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MODULE guide_m |
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! From dyn3d/guide.F, v 1.3 2005/05/25 13:10:09 |
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! and dyn3d/guide.h, v 1.1.1.1 2004/05/19 12:53:06 |
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REAL :: tau_min_u, tau_max_u |
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REAL :: tau_min_v, tau_max_v |
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REAL :: tau_min_t, tau_max_t |
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REAL :: tau_min_q, tau_max_q |
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REAL :: tau_min_p, tau_max_p |
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REAL :: aire_min, aire_max |
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LOGICAL :: guide_u, guide_v, guide_t, guide_q, guide_p |
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REAL :: lat_min_guide, lat_max_guide |
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LOGICAL :: ncep, ini_anal |
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INTEGER :: online |
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CONTAINS |
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SUBROUTINE guide(itau, ucov, vcov, teta, q, masse, ps) |
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USE dimens_m, ONLY : jjm, llm |
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USE paramet_m, ONLY : iip1, ip1jm, ip1jmp1, jjp1, llmp1 |
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USE comconst, ONLY : cpp, daysec, dtvr, kappa, pi |
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USE comvert, ONLY : ap, bp, preff, presnivs |
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USE conf_gcm_m, ONLY : day_step, iperiod |
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USE comgeom, ONLY : aire, rlatu, rlonv |
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USE serre, ONLY : clat, clon |
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USE q_sat_m, ONLY : q_sat |
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USE exner_hyb_m, ONLY : exner_hyb |
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USE pression_m, ONLY : pression |
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USE inigrads_m, ONLY : inigrads |
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use netcdf, only: nf90_nowrite, nf90_open, nf90_close |
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IMPLICIT NONE |
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INCLUDE 'netcdf.inc' |
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! ...... Version du 10/01/98 .......... |
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! avec coordonnees verticales hybrides |
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! avec nouveaux operat. dissipation * ( gradiv2, divgrad2, nxgraro2 ) |
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!======================================================================= |
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! Auteur: F.Hourdin |
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! ------- |
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! Objet: |
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! ------ |
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! GCM LMD nouvelle grille |
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!======================================================================= |
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! Dans inigeom , nouveaux calculs pour les elongations cu , cv |
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! et possibilite d'appeler une fonction f(y) a derivee tangente |
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! hyperbolique a la place de la fonction a derivee sinusoidale. |
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! ... Possibilite de choisir le shema de Van-leer pour l'advection de |
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! q , en faisant iadv = 10 dans traceur (29/04/97) . |
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!----------------------------------------------------------------------- |
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! Declarations: |
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! ------------- |
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! variables dynamiques |
