SUBROUTINE dynetat0_loc(fichnom, vcov, ucov, teta, q, masse, ps, phis, time)

  !-------------------------------------------------------------------------------
  ! Authors: P. Le Van , L.Fairhead
  !-------------------------------------------------------------------------------
  ! Purpose: Initial state reading.
  !-------------------------------------------------------------------------------
  USE parallel_lmdz
  USE lmdz_infotrac, ONLY: nqtot, tracers, niso, iqIsoPha, iH2O, isoName
  USE lmdz_strings, ONLY: maxlen, msg, strStack, real2str, int2str, strIdx
  USE netcdf, ONLY: nf90_open, nf90_nowrite, nf90_inquire_dimension, nf90_inq_varid, &
          nf90_close, nf90_get_var, nf90_inquire_variable, nf90_noerr
  USE lmdz_readTracFiles, ONLY: new2oldH2O, newHNO3, oldHNO3, getKey
  USE control_mod, ONLY: planet_type
  USE lmdz_assert_eq, ONLY: assert_eq
  USE comvert_mod, ONLY: pa, preff
  USE comconst_mod, ONLY: cpp, daysec, dtvr, g, im, jm, kappa, lllm, omeg, rad
  USE logic_mod, ONLY: fxyhypb, ysinus
  USE serre_mod, ONLY: clon, clat, grossismx, grossismy
  USE temps_mod, ONLY: annee_ref, day_ini, day_ref, itau_dyn, start_time
  USE ener_mod, ONLY: etot0, ptot0, ztot0, stot0, ang0
  USE lmdz_cppkeys_wrapper, ONLY: CPPKEY_INCA, CPPKEY_REPROBUS
  USE lmdz_iniprint, ONLY: lunout, prt_level
  USE lmdz_comgeom

  USE lmdz_dimensions, ONLY: iim, jjm, llm, ndm
  USE lmdz_paramet
  IMPLICIT NONE


  !===============================================================================
  ! Arguments:
  CHARACTER(LEN = *), INTENT(IN) :: fichnom          !--- FILE NAME
  REAL, INTENT(OUT) :: vcov(ijb_v:ije_v, llm)      !--- V COVARIANT WIND
  REAL, INTENT(OUT) :: ucov(ijb_u:ije_u, llm)      !--- U COVARIANT WIND
  REAL, INTENT(OUT) :: teta(ijb_u:ije_u, llm)      !--- POTENTIAL TEMP.
  REAL, INTENT(OUT) :: q(ijb_u:ije_u, llm, nqtot)!--- TRACERS
  REAL, INTENT(OUT) :: masse(ijb_u:ije_u, llm)      !--- MASS PER CELL
  REAL, INTENT(OUT) :: ps(ijb_u:ije_u)          !--- GROUND PRESSURE
  REAL, INTENT(OUT) :: phis(ijb_u:ije_u)          !--- GEOPOTENTIAL
  !===============================================================================
  ! Local variables:
  CHARACTER(LEN = maxlen) :: mesg, var, modname, oldVar
  INTEGER, PARAMETER :: length = 100
  INTEGER :: iq, fID, vID, idecal, ierr, iqParent, iName, iZone, iPhase, ix
  REAL :: time, tab_cntrl(length)    !--- RUN PARAMS TABLE
  REAL :: tnat, alpha_ideal
  REAL, ALLOCATABLE :: vcov_glo(:, :), masse_glo(:, :), ps_glo(:)
  REAL, ALLOCATABLE :: ucov_glo(:, :), q_glo(:, :), phis_glo(:)
  REAL, ALLOCATABLE :: teta_glo(:, :)
  LOGICAL :: lSkip, ll
  LOGICAL, PARAMETER :: tnat1 = .TRUE.
  !-------------------------------------------------------------------------------
  modname = "dynetat0_loc"

  !--- Initial state file opening
  var = fichnom
  CALL err(nf90_open(var, nf90_nowrite, fID), "open", var)
  CALL get_var1("controle", tab_cntrl)

