Sources/phylmd/phyetat0.f

module phyetat0_m

  use dimphy, only: klon

  IMPLICIT none

  REAL, save:: rlat(klon), rlon(klon) ! latitude and longitude, in degrees

  private klon

contains

  SUBROUTINE phyetat0(pctsrf, tsol, tsoil, tslab, seaice, qsurf, qsol, &
       snow, albe, alblw, evap, rain_fall, snow_fall, solsw, sollw, fder, &
       radsol, frugs, agesno, zmea, zstd, zsig, zgam, zthe, zpic, zval, &
       t_ancien, q_ancien, ancien_ok, rnebcon, ratqs, clwcon, run_off_lic_0, &
       sig1, w01)

    ! From phylmd/phyetat0.F, version 1.4 2005/06/03 10:03:07
    ! Author: Z.X. Li (LMD/CNRS)
    ! Date: 1993/08/18
    ! Objet : lecture de l'état initial pour la physique

    use dimphy, only: zmasq, klev
    USE dimsoil, ONLY : nsoilmx
    USE indicesol, ONLY : epsfra, is_lic, is_oce, is_sic, is_ter, nbsrf
    use netcdf, only: nf90_global, nf90_inq_varid, NF90_NOERR, &
         NF90_NOWRITE
    use netcdf95, only: nf95_close, nf95_get_att, nf95_get_var, &
         nf95_inq_varid, nf95_inquire_variable, NF95_OPEN
    USE temps, ONLY : itau_phy

    REAL pctsrf(klon, nbsrf)
    REAL tsol(klon, nbsrf)
    REAL tsoil(klon, nsoilmx, nbsrf)
    REAL tslab(klon), seaice(klon)
    REAL qsurf(klon, nbsrf)
    REAL, intent(out):: qsol(:) ! (klon)
    REAL snow(klon, nbsrf)
    REAL albe(klon, nbsrf)
    REAL alblw(klon, nbsrf)
    REAL evap(klon, nbsrf)
    REAL, intent(out):: rain_fall(klon)
    REAL snow_fall(klon)
    real solsw(klon)
    REAL, intent(out):: sollw(klon)
    real fder(klon)
    REAL radsol(klon)
    REAL frugs(klon, nbsrf)
    REAL agesno(klon, nbsrf)
    REAL zmea(klon)
    REAL, intent(out):: zstd(klon)
    REAL, intent(out):: zsig(klon)
    REAL zgam(klon)
    REAL zthe(klon)
    REAL zpic(klon)
    REAL zval(klon)
    REAL t_ancien(klon, klev), q_ancien(klon, klev)
    LOGICAL, intent(out):: ancien_ok
    real rnebcon(klon, klev), ratqs(klon, klev), clwcon(klon, klev)
    REAL run_off_lic_0(klon)
    real, intent(out):: sig1(klon, klev) ! section adiabatic updraft

    real, intent(out):: w01(klon, klev) 
    ! vertical velocity within adiabatic updraft

    ! Local:
    REAL fractint(klon)
    REAL xmin, xmax
    INTEGER ncid, varid, ndims
    INTEGER ierr, i, nsrf, isoil 
    CHARACTER(len=7) str7
    CHARACTER(len=2) str2

    !---------------------------------------------------------------

    print *, "Call sequence information: phyetat0"

    ! Fichier contenant l'état initial :
    call NF95_OPEN("startphy.nc", NF90_NOWRITE, ncid)

    call nf95_get_att(ncid, nf90_global, "itau_phy", itau_phy)

    ! Lecture des latitudes (coordonnees):

    call NF95_INQ_VARID(ncid, "latitude", varid)
    call NF95_GET_VAR(ncid, varid, rlat)

    ! Lecture des longitudes (coordonnees):

    call NF95_INQ_VARID(ncid, "longitude", varid)
    call NF95_GET_VAR(ncid, varid, rlon)

    ! Lecture du masque terre mer

    call NF95_INQ_VARID(ncid, "masque", varid)
    call nf95_get_var(ncid, varid, zmasq)

    ! Lecture des fractions pour chaque sous-surface

    ! initialisation des sous-surfaces

    pctsrf = 0.

