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guez |
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module grid_atob |
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! From grid_atob.F,v 1.1.1.1 2004/05/19 12:53:05 |
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IMPLICIT none |
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contains |
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guez |
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function grille_m(xdata, ydata, entree, x, y) |
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guez |
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!======================================================================= |
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! Z. X. Li (le 1 avril 1994) (voir aussi A. Harzallah et L. Fairhead) |
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! Méthode naïve pour transformer un champ d'une grille fine à une |
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! grille grossière. Je considère que les nouveaux points occupent |
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! une zone adjacente qui comprend un ou plusieurs anciens points |
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! Aucune pondération n'est considérée (voir grille_p) |
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! (c) |
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! ----d----- |
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! | . . . .| |
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! | | |
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! (b)a . * . .b(a) |
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! | | |
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! | . . . .| |
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! ----c----- |
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! (d) |
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!======================================================================= |
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! INPUT: |
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! imdep, jmdep: dimensions X et Y pour depart |
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! xdata, ydata: coordonnees X et Y pour depart |
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! entree: champ d'entree a transformer |
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! OUTPUT: |
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! imar, jmar: dimensions X et Y d'arrivee |
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! x, y: coordonnees X et Y d'arrivee |
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! grille_m: champ de sortie deja transforme |
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!======================================================================= |
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guez |
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use numer_rec, only: assert_eq |
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guez |
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REAL, intent(in):: xdata(:),ydata(:) |
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REAL, intent(in):: entree(:, :) |
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REAL, intent(in):: x(:), y(:) |
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guez |
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real grille_m(size(x), size(y)) |
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guez |
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! Variables local to the procedure: |
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INTEGER imdep, jmdep, imar, jmar |
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INTEGER i, j, ii, jj |
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REAL a(2200),b(2200),c(1100),d(1100) |
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REAL number(2200,1100) |
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REAL distans(2200*1100) |
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INTEGER i_proche, j_proche, ij_proche |
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REAL zzmin |
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!------------------------- |
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print *, "Call sequence information: grille_m" |
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imdep = assert_eq(size(xdata), size(entree, 1), "grille_m") |
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jmdep = assert_eq(size(ydata), size(entree, 2), "grille_m") |
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imar = size(x) |
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jmar = size(y) |
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IF (imar.GT.2200 .OR. jmar.GT.1100) THEN |
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PRINT*, 'imar ou jmar trop grand', imar, jmar |
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STOP 1 |
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ENDIF |
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! Calculer les limites des zones des nouveaux points |
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a(1) = x(1) - (x(2)-x(1))/2.0 |
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b(1) = (x(1)+x(2))/2.0 |
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DO i = 2, imar-1 |
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a(i) = b(i-1) |
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b(i) = (x(i)+x(i+1))/2.0 |
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ENDDO |
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a(imar) = b(imar-1) |
