Sources/dyn3d/etat0.f

module etat0_mod

  use indicesol, only: nbsrf
  use dimphy, only: klon

  IMPLICIT NONE

  REAL pctsrf(klon, nbsrf)
  ! ("pctsrf(i, :)" is the composition of the surface at horizontal
  ! position "i")

  private nbsrf, klon

contains

  SUBROUTINE etat0

    ! From "etat0_netcdf.F", version 1.3, 2005/05/25 13:10:09

    use caldyn0_m, only: caldyn0
    use comconst, only: cpp, kappa, iniconst
    use comgeom, only: rlatu, rlonv, rlonu, rlatv, aire_2d, apoln, apols, &
         cu_2d, cv_2d, inigeom
    use conf_gcm_m, only: dayref, anneeref
    use dimens_m, only: iim, jjm, llm, nqmx
    use dimphy, only: zmasq
    use dimsoil, only: nsoilmx
    use disvert_m, only: ap, bp, preff, pa, disvert
    use dynredem0_m, only: dynredem0
    use dynredem1_m, only: dynredem1
    use exner_hyb_m, only: exner_hyb
    use geopot_m, only: geopot
    use grid_atob, only: grille_m
    use grid_change, only: init_dyn_phy, dyn_phy
    use histclo_m, only: histclo
    use indicesol, only: is_oce, is_sic, is_ter, is_lic, epsfra
    use iniadvtrac_m, only: iniadvtrac
    use inifilr_m, only: inifilr
    use massdair_m, only: massdair
    use netcdf, only: nf90_nowrite
    use netcdf95, only: nf95_close, nf95_get_var, nf95_gw_var, &
         nf95_inq_varid, nf95_open
    use nr_util, only: pi, assert
    use paramet_m, only: ip1jm, ip1jmp1
    use phyredem_m, only: phyredem
    use q_sat_m, only: q_sat
    use regr_lat_time_coefoz_m, only: regr_lat_time_coefoz
    use regr_pr_o3_m, only: regr_pr_o3
    use serre, only: alphax
    use startdyn, only: start_init_dyn
    USE start_init_orog_m, only: start_init_orog, mask
    use start_init_phys_m, only: start_init_phys
    use start_inter_3d_m, only: start_inter_3d
    use temps, only: itau_phy, annee_ref, day_ref
    use test_disvert_m, only: test_disvert

    ! Variables local to the procedure:

    REAL latfi(klon), lonfi(klon)
    ! (latitude and longitude of a point of the scalar grid identified
    ! by a simple index, in degrees)

    REAL, dimension(iim + 1, jjm + 1, llm):: ucov, t3d, teta
    REAL vcov(iim + 1, jjm, llm)

    REAL q(iim + 1, jjm + 1, llm, nqmx)
    ! (mass fractions of trace species
    ! "q(i, j, l)" is at longitude "rlonv(i)", latitude "rlatu(j)"
    ! and pressure level "pls(i, j, l)".)

    real qsat(iim + 1, jjm + 1, llm) ! mass fraction of saturating water vapor
    REAL sn(klon)
    REAL qsolsrf(klon, nbsrf), snsrf(klon, nbsrf) 
    REAL albe(klon, nbsrf), evap(klon, nbsrf)
    REAL alblw(klon, nbsrf)
    REAL tsoil(klon, nsoilmx, nbsrf) 
    REAL radsol(klon), rain_fall(klon), snow_fall(klon)
    REAL solsw(klon), sollw(klon), fder(klon)
    !IM "slab" ocean
    real seaice(klon) ! kg m-2
    REAL frugs(klon, nbsrf), agesno(klon, nbsrf)
    REAL rugmer(klon)
    REAL phis(iim + 1, jjm + 1) ! surface geopotential, in m2 s-2
    real, dimension(iim + 1, jjm + 1):: zmea_2d, zstd_2d, zsig_2d, zgam_2d
    real, dimension(iim + 1, jjm + 1):: zthe_2d, zpic_2d, zval_2d
    real, dimension(iim + 1, jjm + 1):: tsol_2d, qsol_2d, ps
    REAL zmea(klon), zstd(klon)
    REAL zsig(klon), zgam(klon)
    REAL zthe(klon)
    REAL zpic(klon), zval(klon)
    REAL t_ancien(klon, llm), q_ancien(klon, llm)
    REAL run_off_lic_0(klon)
    real clwcon(klon, llm), rnebcon(klon, llm), ratqs(klon, llm)