    ! fraction de terre

    ierr = NF90_INQ_VARID(ncid, "FTER", varid)
    IF (ierr == NF90_NOERR) THEN
       call nf95_get_var(ncid, varid, pctsrf(:, is_ter))
    else
       PRINT *, 'phyetat0: Le champ <FTER> est absent'
    ENDIF

    ! fraction de glace de terre

    ierr = NF90_INQ_VARID(ncid, "FLIC", varid)
    IF (ierr == NF90_NOERR) THEN
       call nf95_get_var(ncid, varid, pctsrf(:, is_lic))
    else
       PRINT *, 'phyetat0: Le champ <FLIC> est absent'
    ENDIF

    ! fraction d'ocean

    ierr = NF90_INQ_VARID(ncid, "FOCE", varid)
    IF (ierr == NF90_NOERR) THEN
       call nf95_get_var(ncid, varid, pctsrf(:, is_oce))
    else
       PRINT *, 'phyetat0: Le champ <FOCE> est absent'
    ENDIF

    ! fraction glace de mer

    ierr = NF90_INQ_VARID(ncid, "FSIC", varid)
    IF (ierr == NF90_NOERR) THEN
       call nf95_get_var(ncid, varid, pctsrf(:, is_sic))
    else
       PRINT *, 'phyetat0: Le champ <FSIC> est absent'
    ENDIF

    ! Verification de l'adequation entre le masque et les sous-surfaces

    fractint = pctsrf(:, is_ter) + pctsrf(:, is_lic)
    DO i = 1 , klon
       IF ( abs(fractint(i) - zmasq(i) ) > EPSFRA ) THEN
          WRITE(*, *) 'phyetat0: attention fraction terre pas ', &
               'coherente ', i, zmasq(i), pctsrf(i, is_ter) &
               , pctsrf(i, is_lic)
       ENDIF
    END DO
    fractint = pctsrf(:, is_oce) + pctsrf(:, is_sic)
    DO i = 1 , klon
       IF ( abs( fractint(i) - (1. - zmasq(i))) > EPSFRA ) THEN
          WRITE(*, *) 'phyetat0 attention fraction ocean pas ', &
               'coherente ', i, zmasq(i) , pctsrf(i, is_oce) &
               , pctsrf(i, is_sic)
       ENDIF
    END DO

    ! Lecture des temperatures du sol:
    call NF95_INQ_VARID(ncid, "TS", varid)
    call nf95_inquire_variable(ncid, varid, ndims = ndims)
    if (ndims == 2) then
       call NF95_GET_VAR(ncid, varid, tsol)
    else
       print *, "Found only one surface type for soil temperature."
       call nf95_get_var(ncid, varid, tsol(:, 1))
       tsol(:, 2:nbsrf) = spread(tsol(:, 1), dim = 2, ncopies = nbsrf - 1)
    end if      

   ! Lecture des temperatures du sol profond:

    DO nsrf = 1, nbsrf
       DO isoil=1, nsoilmx
          IF (isoil > 99 .AND. nsrf > 99) THEN
             PRINT *, "Trop de couches ou sous-mailles"
             stop 1
          ENDIF
          WRITE(str7, '(i2.2, "srf", i2.2)') isoil, nsrf
          ierr = NF90_INQ_VARID(ncid, 'Tsoil'//str7, varid)
          IF (ierr /= NF90_NOERR) THEN
             PRINT *, "phyetat0: Le champ <Tsoil"//str7//"> est absent"
             PRINT *, " Il prend donc la valeur de surface"
             DO i=1, klon
                tsoil(i, isoil, nsrf)=tsol(i, nsrf)
             ENDDO
          ELSE
             call NF95_GET_VAR(ncid, varid, tsoil(:, isoil, nsrf))
          ENDIF
       ENDDO
    ENDDO

    !IM "slab" ocean 
    ! Lecture de tslab (pour slab ocean seulement): 
    tslab = 0.
    seaice = 0.