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b(imar) = x(imar) + (x(imar)-x(imar-1))/2.0 |
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c(1) = y(1) - (y(2)-y(1))/2.0 |
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d(1) = (y(1)+y(2))/2.0 |
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DO j = 2, jmar-1 |
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c(j) = d(j-1) |
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d(j) = (y(j)+y(j+1))/2.0 |
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ENDDO |
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c(jmar) = d(jmar-1) |
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d(jmar) = y(jmar) + (y(jmar)-y(jmar-1))/2.0 |
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DO i = 1, imar |
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DO j = 1, jmar |
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number(i,j) = 0.0 |
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grille_m(i,j) = 0.0 |
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ENDDO |
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ENDDO |
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! Determiner la zone sur laquelle chaque ancien point se trouve |
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DO ii = 1, imar |
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DO jj = 1, jmar |
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DO i = 1, imdep |
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IF( ( xdata(i)-a(ii) >= 1.e-5.AND.xdata(i)-b(ii) <= 1.e-5 ).OR. & |
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(xdata(i)-a(ii) <= 1.e-5.AND.xdata(i)-b(ii) >= 1.e-5 ) ) & |
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THEN |
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DO j = 1, jmdep |
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IF((ydata(j)-c(jj) >= 1.e-5.AND.ydata(j)-d(jj) <= 1.e-5 ) & |
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.OR. (ydata(j)-c(jj) <= 1.e-5 .AND. & |
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ydata(j)-d(jj) >= 1.e-5)) THEN |
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number(ii,jj) = number(ii,jj) + 1.0 |
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grille_m(ii,jj) = grille_m(ii,jj) + entree(i,j) |
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ENDIF |
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ENDDO |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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! Si aucun ancien point ne tombe sur une zone, c'est un probleme |
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DO i = 1, imar |
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DO j = 1, jmar |
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IF (number(i,j) .GT. 0.001) THEN |
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grille_m(i,j) = grille_m(i,j) / number(i,j) |
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ELSE |
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PRINT*, 'probleme,i,j=', i,j |
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CALL dist_sphe(x(i),y(j),xdata,ydata,imdep,jmdep,distans) |
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ij_proche = 1 |
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zzmin = distans(ij_proche) |
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DO ii = 2, imdep*jmdep |
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IF (distans(ii).LT.zzmin) THEN |
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zzmin = distans(ii) |
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ij_proche = ii |
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ENDIF |
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ENDDO |
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j_proche = (ij_proche-1)/imdep + 1 |
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i_proche = ij_proche - (j_proche-1)*imdep |
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PRINT*, "solution:", ij_proche, i_proche, j_proche |
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grille_m(i,j) = entree(i_proche,j_proche) |
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ENDIF |
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ENDDO |
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ENDDO |
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END function grille_m |
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SUBROUTINE grille_p(imdep, jmdep, xdata, ydata, entree, & |
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imar, jmar, x, y, sortie) |
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!======================================================================= |
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! z.x.li (le 1 avril 1994) (voir aussi A. Harzallah et L. Fairhead) |
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! Methode naive pour transformer un champ d'une grille fine a une |
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! grille grossiere. Je considere que les nouveaux points occupent |
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! une zone adjacente qui comprend un ou plusieurs anciens points |
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! Consideration de la distance des points (voir grille_m) |
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! (c) |
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! ----d----- |
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! | . . . .| |
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! | | |
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! (b)a . * . .b(a) |