    ! D\'eclarations pour lecture glace de mer :
    INTEGER iml_lic, jml_lic
    INTEGER ncid, varid
    REAL, pointer:: dlon_lic(:), dlat_lic(:)
    REAL, ALLOCATABLE:: fraclic(:, :) ! fraction land ice
    REAL flic_tmp(iim + 1, jjm + 1) ! fraction land ice temporary

    INTEGER l, ji

    REAL pk(iim + 1, jjm + 1, llm) ! fonction d'Exner aux milieux des couches 
    real pks(iim + 1, jjm + 1)

    REAL masse(iim + 1, jjm + 1, llm)
    REAL phi(iim + 1, jjm + 1, llm)
    REAL pbaru(ip1jmp1, llm), pbarv(ip1jm, llm)
    REAL w(iim + 1, jjm + 1, llm)

    real sig1(klon, llm) ! section adiabatic updraft
    real w01(klon, llm) ! vertical velocity within adiabatic updraft

    real pls(iim + 1, jjm + 1, llm)
    ! (pressure at mid-layer of LMDZ grid, in Pa)
    ! "pls(i, j, l)" is at longitude "rlonv(i)", latitude "rlatu(j)",
    ! for layer "l")

    REAL p3d(iim + 1, jjm + 1, llm+1) ! pressure at layer interfaces, in Pa
    ! ("p3d(i, j, l)" is at longitude "rlonv(i)", latitude "rlatu(j)",
    ! for interface "l")

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

    print *, "Call sequence information: etat0"

    CALL iniconst

    ! Construct a grid:

    pa = 5e4
    CALL disvert
    call test_disvert
    CALL inigeom
    CALL inifilr

    latfi(1) = 90.
    latfi(2:klon-1) = pack(spread(rlatu(2:jjm), 1, iim), .true.) * 180. / pi
    ! (with conversion to degrees)
    latfi(klon) = - 90.

    lonfi(1) = 0.
    lonfi(2:klon-1) = pack(spread(rlonv(:iim), 2, jjm - 1), .true.) * 180. / pi
    ! (with conversion to degrees)
    lonfi(klon) = 0.

    call start_init_orog(phis, zmea_2d, zstd_2d, zsig_2d, zgam_2d, zthe_2d, &
         zpic_2d, zval_2d) ! also compute "mask"
    call init_dyn_phy ! define the mask "dyn_phy" for distinct grid points
    zmasq = pack(mask, dyn_phy)
    PRINT *, 'Masque construit'

    call start_init_phys(tsol_2d, qsol_2d)
    CALL start_init_dyn(tsol_2d, phis, ps)

    ! Compute pressure on intermediate levels:
    forall(l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
    CALL exner_hyb(ps, p3d, pks, pk)
    call assert(MINVAL(pk) /= MAXVAL(pk), '"pk" should not be constant')

    pls = preff * (pk / cpp)**(1. / kappa)
    PRINT *, "minval(pls) = ", minval(pls)
    print *, "maxval(pls) = ", maxval(pls)

    call start_inter_3d('U', rlonv, rlatv, pls, ucov)
    forall (l = 1: llm) ucov(:iim, :, l) = ucov(:iim, :, l) * cu_2d(:iim, :)
    ucov(iim+1, :, :) = ucov(1, :, :)

    call start_inter_3d('V', rlonu, rlatu(:jjm), pls(:, :jjm, :), vcov)
    forall (l = 1: llm) vcov(:iim, :, l) = vcov(:iim, :, l) * cv_2d(:iim, :)
    vcov(iim + 1, :, :) = vcov(1, :, :)

    call start_inter_3d('TEMP', rlonu, rlatv, pls, t3d)
    PRINT *, 'minval(t3d) = ', minval(t3d)
    print *, "maxval(t3d) = ", maxval(t3d)

    teta(:iim, :, :) = t3d(:iim, :, :) * cpp / pk(:iim, :, :)
    teta(iim + 1, :, :) = teta(1, :, :)
    DO l = 1, llm
       teta(:, 1, l) = SUM(aire_2d(:, 1) * teta(:, 1, l)) / apoln
       teta(:, jjm + 1, l) = SUM(aire_2d(:, jjm + 1) * teta(:, jjm + 1, l)) &
            / apols
    ENDDO

    ! Calcul de l'humidit\'e \`a saturation :
    qsat = q_sat(t3d, pls)
    PRINT *, "minval(qsat) = ", minval(qsat)
    print *, "maxval(qsat) = ", maxval(qsat)
    IF (MINVAL(qsat) == MAXVAL(qsat)) stop '"qsat" should not be constant'

