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module fxy_m |
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IMPLICIT NONE |
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private |
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public fxy |
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contains |
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SUBROUTINE fxy(rlatu, yprimu, rlatv, yprimv, rlatu1, yprimu1, rlatu2, & |
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yprimu2, rlonu, xprimu, rlonv, xprimv, rlonm025, xprimm025, rlonp025, & |
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xprimp025) |
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! From dyn3d/fxy.F, v 1.1.1.1 2004/05/19 12:53:06 |
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! Auteur : P. Le Van |
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! Calcul des longitudes et des latitudes pour une fonction f(x, y) |
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! à tangente sinusoïdale et éventuellement avec zoom. |
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|
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USE dimens_m, ONLY : iim, jjm |
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|
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REAL, INTENT (OUT) :: rlatu(jjm + 1), yprimu(jjm + 1), rlatv(jjm) |
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REAL, INTENT (OUT) :: yprimv(jjm) |
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REAL, INTENT (OUT) :: rlatu1(jjm) |
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REAL, INTENT (OUT) :: yprimu1(jjm), rlatu2(jjm), yprimu2(jjm) |
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REAL, INTENT (OUT) :: rlonu(iim + 1), xprimu(iim + 1), rlonv(iim + 1) |
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REAL, INTENT (OUT) :: xprimv(iim + 1) |
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REAL, INTENT (OUT) :: rlonm025(iim + 1), xprimm025(iim + 1) |
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REAL, INTENT (OUT) :: rlonp025(iim + 1) |
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REAL, INTENT (OUT) :: xprimp025(iim + 1) |
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|
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! Variables local to the procedure: |
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|
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INTEGER i, j |
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|
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!------------------------------------------------------------ |
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|
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! Calcul des latitudes et de y' |
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|
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DO j = 1, jjm + 1 |
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rlatu(j) = fy(real(j)) |
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yprimu(j) = fyprim(real(j)) |
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END DO |
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|
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DO j = 1, jjm |
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rlatv(j) = fy(real(j) + 0.5) |
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rlatu1(j) = fy(real(j) + 0.25) |
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rlatu2(j) = fy(real(j) + 0.75) |
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|
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yprimv(j) = fyprim(real(j) + 0.5) |
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yprimu1(j) = fyprim(real(j) + 0.25) |
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yprimu2(j) = fyprim(real(j) + 0.75) |
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END DO |
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|
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! Calcul des longitudes et de x' |
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|
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DO i = 1, iim + 1 |
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rlonv(i) = fx(real(i)) |
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rlonu(i) = fx(real(i) + 0.5) |
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rlonm025(i) = fx(real(i) - 0.25) |
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rlonp025(i) = fx(real(i) + 0.25) |
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|
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xprimv(i) = fxprim(real(i)) |
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xprimu(i) = fxprim(real(i) + 0.5) |
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xprimm025(i) = fxprim(real(i) - 0.25) |
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xprimp025(i) = fxprim(real(i) + 0.25) |
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END DO |
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|
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END SUBROUTINE fxy |
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|
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!****************************************************** |
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|
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! From grid/fxy_new.h, v 1.1.1.1 2004/05/19 12:53:05 |
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|
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REAL FUNCTION ripx(ri) |
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! stretching in x |
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|
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USE nr_util, ONLY : pi |
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USE dimens_m, ONLY : iim |
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REAL, INTENT (IN) :: ri |
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ripx = (ri - 1.) * 2 * pi / REAL(iim) |
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|
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end function ripx |
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|
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!****************************************************** |
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|
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REAL FUNCTION fx(ri) |
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|
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! stretching in x |
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USE nr_util, ONLY : pi |
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USE serre, ONLY : alphax, pxo, transx |
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REAL, INTENT (IN) :: ri |
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|
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fx = ripx(ri) + transx + alphax * SIN(ripx(ri) + transx - pxo) - pi |
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end function fx |
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|
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!****************************************************** |
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|
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REAL FUNCTION fxprim(ri) |
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! stretching in x |
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USE nr_util, ONLY : pi |
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USE serre, ONLY : alphax, pxo, transx |
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USE dimens_m, ONLY : iim |
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REAL, INTENT (IN) :: ri |
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fxprim = 2 * pi / REAL(iim) * (1. + alphax * COS(ripx(ri) + transx - pxo)) |
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end function fxprim |
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|
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!****************************************************** |
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|
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REAL FUNCTION bigy(rj) |
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|
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! stretching in y |
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USE nr_util, ONLY : pi |
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USE dimens_m, ONLY : jjm |
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REAL, INTENT (IN) :: rj |
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|
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bigy = 2 * (REAL(jjm + 1) - rj) * pi / jjm |
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|
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end function bigy |
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|
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!****************************************************** |
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|
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REAL FUNCTION fy(rj) |
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! stretching in y |
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USE nr_util, ONLY : pi |
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USE serre, ONLY : alphay, pyo, transy |
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REAL, INTENT (IN) :: rj |
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fy = (bigy(rj) + transy + alphay * SIN(bigy(rj) + transy - pyo)) / 2 & |
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- pi / 2 |
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end function fy |
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!****************************************************** |
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|
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REAL FUNCTION fyprim(rj) |
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! stretching in y |
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USE nr_util, ONLY : pi |
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USE serre, ONLY : alphay, pyo, transy |
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USE dimens_m, ONLY : jjm |
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REAL, INTENT (IN) :: rj |
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fyprim = (pi / jjm) * (1. + alphay * COS(bigy(rj) + transy - pyo)) |
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end function fyprim |
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end module fxy_m |
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