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! | | |
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! | . . . .| |
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! ----c----- |
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! (d) |
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!======================================================================= |
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! INPUT: |
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! imdep, jmdep: dimensions X et Y pour depart |
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! xdata, ydata: coordonnees X et Y pour depart |
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! entree: champ d'entree a transformer |
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! OUTPUT: |
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! imar, jmar: dimensions X et Y d'arrivee |
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! x, y: coordonnees X et Y d'arrivee |
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! sortie: champ de sortie deja transforme |
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!======================================================================= |
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INTEGER imdep, jmdep |
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REAL xdata(imdep),ydata(jmdep) |
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REAL entree(imdep,jmdep) |
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INTEGER imar, jmar |
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REAL x(imar),y(jmar) |
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REAL sortie(imar,jmar) |
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INTEGER i, j, ii, jj |
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REAL a(400),b(400),c(200),d(200) |
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REAL number(400,200) |
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INTEGER indx(400,200), indy(400,200) |
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REAL dist(400,200), distsom(400,200) |
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IF (imar.GT.400 .OR. jmar.GT.200) THEN |
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PRINT*, 'imar ou jmar trop grand', imar, jmar |
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STOP 1 |
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ENDIF |
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IF (imdep.GT.400 .OR. jmdep.GT.200) THEN |
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PRINT*, 'imdep ou jmdep trop grand', imdep, jmdep |
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STOP 1 |
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ENDIF |
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! calculer les bords a et b de la nouvelle grille |
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a(1) = x(1) - (x(2)-x(1))/2.0 |
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b(1) = (x(1)+x(2))/2.0 |
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DO i = 2, imar-1 |
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a(i) = b(i-1) |
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b(i) = (x(i)+x(i+1))/2.0 |
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ENDDO |
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a(imar) = b(imar-1) |
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b(imar) = x(imar) + (x(imar)-x(imar-1))/2.0 |
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! calculer les bords c et d de la nouvelle grille |
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c(1) = y(1) - (y(2)-y(1))/2.0 |
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d(1) = (y(1)+y(2))/2.0 |
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DO j = 2, jmar-1 |
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c(j) = d(j-1) |
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d(j) = (y(j)+y(j+1))/2.0 |
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ENDDO |
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c(jmar) = d(jmar-1) |
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d(jmar) = y(jmar) + (y(jmar)-y(jmar-1))/2.0 |
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! trouver les indices (indx,indy) de la nouvelle grille sur laquelle |
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! un point de l'ancienne grille est tombe. |
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! ..... Modif P. Le Van ( 23/08/95 ) .... |
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DO ii = 1, imar |
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DO jj = 1, jmar |
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DO i = 1, imdep |
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IF( ( xdata(i)-a(ii) >= 1.e-5.AND.xdata(i)-b(ii) <= 1.e-5 ).OR. & |
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( xdata(i)-a(ii) <= 1.e-5.AND.xdata(i)-b(ii) >= 1.e-5 ) ) & |
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THEN |
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DO j = 1, jmdep |
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IF( (ydata(j)-c(jj) >= 1.e-5.AND.ydata(j)-d(jj) <= 1.e-5 ).OR. & |
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( ydata(j)-c(jj) <= 1.e-5.AND.ydata(j)-d(jj) >= 1.e-5 ) ) & |
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THEN |
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indx(i,j) = ii |
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indy(i,j) = jj |
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ENDIF |
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ENDDO |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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! faire une verification |
