source: LMDZ6/trunk/libf/phylmd/readchlorophyll.F90 @ 4744

Last change on this file since 4744 was 4489, checked in by lguez, 19 months ago

Merge LMDZ_ECRad branch back into trunk!

File size: 3.9 KB
Line 
1!
2! $Id$
3!
4!--This routine is to be tested with MPI / OMP parallelism
5!--OB 26/03/2018
6
7SUBROUTINE readchlorophyll(debut)
8
9    USE netcdf95, ONLY: nf95_close, nf95_gw_var, nf95_inq_dimid, nf95_inq_varid, nf95_open
10    USE netcdf, ONLY: nf90_get_var, nf90_noerr, nf90_nowrite
11    USE phys_cal_mod, ONLY: mth_cur
12    USE mod_grid_phy_lmdz, ONLY: nbp_lon, nbp_lat, klon_glo, grid2dto1d_glo
13    USE mod_phys_lmdz_mpi_data, ONLY: is_mpi_root
14    USE mod_phys_lmdz_omp_data, ONLY: is_omp_root
15    USE mod_phys_lmdz_para, ONLY: scatter
16    USE phys_state_var_mod, ONLY: chl_con
17    USE print_control_mod, ONLY: prt_level,lunout
18
19    IMPLICIT NONE
20
21    INCLUDE "YOMCST.h"
22
23! Variable input
24    LOGICAL debut
25
26! Variables locales
27    INTEGER n_lat   ! number of latitudes in the input data
28    INTEGER n_lon   ! number of longitudes in the input data
29    INTEGER n_lev   ! number of levels in the input data
30    INTEGER n_month ! number of months in the input data
31    REAL, ALLOCATABLE :: latitude(:)
32    REAL, ALLOCATABLE :: longitude(:)
33    REAL, ALLOCATABLE :: time(:)
34    INTEGER i, k
35    INTEGER, SAVE :: mth_pre
36!$OMP THREADPRIVATE(mth_pre)
37
38! Champs reconstitues
39    REAL, ALLOCATABLE :: chlorocon(:, :, :)
40    REAL, ALLOCATABLE :: chlorocon_mois(:, :)
41    REAL, ALLOCATABLE :: chlorocon_mois_glo(:)
42
43! For NetCDF:
44    INTEGER ncid_in  ! IDs for input files
45    INTEGER varid, ncerr
46
47!--------------------------------------------------------
48    CHARACTER (len = 20)  :: modname = 'readchlorophyll'
49    CHARACTER (len = 80)  :: abort_message
50
51!--only read file if beginning of run or start of new month
52    IF (debut.OR.mth_cur.NE.mth_pre) THEN
53
54    IF (is_mpi_root.AND.is_omp_root) THEN
55
56    CALL nf95_open("chlorophyll.nc", nf90_nowrite, ncid_in)
57
58    CALL nf95_inq_varid(ncid_in, "lon", varid)
59    CALL nf95_gw_var(ncid_in, varid, longitude)
60    n_lon = size(longitude)
61    IF (n_lon.NE.nbp_lon) THEN
62       abort_message='Le nombre de lon n est pas egal a nbp_lon'
63       CALL abort_physic(modname,abort_message,1)
64    ENDIF
65
66    CALL nf95_inq_varid(ncid_in, "lat", varid)
67    CALL nf95_gw_var(ncid_in, varid, latitude)
68    n_lat = size(latitude)
69    IF (n_lat.NE.nbp_lat) THEN
70       abort_message='Le nombre de lat n est pas egal a jnbp_lat'
71       CALL abort_physic(modname,abort_message,1)
72    ENDIF
73
74    CALL nf95_inq_varid(ncid_in, "time", varid)
75    CALL nf95_gw_var(ncid_in, varid, time)
76    n_month = size(time)
77    IF (n_month.NE.12) THEN
78       abort_message='Le nombre de month n est pas egal a 12'
79       CALL abort_physic(modname,abort_message,1)
80    ENDIF
81
82    IF (.not.ALLOCATED(chlorocon))          ALLOCATE(chlorocon(n_lon, n_lat, n_month))
83    IF (.not.ALLOCATED(chlorocon_mois))     ALLOCATE(chlorocon_mois(n_lon, n_lat))
84    IF (.not.ALLOCATED(chlorocon_mois_glo)) ALLOCATE(chlorocon_mois_glo(klon_glo))
85
86!--reading stratospheric AOD at 550 nm
87    CALL nf95_inq_varid(ncid_in, "CHL", varid)
88    ncerr = nf90_get_var(ncid_in, varid, chlorocon)
89    WRITE(lunout,*)'code erreur readchlorophyll=', ncerr, varid
90
91    CALL nf95_close(ncid_in)
92
93!---select the correct month
94    IF (mth_cur.LT.1.OR.mth_cur.GT.12) THEN
95      WRITE(lunout,*)'probleme avec le mois dans readchlorophyll =', mth_cur
96    ENDIF
97    chlorocon_mois(:,:) = chlorocon(:,:,mth_cur)
98
99!---reduce to a klon_glo grid
100    CALL grid2dTo1d_glo(chlorocon_mois,chlorocon_mois_glo)
101
102    WRITE(lunout,*)"chrolophyll current month",mth_cur
103    DO i=1,klon_glo
104!      if(isnan(chlorocon_mois_glo(i)))then ! isnan() is not in the Fortran standard...
105!      Another way to check for NaN:
106       IF (chlorocon_mois_glo(i).NE.chlorocon_mois_glo(i)) chlorocon_mois_glo(i)=0.
107    ENDDO
108
109!    DEALLOCATE(chlorocon)
110!    DEALLOCATE(chlorocon_mois)
111!    DEALLOCATE(chlorocon_mois_glo)
112 
113    ENDIF !--is_mpi_root and is_omp_root
114
115!--scatter on all proc
116    CALL scatter(chlorocon_mois_glo,chl_con)
117
118!--keep memory of previous month
119    mth_pre=mth_cur
120
121    ENDIF !--debut ou nouveau mois
122
123END SUBROUTINE readchlorophyll
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