/[lmdze]/trunk/phylmd/Interface_surf/calcul_fluxs.f90

Diff of /trunk/phylmd/Interface_surf/calcul_fluxs.f90

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-revision 266 by guez,
Thu Apr 19 17:54:55 2018 UTC
+revision 308 by guez,
Tue Sep 18 15:14:40 2018 UTC
 Line 4 
 module calcul_fluxs_m
  contains
-   SUBROUTINE calcul_fluxs(dtime, tsurf, p1lay, cal, beta, coef1lay, ps, &
+   SUBROUTINE calcul_fluxs(tsurf, p1lay, cal, beta, cdragh, ps, qsurf, &
-        qsurf, radsol, dif_grnd, t1lay, q1lay, u1lay, v1lay, petAcoef, &
+        radsol, t1lay, q1lay, u1lay, v1lay, tAcoef, qAcoef, tBcoef, &
-        peqAcoef, petBcoef, peqBcoef, tsurf_new, evap, fluxlat, flux_t, &
+        qBcoef, tsurf_new, evap, fluxlat, flux_t, dflux_s, dflux_l, dif_grnd)
-        dflux_s, dflux_l)
      ! Cette routine calcule les flux en h et q à l'interface et une
      ! température de surface.
      ! L. Fairhead, April 2000
-     USE fcttre, ONLY: foede, foeew
+     ! Note that, if cal = 0, beta = 1 and dif_grnd = 0, then tsurf_new
+     ! = tsurf and qsurf = qsat.
+     ! Libraries:
      use nr_util, only: assert_eq
+     use comconst, only: dtphys
+     USE fcttre, ONLY: foede, foeew
      USE suphec_m, ONLY: rcpd, rd, retv, rlstt, rlvtt, rtt
      USE yoethf_m, ONLY: r2es, r5ies, r5les, rvtmp2
-     real, intent(IN):: dtime
      real, intent(IN):: tsurf(:) ! (knon) température de surface
      real, intent(IN):: p1lay(:) ! (knon)
-Line 27 
 contains
+Line 31 
 contains
      real, intent(IN):: cal(:) ! (knon) capacité calorifique du sol
      real, intent(IN):: beta(:) ! (knon) évaporation réelle
-     real, intent(IN):: coef1lay(:) ! (knon) coefficient d'échange
+     real, intent(IN):: cdragh(:) ! (knon) coefficient d'échange
      real, intent(IN):: ps(:) ! (knon) pression au sol
      real, intent(OUT):: qsurf(:) ! (knon) humidité de l'air au-dessus du sol
      real, intent(IN):: radsol(:) ! (knon)
      ! rayonnement net au sol (longwave + shortwave)
-     real, intent(IN):: dif_grnd(:) ! (knon)
+     real, intent(IN):: dif_grnd ! coefficient de diffusion vers le sol profond
-     ! coefficient de diffusion vers le sol profond
      real, intent(IN):: t1lay(:), q1lay(:), u1lay(:), v1lay(:) ! (knon)
-     real, intent(IN):: petAcoef(:), peqAcoef(:) ! (knon)
+     real, intent(IN):: tAcoef(:), qAcoef(:) ! (knon)
      ! coefficients A de la résolution de la couche limite pour T et q
-     real, intent(IN):: petBcoef(:), peqBcoef(:) ! (knon)
+     real, intent(IN):: tBcoef(:), qBcoef(:) ! (knon)
      ! coefficients B de la résolution de la couche limite pour t et q
      real, intent(OUT):: tsurf_new(:) ! (knon) température au sol
-Line 57 
 contains
+Line 59 
 contains
      ! Local:
      integer i
-     integer knon ! nombre de points a traiter
+     integer knon ! nombre de points \`a traiter
      real, dimension(size(ps)):: mh, oh, mq, nq, oq, dq_s_dt, coef ! (knon)
      real qsat(size(ps)) ! (knon) mass fraction
