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module filtreg_m |
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IMPLICIT NONE |
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|
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contains |
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SUBROUTINE filtreg(champ, direct, intensive) |
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! From filtrez/filtreg.F, version 1.1.1.1, 2004/05/19 12:53:09 |
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! Author: P. Le Van |
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! Objet : filtre matriciel longitudinal, avec les matrices pr\'ecalcul\'ees |
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! pour l'op\'erateur filtre. |
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|
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USE coefils, ONLY: sddu, sddv, unsddu, unsddv |
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USE dimens_m, ONLY: iim, jjm |
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use filtreg_hemisph_m, only: filtreg_hemisph |
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use inifilr_m, only: jfiltnu, jfiltnv, jfiltsu, jfiltsv, matriceun, & |
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matriceus, matricevn, matricevs, matrinvn, matrinvs |
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use nr_util, only: assert |
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|
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REAL, intent(inout):: champ(:, :, :) ! (iim + 1, nlat, :) |
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! en entr\'ee : champ \`a filtrer, en sortie : champ filtr\'e |
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|
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logical, intent(in):: direct ! filtre direct ou inverse |
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|
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logical, intent(in):: intensive |
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! champ intensif ou extensif (pond\'er\'e par les aires) |
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|
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! Local: |
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INTEGER nlat ! nombre de latitudes \`a filtrer |
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REAL sdd1(iim), sdd2(iim) |
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|
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!----------------------------------------------------------- |
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|
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call assert(size(champ, 1) == iim + 1, "filtreg iim + 1") |
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nlat = size(champ, 2) |
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call assert(nlat == jjm .or. nlat == jjm + 1, "filtreg nlat") |
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|
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if (nlat == jjm + 1) then |
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IF (intensive) THEN |
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sdd1 = sddv |
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sdd2 = unsddv |
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ELSE |
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sdd1 = unsddv |
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sdd2 = sddv |
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END IF |
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if (direct) then |
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call filtreg_hemisph(champ(:, 2:jfiltnu, :), sdd1, sdd2, matriceun) |
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call filtreg_hemisph(champ(:, jfiltsu:jjm, :), sdd1, sdd2, matriceus) |
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else |
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call filtreg_hemisph(champ(:, 2:jfiltnu, :), sdd1, sdd2, - matrinvn) |
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call filtreg_hemisph(champ(:, jfiltsu:jjm, :), sdd1, sdd2, - matrinvs) |
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end if |
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else |
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IF (intensive) THEN |
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sdd1 = sddu |
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sdd2 = unsddu |
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ELSE |
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sdd1 = unsddu |
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sdd2 = sddu |
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END IF |
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if (direct) then |
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call filtreg_hemisph(champ(:, :jfiltnv, :), sdd1, sdd2, matricevn) |
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call filtreg_hemisph(champ(:, jfiltsv:jjm, :), sdd1, sdd2, matricevs) |
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else |
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PRINT *, 'filtreg: inverse filter on scalar grid only' |
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STOP 1 |
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END IF |
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end if |
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|
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END SUBROUTINE filtreg |
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|
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end module filtreg_m |
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