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DO i = 1, imdep |
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DO j = 1, jmdep |
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IF (indx(i,j).GT.imar .OR. indy(i,j).GT.jmar) THEN |
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PRINT*, 'Probleme grave,i,j,indx,indy=', & |
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i,j,indx(i,j),indy(i,j) |
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stop 1 |
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ENDIF |
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ENDDO |
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ENDDO |
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! calculer la distance des anciens points avec le nouveau point, |
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! on prend ensuite une sorte d'inverse pour ponderation. |
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DO i = 1, imar |
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DO j = 1, jmar |
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number(i,j) = 0.0 |
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distsom(i,j) = 0.0 |
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ENDDO |
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ENDDO |
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DO i = 1, imdep |
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DO j = 1, jmdep |
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dist(i,j) = SQRT ( (xdata(i)-x(indx(i,j)))**2 & |
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+(ydata(j)-y(indy(i,j)))**2 ) |
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distsom(indx(i,j),indy(i,j)) = distsom(indx(i,j),indy(i,j)) & |
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+ dist(i,j) |
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number(indx(i,j),indy(i,j)) = number(indx(i,j),indy(i,j)) +1. |
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ENDDO |
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ENDDO |
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DO i = 1, imdep |
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DO j = 1, jmdep |
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dist(i,j) = 1.0 - dist(i,j)/distsom(indx(i,j),indy(i,j)) |
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ENDDO |
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ENDDO |
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DO i = 1, imar |
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DO j = 1, jmar |
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number(i,j) = 0.0 |
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sortie(i,j) = 0.0 |
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ENDDO |
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ENDDO |
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DO i = 1, imdep |
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DO j = 1, jmdep |
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sortie(indx(i,j),indy(i,j)) = sortie(indx(i,j),indy(i,j)) & |
| 292 |
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+ entree(i,j) * dist(i,j) |
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number(indx(i,j),indy(i,j)) = number(indx(i,j),indy(i,j)) & |
| 294 |
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+ dist(i,j) |
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ENDDO |
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ENDDO |
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DO i = 1, imar |
| 298 |
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DO j = 1, jmar |
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IF (number(i,j) .GT. 0.001) THEN |
| 300 |
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sortie(i,j) = sortie(i,j) / number(i,j) |
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ELSE |
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PRINT*, 'probleme,i,j=', i,j |
| 303 |
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STOP 1 |
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ENDIF |
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ENDDO |
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ENDDO |
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RETURN |
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END SUBROUTINE grille_p |
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!****************************************************************** |
| 312 |
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| 313 |
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SUBROUTINE mask_c_o(imdep, jmdep, xdata, ydata, relief, & |
| 314 |
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imar, jmar, x, y, mask) |
| 315 |
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!======================================================================= |
| 316 |
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! z.x.li (le 1 avril 1994): A partir du champ de relief, on fabrique |
| 317 |
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! un champ indicateur (masque) terre/ocean |
| 318 |
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! terre:1; ocean:0 |
| 319 |
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| 320 |
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! Methode naive (voir grille_m) |
| 321 |
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!======================================================================= |
| 322 |
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| 323 |