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REAL :: vcov(ip1jm, llm), ucov(ip1jmp1, llm) ! vents covariants |
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REAL :: teta(ip1jmp1, llm) ! temperature potentielle |
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REAL :: q(ip1jmp1, llm) ! temperature potentielle |
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REAL :: ps(ip1jmp1) ! pression au sol |
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REAL :: masse(ip1jmp1, llm) ! masse d'air |
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! common passe pour des sorties |
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REAL :: dxdys(iip1, jjp1), dxdyu(iip1, jjp1), dxdyv(iip1, jjm) |
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COMMON /comdxdy/dxdys, dxdyu, dxdyv |
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! variables dynamiques pour les reanalyses. |
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REAL :: ucovrea1(ip1jmp1, llm), vcovrea1(ip1jm, llm) !vts cov reas |
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REAL :: tetarea1(ip1jmp1, llm) ! temp pot reales |
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REAL :: qrea1(ip1jmp1, llm) ! temp pot reales |
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REAL :: psrea1(ip1jmp1) ! ps |
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REAL :: ucovrea2(ip1jmp1, llm), vcovrea2(ip1jm, llm) !vts cov reas |
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REAL :: tetarea2(ip1jmp1, llm) ! temp pot reales |
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REAL :: qrea2(ip1jmp1, llm) ! temp pot reales |
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REAL :: masserea2(ip1jmp1, llm) ! masse |
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REAL :: psrea2(ip1jmp1) ! ps |
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REAL :: alpha_q(ip1jmp1) |
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REAL :: alpha_t(ip1jmp1), alpha_p(ip1jmp1) |
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REAL :: alpha_u(ip1jmp1), alpha_v(ip1jm) |
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REAL :: dday_step, toto, reste, itau_test |
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INTEGER :: step_rea, count_no_rea |
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!IM 180305 real aire_min, aire_max |
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INTEGER :: ilon, ilat |
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REAL :: factt, ztau(ip1jmp1) |
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INTEGER, INTENT (IN) :: itau |
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INTEGER :: ij, l |
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INTEGER :: ncidpl, varidpl, nlev, status |
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INTEGER :: rcod, rid |
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REAL :: ditau, tau, a |
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SAVE nlev |
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! TEST SUR QSAT |
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REAL :: p(ip1jmp1, llmp1), pk(ip1jmp1, llm), pks(ip1jmp1) |
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REAL :: pkf(ip1jmp1, llm) |
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REAL :: pres(ip1jmp1, llm) |
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REAL :: qsat(ip1jmp1, llm) |
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REAL :: unskap |
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REAL :: tnat(ip1jmp1, llm) |
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!cccccccccccccccc |
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LOGICAL :: first |
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SAVE first |
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DATA first/ .TRUE./ |
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SAVE ucovrea1, vcovrea1, tetarea1, psrea1, qrea1 |
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SAVE ucovrea2, vcovrea2, tetarea2, masserea2, psrea2, qrea2 |
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SAVE alpha_t, alpha_q, alpha_u, alpha_v, alpha_p, itau_test |
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SAVE step_rea, count_no_rea |
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CHARACTER (10) :: file |
