STOP 1 |
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END IF |
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IF (nfilus > jjm-jfiltsu+3) THEN |
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PRINT *, 'le parametre nfilus utilise pour la matrice ', & |
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'matriceus est trop grand ! ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', & |
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jjm - jfiltsu + 1 |
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PRINT *, 'Pour information , nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', & |
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jfiltnu, jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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END IF |
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IF (nfilvn < jfiltnv) THEN |
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PRINT *, 'le parametre nfilvn utilise pour la matrice ', & |
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'matricevn est trop petit ! ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', jfiltnv |
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PRINT *, 'Pour information , nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', & |
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jfiltnu, jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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STOP 1 |
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END IF |
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IF (nfilvn > jfiltnv+2) THEN |
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PRINT *, 'le parametre nfilvn utilise pour la matrice ', & |
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'matricevn est trop grand ! Gachis de memoire ! ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', jfiltnv |
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PRINT *, 'Pour information , nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', & |
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jfiltnu, jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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END IF |
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IF (nfilvs < jjm-jfiltsv+1) THEN |
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PRINT *, 'le parametre nfilvs utilise pour la matrice ', & |
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'matricevs est trop petit ! Le changer dans parafilt.h ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', & |
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jjm - jfiltsv + 1 |
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PRINT *, 'Pour information , nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', & |
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jfiltnu, jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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STOP 1 |
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END IF |
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IF (nfilvs > jjm-jfiltsv+3) THEN |
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PRINT *, 'le parametre nfilvs utilise pour la matrice ', & |
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'matricevs est trop grand ! Gachis de memoire ! ' |
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PRINT *, 'Le changer dans parafilt.h et le mettre a ', & |
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jjm - jfiltsv + 1 |
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PRINT *, 'Pour information , nfilun, nfilus, nfilvn, nfilvs ', & |
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'doivent etre egaux successivement a ', & |
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jfiltnu, jjm - jfiltsu + 1, jfiltnv, jjm - jfiltsv + 1 |
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END IF |
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! Calcul de la matrice filtre 'matriceu' pour les champs situes |
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! sur la grille scalaire |
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DO j = 2, jfiltnu |
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DO i = 1, iim |
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IF (i < modfrstu(j)) then |
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coff = 0. |
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else |
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coff = coefilu(i, j) |
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end IF |
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eignft(i, :) = eignfnv(:, i)*coff |
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END DO |
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matriceun(:, :, j) = matmul(eignfnv, eignft) |
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END DO |
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DO j = jfiltsu, jjm |
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DO i = 1, iim |
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IF (i < modfrstu(j)) then |
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coff = 0. |
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else |
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coff = coefilu(i, j) |