    ! Water vapor:
    call start_inter_3d('R', rlonu, rlatv, pls, q(:, :, :, 1))
    q(:, :, :, 1) = 0.01 * q(:, :, :, 1) * qsat
    WHERE (q(:, :, :, 1) < 0.) q(:, :, :, 1) = 1E-10
    DO l = 1, llm
       q(:, 1, l, 1) = SUM(aire_2d(:, 1) * q(:, 1, l, 1)) / apoln
       q(:, jjm + 1, l, 1) &
            = SUM(aire_2d(:, jjm + 1) * q(:, jjm + 1, l, 1)) / apols
    ENDDO

    q(:, :, :, 2:4) = 0. ! liquid water, radon and lead

    if (nqmx >= 5) then
       ! Ozone:
       call regr_lat_time_coefoz
       call regr_pr_o3(p3d, q(:, :, :, 5))
       ! Convert from mole fraction to mass fraction:
       q(:, :, :, 5) = q(:, :, :, 5) * 48. / 29.
    end if

    sn = 0. ! snow
    radsol = 0.
    seaice = 0.
    rugmer = 0.001
    zmea = pack(zmea_2d, dyn_phy)
    zstd = pack(zstd_2d, dyn_phy)
    zsig = pack(zsig_2d, dyn_phy)
    zgam = pack(zgam_2d, dyn_phy)
    zthe = pack(zthe_2d, dyn_phy)
    zpic = pack(zpic_2d, dyn_phy)
    zval = pack(zval_2d, dyn_phy)

    ! On initialise les sous-surfaces.
    ! Lecture du fichier glace de terre pour fixer la fraction de terre 
    ! et de glace de terre :

    call nf95_open("landiceref.nc", nf90_nowrite, ncid)

    call nf95_inq_varid(ncid, 'longitude', varid)
    call nf95_gw_var(ncid, varid, dlon_lic)
    iml_lic = size(dlon_lic)

    call nf95_inq_varid(ncid, 'latitude', varid)
    call nf95_gw_var(ncid, varid, dlat_lic)
    jml_lic = size(dlat_lic)

    call nf95_inq_varid(ncid, 'landice', varid)
    ALLOCATE(fraclic(iml_lic, jml_lic))
    call nf95_get_var(ncid, varid, fraclic)

    call nf95_close(ncid)

    ! Interpolation sur la grille T du mod\`ele :
    PRINT *, 'Dimensions de "landiceref.nc"'
    print *, "iml_lic = ", iml_lic
    print *, "jml_lic = ", jml_lic

    ! Si les coordonn\'ees sont en degr\'es, on les transforme :
    IF (MAXVAL(dlon_lic) > pi) THEN
       dlon_lic = dlon_lic * pi / 180.
    ENDIF
    IF (maxval(dlat_lic) > pi) THEN 
       dlat_lic = dlat_lic * pi/ 180.
    ENDIF

    flic_tmp(:iim, :) = grille_m(dlon_lic, dlat_lic, fraclic, rlonv(:iim), &
         rlatu)
    flic_tmp(iim + 1, :) = flic_tmp(1, :)

    deallocate(dlon_lic, dlat_lic) ! pointers

    ! Passage sur la grille physique
    pctsrf = 0.
    pctsrf(:, is_lic) = pack(flic_tmp, dyn_phy)
    ! Ad\'equation avec le maque terre/mer
    WHERE (pctsrf(:, is_lic) < EPSFRA) pctsrf(:, is_lic) = 0.
    WHERE (zmasq < EPSFRA) pctsrf(:, is_lic) = 0.
    pctsrf(:, is_ter) = zmasq
    where (zmasq > EPSFRA)
       where (pctsrf(:, is_lic) >= zmasq)
          pctsrf(:, is_lic) = zmasq
          pctsrf(:, is_ter) = 0.
       elsewhere
          pctsrf(:, is_ter) = zmasq - pctsrf(:, is_lic)
          where (pctsrf(:, is_ter) < EPSFRA)
             pctsrf(:, is_ter) = 0.
             pctsrf(:, is_lic) = zmasq
          end where
       end where
    end where

    ! Sous-surface oc\'ean et glace de mer (pour d\'emarrer on met glace
    ! de mer \`a 0) :
    pctsrf(:, is_oce) = 1. - zmasq
    WHERE (pctsrf(:, is_oce) < EPSFRA) pctsrf(:, is_oce) = 0.