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INTEGER :: igrads |
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REAL :: dtgrads |
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SAVE igrads, dtgrads |
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DATA igrads, dtgrads/2, 100./ |
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PRINT *, 'Call sequence information: guide' |
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!----------------------------------------------------------------------- |
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! calcul de l'humidite saturante |
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!----------------------------------------------------------------------- |
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CALL pression(ip1jmp1, ap, bp, ps, p) |
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CALL massdair(p, masse) |
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PRINT *, 'OK1' |
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CALL exner_hyb(ps, p, pks, pk, pkf) |
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PRINT *, 'OK2' |
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tnat(:, :) = pk(:, :)*teta(:, :)/cpp |
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PRINT *, 'OK3' |
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unskap = 1./kappa |
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pres(:, :) = preff*(pk(:, :)/cpp)**unskap |
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PRINT *, 'OK4' |
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qsat = q_sat(tnat, pres) |
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!----------------------------------------------------------------------- |
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!----------------------------------------------------------------------- |
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! initialisations pour la lecture des reanalyses. |
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! alpha determine la part des injections de donnees a chaque etape |
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! alpha=1 signifie pas d'injection |
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! alpha=0 signifie injection totale |
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!----------------------------------------------------------------------- |
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PRINT *, 'ONLINE=', online |
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IF (online==-1) THEN |
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RETURN |
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END IF |
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IF (first) THEN |
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PRINT *, 'initialisation du guide ' |
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CALL conf_guide |
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PRINT *, 'apres conf_guide' |
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file = 'guide' |
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CALL inigrads(igrads, rlonv, 180./pi, -180., 180., rlatu, -90., 90., & |
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180./pi, presnivs, 1., dtgrads, file, 'dyn_zon ') |
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PRINT *, & |
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'1: en-ligne, 0: hors-ligne (x=x_rea), -1: climat (x=x_gcm)' |
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IF (online==-1) RETURN |
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IF (online==1) THEN |
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!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc |
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! Constantes de temps de rappel en jour |
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! 0.1 c'est en gros 2h30. |
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! 1e10 est une constante infinie donc en gros pas de guidage |
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!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc |
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! coordonnees du centre du zoom |
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CALL coordij(clon, clat, ilon, ilat) |
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! aire de la maille au centre du zoom |