    ! Lecture de l'humidite de l'air juste au dessus du sol:

    ierr = NF90_INQ_VARID(ncid, "QS", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <QS> est absent'
       PRINT *, ' Mais je vais essayer de lire QS**'
       DO nsrf = 1, nbsrf
          IF (nsrf > 99) THEN
             PRINT *, "Trop de sous-mailles"
             stop 1
          ENDIF
          WRITE(str2, '(i2.2)') nsrf
          call NF95_INQ_VARID(ncid, "QS"//str2, varid)
          call NF95_GET_VAR(ncid, varid, qsurf(:, nsrf))
          xmin = 1.0E+20
          xmax = -1.0E+20
          DO i = 1, klon
             xmin = MIN(qsurf(i, nsrf), xmin)
             xmax = MAX(qsurf(i, nsrf), xmax)
          ENDDO
          PRINT *, 'Humidite pres du sol QS**:', nsrf, xmin, xmax
       ENDDO
    ELSE
       PRINT *, 'phyetat0: Le champ <QS> est present'
       PRINT *, ' J ignore donc les autres humidites QS**'
       call nf95_get_var(ncid, varid, qsurf(:, 1))
       xmin = 1.0E+20
       xmax = -1.0E+20
       DO i = 1, klon
          xmin = MIN(qsurf(i, 1), xmin)
          xmax = MAX(qsurf(i, 1), xmax)
       ENDDO
       PRINT *, 'Humidite pres du sol <QS>', xmin, xmax
       DO nsrf = 2, nbsrf
          DO i = 1, klon
             qsurf(i, nsrf) = qsurf(i, 1)
          ENDDO
       ENDDO
    ENDIF

    ! Eau dans le sol (pour le modele de sol "bucket")

    ierr = NF90_INQ_VARID(ncid, "QSOL", varid)
    IF (ierr == NF90_NOERR) THEN
       call nf95_get_var(ncid, varid, qsol)
    else
       PRINT *, 'phyetat0: Le champ <QSOL> est absent'
       PRINT *, ' Valeur par defaut nulle'
       qsol = 0.
    ENDIF

    ! Lecture de neige au sol:

    ierr = NF90_INQ_VARID(ncid, "SNOW", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <SNOW> est absent'
       PRINT *, ' Mais je vais essayer de lire SNOW**'
       DO nsrf = 1, nbsrf
          IF (nsrf > 99) THEN
             PRINT *, "Trop de sous-mailles"
             stop 1
          ENDIF
          WRITE(str2, '(i2.2)') nsrf
          call NF95_INQ_VARID(ncid, "SNOW"//str2, varid)
          call NF95_GET_VAR(ncid, varid, snow(:, nsrf))
          xmin = 1.0E+20
          xmax = -1.0E+20
          DO i = 1, klon
             xmin = MIN(snow(i, nsrf), xmin)
             xmax = MAX(snow(i, nsrf), xmax)
          ENDDO
          PRINT *, 'Neige du sol SNOW**:', nsrf, xmin, xmax
       ENDDO
    ELSE
       PRINT *, 'phyetat0: Le champ <SNOW> est present'
       PRINT *, ' J ignore donc les autres neiges SNOW**'
       call nf95_get_var(ncid, varid, snow(:, 1))
       xmin = 1.0E+20
       xmax = -1.0E+20
       DO i = 1, klon
          xmin = MIN(snow(i, 1), xmin)
          xmax = MAX(snow(i, 1), xmax)
       ENDDO
       PRINT *, 'Neige du sol <SNOW>', xmin, xmax
       DO nsrf = 2, nbsrf
          DO i = 1, klon
             snow(i, nsrf) = snow(i, 1)
          ENDDO
       ENDDO
    ENDIF