  !!! AS: idecal is a hack to be able to read planeto starts...
  !!!     .... while keeping everything OK for LMDZ EARTH
  IF(planet_type=="generic") THEN
    CALL msg('NOTE NOTE NOTE : Planeto-like start files', modname)
    idecal = 4
    annee_ref = 2000
  ELSE
    CALL msg('NOTE NOTE NOTE : Earth-like start files', modname)
    idecal = 5
    annee_ref = tab_cntrl(5)
  END IF
  im = tab_cntrl(1)
  jm = tab_cntrl(2)
  lllm = tab_cntrl(3)
  day_ref = tab_cntrl(4)
  rad = tab_cntrl(idecal + 1)
  omeg = tab_cntrl(idecal + 2)
  g = tab_cntrl(idecal + 3)
  cpp = tab_cntrl(idecal + 4)
  kappa = tab_cntrl(idecal + 5)
  daysec = tab_cntrl(idecal + 6)
  dtvr = tab_cntrl(idecal + 7)
  etot0 = tab_cntrl(idecal + 8)
  ptot0 = tab_cntrl(idecal + 9)
  ztot0 = tab_cntrl(idecal + 10)
  stot0 = tab_cntrl(idecal + 11)
  ang0 = tab_cntrl(idecal + 12)
  pa = tab_cntrl(idecal + 13)
  preff = tab_cntrl(idecal + 14)

  clon = tab_cntrl(idecal + 15)
  clat = tab_cntrl(idecal + 16)
  grossismx = tab_cntrl(idecal + 17)
  grossismy = tab_cntrl(idecal + 18)

  IF (tab_cntrl(idecal + 19)==1.)  THEN
    fxyhypb = .TRUE.
    !   dzoomx   = tab_cntrl(25)
    !   dzoomy   = tab_cntrl(26)
    !   taux     = tab_cntrl(28)
    !   tauy     = tab_cntrl(29)
  ELSE
    fxyhypb = .FALSE.
    ysinus = tab_cntrl(idecal + 22)==1.
  END IF

  day_ini = tab_cntrl(30)
  itau_dyn = tab_cntrl(31)
  start_time = tab_cntrl(32)

  !-------------------------------------------------------------------------------
  CALL msg('rad, omeg, g, cpp, kappa = ' // TRIM(strStack(real2str([rad, omeg, g, cpp, kappa]))), modname)
  CALL check_dim(im, iim, 'im', 'im')
  CALL check_dim(jm, jjm, 'jm', 'jm')
  CALL check_dim(lllm, llm, 'lm', 'lllm')
  CALL get_var1("rlonu", rlonu)
  CALL get_var1("rlatu", rlatu)
  CALL get_var1("rlonv", rlonv)
  CALL get_var1("rlatv", rlatv)
  CALL get_var1("cu", cu)
  CALL get_var1("cv", cv)
  CALL get_var1("aire", aire)

  var = "temps"
  IF(nf90_inq_varid(fID, var, vID)/=nf90_noerr) THEN
    CALL msg('missing field <temps> ; trying with <Time>', modname)
    var = "Time"
    CALL err(nf90_inq_varid(fID, var, vID), "inq", var)
  END IF
  CALL err(nf90_get_var(fID, vID, time), "get", var)

  ALLOCATE(phis_glo(ip1jmp1))
  CALL get_var1("phisinit", phis_glo)
  phis (ijb_u:ije_u) = phis_glo(ijb_u:ije_u);    DEALLOCATE(phis_glo)

  ALLOCATE(ucov_glo(ip1jmp1, llm))
  CALL get_var2("ucov", ucov_glo)
  ucov (ijb_u:ije_u, :) = ucov_glo(ijb_u:ije_u, :);  DEALLOCATE(ucov_glo)

  ALLOCATE(vcov_glo(ip1jm, llm))
  CALL get_var2("vcov", vcov_glo)
  vcov (ijb_v:ije_v, :) = vcov_glo(ijb_v:ije_v, :);  DEALLOCATE(vcov_glo)

  ALLOCATE(teta_glo(ip1jmp1, llm))
  CALL get_var2("teta", teta_glo)
  teta (ijb_u:ije_u, :) = teta_glo(ijb_u:ije_u, :);  DEALLOCATE(teta_glo)

  ALLOCATE(masse_glo(ip1jmp1, llm))
  CALL get_var2("masse", masse_glo)
  masse(ijb_u:ije_u, :) = masse_glo(ijb_u:ije_u, :); DEALLOCATE(masse_glo)

  ALLOCATE(ps_glo(ip1jmp1))
  CALL get_var1("ps", ps_glo)
  ps   (ijb_u:ije_u) = ps_glo(ijb_u:ije_u);   DEALLOCATE(ps_glo)