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end IF |
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eignft(i, :) = eignfnv(:, i) * coff |
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END DO |
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matriceus(:, :, j - jfiltsu + 1) = matmul(eignfnv, eignft) |
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END DO |
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! Calcul de la matrice filtre 'matricev' pour les champs situes |
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! sur la grille de V ou de Z |
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DO j = 1, jfiltnv |
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DO i = 1, iim |
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IF (i < modfrstv(j)) then |
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coff = 0. |
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else |
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coff = coefilv(i, j) |
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end IF |
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eignft(i, :) = eignfnu(:, i)*coff |
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END DO |
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matricevn(:, :, j) = matmul(eignfnu, eignft) |
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END DO |
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DO j = jfiltsv, jjm |
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DO i = 1, iim |
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IF (i < modfrstv(j)) then |
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coff = 0. |
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else |
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coff = coefilv(i, j) |
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|
end IF |
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eignft(i, :) = eignfnu(:, i)*coff |
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END DO |
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matricevs(:, :, j-jfiltsv+1) = matmul(eignfnu, eignft) |
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END DO |
|
|
|
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! Calcul de la matrice filtre 'matrinv' pour les champs situes |
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! sur la grille scalaire , pour le filtre inverse |
|
|
|
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DO j = 2, jfiltnu |
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DO i = 1, iim |
|
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IF (i < modfrstu(j)) then |
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coff = 0. |
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else |
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coff = coefilu(i, j)/(1.+coefilu(i, j)) |
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end IF |
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eignft(i, :) = eignfnv(:, i)*coff |
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END DO |
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matrinvn(:, :, j) = matmul(eignfnv, eignft) |
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|
END DO |
|
|
|
|
|
DO j = jfiltsu, jjm |
|
|
DO i = 1, iim |
|
|
IF (i < modfrstu(j)) then |
|
|
coff = 0. |
|
|
else |
|
|
coff = coefilu(i, j)/(1.+coefilu(i, j)) |
|
|
end IF |
|
|
eignft(i, :) = eignfnv(:, i)*coff |
|
|
END DO |
|
|
matrinvs(:, :, j-jfiltsu+1) = matmul(eignfnv, eignft) |
|
|
END DO |
|
78 |
|
|
79 |
334 FORMAT (1X, 24I3) |
rlamda = iim / (pi * colat0 / grossismx) / sqrt(- eignvl(2: iim)) |
80 |
|
call new_unit(unit) |
81 |
|
open(unit, file = "inifilr_out.txt", status = "replace", action = "write") |
82 |
|
write(unit, fmt = *) '"EIGNVL"', eignvl |
83 |
|
close(unit) |
84 |
|
open(unit, file = "modfrst.csv", status = "replace", action = "write") |
85 |
|
write(unit, fmt = *) '"rlat (degrees)" modfrst' ! title line |
86 |
|
|
87 |
|
! D\'etermination de jfilt[ns][uv] : |
88 |
|
|
89 |
|
j1 = jjm + 1 - ifirstloc(rlatu(jjm:1:- 1) >= 0.) |
90 |
|
|
91 |
|
call inifilr_hemisph(rlatu(j1:2:- 1), colat0, rlamda, unit, eignfnv, & |
92 |
|
jfiltnu, matriceun, matrinvn) |
93 |
|
jfiltnu = j1 + 1 - jfiltnu |
94 |
|
matriceun = matriceun(:, :, jfiltnu - 1:1:- 1) |
95 |
|
matrinvn = matrinvn(:, :, jfiltnu - 1:1:- 1) |
96 |
|
|
97 |
|
call inifilr_hemisph(- rlatu(j1 + 1:jjm), colat0, rlamda, unit, eignfnv, & |
98 |
|
jfiltsu, matriceus, matrinvs) |
99 |
|
jfiltsu = j1 + jfiltsu |
100 |
|
|
101 |
|
j1 = jjm + 1 - ifirstloc(rlatv(jjm:1:- 1) >= 0.) |
102 |
|
|
103 |
|
call inifilr_hemisph(rlatv(j1:1:- 1), colat0, rlamda, unit, eignfnu, & |
104 |
|
jfiltnv, matricevn) |
105 |
|
jfiltnv = j1 + 1 - jfiltnv |
106 |
|
matricevn = matricevn(:, :, jfiltnv:1:- 1) |
107 |
|
|
108 |
|
call inifilr_hemisph(- rlatv(j1 + 1:jjm), colat0, rlamda, unit, eignfnu, & |
109 |
|
jfiltsv, matricevs) |
110 |
|
jfiltsv = j1 + jfiltsv |
111 |
|
|
112 |
|
close(unit) |
113 |
|
PRINT *, 'jfiltnu =', jfiltnu |
114 |
|
PRINT *, 'jfiltsu =', jfiltsu |
115 |
|
PRINT *, 'jfiltnv =', jfiltnv |
116 |
|
PRINT *, 'jfiltsv =', jfiltsv |
117 |
|
|
118 |
END SUBROUTINE inifilr |
END SUBROUTINE inifilr |
119 |
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|