      real sl(size(ps)) ! (knon) chaleur latente d'évaporation ou de sublimation
      logical delta
      real zcor
      real, parameter:: t_grnd = 271.35
+     real, parameter:: min_wind_speed = 1. ! in m s-1
      !---------------------------------------------------------------------
-     knon = assert_eq((/size(tsurf), size(p1lay), size(cal), size(beta), &
+     knon = assert_eq([size(tsurf), size(p1lay), size(cal), size(beta), &
-          size(coef1lay), size(ps), size(qsurf), size(radsol), size(dif_grnd), &
+          size(cdragh), size(ps), size(qsurf), size(radsol), size(t1lay), &
-          size(t1lay), size(q1lay), size(u1lay), size(v1lay), size(petAcoef), &
+          size(q1lay), size(u1lay), size(v1lay), size(tAcoef), size(qAcoef), &
-          size(peqAcoef), size(petBcoef), size(peqBcoef), size(tsurf_new), &
+          size(tBcoef), size(qBcoef), size(tsurf_new), size(evap), &
-          size(evap), size(fluxlat), size(flux_t), size(dflux_s), &
+          size(fluxlat), size(flux_t), size(dflux_s), size(dflux_l)], &
-          size(dflux_l)/), "calcul_fluxs knon")
+          "calcul_fluxs knon")
      ! Traitement de l'humidité du sol
-Line 86 
 contains
+Line 89 
 contains
              qsat(i), zcor) / RLVTT
      ENDDO
-     coef = coef1lay * (1. + SQRT(u1lay**2 + v1lay**2)) * p1lay / (RD * t1lay)
+     coef = cdragh * (min_wind_speed + SQRT(u1lay**2 + v1lay**2)) * p1lay &
+          / (RD * t1lay)
      sl = merge(RLSTT, RLVTT, tsurf < RTT)
      ! Q
-     oq = 1. - beta * coef * peqBcoef * dtime
+     oq = 1. - beta * coef * qBcoef * dtphys
-     mq = beta * coef * (peqAcoef - qsat + dq_s_dt * tsurf) / oq
+     mq = beta * coef * (qAcoef - qsat + dq_s_dt * tsurf) / oq
-     nq = beta * coef * (- 1. * dq_s_dt) / oq
+     nq = - beta * coef * dq_s_dt / oq
      ! H
-     oh = 1. - (coef * petBcoef * dtime)
+     oh = 1. - coef * tBcoef * dtphys
-     mh = coef * petAcoef / oh
+     mh = coef * tAcoef / oh
-     dflux_s = - (coef * RCPD)/ oh
+     dflux_s = - coef * RCPD / oh
-     ! Tsurface
+     tsurf_new = (tsurf + cal / RCPD * dtphys * (radsol + mh + sl * mq) &
-     tsurf_new = (tsurf + cal / RCPD * dtime * (radsol + mh + sl * mq) &
+          + dif_grnd * t_grnd * dtphys) / (1. - dtphys * cal / RCPD * (dflux_s &
-          + dif_grnd * t_grnd * dtime) / (1. - dtime * cal / RCPD * (dflux_s &
+          + sl * nq) + dtphys * dif_grnd)
-          + sl * nq) + dtime * dif_grnd)
      evap = - mq - nq * tsurf_new
      fluxlat = - evap * sl
      flux_t = mh + dflux_s * tsurf_new
      dflux_l = sl * nq
+     qsurf = (qAcoef - qBcoef * evap * dtphys) * (1. - beta) + beta * (qsat &
-     ! Nouvelle valeur de l'humidité au dessus du sol :
-     qsurf = (peqAcoef - peqBcoef * evap * dtime) * (1. - beta) + beta * (qsat &
           + dq_s_dt * (tsurf_new - tsurf))
    END SUBROUTINE calcul_fluxs

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-Removed from v.266
+Added in v.308

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