    ! Lecture de albedo au sol:

    ierr = NF90_INQ_VARID(ncid, "ALBE", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <ALBE> est absent'
       PRINT *, ' Mais je vais essayer de lire ALBE**'
       DO nsrf = 1, nbsrf
          IF (nsrf > 99) THEN
             PRINT *, "Trop de sous-mailles"
             stop 1
          ENDIF
          WRITE(str2, '(i2.2)') nsrf
          call NF95_INQ_VARID(ncid, "ALBE"//str2, varid)
          call NF95_GET_VAR(ncid, varid, albe(:, nsrf))
          xmin = 1.0E+20
          xmax = -1.0E+20
          DO i = 1, klon
             xmin = MIN(albe(i, nsrf), xmin)
             xmax = MAX(albe(i, nsrf), xmax)
          ENDDO
          PRINT *, 'Albedo du sol ALBE**:', nsrf, xmin, xmax
       ENDDO
    ELSE
       PRINT *, 'phyetat0: Le champ <ALBE> est present'
       PRINT *, ' J ignore donc les autres ALBE**'
       call nf95_get_var(ncid, varid, albe(:, 1))
       xmin = 1.0E+20
       xmax = -1.0E+20
       DO i = 1, klon
          xmin = MIN(albe(i, 1), xmin)
          xmax = MAX(albe(i, 1), xmax)
       ENDDO
       PRINT *, 'Neige du sol <ALBE>', xmin, xmax
       DO nsrf = 2, nbsrf
          DO i = 1, klon
             albe(i, nsrf) = albe(i, 1)
          ENDDO
       ENDDO
    ENDIF

    ! Lecture de albedo au sol LW:

    ierr = NF90_INQ_VARID(ncid, "ALBLW", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <ALBLW> est absent'
       ! PRINT *, ' Mais je vais essayer de lire ALBLW**'
       PRINT *, ' Mais je vais prendre ALBE**'
       DO nsrf = 1, nbsrf
          DO i = 1, klon
             alblw(i, nsrf) = albe(i, nsrf)
          ENDDO
       ENDDO
    ELSE
       PRINT *, 'phyetat0: Le champ <ALBLW> est present'
       PRINT *, ' J ignore donc les autres ALBLW**'
       call nf95_get_var(ncid, varid, alblw(:, 1))
       xmin = 1.0E+20
       xmax = -1.0E+20
       DO i = 1, klon
          xmin = MIN(alblw(i, 1), xmin)
          xmax = MAX(alblw(i, 1), xmax)
       ENDDO
       PRINT *, 'Neige du sol <ALBLW>', xmin, xmax
       DO nsrf = 2, nbsrf
          DO i = 1, klon
             alblw(i, nsrf) = alblw(i, 1)
          ENDDO
       ENDDO
    ENDIF

    ! Lecture de evaporation: 

    ierr = NF90_INQ_VARID(ncid, "EVAP", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <EVAP> est absent'
       PRINT *, ' Mais je vais essayer de lire EVAP**'
       DO nsrf = 1, nbsrf
          IF (nsrf > 99) THEN
             PRINT *, "Trop de sous-mailles"
             stop 1
          ENDIF
          WRITE(str2, '(i2.2)') nsrf
          call NF95_INQ_VARID(ncid, "EVAP"//str2, varid)
          call NF95_GET_VAR(ncid, varid, evap(:, nsrf))
          xmin = 1.0E+20
          xmax = -1.0E+20
          DO i = 1, klon
             xmin = MIN(evap(i, nsrf), xmin)
             xmax = MAX(evap(i, nsrf), xmax)
          ENDDO
          PRINT *, 'evap du sol EVAP**:', nsrf, xmin, xmax
       ENDDO
    ELSE
       PRINT *, 'phyetat0: Le champ <EVAP> est present'
       PRINT *, ' J ignore donc les autres EVAP**'
       call nf95_get_var(ncid, varid, evap(:, 1))
       xmin = 1.0E+20
       xmax = -1.0E+20
       DO i = 1, klon
          xmin = MIN(evap(i, 1), xmin)
          xmax = MAX(evap(i, 1), xmax)
       ENDDO
       PRINT *, 'Evap du sol <EVAP>', xmin, xmax
       DO nsrf = 2, nbsrf
          DO i = 1, klon
             evap(i, nsrf) = evap(i, 1)
          ENDDO
       ENDDO
    ENDIF

