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module leapfrog_m |
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IMPLICIT NONE |
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|
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contains |
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SUBROUTINE leapfrog(ucov, vcov, teta, ps, masse, phis, q) |
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|
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! From dyn3d/leapfrog.F, version 1.6, 2005/04/13 08:58:34 revision 616 |
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! Authors: P. Le Van, L. Fairhead, F. Hourdin |
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|
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! Intégration temporelle du modèle : Matsuno-leapfrog scheme. |
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|
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use addfi_m, only: addfi |
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use bilan_dyn_m, only: bilan_dyn |
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use caladvtrac_m, only: caladvtrac |
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use caldyn_m, only: caldyn |
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USE calfis_m, ONLY: calfis |
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USE comconst, ONLY: dtvr |
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USE comgeom, ONLY: aire_2d, apoln, apols |
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use covcont_m, only: covcont |
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USE disvert_m, ONLY: ap, bp |
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USE conf_gcm_m, ONLY: day_step, iconser, iperiod, iphysiq, nday, & |
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iflag_phys, iecri |
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USE conf_guide_m, ONLY: ok_guide |
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USE dimens_m, ONLY: iim, jjm, llm, nqmx |
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use dissip_m, only: dissip |
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USE dynetat0_m, ONLY: day_ini |
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use dynredem1_m, only: dynredem1 |
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use enercin_m, only: enercin |
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USE exner_hyb_m, ONLY: exner_hyb |
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use filtreg_scal_m, only: filtreg_scal |
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use geopot_m, only: geopot |
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USE guide_m, ONLY: guide |
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use inidissip_m, only: idissip |
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use integrd_m, only: integrd |
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use nr_util, only: assert |
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USE temps, ONLY: itau_dyn |
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use writedynav_m, only: writedynav |
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use writehist_m, only: writehist |
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|
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! Variables dynamiques: |
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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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! potential temperature |
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|
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REAL, intent(inout):: ps(:, :) ! (iim + 1, jjm + 1) pression au sol, en Pa |
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REAL, intent(inout):: masse(:, :, :) ! (iim + 1, jjm + 1, llm) masse d'air |
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REAL, intent(in):: phis(:, :) ! (iim + 1, jjm + 1) surface geopotential |
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|
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REAL, intent(inout):: q(:, :, :, :) ! (iim + 1, jjm + 1, llm, nqmx) |
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! mass fractions of advected fields |
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|
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! Local: |
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|
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! Variables dynamiques: |
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|
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REAL pks(iim + 1, jjm + 1) ! exner au sol |
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REAL pk(iim + 1, jjm + 1, llm) ! exner au milieu des couches |
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REAL pkf(iim + 1, jjm + 1, llm) ! exner filtr\'e au milieu des couches |
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REAL phi(iim + 1, jjm + 1, llm) ! geopotential |
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REAL w(iim + 1, jjm + 1, llm) ! vitesse verticale |
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|
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! Variables dynamiques intermediaire pour le transport |
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! Flux de masse : |
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REAL pbaru(iim + 1, jjm + 1, llm), pbarv(iim + 1, jjm, llm) |
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|
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! Variables dynamiques au pas - 1 |
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REAL vcovm1(iim + 1, jjm, llm), ucovm1(iim + 1, jjm + 1, llm) |
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REAL tetam1(iim + 1, jjm + 1, llm), psm1(iim + 1, jjm + 1) |
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REAL massem1(iim + 1, jjm + 1, llm) |
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|
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! Tendances dynamiques |
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REAL dv((iim + 1) * jjm, llm), dudyn(iim + 1, jjm + 1, llm) |
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REAL dteta(iim + 1, jjm + 1, llm) |
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real dp(iim + 1, jjm + 1) |
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|
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! Tendances de la dissipation : |
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REAL dvdis(iim + 1, jjm, llm), dudis(iim + 1, jjm + 1, llm) |
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REAL dtetadis(iim + 1, jjm + 1, llm) |
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|
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! Tendances physiques |
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REAL dvfi(iim + 1, jjm, llm), dufi(iim + 1, jjm + 1, llm) |
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REAL dtetafi(iim + 1, jjm + 1, llm), dqfi(iim + 1, jjm + 1, llm, nqmx) |
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|
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! Variables pour le fichier histoire |
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INTEGER itau ! index of the time step of the dynamics, starts at 0 |
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INTEGER itaufin |
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INTEGER l |
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|
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! Variables test conservation \'energie |
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REAL ecin(iim + 1, jjm + 1, llm), ecin0(iim + 1, jjm + 1, llm) |
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|
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REAL vcont((iim + 1) * jjm, llm), ucont((iim + 1) * (jjm + 1), llm) |
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logical leapf |
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real dt ! time step, in s |
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|
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REAL p3d(iim + 1, jjm + 1, llm + 1) ! pressure at layer interfaces, in Pa |
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! ("p3d(i, j, l)" is at longitude "rlonv(i)", latitude "rlatu(j)", |
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! for interface "l") |
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|
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!--------------------------------------------------- |
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|
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print *, "Call sequence information: leapfrog" |
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call assert(shape(ucov) == (/iim + 1, jjm + 1, llm/), "leapfrog") |
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|
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itaufin = nday * day_step |
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! "day_step" is a multiple of "iperiod", therefore so is "itaufin". |
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|
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! On initialise la pression et la fonction d'Exner : |
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forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps |
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CALL exner_hyb(ps, p3d, pks, pk) |
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pkf = pk |
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CALL filtreg_scal(pkf, direct = .true., intensive = .true.) |