    ! V\'erification que somme des sous-surfaces vaut 1 :
    ji = count(abs(sum(pctsrf, dim = 2) - 1.) > EPSFRA)
    IF (ji /= 0) then
       PRINT *, 'Bad surface percentages for ', ji, 'points'
    end IF

    ! Calcul interm\'ediaire :
    CALL massdair(p3d, masse)

    print *, 'ALPHAX = ', alphax

    forall (l = 1:llm)
       masse(:, 1, l) = SUM(aire_2d(:iim, 1) * masse(:iim, 1, l)) / apoln
       masse(:, jjm + 1, l) = &
            SUM(aire_2d(:iim, jjm + 1) * masse(:iim, jjm + 1, l)) / apols
    END forall

    ! Initialisation pour traceurs:
    call iniadvtrac
    itau_phy = 0
    day_ref = dayref
    annee_ref = anneeref

    CALL geopot(teta, pk , pks, phis, phi)
    CALL caldyn0(ucov, vcov, teta, ps, masse, pk, phis, phi, w, pbaru, &
         pbarv)
    CALL dynredem0("start.nc", dayref, phis)
    CALL dynredem1("start.nc", vcov, ucov, teta, q, masse, ps, itau=0)

    ! Initialisations :
    snsrf(:, is_ter) = sn
    snsrf(:, is_lic) = sn
    snsrf(:, is_oce) = sn
    snsrf(:, is_sic) = sn
    albe(:, is_ter) = 0.08
    albe(:, is_lic) = 0.6
    albe(:, is_oce) = 0.5
    albe(:, is_sic) = 0.6
    alblw = albe
    evap = 0.
    qsolsrf = 150.
    tsoil = spread(spread(pack(tsol_2d, dyn_phy), 2, nsoilmx), 3, nbsrf)
    rain_fall = 0.
    snow_fall = 0.
    solsw = 165.
    sollw = -53.
    t_ancien = 273.15
    q_ancien = 0.
    agesno = 0.
    seaice = 0.

    frugs(:, is_oce) = rugmer
    frugs(:, is_ter) = MAX(1e-5, zstd * zsig / 2)
    frugs(:, is_lic) = MAX(1e-5, zstd * zsig / 2)
    frugs(:, is_sic) = 0.001
    fder = 0.
    clwcon = 0.
    rnebcon = 0.
    ratqs = 0.
    run_off_lic_0 = 0.
    sig1 = 0.
    w01 = 0.

    call phyredem("startphy.nc", latfi, lonfi, pctsrf, tsoil(:, 1, :), tsoil, &
         tsoil(:, 1, is_oce), seaice, qsolsrf, pack(qsol_2d, dyn_phy), snsrf, &
         albe, alblw, evap, rain_fall, snow_fall, solsw, sollw, fder, radsol, &
         frugs, agesno, zmea, zstd, zsig, zgam, zthe, zpic, zval, t_ancien, &
         q_ancien, rnebcon, ratqs, clwcon, run_off_lic_0, sig1, w01)
    CALL histclo