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INTEGER imdep, jmdep |
| 324 |
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REAL xdata(imdep),ydata(jmdep) |
| 325 |
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REAL relief(imdep,jmdep) |
| 326 |
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| 327 |
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INTEGER imar, jmar |
| 328 |
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REAL x(imar),y(jmar) |
| 329 |
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REAL mask(imar,jmar) |
| 330 |
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| 331 |
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INTEGER i, j, ii, jj |
| 332 |
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REAL a(2200),b(2200),c(1100),d(1100) |
| 333 |
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REAL num_tot(2200,1100), num_oce(2200,1100) |
| 334 |
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| 335 |
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IF (imar.GT.2200 .OR. jmar.GT.1100) THEN |
| 336 |
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PRINT*, 'imar ou jmar trop grand', imar, jmar |
| 337 |
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STOP 1 |
| 338 |
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ENDIF |
| 339 |
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| 340 |
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a(1) = x(1) - (x(2)-x(1))/2.0 |
| 341 |
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b(1) = (x(1)+x(2))/2.0 |
| 342 |
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DO i = 2, imar-1 |
| 343 |
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a(i) = b(i-1) |
| 344 |
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|
b(i) = (x(i)+x(i+1))/2.0 |
| 345 |
|
|
ENDDO |
| 346 |
|
|
a(imar) = b(imar-1) |
| 347 |
|
|
b(imar) = x(imar) + (x(imar)-x(imar-1))/2.0 |
| 348 |
|
|
|
| 349 |
|
|
c(1) = y(1) - (y(2)-y(1))/2.0 |
| 350 |
|
|
d(1) = (y(1)+y(2))/2.0 |
| 351 |
|
|
DO j = 2, jmar-1 |
| 352 |
|
|
c(j) = d(j-1) |
| 353 |
|
|
d(j) = (y(j)+y(j+1))/2.0 |
| 354 |
|
|
ENDDO |
| 355 |
|
|
c(jmar) = d(jmar-1) |
| 356 |
|
|
d(jmar) = y(jmar) + (y(jmar)-y(jmar-1))/2.0 |
| 357 |
|
|
|
| 358 |
|
|
DO i = 1, imar |
| 359 |
|
|
DO j = 1, jmar |
| 360 |
|
|
num_oce(i,j) = 0.0 |
| 361 |
|
|
num_tot(i,j) = 0.0 |
| 362 |
|
|
ENDDO |
| 363 |
|
|
ENDDO |
| 364 |
|
|
|
| 365 |
|
|
! ..... Modif P. Le Van ( 23/08/95 ) .... |
| 366 |
|
|
|
| 367 |
|
|
DO ii = 1, imar |
| 368 |
|
|
DO jj = 1, jmar |
| 369 |
|
|
DO i = 1, imdep |
| 370 |
|
|
IF( ( xdata(i)-a(ii) >= 1.e-5.AND.xdata(i)-b(ii) <= 1.e-5 ).OR. & |
| 371 |
|
|
( xdata(i)-a(ii) <= 1.e-5.AND.xdata(i)-b(ii) >= 1.e-5 ) ) & |
| 372 |
|
|
THEN |
| 373 |
|
|
DO j = 1, jmdep |
| 374 |
|
|
IF( (ydata(j)-c(jj) >= 1.e-5.AND.ydata(j)-d(jj) <= 1.e-5 ).OR. & |
| 375 |
|
|
( ydata(j)-c(jj) <= 1.e-5.AND.ydata(j)-d(jj) >= 1.e-5 ) ) & |
| 376 |
|
|
THEN |
| 377 |
|
|
num_tot(ii,jj) = num_tot(ii,jj) + 1.0 |
| 378 |
|
|
IF (.NOT. ( relief(i,j) - 0.9>= 1.e-5 ) ) & |
| 379 |
|
|
num_oce(ii,jj) = num_oce(ii,jj) + 1.0 |
| 380 |
|
|
ENDIF |
| 381 |
|
|
ENDDO |
| 382 |
|
|
ENDIF |
| 383 |
|
|
ENDDO |
| 384 |
|
|
ENDDO |
| 385 |
|
|
ENDDO |
| 386 |
|
|
|
| 387 |
|
|
DO i = 1, imar |
| 388 |
|
|
DO j = 1, jmar |
| 389 |
|
|
IF (num_tot(i,j) .GT. 0.001) THEN |
| 390 |
|
|
IF ( num_oce(i,j)/num_tot(i,j) - 0.5 >= 1.e-5 ) THEN |
| 391 |
|
|
mask(i,j) = 0. |
| 392 |
|
|
ELSE |
| 393 |
|
|
mask(i,j) = 1. |
| 394 |
|
|
ENDIF |
| 395 |
|
|
ELSE |
| 396 |
|
|
PRINT*, 'probleme,i,j=', i,j |
| 397 |
|
|
STOP 1 |
| 398 |
|
|
ENDIF |
| 399 |
|
|
ENDDO |
| 400 |
|
|
ENDDO |
| 401 |
|
|
|
| 402 |
|
|
RETURN |
| 403 |
|
|
END SUBROUTINE mask_c_o |
| 404 |
|
|
|
| 405 |
|
|
! ************************************* |
| 406 |
|
|
|
| 407 |
|
|
real function rugosite(xdata, ydata, entree, x, y, mask) |
| 408 |
|
|
|
| 409 |
|
|
! Z. X. Li (le 1 avril 1994): Transformer la longueur de rugosite d'une |
| 410 |
|
|
! grille fine a une grille grossiere. Sur l'ocean, on impose une valeur |
| 411 |
|
|
! fixe (0.001m). |
| 412 |
|
|
|
| 413 |
|
|
! Methode naive (voir grille_m) |
| 414 |
|
|
|
| 415 |
guez |
13 |
use numer_rec, only: assert_eq |
| 416 |
guez |
3 |
|
| 417 |
|
|
REAL, intent(in):: xdata(:), ydata(:), entree(:,:), x(:), y(:), mask(:,:) |
| 418 |
|
|
|
| 419 |
|
|
dimension rugosite(size(mask, 1), size(mask, 2)) |
| 420 |
|
|
|
| 421 |
|
|
! Variables local to the procedure: |
| 422 |
|
|
INTEGER imdep, jmdep |
| 423 |
|
|
INTEGER imar, jmar |
| 424 |
|
|
INTEGER i, j, ii, jj |
| 425 |
|
|
REAL a(400),b(400),c(400),d(400) |
| 426 |
|
|
REAL num_tot(400,400) |
| 427 |
|
|
REAL distans(400*400) |
| 428 |
|
|
INTEGER i_proche, j_proche, ij_proche |
| 429 |
|
|
REAL zzmin |
| 430 |
|
|
|
| 431 |
|
|
! -------------------- |
| 432 |
|
|
|
| 433 |
|
|
imdep = assert_eq(size(xdata), size(entree, 1), "rugosite") |
| 434 |
|
|
jmdep = assert_eq(size(ydata), size(entree, 2), "rugosite") |
| 435 |
|
|
imar = assert_eq(size(x), size(mask, 1), "rugosite") |
| 436 |
|
|
jmar = assert_eq(size(y), size(mask, 2), "rugosite") |
| 437 |
|
|
|
| 438 |
|
|
IF (imar.GT.400 .OR. jmar.GT.400) THEN |
| 439 |
|
|
PRINT*, 'imar ou jmar trop grand', imar, jmar |
| 440 |
|
|
STOP 1 |
| 441 |
|
|
ENDIF |
| 442 |
|
|
|
| 443 |
|
|
a(1) = x(1) - (x(2)-x(1))/2.0 |
| 444 |
|
|
b(1) = (x(1)+x(2))/2.0 |
| 445 |
|
|
DO i = 2, imar-1 |
| 446 |
|
|
a(i) = b(i-1) |
| 447 |
|
|
b(i) = (x(i)+x(i+1))/2.0 |
| 448 |
|
|
ENDDO |
| 449 |
|
|
a(imar) = b(imar-1) |
| 450 |
|
|
b(imar) = x(imar) + (x(imar)-x(imar-1))/2.0 |
| 451 |
|
|
|
| 452 |
|
|
c(1) = y(1) - (y(2)-y(1))/2.0 |
| 453 |
|
|
d(1) = (y(1)+y(2))/2.0 |
| 454 |
