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MODULE guide_m |
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! From dyn3d/guide.F, version 1.3 2005/05/25 13:10:09 |
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! and dyn3d/guide.h, version 1.1.1.1 2004/05/19 12:53:06 |
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|
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IMPLICIT NONE |
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|
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REAL aire_min, aire_max |
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CONTAINS |
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SUBROUTINE guide(itau, ucov, vcov, teta, q, ps) |
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|
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! Author: F.Hourdin |
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|
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USE comconst, ONLY: cpp, daysec, dtvr, kappa |
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USE comgeom, ONLY: aire, rlatu, rlonv |
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USE conf_gcm_m, ONLY: day_step, iperiod |
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use conf_guide_m, only: conf_guide, guide_u, guide_v, guide_t, guide_q, & |
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ncep, ini_anal, tau_min_u, tau_max_u, tau_min_v, tau_max_v, & |
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tau_min_t, tau_max_t, tau_min_q, tau_max_q, online |
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USE dimens_m, ONLY: iim, jjm, llm |
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USE disvert_m, ONLY: ap, bp, preff, presnivs |
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USE exner_hyb_m, ONLY: exner_hyb |
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use netcdf, only: nf90_nowrite |
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use netcdf95, only: nf95_close, nf95_inq_dimid, nf95_inquire_dimension, & |
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nf95_open |
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use nr_util, only: pi |
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USE paramet_m, ONLY: iip1, ip1jmp1, jjp1, llmp1 |
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USE q_sat_m, ONLY: q_sat |
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use read_reanalyse_m, only: read_reanalyse |
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USE serre, ONLY: clat, clon |
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use tau2alpha_m, only: tau2alpha |
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use writefield_m, only: writefield |
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|
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INTEGER, INTENT(IN):: itau |
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REAL, intent(inout):: ucov(:, :, :) ! (iim + 1, jjm + 1, llm) vent covariant |
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REAL, intent(inout):: vcov(:, :, :) ! (iim + 1, jjm, llm) ! vent covariant |
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|
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REAL, intent(inout):: teta(:, :, :) ! (iim + 1, jjm + 1, llm) |
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! température potentielle |
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|
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REAL, intent(inout):: q(:, :, :) ! (iim + 1, jjm + 1, llm) |
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REAL, intent(in):: ps(:, :) ! (iim + 1, jjm + 1) pression au sol |
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|
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! Local: |
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|
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! variables dynamiques pour les réanalyses |
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|
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REAL, save:: ucovrea1(iim + 1, jjm + 1, llm), vcovrea1(iim + 1, jjm, llm) |
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! vents covariants reanalyses |
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|
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REAL, save:: tetarea1(iim + 1, jjm + 1, llm) ! temp pot reales |
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REAL, save:: qrea1(iim + 1, jjm + 1, llm) ! temp pot reales |
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|
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REAL, save:: ucovrea2(iim + 1, jjm + 1, llm), vcovrea2(iim + 1, jjm, llm) |
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! vents covariants reanalyses |
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|
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REAL, save:: tetarea2(iim + 1, jjm + 1, llm) ! temp pot reales |
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REAL, save:: qrea2(iim + 1, jjm + 1, llm) ! temp pot reales |
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REAL, save:: masserea2(ip1jmp1, llm) ! masse |
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|
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! alpha determine la part des injections de donnees a chaque etape |
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! alpha=0 signifie pas d'injection |
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! alpha=1 signifie injection totale |
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REAL, save:: alpha_q(iim + 1, jjm + 1) |
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REAL, save:: alpha_t(iim + 1, jjm + 1) |
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REAL, save:: alpha_u(iim + 1, jjm + 1), alpha_v(iim + 1, jjm) |
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|
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INTEGER, save:: step_rea, count_no_rea |
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|
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INTEGER ilon, ilat |
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REAL factt ! pas de temps entre deux appels au guidage, en fraction de jour |
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|
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INTEGER ij, l |
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INTEGER ncid, dimid |
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REAL tau |
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INTEGER, SAVE:: nlev |
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|
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! TEST SUR QSAT |
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REAL p(iim + 1, jjm + 1, llmp1) |
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real pk(iim + 1, jjm + 1, llm), pks(iim + 1, jjm + 1) |
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REAL qsat(iim + 1, jjm + 1, llm) |
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|
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!----------------------------------------------------------------------- |
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|
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!!PRINT *, 'Call sequence information: guide' |
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|
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first_call: IF (itau == 0) THEN |
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CALL conf_guide |
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|
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IF (online) THEN |
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! Constantes de temps de rappel en jour |
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|
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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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|
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factt = dtvr * iperiod / daysec |
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if (guide_u) CALL tau2alpha(3, factt, tau_min_v, tau_max_v, alpha_v) |
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if (guide_v) CALL tau2alpha(2, factt, tau_min_u, tau_max_u, alpha_u) |
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if (guide_t) CALL tau2alpha(1, factt, tau_min_t, tau_max_t, alpha_t) |
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if (guide_q) CALL tau2alpha(1, factt, tau_min_q, tau_max_q, alpha_q) |
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ELSE |
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! Cas où on force exactement par les variables analysées |
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if (guide_u) alpha_t = 1. |
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if (guide_v) alpha_u = 1. |
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if (guide_t) alpha_v = 1. |