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aire_min = aire(ilon+(ilat-1)*iip1) |
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! aire maximale de la maille |
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aire_max = 0. |
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DO ij = 1, ip1jmp1 |
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aire_max = max(aire_max, aire(ij)) |
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END DO |
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! factt = pas de temps en fraction de jour |
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factt = dtvr*iperiod/daysec |
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! subroutine tau2alpha(type, im, jm, factt, taumin, taumax, alpha) |
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CALL tau2alpha(3, iip1, jjm, factt, tau_min_v, tau_max_v, alpha_v) |
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CALL tau2alpha(2, iip1, jjp1, factt, tau_min_u, tau_max_u, alpha_u) |
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CALL tau2alpha(1, iip1, jjp1, factt, tau_min_t, tau_max_t, alpha_t) |
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CALL tau2alpha(1, iip1, jjp1, factt, tau_min_p, tau_max_p, alpha_p) |
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CALL tau2alpha(1, iip1, jjp1, factt, tau_min_q, tau_max_q, alpha_q) |
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CALL dump2d(iip1, jjp1, aire, 'AIRE MAILLe ') |
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CALL dump2d(iip1, jjp1, alpha_u, 'COEFF U ') |
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CALL dump2d(iip1, jjp1, alpha_t, 'COEFF T ') |
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!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc |
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! Cas ou on force exactement par les variables analysees |
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ELSE |
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alpha_t = 0. |
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alpha_u = 0. |
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alpha_v = 0. |
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alpha_p = 0. |
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! physic=.false. |
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END IF |
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itau_test = 1001 |
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step_rea = 1 |
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count_no_rea = 0 |
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ncidpl = -99 |
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! itau_test montre si l'importation a deja ete faite au rang itau |
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! lecture d'un fichier netcdf pour determiner le nombre de niveaux |
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if (guide_u) then |
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if (ncidpl.eq.-99) rcod=nf90_open('u.nc',Nf90_NOWRITe,ncidpl) |
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endif |
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if (guide_v) then |
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if (ncidpl.eq.-99) rcod=nf90_open('v.nc',nf90_nowrite,ncidpl) |
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endif |
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if (guide_T) then |
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if (ncidpl.eq.-99) rcod=nf90_open('T.nc',nf90_nowrite,ncidpl) |
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endif |
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if (guide_Q) then |
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if (ncidpl.eq.-99) rcod=nf90_open('hur.nc',nf90_nowrite, ncidpl) |
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endif |
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IF (ncep) THEN |
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status = nf_inq_dimid(ncidpl, 'LEVEL', rid) |
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ELSE |
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status = nf_inq_dimid(ncidpl, 'PRESSURE', rid) |
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END IF |
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status = nf_inq_dimlen(ncidpl, rid, nlev) |