|
|
DO j = 2, jmar-1 |
| 455 |
|
|
c(j) = d(j-1) |
| 456 |
|
|
d(j) = (y(j)+y(j+1))/2.0 |
| 457 |
|
|
ENDDO |
| 458 |
|
|
c(jmar) = d(jmar-1) |
| 459 |
|
|
d(jmar) = y(jmar) + (y(jmar)-y(jmar-1))/2.0 |
| 460 |
|
|
|
| 461 |
|
|
DO i = 1, imar |
| 462 |
|
|
DO j = 1, jmar |
| 463 |
|
|
num_tot(i,j) = 0.0 |
| 464 |
|
|
rugosite(i,j) = 0.0 |
| 465 |
|
|
ENDDO |
| 466 |
|
|
ENDDO |
| 467 |
|
|
|
| 468 |
|
|
! ..... Modif P. Le Van ( 23/08/95 ) .... |
| 469 |
|
|
|
| 470 |
|
|
DO ii = 1, imar |
| 471 |
|
|
DO jj = 1, jmar |
| 472 |
|
|
DO i = 1, imdep |
| 473 |
|
|
IF( ( xdata(i)-a(ii) >= 1.e-5.AND.xdata(i)-b(ii) <= 1.e-5 ).OR. & |
| 474 |
|
|
( xdata(i)-a(ii) <= 1.e-5.AND.xdata(i)-b(ii) >= 1.e-5 ) ) & |
| 475 |
|
|
THEN |
| 476 |
|
|
DO j = 1, jmdep |
| 477 |
|
|
IF( (ydata(j)-c(jj) >= 1.e-5.AND.ydata(j)-d(jj) <= 1.e-5 ).OR. & |
| 478 |
|
|
( ydata(j)-c(jj) <= 1.e-5.AND.ydata(j)-d(jj) >= 1.e-5 ) ) & |
| 479 |
|
|
THEN |
| 480 |
|
|
rugosite(ii,jj) = rugosite(ii,jj) + LOG(entree(i,j)) |
| 481 |
|
|
num_tot(ii,jj) = num_tot(ii,jj) + 1.0 |
| 482 |
|
|
ENDIF |
| 483 |
|
|
ENDDO |
| 484 |
|
|
ENDIF |
| 485 |
|
|
ENDDO |
| 486 |
|
|
ENDDO |
| 487 |
|
|
ENDDO |
| 488 |
|
|
|
| 489 |
|
|
DO i = 1, imar |
| 490 |
|
|
DO j = 1, jmar |
| 491 |
|
|
IF (NINT(mask(i,j)).EQ.1) THEN |
| 492 |
|
|
IF (num_tot(i,j) .GT. 0.0) THEN |
| 493 |
|
|
rugosite(i,j) = rugosite(i,j) / num_tot(i,j) |
| 494 |
|
|
rugosite(i,j) = EXP(rugosite(i,j)) |
| 495 |
|
|
ELSE |
| 496 |
|
|
PRINT*, 'probleme,i,j=', i,j |
| 497 |
|
|
!cc STOP 1 |
| 498 |
|
|
CALL dist_sphe(x(i),y(j),xdata,ydata,imdep,jmdep,distans) |
| 499 |
|
|
ij_proche = 1 |
| 500 |
|
|
zzmin = distans(ij_proche) |
| 501 |
|
|
DO ii = 2, imdep*jmdep |
| 502 |
|
|
IF (distans(ii).LT.zzmin) THEN |
| 503 |
|
|
zzmin = distans(ii) |
| 504 |
|
|
ij_proche = ii |
| 505 |
|
|
ENDIF |
| 506 |
|
|
ENDDO |
| 507 |
|
|
j_proche = (ij_proche-1)/imdep + 1 |
| 508 |
|
|
i_proche = ij_proche - (j_proche-1)*imdep |
| 509 |
|
|
PRINT*, "solution:", ij_proche, i_proche, j_proche |
| 510 |
|
|
rugosite(i,j) = entree(i_proche,j_proche) |
| 511 |
|
|
ENDIF |
| 512 |
|
|
ELSE |
| 513 |
|
|
rugosite(i,j) = 0.001 |
| 514 |
|
|
ENDIF |
| 515 |
|
|
ENDDO |
| 516 |
|
|
ENDDO |
| 517 |
|
|
|
| 518 |
|
|
RETURN |
| 519 |
|
|
END function rugosite |
| 520 |
|
|
|
| 521 |
|
|
!************************************ |
| 522 |
|
|
|
| 523 |
|
|
real function sea_ice(xdata, ydata, glace01, x, y) |
| 524 |
|
|
|
| 525 |
|
|
!======================================================================= |
| 526 |
|
|
! z.x.li (le 1 avril 1994): Transformer un champ d'indicateur de la |
| 527 |
|
|
! glace (1, sinon 0) d'une grille fine a un champ de fraction de glace |
| 528 |
|
|
! (entre 0 et 1) dans une grille plus grossiere. |
| 529 |
|
|
|
| 530 |
|
|
! Methode naive (voir grille_m) |
| 531 |
|
|
!======================================================================= |
| 532 |
|
|
|
| 533 |
guez |
13 |
use numer_rec, only: assert_eq |
| 534 |
guez |
3 |
|
| 535 |
|
|
REAL, intent(in):: xdata(:),ydata(:) |
| 536 |
|
|
REAL, intent(in):: glace01(:,:) |
| 537 |
|
|
REAL, intent(in):: x(:),y(:) |
| 538 |
|
|
dimension sea_ice(size(x), size(y)) |
| 539 |
|
|
|
| 540 |
|
|
! Variables local to the procedure: |
| 541 |
|
|
INTEGER imdep, jmdep |
| 542 |
|
|
INTEGER imar, jmar |
| 543 |
|
|
INTEGER i, j, ii, jj |
| 544 |
|
|
REAL a(400),b(400),c(400),d(400) |
| 545 |
|
|
REAL num_tot(400,400), num_ice(400,400) |
| 546 |
|
|
REAL distans(400*400) |
| 547 |
|
|
INTEGER i_proche, j_proche, ij_proche |
| 548 |
|
|
REAL zzmin |
| 549 |
|
|
|
| 550 |
|
|
!------------------------------ |
| 551 |
|
|
|
| 552 |
|
|
imdep = assert_eq(size(xdata), size(glace01, 1), "sea_ice") |
| 553 |
|
|
jmdep = assert_eq(size(ydata), size(glace01, 2), "sea_ice") |
| 554 |
|
|
imar = size(x) |
| 555 |
|
|
jmar = size(y) |
| 556 |
|
|
|
| 557 |
|
|
IF (imar.GT.400 .OR. jmar.GT.400) THEN |
| 558 |
|
|
PRINT*, 'imar ou jmar trop grand', imar, jmar |
| 559 |
|
|
STOP 1 |
| 560 |
|
|
ENDIF |
| 561 |
|
|
|
| 562 |
|
|
a(1) = x(1) - (x(2)-x(1))/2.0 |
| 563 |
|
|
b(1) = (x(1)+x(2))/2.0 |
| 564 |
|
|
DO i = 2, imar-1 |
| 565 |
|
|
a(i) = b(i-1) |
| 566 |
|
|
b(i) = (x(i)+x(i+1))/2.0 |
| 567 |
|
|
ENDDO |
| 568 |
|
|
a(imar) = b(imar-1) |
| 569 |
|
|
b(imar) = x(imar) + (x(imar)-x(imar-1))/2.0 |
| 570 |
|
|
|
| 571 |
|
|
c(1) = y(1) - (y(2)-y(1))/2.0 |
| 572 |
|
|
d(1) = (y(1)+y(2))/2.0 |
| 573 |
|
|
DO j = 2, jmar-1 |
| 574 |
|
|
c(j) = d(j-1) |
| 575 |
|
|
d(j) = (y(j)+y(j+1))/2.0 |
| 576 |
|
|
ENDDO |
| 577 |
|
|
c(jmar) = d(jmar-1) |
| 578 |
|
|
d(jmar) = y(jmar) + (y(jmar)-y(jmar-1))/2.0 |
| 579 |
|
|
|
| 580 |
|
|
DO i = 1, imar |
| 581 |
|
|
DO j = 1, jmar |
| 582 |
|
|
num_ice(i,j) = 0.0 |
| 583 |
|
|
num_tot(i,j) = 0.0 |
| 584 |
|
|
ENDDO |
| 585 |
|
|
ENDDO |
| 586 |
|
|
|
| 587 |
|
|
! ..... Modif P. Le Van ( 23/08/95 ) .... |
| 588 |
|
|
|
| 589 |
|
|
DO ii = 1, imar |
| 590 |
|
|
DO jj = 1, jmar |
| 591 |
|
|
DO i = 1, imdep |
| 592 |
|
|
IF( ( xdata(i)-a(ii) >= 1.e-5.AND.xdata(i)-b(ii) <= 1.e-5 ).OR. & |
| 593 |
|
|
( xdata(i)-a(ii) <= 1.e-5.AND.xdata(i)-b(ii) >= 1.e-5 ) ) & |
| 594 |
|
|
THEN |
| 595 |
|
|
DO j = 1, jmdep |
| 596 |
|
|
IF( (ydata(j)-c(jj) >= 1.e-5.AND.ydata(j)-d(jj) <= 1.e-5 ).OR. & |
| 597 |
|
|
( ydata(j)-c(jj) <= 1.e-5.AND.ydata(j)-d(jj) >= 1.e-5 ) ) & |
| 598 |
|
|
THEN |
| 599 |
|
|
num_tot(ii,jj) = num_tot(ii,jj) + 1.0 |
| 600 |
|
|
IF (NINT(glace01(i,j)).EQ.1 ) & |
| 601 |
|
|
num_ice(ii,jj) = num_ice(ii,jj) + 1.0 |
| 602 |
|
|
ENDIF |
| 603 |
|
|
ENDDO |
| 604 |
|
|
ENDIF |
| 605 |
|
|
ENDDO |
| 606 |
|
|
ENDDO |
| 607 |
|
|
ENDDO |
| 608 |
|
|
|
| 609 |
|
|
DO i = 1, imar |
| 610 |
|
|
DO j = 1, jmar |
| 611 |