    ! Lecture precipitation liquide:

    call NF95_INQ_VARID(ncid, "rain_f", varid)
    call NF95_GET_VAR(ncid, varid, rain_fall)

    ! Lecture precipitation solide:

    call NF95_INQ_VARID(ncid, "snow_f", varid)
    call NF95_GET_VAR(ncid, varid, snow_fall)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(snow_fall(i), xmin)
       xmax = MAX(snow_fall(i), xmax)
    ENDDO
    PRINT *, 'Precipitation solide snow_f:', xmin, xmax

    ! Lecture rayonnement solaire au sol:

    ierr = NF90_INQ_VARID(ncid, "solsw", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <solsw> est absent'
       PRINT *, 'mis a zero'
       solsw = 0.
    ELSE
       call nf95_get_var(ncid, varid, solsw)
    ENDIF
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(solsw(i), xmin)
       xmax = MAX(solsw(i), xmax)
    ENDDO
    PRINT *, 'Rayonnement solaire au sol solsw:', xmin, xmax

    ! Lecture rayonnement IF au sol:

    ierr = NF90_INQ_VARID(ncid, "sollw", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <sollw> est absent'
       PRINT *, 'mis a zero'
       sollw = 0.
    ELSE
       call nf95_get_var(ncid, varid, sollw)
    ENDIF
    PRINT *, 'Rayonnement IF au sol sollw:', minval(sollw), maxval(sollw)

    ! Lecture derive des flux:

    ierr = NF90_INQ_VARID(ncid, "fder", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <fder> est absent'
       PRINT *, 'mis a zero'
       fder = 0.
    ELSE
       call nf95_get_var(ncid, varid, fder)
    ENDIF
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(fder(i), xmin)
       xmax = MAX(fder(i), xmax)
    ENDDO
    PRINT *, 'Derive des flux fder:', xmin, xmax

    ! Lecture du rayonnement net au sol:

    call NF95_INQ_VARID(ncid, "RADS", varid)
    call NF95_GET_VAR(ncid, varid, radsol)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(radsol(i), xmin)
       xmax = MAX(radsol(i), xmax)
    ENDDO
    PRINT *, 'Rayonnement net au sol radsol:', xmin, xmax

    ! Lecture de la longueur de rugosite 

    ierr = NF90_INQ_VARID(ncid, "RUG", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <RUG> est absent'
       PRINT *, ' Mais je vais essayer de lire RUG**'
       DO nsrf = 1, nbsrf
          IF (nsrf > 99) THEN
             PRINT *, "Trop de sous-mailles"
             stop 1
          ENDIF
          WRITE(str2, '(i2.2)') nsrf
          call NF95_INQ_VARID(ncid, "RUG"//str2, varid)
          call NF95_GET_VAR(ncid, varid, frugs(:, nsrf))
          xmin = 1.0E+20
          xmax = -1.0E+20
          DO i = 1, klon
             xmin = MIN(frugs(i, nsrf), xmin)
             xmax = MAX(frugs(i, nsrf), xmax)
          ENDDO
          PRINT *, 'rugosite du sol RUG**:', nsrf, xmin, xmax
       ENDDO
    ELSE
       PRINT *, 'phyetat0: Le champ <RUG> est present'
       PRINT *, ' J ignore donc les autres RUG**'
       call nf95_get_var(ncid, varid, frugs(:, 1))
       xmin = 1.0E+20
       xmax = -1.0E+20
       DO i = 1, klon
          xmin = MIN(frugs(i, 1), xmin)
          xmax = MAX(frugs(i, 1), xmax)
       ENDDO
       PRINT *, 'rugosite <RUG>', xmin, xmax
       DO nsrf = 2, nbsrf
          DO i = 1, klon
             frugs(i, nsrf) = frugs(i, 1)
          ENDDO
       ENDDO
    ENDIF

