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SUBROUTINE read_map2D(filename, varname, timestep, inverse, varout) |
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! Open file and read one variable for one timestep. |
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! Return variable for the given timestep. |
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USE dimphy |
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USE netcdf |
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USE mod_grid_phy_lmdz |
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USE mod_phys_lmdz_para |
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USE print_control_mod, ONLY: lunout |
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IMPLICIT NONE |
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! Input arguments |
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CHARACTER(len=*), INTENT(IN) :: filename ! name of file to read |
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CHARACTER(len=*), INTENT(IN) :: varname ! name of variable in file |
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INTEGER, INTENT(IN) :: timestep ! actual timestep |
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LOGICAL, INTENT(IN) :: inverse ! TRUE if latitude needs to be inversed |
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! Output argument |
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REAL, DIMENSION(klon), INTENT(OUT) :: varout ! The variable read from file for the given timestep |
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! Local variables |
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INTEGER :: j |
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INTEGER :: nid, nvarid, ierr |
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INTEGER, DIMENSION(3) :: start, count |
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CHARACTER(len=20) :: modname='read_map2D' |
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REAL, DIMENSION(nbp_lon,nbp_lat) :: var_glo2D ! 2D global |
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REAL, DIMENSION(nbp_lon,nbp_lat) :: var_glo2D_tmp ! 2D global |
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REAL, DIMENSION(klon_glo) :: var_glo1D ! 1D global |
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! Read variable from file. Done by master process MPI and master thread OpenMP |
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IF (is_mpi_root .AND. is_omp_root) THEN |
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ierr = NF90_OPEN(trim(filename), NF90_NOWRITE, nid) |
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IF (ierr /= NF90_NOERR) CALL write_err_mess('Problem in opening file') |
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ierr = NF90_INQ_VARID(nid, trim(varname), nvarid) |
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IF (ierr /= NF90_NOERR) CALL write_err_mess('The variable is absent in file') |
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start=(/1,1,timestep/) |
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count=(/nbp_lon,nbp_lat,1/) |
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ierr = NF90_GET_VAR(nid, nvarid, var_glo2D,start,count) |
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IF (ierr /= NF90_NOERR) CALL write_err_mess('Problem in reading varaiable') |
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ierr = NF90_CLOSE(nid) |
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IF (ierr /= NF90_NOERR) CALL write_err_mess('Problem in closing file') |
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! Inverse latitude order |
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IF (inverse) THEN |
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var_glo2D_tmp(:,:) = var_glo2D(:,:) |
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DO j=1, nbp_lat |
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var_glo2D(:,j) = var_glo2D_tmp(:,nbp_lat-j+1) |
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END DO |
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END IF |
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! Transform the global field from 2D to 1D |
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CALL grid2Dto1D_glo(var_glo2D,var_glo1D) |
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WRITE(lunout,*) 'in read_map2D, filename = ', trim(filename) |
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WRITE(lunout,*) 'in read_map2D, varname = ', trim(varname) |
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WRITE(lunout,*) 'in read_map2D, timestep = ', timestep |
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ENDIF |
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! Scatter gloabl 1D variable to all processes |
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CALL scatter(var_glo1D, varout) |
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CONTAINS |
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SUBROUTINE write_err_mess(err_mess) |
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USE print_control_mod, ONLY: lunout |
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IMPLICIT NONE |
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CHARACTER(len=*), INTENT(IN) :: err_mess |
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WRITE(lunout,*) 'Error in read_map2D, filename = ', trim(filename) |
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WRITE(lunout,*) 'Error in read_map2D, varname = ', trim(varname) |
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WRITE(lunout,*) 'Error in read_map2D, timestep = ', timestep |
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CALL abort_physic(modname, err_mess, 1) |
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END SUBROUTINE write_err_mess |
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END SUBROUTINE read_map2D |
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