  END SUBROUTINE etat0

end module etat0_mod
1	guez	3	module etat0_mod
2
3			use indicesol, only: nbsrf
4			use dimphy, only: klon
5
6			IMPLICIT NONE
7
8			REAL pctsrf(klon, nbsrf)
9	guez	15	! ("pctsrf(i, :)" is the composition of the surface at horizontal
10	guez	78	! position "i")
11	guez	3
12			private nbsrf, klon
13
14			contains
15
16			SUBROUTINE etat0
17
18	guez	90	! From "etat0_netcdf.F", version 1.3, 2005/05/25 13:10:09
19	guez	3
20	guez	27	use caldyn0_m, only: caldyn0
21	guez	79	use comconst, only: cpp, kappa, iniconst
22	guez	27	use comgeom, only: rlatu, rlonv, rlonu, rlatv, aire_2d, apoln, apols, &
23	guez	78	cu_2d, cv_2d, inigeom
24	guez	79	use conf_gcm_m, only: dayref, anneeref
25	guez	27	use dimens_m, only: iim, jjm, llm, nqmx
26	guez	3	use dimphy, only: zmasq
27			use dimsoil, only: nsoilmx
28	guez	79	use disvert_m, only: ap, bp, preff, pa, disvert
29	guez	27	use dynredem0_m, only: dynredem0
30			use dynredem1_m, only: dynredem1
31			use exner_hyb_m, only: exner_hyb
32	guez	43	use geopot_m, only: geopot
33	guez	3	use grid_atob, only: grille_m
34			use grid_change, only: init_dyn_phy, dyn_phy
35	guez	61	use histclo_m, only: histclo
36	guez	27	use indicesol, only: is_oce, is_sic, is_ter, is_lic, epsfra
37	guez	18	use iniadvtrac_m, only: iniadvtrac
38	guez	54	use inifilr_m, only: inifilr
39	guez	67	use massdair_m, only: massdair
40	guez	48	use netcdf, only: nf90_nowrite
41	guez	68	use netcdf95, only: nf95_close, nf95_get_var, nf95_gw_var, &
42			nf95_inq_varid, nf95_open
43	guez	90	use nr_util, only: pi, assert
44	guez	27	use paramet_m, only: ip1jm, ip1jmp1
45			use phyredem_m, only: phyredem
46			use q_sat_m, only: q_sat
47	guez	7	use regr_lat_time_coefoz_m, only: regr_lat_time_coefoz
48			use regr_pr_o3_m, only: regr_pr_o3
49	guez	27	use serre, only: alphax
50	guez	68	use startdyn, only: start_init_dyn
51	guez	78	USE start_init_orog_m, only: start_init_orog, mask
52	guez	43	use start_init_phys_m, only: start_init_phys
53	guez	54	use start_inter_3d_m, only: start_inter_3d
54	guez	28	use temps, only: itau_phy, annee_ref, day_ref
55	guez	99	use test_disvert_m, only: test_disvert
56	guez	3
57			! Variables local to the procedure:
58
59			REAL latfi(klon), lonfi(klon)
60			! (latitude and longitude of a point of the scalar grid identified
61	guez	90	! by a simple index, in degrees)
62	guez	3
63	guez	73	REAL, dimension(iim + 1, jjm + 1, llm):: ucov, t3d, teta
64	guez	65	REAL vcov(iim + 1, jjm, llm)
65	guez	3
66	guez	68	REAL q(iim + 1, jjm + 1, llm, nqmx)
67	guez	3	! (mass fractions of trace species
68	guez	68	! "q(i, j, l)" is at longitude "rlonv(i)", latitude "rlatu(j)"
69	guez	3	! and pressure level "pls(i, j, l)".)
70
71			real qsat(iim + 1, jjm + 1, llm) ! mass fraction of saturating water vapor
72	guez	99	REAL sn(klon)
73			REAL qsolsrf(klon, nbsrf), snsrf(klon, nbsrf)
74	guez	3	REAL albe(klon, nbsrf), evap(klon, nbsrf)
75			REAL alblw(klon, nbsrf)
76			REAL tsoil(klon, nsoilmx, nbsrf)
77			REAL radsol(klon), rain_fall(klon), snow_fall(klon)
78			REAL solsw(klon), sollw(klon), fder(klon)
79			!IM "slab" ocean
80			real seaice(klon) ! kg m-2
81			REAL frugs(klon, nbsrf), agesno(klon, nbsrf)
82			REAL rugmer(klon)
83	guez	78	REAL phis(iim + 1, jjm + 1) ! surface geopotential, in m2 s-2
84			real, dimension(iim + 1, jjm + 1):: zmea_2d, zstd_2d, zsig_2d, zgam_2d