  !--- Tracers
  ALLOCATE(q_glo(ip1jmp1, llm))
  ll = .FALSE.
  IF (CPPKEY_REPROBUS) THEN
    ll = nf90_inq_varid(fID, 'HNO3tot', vID) /= nf90_noerr                                 !--- DETECT OLD REPRO start.nc FILE
  END IF
  DO iq = 1, nqtot
    var = tracers(iq)%name
    oldVar = new2oldH2O(var)
    lSkip = ll .AND. var == 'HNO3'                                                       !--- FORCE "HNO3_g" READING FOR "HNO3"
    IF (CPPKEY_REPROBUS) THEN
      ix = strIdx(newHNO3, var); IF(ix /= 0) oldVar = oldHNO3(ix)                          !--- REPROBUS HNO3 exceptions
    END IF
    IF (CPPKEY_INCA) THEN
      IF(var == 'O3') oldVar = 'OX'                                                        !--- DEAL WITH INCA OZONE EXCEPTION
    END IF
    !--------------------------------------------------------------------------------------------------------------------------
    IF(nf90_inq_varid(fID, var, vID) == nf90_noerr .AND. .NOT.lSkip) THEN                !=== REGULAR CASE: AVAILABLE VARIABLE
      CALL get_var2(var, q_glo); q(ijb_u:ije_u, :, iq) = q_glo(ijb_u:ije_u, :)
      !--------------------------------------------------------------------------------------------------------------------------
    ELSE IF(nf90_inq_varid(fID, oldVar, vID) == nf90_noerr) THEN                         !=== TRY WITH ALTERNATE NAME
      CALL msg('Tracer <' // TRIM(var) // '> is missing => initialized to <' // TRIM(oldVar) // '>', modname)
      CALL get_var2(oldVar, q_glo); q(ijb_u:ije_u, :, iq) = q_glo(ijb_u:ije_u, :)
      !--------------------------------------------------------------------------------------------------------------------------
    ELSE IF(tracers(iq)%iso_iGroup == iH2O .AND. niso > 0) THEN                          !=== WATER ISOTOPES
      iName = tracers(iq)%iso_iName
      iPhase = tracers(iq)%iso_iPhase
      iqParent = tracers(iq)%iqParent
      IF(tracers(iq)%iso_iZone == 0) THEN
        IF (tnat1) THEN
          tnat = 1.0
          alpha_ideal = 1.0
          WRITE(*, *) 'attention dans dynetat0: les alpha_ideal sont a 1'
        else
          IF(getKey('tnat', tnat, isoName(iName)) .OR. getKey('alpha', alpha_ideal, isoName(iName))) &
                  CALL abort_gcm(TRIM(modname), 'missing isotopic parameters', 1)
        endif
        CALL msg('Tracer <' // TRIM(var) // '> is missing => initialized with a simplified Rayleigh distillation law.', modname)
        q(ijb_u:ije_u, :, iq) = q(ijb_u:ije_u, :, iqParent) * tnat * (q(ijb_u:ije_u, :, iqParent) / 30.e-3)**(alpha_ideal - 1.)
        ! Camille 9 mars 2023: point de vigilence: initialisation incohérente
        ! avec celle de xt_ancien dans la physiq.
      ELSE
        CALL msg('Tracer <' // TRIM(var) // '> is missing => initialized to its parent isotope concentration.', modname)
        ! Camille 9 mars 2023: attention!! seuls les tags qui correspondent à
        ! izone=izone_init (définie dans isotrac_mod) sont initialisés comme
        ! les parents. Sinon, c'est nul.
        ! j'ai fait ça en attendant, mais il faudrait initialiser proprement en
        ! remplacant 1 par izone_init dans la ligne qui suit.
        IF(tracers(iq)%iso_iZone == 1) THEN
          q(ijb_u:ije_u, :, iq) = q(ijb_u:ije_u, :, iqIsoPha(iName, iPhase))
        ELSE
          q(ijb_u:ije_u, :, iq) = 0.
        ENDIF
      END IF
      !--------------------------------------------------------------------------------------------------------------------------
    ELSE                                                                                 !=== MISSING: SET TO 0
      CALL msg('Tracer <' // TRIM(var) // '> is missing => initialized to zero', modname)
      q(ijb_u:ije_u, :, iq) = 0.
      !--------------------------------------------------------------------------------------------------------------------------
    END IF
  END DO
  DEALLOCATE(q_glo)
  CALL err(nf90_close(fID), "close", fichnom)
  day_ini = day_ini + INT(time)
  time = time - INT(time)