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PRINT *, 'nlev', nlev |
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rcod = nf90_close(ncidpl) |
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! Lecture du premier etat des reanalyses. |
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CALL read_reanalyse(1, ps, ucovrea2, vcovrea2, tetarea2, qrea2, & |
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masserea2, psrea2, 1, nlev) |
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qrea2(:, :) = max(qrea2(:, :), 0.1) |
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!----------------------------------------------------------------------- |
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! Debut de l'integration temporelle: |
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! ---------------------------------- |
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END IF ! first |
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!----------------------------------------------------------------------- |
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!----- IMPORTATION DES VENTS, PRESSION ET TEMPERATURE REELS: |
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!----------------------------------------------------------------------- |
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ditau = real(itau) |
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dday_step = real(day_step) |
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WRITE (*, *) 'ditau, dday_step' |
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WRITE (*, *) ditau, dday_step |
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toto = 4*ditau/dday_step |
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reste = toto - aint(toto) |
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! write(*, *)'toto, reste', toto, reste |
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IF (reste==0.) THEN |
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IF (itau_test==itau) THEN |
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WRITE (*, *) 'deuxieme passage de advreel a itau=', itau |
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STOP |
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ELSE |
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vcovrea1(:, :) = vcovrea2(:, :) |
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ucovrea1(:, :) = ucovrea2(:, :) |
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tetarea1(:, :) = tetarea2(:, :) |
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qrea1(:, :) = qrea2(:, :) |
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PRINT *, 'LECTURE REANALYSES, pas ', step_rea, 'apres ', & |
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count_no_rea, ' non lectures' |
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step_rea = step_rea + 1 |
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itau_test = itau |
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CALL read_reanalyse(step_rea, ps, ucovrea2, vcovrea2, tetarea2, & |
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qrea2, masserea2, psrea2, 1, nlev) |
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qrea2(:, :) = max(qrea2(:, :), 0.1) |
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factt = dtvr*iperiod/daysec |
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ztau(:) = factt/max(alpha_t(:), 1.E-10) |
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CALL wrgrads(igrads, 1, aire, 'aire ', 'aire ') |
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CALL wrgrads(igrads, 1, dxdys, 'dxdy ', 'dxdy ') |
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CALL wrgrads(igrads, 1, alpha_u, 'au ', 'au ') |
| 297 |
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CALL wrgrads(igrads, 1, alpha_t, 'at ', 'at ') |
| 298 |
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CALL wrgrads(igrads, 1, ztau, 'taut ', 'taut ') |
| 299 |
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CALL wrgrads(igrads, llm, ucov, 'u ', 'u ') |
| 300 |
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CALL wrgrads(igrads, llm, ucovrea2, 'ua ', 'ua ') |
| 301 |
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CALL wrgrads(igrads, llm, teta, 'T ', 'T ') |
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CALL wrgrads(igrads, llm, tetarea2, 'Ta ', 'Ta ') |