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if (guide_q) alpha_q = 1. |
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END IF |
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|
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step_rea = 1 |
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count_no_rea = 0 |
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|
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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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call nf95_open('u.nc',Nf90_NOWRITe,ncid) |
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else if (guide_v) then |
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call nf95_open('v.nc',nf90_nowrite,ncid) |
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else if (guide_T) then |
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call nf95_open('T.nc',nf90_nowrite,ncid) |
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else |
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call nf95_open('hur.nc',nf90_nowrite, ncid) |
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end if |
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|
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IF (ncep) THEN |
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call nf95_inq_dimid(ncid, 'LEVEL', dimid) |
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ELSE |
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call nf95_inq_dimid(ncid, 'PRESSURE', dimid) |
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END IF |
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call nf95_inquire_dimension(ncid, dimid, nclen=nlev) |
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PRINT *, 'nlev', nlev |
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call nf95_close(ncid) |
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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, nlev) |
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qrea2 = max(qrea2, 0.1) |
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|
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if (guide_u) CALL writefield("alpha_u", alpha_u) |
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if (guide_t) CALL writefield("alpha_t", alpha_t) |
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END IF first_call |
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|
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! IMPORTATION DES VENTS, PRESSION ET TEMPERATURE REELS: |
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|
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! Nudging fields are given 4 times per day: |
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IF (mod(itau, day_step / 4) == 0) THEN |
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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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|
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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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CALL read_reanalyse(step_rea, ps, ucovrea2, vcovrea2, tetarea2, qrea2, & |
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masserea2, nlev) |
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qrea2 = max(qrea2, 0.1) |
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factt = dtvr * iperiod / daysec |
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|
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if (guide_u) then |
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CALL writefield("ucov", ucov) |
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CALL writefield("ucovrea2", ucovrea2) |
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end if |
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|
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if (guide_t) then |
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CALL writefield("teta", teta) |
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CALL writefield("tetarea2", tetarea2) |
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end if |
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|
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if (guide_q) then |
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CALL writefield("qrea2", qrea2) |
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CALL writefield("q", q) |
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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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|
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tau = mod(real(itau) / real(day_step / 4), 1.) |
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|
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! x_gcm = a * x_gcm + (1 - a) * x_reanalyses |
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|
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IF (guide_u) THEN |
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IF (itau == 0 .AND. ini_anal) then |
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ucov = ucovrea1 |
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else |
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forall (l = 1: llm) ucov(:, :, l) = (1. - alpha_u) * ucov(:, :, l) & |
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+ alpha_u * ((1. - tau) * ucovrea1(:, :, l) & |
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+ tau * ucovrea2(:, :, l)) |
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end IF |
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END IF |
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|
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IF (guide_t) THEN |
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IF (itau == 0 .AND. ini_anal) then |
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teta = tetarea1 |
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else |
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forall (l = 1: llm) teta(:, :, l) = (1. - alpha_t) * teta(:, :, l) & |
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+ alpha_t * ((1. - tau) * tetarea1(:, :, l) & |
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+ tau * tetarea2(:, :, l)) |
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end IF |
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END IF |
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|
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IF (guide_q) THEN |
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! Calcul de l'humidité saturante : |
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forall (l = 1: llm + 1) p(:, :, l) = ap(l) + bp(l) * ps |
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CALL exner_hyb(ps, p, pks, pk) |
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qsat = q_sat(pk * teta / cpp, preff * (pk / cpp)**(1. / kappa)) |
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|
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! humidité relative en % -> humidité spécifique |
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IF (itau == 0 .AND. ini_anal) then |
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q = qsat * qrea1 * 0.01 |
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else |
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forall (l = 1: llm) q(:, :, l) = (1. - alpha_q) * q(:, :, l) & |
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+ alpha_q * (qsat(:, :, l) * ((1. - tau) * qrea1(:, :, l) & |
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+ tau * qrea2(:, :, l)) * 0.01) |
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end IF |
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END IF |
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|
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IF (guide_v) THEN |
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IF (itau == 0 .AND. ini_anal) then |
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vcov = vcovrea1 |
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else |
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forall (l = 1: llm) vcov(:, :, l) = (1. - alpha_v) * vcov(:, :, l) & |
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+ alpha_v * ((1. - tau) * vcovrea1(:, :, l) & |
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+ tau * vcovrea2(:, :, l)) |
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end IF |
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END IF |
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|
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END SUBROUTINE guide |
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|
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END MODULE guide_m |
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