CONTAINS


  SUBROUTINE check_dim(n1, n2, str1, str2)
    INTEGER, INTENT(IN) :: n1, n2
    CHARACTER(LEN = *), INTENT(IN) :: str1, str2
    CHARACTER(LEN = maxlen) :: s1, s2
    IF(n1/=n2) CALL abort_gcm(TRIM(modname), 'value of "' // TRIM(str1) // '" = ' // TRIM(int2str(n1)) // &
            ' read in starting file differs from gcm value of "' // TRIM(str2) // '" = ' // TRIM(int2str(n2)), 1)
  END SUBROUTINE check_dim


  SUBROUTINE get_var1(var, v)
    CHARACTER(LEN = *), INTENT(IN) :: var
    REAL, INTENT(OUT) :: v(:)
    REAL, ALLOCATABLE :: w2(:, :), w3(:, :, :)
    INTEGER :: nn(3), dids(3), k, nd, ntot

    CALL err(nf90_inq_varid(fID, var, vID), "inq", var)
    ierr = nf90_inquire_variable(fID, vID, ndims = nd)
    IF(nd==1) THEN
      CALL err(nf90_get_var(fID, vID, v), "get", var); RETURN
    END IF
    ierr = nf90_inquire_variable(fID, vID, dimids = dids)
    DO k = 1, nd; ierr = nf90_inquire_dimension(fID, dids(k), len = nn(k));
    END DO
    ntot = PRODUCT(nn(1:nd))
    SELECT CASE(nd)
    CASE(2); ALLOCATE(w2(nn(1), nn(2)))
    CALL err(nf90_get_var(fID, vID, w2), "get", var)
    v = RESHAPE(w2, [ntot]); DEALLOCATE(w2)
    CASE(3); ALLOCATE(w3(nn(1), nn(2), nn(3)))
    CALL err(nf90_get_var(fID, vID, w3), "get", var)
    v = RESHAPE(w3, [ntot]); DEALLOCATE(w3)
    END SELECT
  END SUBROUTINE get_var1

  SUBROUTINE get_var2(var, v)
    CHARACTER(LEN = *), INTENT(IN) :: var
    REAL, INTENT(OUT) :: v(:, :)
    REAL, ALLOCATABLE :: w4(:, :, :, :), w3(:, :, :)
    INTEGER :: nn(4), dids(4), k, nd

    CALL err(nf90_inq_varid(fID, var, vID), "inq", var)
    ierr = nf90_inquire_variable(fID, vID, ndims = nd)

    IF(nd==1) THEN
      CALL err(nf90_get_var(fID, vID, v), "get", var); RETURN
    END IF
    ierr = nf90_inquire_variable(fID, vID, dimids = dids)

    DO k = 1, nd; ierr = nf90_inquire_dimension(fID, dids(k), len = nn(k));
    END DO

    SELECT CASE(nd)
    CASE(3); ALLOCATE(w3(nn(1), nn(2), nn(3)))
    CALL err(nf90_get_var(fID, vID, w3), "get", var)
    v = RESHAPE(w3, [nn(1) * nn(2), nn(3)]); DEALLOCATE(w3)
    CASE(4);  ALLOCATE(w4(nn(1), nn(2), nn(3), nn(4)))
    CALL err(nf90_get_var(fID, vID, w4), "get", var)
    v = RESHAPE(w4, [nn(1) * nn(2), nn(3)]); DEALLOCATE(w4)
    END SELECT
  END SUBROUTINE get_var2


  SUBROUTINE err(ierr, typ, nam)
    INTEGER, INTENT(IN) :: ierr   !--- NetCDF ERROR CODE
    CHARACTER(LEN = *), INTENT(IN) :: typ    !--- TYPE OF OPERATION
    CHARACTER(LEN = *), INTENT(IN) :: nam    !--- FIELD/FILE NAME
    IF(ierr==nf90_noerr) RETURN
    SELECT CASE(typ)
    CASE('inq');   mesg = "Field <" // TRIM(nam) // "> is missing"
    CASE('get');   mesg = "Reading failed for <" // TRIM(nam) // ">"
    CASE('open');  mesg = "File opening failed for <" // TRIM(nam) // ">"
    CASE('close'); mesg = "File closing failed for <" // TRIM(nam) // ">"
    END SELECT
    CALL ABORT_gcm(TRIM(modname), TRIM(mesg), ierr)
  END SUBROUTINE err

END SUBROUTINE dynetat0_loc