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CALL wrgrads(igrads, llm, qrea2, 'Qa ', 'Qa ') |
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CALL wrgrads(igrads, llm, q, 'Q ', 'Q ') |
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CALL wrgrads(igrads, llm, qsat, 'QSAT ', 'QSAT ') |
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END IF |
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ELSE |
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count_no_rea = count_no_rea + 1 |
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END IF |
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!----------------------------------------------------------------------- |
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! Guidage |
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! x_gcm = a * x_gcm + (1-a) * x_reanalyses |
| 316 |
|
|
!----------------------------------------------------------------------- |
| 317 |
guez |
3 |
|
| 318 |
guez |
20 |
IF (ini_anal) PRINT *, 'ATTENTION !!! ON PART DU GUIDAGE' |
| 319 |
guez |
3 |
|
| 320 |
guez |
20 |
ditau = real(itau) |
| 321 |
|
|
dday_step = real(day_step) |
| 322 |
guez |
3 |
|
| 323 |
|
|
|
| 324 |
guez |
20 |
tau = 4*ditau/dday_step |
| 325 |
|
|
tau = tau - aint(tau) |
| 326 |
|
|
|
| 327 |
|
|
! ucov |
| 328 |
|
|
IF (guide_u) THEN |
| 329 |
|
|
DO l = 1, llm |
| 330 |
|
|
DO ij = 1, ip1jmp1 |
| 331 |
|
|
a = (1.-tau)*ucovrea1(ij, l) + tau*ucovrea2(ij, l) |
| 332 |
|
|
ucov(ij, l) = (1.-alpha_u(ij))*ucov(ij, l) + alpha_u(ij)*a |
| 333 |
|
|
IF (first .AND. ini_anal) ucov(ij, l) = a |
| 334 |
|
|
END DO |
| 335 |
|
|
END DO |
| 336 |
|
|
END IF |
| 337 |
|
|
|
| 338 |
|
|
! teta |
| 339 |
|
|
IF (guide_t) THEN |
| 340 |
|
|
DO l = 1, llm |
| 341 |
|
|
DO ij = 1, ip1jmp1 |
| 342 |
|
|
a = (1.-tau)*tetarea1(ij, l) + tau*tetarea2(ij, l) |
| 343 |
|
|
teta(ij, l) = (1.-alpha_t(ij))*teta(ij, l) + alpha_t(ij)*a |
| 344 |
|
|
IF (first .AND. ini_anal) teta(ij, l) = a |
| 345 |
|
|
END DO |
| 346 |
|
|
END DO |
| 347 |
|
|
END IF |
| 348 |
|
|
|
| 349 |
|
|
! P |
| 350 |
|
|
IF (guide_p) THEN |
| 351 |
|
|
DO ij = 1, ip1jmp1 |
| 352 |
|
|
a = (1.-tau)*psrea1(ij) + tau*psrea2(ij) |
| 353 |
|
|
ps(ij) = (1.-alpha_p(ij))*ps(ij) + alpha_p(ij)*a |
| 354 |
|
|
IF (first .AND. ini_anal) ps(ij) = a |
| 355 |
|
|
END DO |
| 356 |
|
|
CALL pression(ip1jmp1, ap, bp, ps, p) |
| 357 |
|
|
CALL massdair(p, masse) |
| 358 |
|
|
END IF |
| 359 |
|
|
|
| 360 |
|
|
|
| 361 |
|
|
! q |
| 362 |
|
|
IF (guide_q) THEN |
| 363 |
|
|
DO l = 1, llm |
| 364 |
|
|
DO ij = 1, ip1jmp1 |
| 365 |
|
|
a = (1.-tau)*qrea1(ij, l) + tau*qrea2(ij, l) |
| 366 |
|
|
! hum relative en % -> hum specif |
| 367 |
|
|
a = qsat(ij, l)*a*0.01 |
| 368 |
|
|
q(ij, l) = (1.-alpha_q(ij))*q(ij, l) + alpha_q(ij)*a |
| 369 |
|
|
IF (first .AND. ini_anal) q(ij, l) = a |
| 370 |
|
|
END DO |
| 371 |
|
|
END DO |
| 372 |
|
|
END IF |
| 373 |
|
|
|
| 374 |
|
|
! vcov |
| 375 |
|
|
IF (guide_v) THEN |
| 376 |
|
|
DO l = 1, llm |
| 377 |
|
|
DO ij = 1, ip1jm |
| 378 |
|
|
a = (1.-tau)*vcovrea1(ij, l) + tau*vcovrea2(ij, l) |
| 379 |
|
|
vcov(ij, l) = (1.-alpha_v(ij))*vcov(ij, l) + alpha_v(ij)*a |
| 380 |
|
|
IF (first .AND. ini_anal) vcov(ij, l) = a |
| 381 |
|
|
END DO |
| 382 |
|
|
IF (first .AND. ini_anal) vcov(ij, l) = a |
| 383 |
|
|
END DO |
| 384 |
|
|
END IF |
| 385 |
|
|
|
| 386 |
|
|
! call dump2d(iip1, jjp1, tetarea1, 'TETA REA 1 ') |
| 387 |
|
|
! call dump2d(iip1, jjp1, tetarea2, 'TETA REA 2 ') |
| 388 |
|
|
! call dump2d(iip1, jjp1, teta, 'TETA ') |
| 389 |
|
|
|
| 390 |
|
|
first = .FALSE. |
| 391 |
|
|
|
| 392 |
|
|
RETURN |
| 393 |
|
|
END SUBROUTINE guide |
| 394 |
|
|
|
| 395 |
guez |
3 |
!======================================================================= |
| 396 |
guez |
20 |
SUBROUTINE tau2alpha(type, pim, pjm, factt, taumin, taumax, alpha) |
| 397 |
guez |
3 |
!======================================================================= |
| 398 |
|
|
|
| 399 |
guez |
20 |
USE dimens_m, ONLY : iim, jjm |
| 400 |
|
|
USE paramet_m, ONLY : iip1, jjp1 |
| 401 |
|
|
USE comconst, ONLY : pi |
| 402 |
|
|
USE comgeom, ONLY : cu_2d, cv_2d, rlatu, rlatv |
| 403 |
|
|
USE serre, ONLY : clat, clon, grossismx, grossismy |
| 404 |
|
|
IMPLICIT NONE |
| 405 |
guez |
3 |
|
| 406 |
|
|
! arguments : |
| 407 |
guez |
20 |
INTEGER :: type |
| 408 |
|
|
INTEGER :: pim, pjm |
| 409 |
|
|
REAL :: factt, taumin, taumax |
| 410 |
|
|