85	guez	3	real, dimension(iim + 1, jjm + 1):: zthe_2d, zpic_2d, zval_2d
86	guez	73	real, dimension(iim + 1, jjm + 1):: tsol_2d, qsol_2d, ps
87	guez	3	REAL zmea(klon), zstd(klon)
88			REAL zsig(klon), zgam(klon)
89			REAL zthe(klon)
90			REAL zpic(klon), zval(klon)
91	guez	78	REAL t_ancien(klon, llm), q_ancien(klon, llm)
92	guez	3	REAL run_off_lic_0(klon)
93			real clwcon(klon, llm), rnebcon(klon, llm), ratqs(klon, llm)
94	guez	68
95	guez	90	! D\'eclarations pour lecture glace de mer :
96	guez	68	INTEGER iml_lic, jml_lic
97			INTEGER ncid, varid
98			REAL, pointer:: dlon_lic(:), dlat_lic(:)
99	guez	3	REAL, ALLOCATABLE:: fraclic(:, :) ! fraction land ice
100	guez	68	REAL flic_tmp(iim + 1, jjm + 1) ! fraction land ice temporary
101	guez	3
102			INTEGER l, ji
103
104			REAL pk(iim + 1, jjm + 1, llm) ! fonction d'Exner aux milieux des couches
105			real pks(iim + 1, jjm + 1)
106
107			REAL masse(iim + 1, jjm + 1, llm)
108	guez	70	REAL phi(iim + 1, jjm + 1, llm)
109	guez	3	REAL pbaru(ip1jmp1, llm), pbarv(ip1jm, llm)
110	guez	91	REAL w(iim + 1, jjm + 1, llm)
111	guez	3
112	guez	72	real sig1(klon, llm) ! section adiabatic updraft
113			real w01(klon, llm) ! vertical velocity within adiabatic updraft
114
115	guez	97	real pls(iim + 1, jjm + 1, llm)
116			! (pressure at mid-layer of LMDZ grid, in Pa)
117			! "pls(i, j, l)" is at longitude "rlonv(i)", latitude "rlatu(j)",
118			! for layer "l")
119
120			REAL p3d(iim + 1, jjm + 1, llm+1) ! pressure at layer interfaces, in Pa
121			! ("p3d(i, j, l)" is at longitude "rlonv(i)", latitude "rlatu(j)",
122			! for interface "l")
123
124	guez	3	!---------------------------------
125
126			print *, "Call sequence information: etat0"
127
128	guez	79	CALL iniconst
129	guez	3
130	guez	36	! Construct a grid:
131
132	guez	3	pa = 5e4
133	guez	79	CALL disvert
134	guez	99	call test_disvert
135	guez	3	CALL inigeom
136			CALL inifilr
137
138			latfi(1) = 90.
139			latfi(2:klon-1) = pack(spread(rlatu(2:jjm), 1, iim), .true.) * 180. / pi
140			! (with conversion to degrees)
141			latfi(klon) = - 90.
142
143			lonfi(1) = 0.
144			lonfi(2:klon-1) = pack(spread(rlonv(:iim), 2, jjm - 1), .true.) * 180. / pi
145			! (with conversion to degrees)
146			lonfi(klon) = 0.
147
148	guez	78	call start_init_orog(phis, zmea_2d, zstd_2d, zsig_2d, zgam_2d, zthe_2d, &
149			zpic_2d, zval_2d) ! also compute "mask"
150	guez	3	call init_dyn_phy ! define the mask "dyn_phy" for distinct grid points
151	guez	15	zmasq = pack(mask, dyn_phy)
152	guez	3	PRINT *, 'Masque construit'
153
154	guez	43	call start_init_phys(tsol_2d, qsol_2d)
155	guez	78	CALL start_init_dyn(tsol_2d, phis, ps)
156	guez	3
157			! Compute pressure on intermediate levels:
158	guez	73	forall(l = 1: llm + 1) p3d(:, :, l) = ap(l) + bp(l) * ps
159			CALL exner_hyb(ps, p3d, pks, pk)
160	guez	90	call assert(MINVAL(pk) /= MAXVAL(pk), '"pk" should not be constant')
161	guez	3
162	guez	36	pls = preff * (pk / cpp)**(1. / kappa)
163			PRINT *, "minval(pls) = ", minval(pls)
164			print *, "maxval(pls) = ", maxval(pls)
165	guez	3
166	guez	65	call start_inter_3d('U', rlonv, rlatv, pls, ucov)
167			forall (l = 1: llm) ucov(:iim, :, l) = ucov(:iim, :, l) * cu_2d(:iim, :)
168			ucov(iim+1, :, :) = ucov(1, :, :)
169	guez	3
170	guez	65	call start_inter_3d('V', rlonu, rlatu(:jjm), pls(:, :jjm, :), vcov)
171			forall (l = 1: llm) vcov(:iim, :, l) = vcov(:iim, :, l) * cv_2d(:iim, :)