    ! Lecture de l'age de la neige:

    ierr = NF90_INQ_VARID(ncid, "AGESNO", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, 'phyetat0: Le champ <AGESNO> est absent'
       PRINT *, ' Mais je vais essayer de lire AGESNO**'
       DO nsrf = 1, nbsrf
          IF (nsrf > 99) THEN
             PRINT *, "Trop de sous-mailles"
             stop 1
          ENDIF
          WRITE(str2, '(i2.2)') nsrf
          ierr = NF90_INQ_VARID(ncid, "AGESNO"//str2, varid)
          IF (ierr /= NF90_NOERR) THEN
             PRINT *, "phyetat0: Le champ <AGESNO"//str2//"> est absent"
             agesno = 50.0
          ENDIF
          call NF95_GET_VAR(ncid, varid, agesno(:, nsrf))
          xmin = 1.0E+20
          xmax = -1.0E+20
          DO i = 1, klon
             xmin = MIN(agesno(i, nsrf), xmin)
             xmax = MAX(agesno(i, nsrf), xmax)
          ENDDO
          PRINT *, 'Age de la neige AGESNO**:', nsrf, xmin, xmax
       ENDDO
    ELSE
       PRINT *, 'phyetat0: Le champ <AGESNO> est present'
       PRINT *, ' J ignore donc les autres AGESNO**'
       call nf95_get_var(ncid, varid, agesno(:, 1))
       xmin = 1.0E+20
       xmax = -1.0E+20
       DO i = 1, klon
          xmin = MIN(agesno(i, 1), xmin)
          xmax = MAX(agesno(i, 1), xmax)
       ENDDO
       PRINT *, 'Age de la neige <AGESNO>', xmin, xmax
       DO nsrf = 2, nbsrf
          DO i = 1, klon
             agesno(i, nsrf) = agesno(i, 1)
          ENDDO
       ENDDO
    ENDIF

    call NF95_INQ_VARID(ncid, "ZMEA", varid)
    call NF95_GET_VAR(ncid, varid, zmea)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(zmea(i), xmin)
       xmax = MAX(zmea(i), xmax)
    ENDDO
    PRINT *, 'OROGRAPHIE SOUS-MAILLE zmea:', xmin, xmax

    call NF95_INQ_VARID(ncid, "ZSTD", varid)
    call NF95_GET_VAR(ncid, varid, zstd)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(zstd(i), xmin)
       xmax = MAX(zstd(i), xmax)
    ENDDO
    PRINT *, 'OROGRAPHIE SOUS-MAILLE zstd:', xmin, xmax

    call NF95_INQ_VARID(ncid, "ZSIG", varid)
    call NF95_GET_VAR(ncid, varid, zsig)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(zsig(i), xmin)
       xmax = MAX(zsig(i), xmax)
    ENDDO
    PRINT *, 'OROGRAPHIE SOUS-MAILLE zsig:', xmin, xmax

    call NF95_INQ_VARID(ncid, "ZGAM", varid)
    call NF95_GET_VAR(ncid, varid, zgam)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(zgam(i), xmin)
       xmax = MAX(zgam(i), xmax)
    ENDDO
    PRINT *, 'OROGRAPHIE SOUS-MAILLE zgam:', xmin, xmax

    call NF95_INQ_VARID(ncid, "ZTHE", varid)
    call NF95_GET_VAR(ncid, varid, zthe)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(zthe(i), xmin)
       xmax = MAX(zthe(i), xmax)
    ENDDO
    PRINT *, 'OROGRAPHIE SOUS-MAILLE zthe:', xmin, xmax

    call NF95_INQ_VARID(ncid, "ZPIC", varid)
    call NF95_GET_VAR(ncid, varid, zpic)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(zpic(i), xmin)
       xmax = MAX(zpic(i), xmax)
    ENDDO
    PRINT *, 'OROGRAPHIE SOUS-MAILLE zpic:', xmin, xmax

    call NF95_INQ_VARID(ncid, "ZVAL", varid)
    call NF95_GET_VAR(ncid, varid, zval)
    xmin = 1.0E+20
    xmax = -1.0E+20
    DO i = 1, klon
       xmin = MIN(zval(i), xmin)
       xmax = MAX(zval(i), xmax)
    ENDDO
    PRINT *, 'OROGRAPHIE SOUS-MAILLE zval:', xmin, xmax

    ancien_ok = .TRUE.