REAL :: dxdy_, alpha(pim, pjm) |
| 411 |
|
|
REAL :: dxdy_min, dxdy_max |
| 412 |
guez |
3 |
|
| 413 |
|
|
! local : |
| 414 |
guez |
20 |
REAL :: alphamin, alphamax, gamma, xi |
| 415 |
|
|
SAVE gamma |
| 416 |
|
|
INTEGER :: i, j, ilon, ilat |
| 417 |
guez |
3 |
|
| 418 |
guez |
20 |
LOGICAL :: first |
| 419 |
|
|
SAVE first |
| 420 |
|
|
DATA first/ .TRUE./ |
| 421 |
guez |
3 |
|
| 422 |
guez |
20 |
REAL :: zdx(iip1, jjp1), zdy(iip1, jjp1) |
| 423 |
guez |
3 |
|
| 424 |
guez |
20 |
REAL :: zlat |
| 425 |
|
|
REAL :: dxdys(iip1, jjp1), dxdyu(iip1, jjp1), dxdyv(iip1, jjm) |
| 426 |
|
|
COMMON /comdxdy/dxdys, dxdyu, dxdyv |
| 427 |
guez |
3 |
|
| 428 |
guez |
20 |
IF (first) THEN |
| 429 |
|
|
DO j = 2, jjm |
| 430 |
|
|
DO i = 2, iip1 |
| 431 |
|
|
zdx(i, j) = 0.5*(cu_2d(i-1, j)+cu_2d(i, j))/cos(rlatu(j)) |
| 432 |
|
|
END DO |
| 433 |
|
|
zdx(1, j) = zdx(iip1, j) |
| 434 |
|
|
END DO |
| 435 |
|
|
DO j = 2, jjm |
| 436 |
|
|
DO i = 1, iip1 |
| 437 |
|
|
zdy(i, j) = 0.5*(cv_2d(i, j-1)+cv_2d(i, j)) |
| 438 |
|
|
END DO |
| 439 |
|
|
END DO |
| 440 |
|
|
DO i = 1, iip1 |
| 441 |
|
|
zdx(i, 1) = zdx(i, 2) |
| 442 |
|
|
zdx(i, jjp1) = zdx(i, jjm) |
| 443 |
|
|
zdy(i, 1) = zdy(i, 2) |
| 444 |
|
|
zdy(i, jjp1) = zdy(i, jjm) |
| 445 |
|
|
END DO |
| 446 |
|
|
DO j = 1, jjp1 |
| 447 |
|
|
DO i = 1, iip1 |
| 448 |
|
|
dxdys(i, j) = sqrt(zdx(i, j)*zdx(i, j)+zdy(i, j)*zdy(i, j)) |
| 449 |
|
|
END DO |
| 450 |
|
|
END DO |
| 451 |
|
|
DO j = 1, jjp1 |
| 452 |
|
|
DO i = 1, iim |
| 453 |
|
|
dxdyu(i, j) = 0.5*(dxdys(i, j)+dxdys(i+1, j)) |
| 454 |
|
|
END DO |
| 455 |
|
|
dxdyu(iip1, j) = dxdyu(1, j) |
| 456 |
|
|
END DO |
| 457 |
|
|
DO j = 1, jjm |
| 458 |
|
|
DO i = 1, iip1 |
| 459 |
|
|
dxdyv(i, j) = 0.5*(dxdys(i, j)+dxdys(i+1, j)) |
| 460 |
|
|
END DO |
| 461 |
|
|
END DO |
| 462 |
guez |
3 |
|
| 463 |
guez |
20 |
CALL dump2d(iip1, jjp1, dxdys, 'DX2DY2 SCAL ') |
| 464 |
|
|
CALL dump2d(iip1, jjp1, dxdyu, 'DX2DY2 U ') |
| 465 |
|
|
CALL dump2d(iip1, jjp1, dxdyv, 'DX2DY2 v ') |
| 466 |
guez |
3 |
|
| 467 |
|
|
! coordonnees du centre du zoom |
| 468 |
guez |
20 |
CALL coordij(clon, clat, ilon, ilat) |
| 469 |
guez |
3 |
! aire de la maille au centre du zoom |
| 470 |
guez |
20 |
dxdy_min = dxdys(ilon, ilat) |
| 471 |
guez |
3 |
! dxdy maximale de la maille |
| 472 |
guez |
20 |
dxdy_max = 0. |
| 473 |
|
|
DO j = 1, jjp1 |
| 474 |
|
|
DO i = 1, iip1 |
| 475 |
|
|
dxdy_max = max(dxdy_max, dxdys(i, j)) |
| 476 |
|
|
END DO |
| 477 |
|
|
END DO |
| 478 |
guez |
3 |
|
| 479 |
guez |
20 |
IF (abs(grossismx-1.)<0.1 .OR. abs(grossismy-1.)<0.1) THEN |
| 480 |
|
|
PRINT *, 'ATTENTION modele peu zoome' |
| 481 |
|
|
PRINT *, 'ATTENTION on prend une constante de guidage cste' |
| 482 |
|
|
gamma = 0. |
| 483 |
|
|
ELSE |
| 484 |
|
|
gamma = (dxdy_max-2.*dxdy_min)/(dxdy_max-dxdy_min) |
| 485 |
|
|
PRINT *, 'gamma=', gamma |
| 486 |
|
|
IF (gamma<1.E-5) THEN |
| 487 |
|
|
PRINT *, 'gamma =', gamma, '<1e-5' |
| 488 |
|
|
STOP |
| 489 |
|
|
END IF |
| 490 |
|
|
PRINT *, 'gamma=', gamma |
| 491 |
|
|
gamma = log(0.5)/log(gamma) |
| 492 |
|
|
END IF |
| 493 |
|
|
END IF |
| 494 |
guez |
3 |
|
| 495 |
guez |
20 |
alphamin = factt/taumax |
| 496 |
|
|
alphamax = factt/taumin |
| 497 |
guez |
3 |
|
| 498 |
guez |
20 |
DO j = 1, pjm |
| 499 |
|
|
DO i = 1, pim |
| 500 |
|
|
IF (type==1) THEN |
| 501 |
|
|
dxdy_ = dxdys(i, j) |
| 502 |
|
|
zlat = rlatu(j)*180./pi |
| 503 |
|
|
ELSE IF (type==2) THEN |
| 504 |
|
|
dxdy_ = dxdyu(i, j) |
| 505 |
|
|
zlat = rlatu(j)*180./pi |
| 506 |
|
|
ELSE IF (type==3) THEN |
| 507 |
|
|
dxdy_ = dxdyv(i, j) |
| 508 |
|
|
zlat = rlatv(j)*180./pi |
| 509 |
|
|
END IF |
| 510 |
|
|
IF (abs(grossismx-1.)<0.1 .OR. abs(grossismy-1.)<0.1) THEN |
| 511 |
guez |
3 |
! pour une grille reguliere, xi=xxx**0=1 -> alpha=alphamin |
| 512 |
guez |
20 |
alpha(i, j) = alphamin |
| 513 |
|
|
ELSE |
| 514 |
|
|
xi = ((dxdy_max-dxdy_)/(dxdy_max-dxdy_min))**gamma |
| 515 |
|
|
xi = min(xi, 1.) |
| 516 |
|
|
IF (lat_min_guide<=zlat .AND. zlat<=lat_max_guide) THEN |
| 517 |
|
|
alpha(i, j) = xi*alphamin + (1.-xi)*alphamax |
| 518 |
|
|
ELSE |
| 519 |
|
|
alpha(i, j) = 0. |
| 520 |
|
|
END IF |
| 521 |
|
|
END IF |
| 522 |
|
|
END DO |
| 523 |
|
|
END DO |
| 524 |
guez |
3 |
|
| 525 |
|
|
|
| 526 |
guez |
20 |
RETURN |
| 527 |
|
|
END SUBROUTINE tau2alpha |
| 528 |
guez |
3 |
|
| 529 |
guez |
20 |
END MODULE guide_m |
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