172			vcov(iim + 1, :, :) = vcov(1, :, :)
173	guez	3
174	guez	23	call start_inter_3d('TEMP', rlonu, rlatv, pls, t3d)
175	guez	78	PRINT *, 'minval(t3d) = ', minval(t3d)
176	guez	36	print *, "maxval(t3d) = ", maxval(t3d)
177	guez	3
178	guez	73	teta(:iim, :, :) = t3d(:iim, :, :) * cpp / pk(:iim, :, :)
179			teta(iim + 1, :, :) = teta(1, :, :)
180			DO l = 1, llm
181			teta(:, 1, l) = SUM(aire_2d(:, 1) * teta(:, 1, l)) / apoln
182			teta(:, jjm + 1, l) = SUM(aire_2d(:, jjm + 1) * teta(:, jjm + 1, l)) &
183	guez	3	/ apols
184			ENDDO
185
186	guez	90	! Calcul de l'humidit\'e \`a saturation :
187	guez	36	qsat = q_sat(t3d, pls)
188			PRINT *, "minval(qsat) = ", minval(qsat)
189			print *, "maxval(qsat) = ", maxval(qsat)
190	guez	3	IF (MINVAL(qsat) == MAXVAL(qsat)) stop '"qsat" should not be constant'
191
192			! Water vapor:
193	guez	68	call start_inter_3d('R', rlonu, rlatv, pls, q(:, :, :, 1))
194			q(:, :, :, 1) = 0.01 * q(:, :, :, 1) * qsat
195			WHERE (q(:, :, :, 1) < 0.) q(:, :, :, 1) = 1E-10
196	guez	3	DO l = 1, llm
197	guez	68	q(:, 1, l, 1) = SUM(aire_2d(:, 1) * q(:, 1, l, 1)) / apoln
198			q(:, jjm + 1, l, 1) &
199			= SUM(aire_2d(:, jjm + 1) * q(:, jjm + 1, l, 1)) / apols
200	guez	3	ENDDO
201
202	guez	68	q(:, :, :, 2:4) = 0. ! liquid water, radon and lead
203	guez	3
204	guez	5	if (nqmx >= 5) then
205			! Ozone:
206	guez	7	call regr_lat_time_coefoz
207	guez	97	call regr_pr_o3(p3d, q(:, :, :, 5))
208	guez	7	! Convert from mole fraction to mass fraction:
209	guez	78	q(:, :, :, 5) = q(:, :, :, 5) * 48. / 29.
210	guez	5	end if
211	guez	3
212	guez	13	sn = 0. ! snow
213			radsol = 0.
214			seaice = 0.
215			rugmer = 0.001
216	guez	78	zmea = pack(zmea_2d, dyn_phy)
217	guez	13	zstd = pack(zstd_2d, dyn_phy)
218			zsig = pack(zsig_2d, dyn_phy)
219			zgam = pack(zgam_2d, dyn_phy)
220			zthe = pack(zthe_2d, dyn_phy)
221			zpic = pack(zpic_2d, dyn_phy)
222			zval = pack(zval_2d, dyn_phy)
223	guez	3
224	guez	49	! On initialise les sous-surfaces.
225	guez	3	! Lecture du fichier glace de terre pour fixer la fraction de terre
226	guez	49	! et de glace de terre :
227	guez	68
228	guez	48	call nf95_open("landiceref.nc", nf90_nowrite, ncid)
229	guez	68
230			call nf95_inq_varid(ncid, 'longitude', varid)
231			call nf95_gw_var(ncid, varid, dlon_lic)
232			iml_lic = size(dlon_lic)
233
234			call nf95_inq_varid(ncid, 'latitude', varid)
235			call nf95_gw_var(ncid, varid, dlat_lic)
236			jml_lic = size(dlat_lic)
237
238	guez	48	call nf95_inq_varid(ncid, 'landice', varid)
239	guez	68	ALLOCATE(fraclic(iml_lic, jml_lic))
240	guez	48	call nf95_get_var(ncid, varid, fraclic)
241	guez	68
242	guez	48	call nf95_close(ncid)
243	guez	3
244	guez	90	! Interpolation sur la grille T du mod\`ele :
245	guez	68	PRINT *, 'Dimensions de "landiceref.nc"'
246	guez	3	print *, "iml_lic = ", iml_lic
247			print *, "jml_lic = ", jml_lic
248
249	guez	90	! Si les coordonn\'ees sont en degr\'es, on les transforme :
250	guez	78	IF (MAXVAL(dlon_lic) > pi) THEN
251	guez	68	dlon_lic = dlon_lic * pi / 180.
252	guez	3	ENDIF
253	guez	73	IF (maxval(dlat_lic) > pi) THEN
254	guez	68	dlat_lic = dlat_lic * pi/ 180.
255	guez	3	ENDIF
256
257			flic_tmp(:iim, :) = grille_m(dlon_lic, dlat_lic, fraclic, rlonv(:iim), &
258			rlatu)
259			flic_tmp(iim + 1, :) = flic_tmp(1, :)
260
261	guez	68	deallocate(dlon_lic, dlat_lic) ! pointers