|
|
IF (num_tot(i,j) .GT. 0.001) THEN |
| 612 |
|
|
IF (num_ice(i,j).GT.0.001) THEN |
| 613 |
|
|
sea_ice(i,j) = num_ice(i,j) / num_tot(i,j) |
| 614 |
|
|
ELSE |
| 615 |
|
|
sea_ice(i,j) = 0.0 |
| 616 |
|
|
ENDIF |
| 617 |
|
|
ELSE |
| 618 |
|
|
PRINT*, 'probleme,i,j=', i,j |
| 619 |
|
|
!cc STOP 1 |
| 620 |
|
|
CALL dist_sphe(x(i),y(j),xdata,ydata,imdep,jmdep,distans) |
| 621 |
|
|
ij_proche = 1 |
| 622 |
|
|
zzmin = distans(ij_proche) |
| 623 |
|
|
DO ii = 2, imdep*jmdep |
| 624 |
|
|
IF (distans(ii).LT.zzmin) THEN |
| 625 |
|
|
zzmin = distans(ii) |
| 626 |
|
|
ij_proche = ii |
| 627 |
|
|
ENDIF |
| 628 |
|
|
ENDDO |
| 629 |
|
|
j_proche = (ij_proche-1)/imdep + 1 |
| 630 |
|
|
i_proche = ij_proche - (j_proche-1)*imdep |
| 631 |
|
|
PRINT*, "solution:", ij_proche, i_proche, j_proche |
| 632 |
|
|
IF (NINT(glace01(i_proche,j_proche)).EQ.1 ) THEN |
| 633 |
|
|
sea_ice(i,j) = 1.0 |
| 634 |
|
|
ELSE |
| 635 |
|
|
sea_ice(i,j) = 0.0 |
| 636 |
|
|
ENDIF |
| 637 |
|
|
ENDIF |
| 638 |
|
|
ENDDO |
| 639 |
|
|
ENDDO |
| 640 |
|
|
|
| 641 |
|
|
RETURN |
| 642 |
|
|
END function sea_ice |
| 643 |
|
|
|
| 644 |
|
|
!************************************* |
| 645 |
|
|
|
| 646 |
|
|
SUBROUTINE rugsoro(imrel, jmrel, xrel, yrel, relief, immod, jmmod, xmod, & |
| 647 |
|
|
ymod, rugs) |
| 648 |
|
|
|
| 649 |
guez |
22 |
! Calcule la longueur de rugosite liee au relief en utilisant |
| 650 |
|
|
! l'ecart-type dans une maille de 1x1. |
| 651 |
guez |
3 |
|
| 652 |
|
|
INTEGER, intent(in):: imrel, jmrel |
| 653 |
|
|
REAL, intent(in):: xrel(imrel),yrel(jmrel) |
| 654 |
|
|
REAL, intent(in):: relief(imrel,jmrel) |
| 655 |
|
|
|
| 656 |
|
|
INTEGER, intent(in):: immod, jmmod |
| 657 |
|
|
REAL, intent(in):: xmod(immod),ymod(jmmod) |
| 658 |
|
|
REAL, intent(out):: rugs(immod,jmmod) |
| 659 |
|
|
|
| 660 |
guez |
22 |
REAL zzmin |
| 661 |
|
|
REAL amin, AMAX |
| 662 |
guez |
3 |
INTEGER imtmp, jmtmp |
| 663 |
|
|
PARAMETER (imtmp=360,jmtmp=180) |
| 664 |
|
|
REAL xtmp(imtmp), ytmp(jmtmp) |
| 665 |
|
|
double precision cham1tmp(imtmp,jmtmp), cham2tmp(imtmp,jmtmp) |
| 666 |
|
|
REAL zzzz |
| 667 |
|
|
|
| 668 |
|
|
INTEGER i, j, ii, jj |
| 669 |
|
|
REAL a(2200),b(2200),c(1100),d(1100) |
| 670 |
|
|
REAL number(2200,1100) |
| 671 |
|
|
|
| 672 |
|
|
REAL distans(400*400) |
| 673 |
|
|
INTEGER i_proche, j_proche, ij_proche |
| 674 |
|
|
|
| 675 |
guez |
22 |
!--------------------------------------------------------- |
| 676 |
|
|
|
| 677 |
guez |
3 |
IF (immod.GT.2200 .OR. jmmod.GT.1100) THEN |
| 678 |
|
|
PRINT*, 'immod ou jmmod trop grand', immod, jmmod |
| 679 |
|
|
STOP 1 |
| 680 |
|
|
ENDIF |
| 681 |
|
|
|
| 682 |
|
|
! Calculs intermediares: |
| 683 |
|
|
|
| 684 |
|
|
xtmp(1) = -180.0 + 360.0/FLOAT(imtmp) / 2.0 |
| 685 |
|
|
DO i = 2, imtmp |
| 686 |
|
|
xtmp(i) = xtmp(i-1) + 360.0/FLOAT(imtmp) |
| 687 |
|
|
ENDDO |
| 688 |
|
|
DO i = 1, imtmp |
| 689 |
|
|
xtmp(i) = xtmp(i) /180.0 * 4.0*ATAN(1.0) |
| 690 |
|
|
ENDDO |
| 691 |
|
|
ytmp(1) = -90.0 + 180.0/FLOAT(jmtmp) / 2.0 |
| 692 |
|
|
DO j = 2, jmtmp |
| 693 |
|
|
ytmp(j) = ytmp(j-1) + 180.0/FLOAT(jmtmp) |
| 694 |
|
|
ENDDO |
| 695 |
|
|
DO j = 1, jmtmp |
| 696 |
|
|
ytmp(j) = ytmp(j) /180.0 * 4.0*ATAN(1.0) |
| 697 |
|
|
ENDDO |
| 698 |
|
|
|
| 699 |
|
|
a(1) = xtmp(1) - (xtmp(2)-xtmp(1))/2.0 |
| 700 |
|
|
b(1) = (xtmp(1)+xtmp(2))/2.0 |
| 701 |
|
|
DO i = 2, imtmp-1 |
| 702 |
|
|
a(i) = b(i-1) |
| 703 |
|
|
b(i) = (xtmp(i)+xtmp(i+1))/2.0 |
| 704 |
|
|
ENDDO |
| 705 |
|
|
a(imtmp) = b(imtmp-1) |
| 706 |
|
|
b(imtmp) = xtmp(imtmp) + (xtmp(imtmp)-xtmp(imtmp-1))/2.0 |
| 707 |
|
|
|
| 708 |
|
|
c(1) = ytmp(1) - (ytmp(2)-ytmp(1))/2.0 |
| 709 |
|
|
d(1) = (ytmp(1)+ytmp(2))/2.0 |
| 710 |
|
|
DO j = 2, jmtmp-1 |
| 711 |
|
|
c(j) = d(j-1) |
| 712 |
|
|
d(j) = (ytmp(j)+ytmp(j+1))/2.0 |
| 713 |
|
|
ENDDO |
| 714 |
|
|
c(jmtmp) = d(jmtmp-1) |
| 715 |
|
|
d(jmtmp) = ytmp(jmtmp) + (ytmp(jmtmp)-ytmp(jmtmp-1))/2.0 |
| 716 |
|
|
|
| 717 |
|
|
DO i = 1, imtmp |
| 718 |
|
|
DO j = 1, jmtmp |
| 719 |
|
|
number(i,j) = 0.0 |
| 720 |
guez |
22 |
cham1tmp(i,j) = 0d0 |
| 721 |
|
|
cham2tmp(i,j) = 0d0 |
| 722 |
guez |
3 |
ENDDO |
| 723 |
|
|
ENDDO |
| 724 |
|
|
|
| 725 |
|
|
! ..... Modif P. Le Van ( 23/08/95 ) .... |
| 726 |
|
|
|
| 727 |
|
|
DO ii = 1, imtmp |
| 728 |
|
|
DO jj = 1, jmtmp |
| 729 |
|
|
DO i = 1, imrel |
| 730 |
|
|
IF( ( xrel(i)-a(ii) >= 1.e-5.AND.xrel(i)-b(ii) <= 1.e-5 ).OR. & |
| 731 |
|
|
( xrel(i)-a(ii) <= 1.e-5.AND.xrel(i)-b(ii) >= 1.e-5 ) ) & |
| 732 |
|
|
THEN |
| 733 |
|
|
DO j = 1, jmrel |
| 734 |
|
|
IF ((yrel(j)-c(jj) >= 1.e-5.AND.yrel(j)-d(jj) <= 1.e-5 ) & |
| 735 |
|
|
.OR. (yrel(j)-c(jj) <= 1.e-5 .AND. & |
| 736 |
|
|
yrel(j)-d(jj) >= 1.e-5 ) ) & |
| 737 |
|
|
THEN |
| 738 |
|
|
number(ii,jj) = number(ii,jj) + 1.0 |
| 739 |
|
|
cham1tmp(ii,jj) = cham1tmp(ii,jj) + relief(i,j) |
| 740 |
|
|
cham2tmp(ii,jj) = cham2tmp(ii,jj) & |
| 741 |
guez |
22 |
+ relief(i,j) * relief(i,j) |
| 742 |
guez |
3 |
ENDIF |
| 743 |
|
|
ENDDO |
| 744 |
|
|
ENDIF |
| 745 |
|
|
ENDDO |
| 746 |
|
|
ENDDO |
| 747 |
|
|
ENDDO |
| 748 |
|
|
|
| 749 |
|
|
DO i = 1, imtmp |
| 750 |
|
|
DO j = 1, jmtmp |
| 751 |
|
|
IF (number(i,j) .GT. 0.001) THEN |
| 752 |
|
|
cham1tmp(i,j) = cham1tmp(i,j) / number(i,j) |
| 753 |
|
|
cham2tmp(i,j) = cham2tmp(i,j) / number(i,j) |
| 754 |
guez |
22 |
zzzz = cham2tmp(i,j) - cham1tmp(i,j)**2 |
| 755 |
guez |
3 |
if (zzzz .lt. 0.0) then |
| 756 |
|
|
if (zzzz .gt. -7.5) then |
| 757 |
|
|
zzzz = 0.0 |
| 758 |
|
|
print*,'Pb rugsoro, -7.5 < zzzz < 0, => zzz = 0.0' |
| 759 |
|
|
else |
| 760 |
|
|
stop 'Pb rugsoro, zzzz <-7.5' |
| 761 |
|
|
endif |
| 762 |
|
|
endif |
| 763 |
|
|
cham2tmp(i,j) = SQRT(zzzz) |
| 764 |
|
|
ELSE |
| 765 |
|
|