    ierr = NF90_INQ_VARID(ncid, "TANCIEN", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, "phyetat0: Le champ <TANCIEN> est absent"
       PRINT *, "Depart legerement fausse. Mais je continue"
       ancien_ok = .FALSE.
    ELSE
       call nf95_get_var(ncid, varid, t_ancien)
    ENDIF

    ierr = NF90_INQ_VARID(ncid, "QANCIEN", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, "phyetat0: Le champ <QANCIEN> est absent"
       PRINT *, "Depart legerement fausse. Mais je continue"
       ancien_ok = .FALSE.
    ELSE
       call nf95_get_var(ncid, varid, q_ancien)
    ENDIF

    ierr = NF90_INQ_VARID(ncid, "CLWCON", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, "phyetat0: Le champ CLWCON est absent"
       PRINT *, "Depart legerement fausse. Mais je continue"
       clwcon = 0.
    ELSE
       call nf95_get_var(ncid, varid, clwcon(:, 1))
       clwcon(:, 2:) = 0.
    ENDIF
    xmin = 1.0E+20
    xmax = -1.0E+20
    xmin = MINval(clwcon)
    xmax = MAXval(clwcon)
    PRINT *, 'Eau liquide convective (ecart-type) clwcon:', xmin, xmax

    ierr = NF90_INQ_VARID(ncid, "RNEBCON", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, "phyetat0: Le champ RNEBCON est absent"
       PRINT *, "Depart legerement fausse. Mais je continue"
       rnebcon = 0.
    ELSE
       call nf95_get_var(ncid, varid, rnebcon(:, 1))
       rnebcon(:, 2:) = 0.
    ENDIF
    xmin = 1.0E+20
    xmax = -1.0E+20
    xmin = MINval(rnebcon)
    xmax = MAXval(rnebcon)
    PRINT *, 'Nebulosite convective (ecart-type) rnebcon:', xmin, xmax

    ! Lecture ratqs

    ierr = NF90_INQ_VARID(ncid, "RATQS", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, "phyetat0: Le champ <RATQS> est absent"
       PRINT *, "Depart legerement fausse. Mais je continue"
       ratqs = 0.
    ELSE
       call nf95_get_var(ncid, varid, ratqs(:, 1))
       ratqs(:, 2:) = 0.
    ENDIF
    xmin = 1.0E+20
    xmax = -1.0E+20
    xmin = MINval(ratqs)
    xmax = MAXval(ratqs)
    PRINT *, '(ecart-type) ratqs:', xmin, xmax

    ! Lecture run_off_lic_0

    ierr = NF90_INQ_VARID(ncid, "RUNOFFLIC0", varid)
    IF (ierr /= NF90_NOERR) THEN
       PRINT *, "phyetat0: Le champ <RUNOFFLIC0> est absent"
       PRINT *, "Depart legerement fausse. Mais je continue"
       run_off_lic_0 = 0.
    ELSE
       call nf95_get_var(ncid, varid, run_off_lic_0)
    ENDIF
    xmin = 1.0E+20
    xmax = -1.0E+20
    xmin = MINval(run_off_lic_0)
    xmax = MAXval(run_off_lic_0)
    PRINT *, '(ecart-type) run_off_lic_0:', xmin, xmax

    call nf95_inq_varid(ncid, "sig1", varid)
    call nf95_get_var(ncid, varid, sig1)

    call nf95_inq_varid(ncid, "w01", varid)
    call nf95_get_var(ncid, varid, w01)

    call NF95_CLOSE(ncid)

  END SUBROUTINE phyetat0

end module phyetat0_m