262
263	guez	3	! Passage sur la grille physique
264	guez	15	pctsrf = 0.
265	guez	3	pctsrf(:, is_lic) = pack(flic_tmp, dyn_phy)
266	guez	90	! Ad\'equation avec le maque terre/mer
267	guez	73	WHERE (pctsrf(:, is_lic) < EPSFRA) pctsrf(:, is_lic) = 0.
268	guez	13	WHERE (zmasq < EPSFRA) pctsrf(:, is_lic) = 0.
269			pctsrf(:, is_ter) = zmasq
270			where (zmasq > EPSFRA)
271			where (pctsrf(:, is_lic) >= zmasq)
272			pctsrf(:, is_lic) = zmasq
273	guez	3	pctsrf(:, is_ter) = 0.
274			elsewhere
275	guez	13	pctsrf(:, is_ter) = zmasq - pctsrf(:, is_lic)
276	guez	3	where (pctsrf(:, is_ter) < EPSFRA)
277			pctsrf(:, is_ter) = 0.
278	guez	13	pctsrf(:, is_lic) = zmasq
279	guez	3	end where
280			end where
281			end where
282
283	guez	90	! Sous-surface oc\'ean et glace de mer (pour d\'emarrer on met glace
284			! de mer \`a 0) :
285	guez	13	pctsrf(:, is_oce) = 1. - zmasq
286	guez	3	WHERE (pctsrf(:, is_oce) < EPSFRA) pctsrf(:, is_oce) = 0.
287
288	guez	90	! V\'erification que somme des sous-surfaces vaut 1 :
289	guez	15	ji = count(abs(sum(pctsrf, dim = 2) - 1.) > EPSFRA)
290			IF (ji /= 0) then
291	guez	91	PRINT *, 'Bad surface percentages for ', ji, 'points'
292	guez	15	end IF
293	guez	3
294	guez	90	! Calcul interm\'ediaire :
295	guez	3	CALL massdair(p3d, masse)
296
297			print *, 'ALPHAX = ', alphax
298
299	guez	78	forall (l = 1:llm)
300	guez	3	masse(:, 1, l) = SUM(aire_2d(:iim, 1) * masse(:iim, 1, l)) / apoln
301			masse(:, jjm + 1, l) = &
302			SUM(aire_2d(:iim, jjm + 1) * masse(:iim, jjm + 1, l)) / apols
303			END forall
304
305			! Initialisation pour traceurs:
306	guez	5	call iniadvtrac
307	guez	3	itau_phy = 0
308			day_ref = dayref
309			annee_ref = anneeref
310
311	guez	78	CALL geopot(teta, pk , pks, phis, phi)
312	guez	73	CALL caldyn0(ucov, vcov, teta, ps, masse, pk, phis, phi, w, pbaru, &
313	guez	23	pbarv)
314	guez	5	CALL dynredem0("start.nc", dayref, phis)
315	guez	73	CALL dynredem1("start.nc", vcov, ucov, teta, q, masse, ps, itau=0)
316	guez	3
317			! Initialisations :
318			snsrf(:, is_ter) = sn
319			snsrf(:, is_lic) = sn
320			snsrf(:, is_oce) = sn
321			snsrf(:, is_sic) = sn
322			albe(:, is_ter) = 0.08
323			albe(:, is_lic) = 0.6
324			albe(:, is_oce) = 0.5
325			albe(:, is_sic) = 0.6
326			alblw = albe
327	guez	15	evap = 0.
328	guez	99	qsolsrf = 150.
329			tsoil = spread(spread(pack(tsol_2d, dyn_phy), 2, nsoilmx), 3, nbsrf)
330	guez	3	rain_fall = 0.
331			snow_fall = 0.
332			solsw = 165.
333			sollw = -53.
334			t_ancien = 273.15
335			q_ancien = 0.
336			agesno = 0.
337			seaice = 0.
338
339	guez	13	frugs(:, is_oce) = rugmer
340	guez	78	frugs(:, is_ter) = MAX(1e-5, zstd * zsig / 2)
341			frugs(:, is_lic) = MAX(1e-5, zstd * zsig / 2)
342	guez	3	frugs(:, is_sic) = 0.001
343			fder = 0.
344			clwcon = 0.
345			rnebcon = 0.
346			ratqs = 0.
347			run_off_lic_0 = 0.
348	guez	72	sig1 = 0.
349			w01 = 0.
350	guez	3
351	guez	99	call phyredem("startphy.nc", latfi, lonfi, pctsrf, tsoil(:, 1, :), tsoil, &
352			tsoil(:, 1, is_oce), seaice, qsolsrf, pack(qsol_2d, dyn_phy), snsrf, &
353			albe, alblw, evap, rain_fall, snow_fall, solsw, sollw, fder, radsol, &
354			frugs, agesno, zmea, zstd, zsig, zgam, zthe, zpic, zval, t_ancien, &
355			q_ancien, rnebcon, ratqs, clwcon, run_off_lic_0, sig1, w01)
356	guez	3	CALL histclo
357
358			END SUBROUTINE etat0
359
360			end module etat0_mod