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|
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time_integration: do itau = 0, itaufin - 1 |
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leapf = mod(itau, iperiod) /= 0 |
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if (leapf) then |
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dt = 2 * dtvr |
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else |
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! Matsuno |
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dt = dtvr |
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if (ok_guide) call guide(itau, ucov, vcov, teta, q(:, :, :, 1), ps) |
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vcovm1 = vcov |
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ucovm1 = ucov |
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tetam1 = teta |
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massem1 = masse |
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psm1 = ps |
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end if |
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|
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! Calcul des tendances dynamiques: |
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CALL geopot(teta, pk, pks, phis, phi) |
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CALL caldyn(itau, ucov, vcov, teta, ps, masse, pk, pkf, phis, phi, & |
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dudyn, dv, dteta, dp, w, pbaru, pbarv, & |
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conser = MOD(itau, iconser) == 0) |
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|
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CALL caladvtrac(q, pbaru, pbarv, p3d, masse, teta, pk) |
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! Int\'egrations dynamique et traceurs: |
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CALL integrd(vcovm1, ucovm1, tetam1, psm1, massem1, dv, dudyn, dteta, & |
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dp, vcov, ucov, teta, q(:, :, :, :2), ps, masse, dt, leapf) |
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forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps |
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CALL exner_hyb(ps, p3d, pks, pk) |
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pkf = pk |
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CALL filtreg_scal(pkf, direct = .true., intensive = .true.) |
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|
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if (.not. leapf) then |
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! Matsuno backward |
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! Calcul des tendances dynamiques: |
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CALL geopot(teta, pk, pks, phis, phi) |
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CALL caldyn(itau + 1, ucov, vcov, teta, ps, masse, pk, pkf, phis, & |
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phi, dudyn, dv, dteta, dp, w, pbaru, pbarv, conser = .false.) |
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|
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! integrations dynamique et traceurs: |
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CALL integrd(vcovm1, ucovm1, tetam1, psm1, massem1, dv, dudyn, & |
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dteta, dp, vcov, ucov, teta, q(:, :, :, :2), ps, masse, dtvr, & |
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leapf=.false.) |
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|
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forall (l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps |
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CALL exner_hyb(ps, p3d, pks, pk) |
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pkf = pk |
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CALL filtreg_scal(pkf, direct = .true., intensive = .true.) |
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end if |
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|
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IF (MOD(itau + 1, iphysiq) == 0 .AND. iflag_phys) THEN |
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CALL calfis(ucov, vcov, teta, q, p3d, pk, phis, phi, w, dufi, dvfi, & |
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dtetafi, dqfi, dayvrai = itau / day_step + day_ini, & |
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time = REAL(mod(itau, day_step)) / day_step, & |
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lafin = itau + 1 == itaufin) |
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|
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CALL addfi(ucov, vcov, teta, q, dufi, dvfi, dtetafi, dqfi) |
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ENDIF |
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|
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IF (MOD(itau + 1, idissip) == 0) THEN |
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! Dissipation horizontale et verticale des petites \'echelles |
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|
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! calcul de l'\'energie cin\'etique avant dissipation |
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call covcont(llm, ucov, vcov, ucont, vcont) |
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call enercin(vcov, ucov, vcont, ucont, ecin0) |
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|
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! dissipation |
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CALL dissip(vcov, ucov, teta, p3d, dvdis, dudis, dtetadis) |
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ucov = ucov + dudis |
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vcov = vcov + dvdis |
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|
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! On ajoute la tendance due \`a la transformation \'energie |
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! cin\'etique en \'energie thermique par la dissipation |
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call covcont(llm, ucov, vcov, ucont, vcont) |
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call enercin(vcov, ucov, vcont, ucont, ecin) |
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dtetadis = dtetadis + (ecin0 - ecin) / pk |
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teta = teta + dtetadis |
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|
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! Calcul de la valeur moyenne aux p\^oles : |
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forall (l = 1: llm) |
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teta(:, 1, l) = SUM(aire_2d(:iim, 1) * teta(:iim, 1, l)) & |
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/ apoln |
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teta(:, jjm + 1, l) = SUM(aire_2d(:iim, jjm + 1) & |
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* teta(:iim, jjm + 1, l)) / apols |
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END forall |
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END IF |
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|
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IF (MOD(itau + 1, iperiod) == 0) THEN |
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! \'Ecriture du fichier histoire moyenne: |
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CALL writedynav(vcov, ucov, teta, pk, phi, q, masse, ps, phis, & |
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time = itau + 1) |
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call bilan_dyn(ps, masse, pk, pbaru, pbarv, teta, phi, ucov, vcov, & |
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q(:, :, :, 1)) |
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ENDIF |
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|
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IF (MOD(itau + 1, iecri * day_step) == 0) THEN |
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CALL geopot(teta, pk, pks, phis, phi) |
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CALL writehist(itau, vcov, ucov, teta, phi, masse, ps) |
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END IF |
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end do time_integration |
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|
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CALL dynredem1(vcov, ucov, teta, q, masse, ps, itau = itau_dyn + itaufin) |
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|
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! Calcul des tendances dynamiques: |
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CALL geopot(teta, pk, pks, phis, phi) |
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CALL caldyn(itaufin, ucov, vcov, teta, ps, masse, pk, pkf, phis, phi, & |
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dudyn, dv, dteta, dp, w, pbaru, pbarv, & |
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conser = MOD(itaufin, iconser) == 0) |
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|
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END SUBROUTINE leapfrog |
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|
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end module leapfrog_m |
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