PRINT*, 'probleme,i,j=', i,j |
| 766 |
|
|
STOP 1 |
| 767 |
|
|
ENDIF |
| 768 |
|
|
ENDDO |
| 769 |
|
|
ENDDO |
| 770 |
|
|
|
| 771 |
|
|
amin = cham2tmp(1,1) |
| 772 |
|
|
AMAX = cham2tmp(1,1) |
| 773 |
|
|
DO j = 1, jmtmp |
| 774 |
|
|
DO i = 1, imtmp |
| 775 |
|
|
IF (cham2tmp(i,j).GT.AMAX) AMAX = cham2tmp(i,j) |
| 776 |
|
|
IF (cham2tmp(i,j).LT.amin) amin = cham2tmp(i,j) |
| 777 |
|
|
ENDDO |
| 778 |
|
|
ENDDO |
| 779 |
|
|
PRINT*, 'Ecart-type 1x1:', amin, AMAX |
| 780 |
|
|
|
| 781 |
|
|
a(1) = xmod(1) - (xmod(2)-xmod(1))/2.0 |
| 782 |
|
|
b(1) = (xmod(1)+xmod(2))/2.0 |
| 783 |
|
|
DO i = 2, immod-1 |
| 784 |
|
|
a(i) = b(i-1) |
| 785 |
|
|
b(i) = (xmod(i)+xmod(i+1))/2.0 |
| 786 |
|
|
ENDDO |
| 787 |
|
|
a(immod) = b(immod-1) |
| 788 |
|
|
b(immod) = xmod(immod) + (xmod(immod)-xmod(immod-1))/2.0 |
| 789 |
|
|
|
| 790 |
|
|
c(1) = ymod(1) - (ymod(2)-ymod(1))/2.0 |
| 791 |
|
|
d(1) = (ymod(1)+ymod(2))/2.0 |
| 792 |
|
|
DO j = 2, jmmod-1 |
| 793 |
|
|
c(j) = d(j-1) |
| 794 |
|
|
d(j) = (ymod(j)+ymod(j+1))/2.0 |
| 795 |
|
|
ENDDO |
| 796 |
|
|
c(jmmod) = d(jmmod-1) |
| 797 |
|
|
d(jmmod) = ymod(jmmod) + (ymod(jmmod)-ymod(jmmod-1))/2.0 |
| 798 |
|
|
|
| 799 |
|
|
DO i = 1, immod |
| 800 |
|
|
DO j = 1, jmmod |
| 801 |
|
|
number(i,j) = 0.0 |
| 802 |
|
|
rugs(i,j) = 0.0 |
| 803 |
|
|
ENDDO |
| 804 |
|
|
ENDDO |
| 805 |
|
|
|
| 806 |
|
|
DO ii = 1, immod |
| 807 |
|
|
DO jj = 1, jmmod |
| 808 |
|
|
DO i = 1, imtmp |
| 809 |
|
|
IF( ( xtmp(i)-a(ii) >= 1.e-5.AND.xtmp(i)-b(ii) <= 1.e-5 ).OR. & |
| 810 |
|
|
( xtmp(i)-a(ii) <= 1.e-5.AND.xtmp(i)-b(ii) >= 1.e-5 ) ) & |
| 811 |
|
|
THEN |
| 812 |
|
|
DO j = 1, jmtmp |
| 813 |
|
|
IF ((ytmp(j) - c(jj) >= 1.e-5 & |
| 814 |
|
|
.AND. ytmp(j) - d(jj) <= 1.e-5) .OR. & |
| 815 |
|
|
(ytmp(j) - c(jj) <= 1.e-5 & |
| 816 |
|
|
.AND. ytmp(j) - d(jj) >= 1.e-5)) & |
| 817 |
|
|
THEN |
| 818 |
|
|
number(ii,jj) = number(ii,jj) + 1.0 |
| 819 |
|
|
rugs(ii,jj) = rugs(ii,jj) & |
| 820 |
|
|
+ LOG(MAX(0.001d0,cham2tmp(i,j))) |
| 821 |
|
|
ENDIF |
| 822 |
|
|
ENDDO |
| 823 |
|
|
ENDIF |
| 824 |
|
|
ENDDO |
| 825 |
|
|
ENDDO |
| 826 |
|
|
ENDDO |
| 827 |
|
|
|
| 828 |
|
|
DO i = 1, immod |
| 829 |
|
|
DO j = 1, jmmod |
| 830 |
|
|
IF (number(i,j) .GT. 0.001) THEN |
| 831 |
|
|
rugs(i,j) = rugs(i,j) / number(i,j) |
| 832 |
|
|
rugs(i,j) = EXP(rugs(i,j)) |
| 833 |
|
|
ELSE |
| 834 |
|
|
PRINT*, 'probleme,i,j=', i,j |
| 835 |
|
|
CALL dist_sphe(xmod(i),ymod(j),xtmp,ytmp,imtmp,jmtmp,distans) |
| 836 |
|
|
ij_proche = 1 |
| 837 |
|
|
zzmin = distans(ij_proche) |
| 838 |
|
|
DO ii = 2, imtmp*jmtmp |
| 839 |
|
|
IF (distans(ii).LT.zzmin) THEN |
| 840 |
|
|
zzmin = distans(ii) |
| 841 |
|
|
ij_proche = ii |
| 842 |
|
|
ENDIF |
| 843 |
|
|
ENDDO |
| 844 |
|
|
j_proche = (ij_proche-1)/imtmp + 1 |
| 845 |
|
|
i_proche = ij_proche - (j_proche-1)*imtmp |
| 846 |
|
|
PRINT*, "solution:", ij_proche, i_proche, j_proche |
| 847 |
|
|
rugs(i,j) = LOG(MAX(0.001d0,cham2tmp(i_proche,j_proche))) |
| 848 |
|
|
ENDIF |
| 849 |
|
|
ENDDO |
| 850 |
|
|
ENDDO |
| 851 |
|
|
|
| 852 |
|
|
amin = rugs(1,1) |
| 853 |
|
|
AMAX = rugs(1,1) |
| 854 |
|
|
DO j = 1, jmmod |
| 855 |
|
|
DO i = 1, immod |
| 856 |
|
|
IF (rugs(i,j).GT.AMAX) AMAX = rugs(i,j) |
| 857 |
|
|
IF (rugs(i,j).LT.amin) amin = rugs(i,j) |
| 858 |
|
|
ENDDO |
| 859 |
|
|
ENDDO |
| 860 |
|
|
PRINT*, 'Ecart-type du modele:', amin, AMAX |
| 861 |
|
|
|
| 862 |
|
|
DO j = 1, jmmod |
| 863 |
|
|
DO i = 1, immod |
| 864 |
|
|
rugs(i,j) = rugs(i,j) / AMAX * 20.0 |
| 865 |
|
|
ENDDO |
| 866 |
|
|
ENDDO |
| 867 |
|
|
|
| 868 |
|
|
amin = rugs(1,1) |
| 869 |
|
|
AMAX = rugs(1,1) |
| 870 |
|
|
DO j = 1, jmmod |
| 871 |
|
|
DO i = 1, immod |
| 872 |
|
|
IF (rugs(i,j).GT.AMAX) AMAX = rugs(i,j) |
| 873 |
|
|
IF (rugs(i,j).LT.amin) amin = rugs(i,j) |
| 874 |
|
|
ENDDO |
| 875 |
|
|
ENDDO |
| 876 |
|
|
PRINT*, 'Longueur de rugosite du modele:', amin, AMAX |
| 877 |
|
|
|
| 878 |
|
|
END SUBROUTINE rugsoro |
| 879 |
|
|
! |
| 880 |
|
|
SUBROUTINE dist_sphe(rf_lon,rf_lat,rlon,rlat,im,jm,distance) |
| 881 |
|
|
|
| 882 |
|
|
! Auteur: Laurent Li (le 30 decembre 1996) |
| 883 |
|
|
|
| 884 |
|
|
! Ce programme calcule la distance minimale (selon le grand cercle) |
| 885 |
|
|
! entre deux points sur la terre |
| 886 |
|
|
|
| 887 |
|
|
INTEGER, intent(in):: im, jm ! dimensions |
| 888 |
|
|
REAL, intent(in):: rf_lon ! longitude du point de reference (degres) |
| 889 |
|
|
REAL, intent(in):: rf_lat ! latitude du point de reference (degres) |
| 890 |
|
|
REAL, intent(in):: rlon(im), rlat(jm) ! longitude et latitude des points |
| 891 |
|
|
|
| 892 |
|
|
REAL, intent(out):: distance(im,jm) ! distances en metre |
| 893 |
|
|
|
| 894 |
|
|
REAL rlon1, rlat1 |
| 895 |
|
|
REAL rlon2, rlat2 |
| 896 |
|
|
REAL dist |
| 897 |
|
|
REAL pa, pb, p, pi |
| 898 |
|
|
|
| 899 |
|
|
REAL radius |
| 900 |
|
|
PARAMETER (radius=6371229.) |
| 901 |
|
|
integer i, j |
| 902 |
|
|
|
| 903 |
|
|
pi = 4.0 * ATAN(1.0) |
| 904 |
|
|
|
| 905 |
|
|
DO j = 1, jm |
| 906 |
|
|
DO i = 1, im |
| 907 |
|
|
|
| 908 |
|
|
rlon1=rf_lon |
| 909 |
|
|
rlat1=rf_lat |
| 910 |
|
|
rlon2=rlon(i) |
| 911 |
|
|
rlat2=rlat(j) |
| 912 |
|
|
pa = pi/2.0 - rlat1*pi/180.0 ! dist. entre pole n et point a |
| 913 |
|
|
pb = pi/2.0 - rlat2*pi/180.0 ! dist. entre pole n et point b |
| 914 |
|
|
p = (rlon1-rlon2)*pi/180.0 ! angle entre a et b (leurs meridiens) |
| 915 |
|
|
|
| 916 |
|
|
dist = ACOS( COS(pa)*COS(pb) + SIN(pa)*SIN(pb)*COS(p)) |
| 917 |
|
|
dist = radius * dist |
| 918 |
|
|
distance(i,j) = dist |
| 919 |
|
|
|
| 920 |
|
|
end DO |
| 921 |
|
|
end DO |
| 922 |
|
|
|
| 923 |
|
|
END SUBROUTINE dist_sphe |
| 924 |
|
|
|
| 925 |
|
|
end module grid_atob |
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