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! $Id$ |
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module press_coefoz_m |
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implicit none |
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real, pointer, save:: plev(:) |
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! (pressure level of Mobidic input data, converted to Pa, in strictly |
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! ascending order) |
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real, allocatable, save:: press_in_edg(:) |
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! (edges of pressure intervals for Mobidic input data, in Pa, in strictly |
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! ascending order) |
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contains |
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subroutine press_coefoz |
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! This procedure is called once per "gcm" run. |
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! A single thread of the root process reads the pressure levels |
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! from "coefoz_LMDZ.nc" and broadcasts them to the other processes. |
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! We assume that, in "coefoz_LMDZ.nc", the pressure levels are in hPa |
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! and in strictly ascending order. |
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use netcdf95, only: nf95_open, nf95_close, nf95_gw_var, nf95_inq_varid |
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use netcdf, only: nf90_nowrite |
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use mod_phys_lmdz_mpi_data, only: is_mpi_root |
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use mod_phys_lmdz_mpi_transfert, only: bcast_mpi ! broadcast |
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! Variables local to the procedure: |
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integer ncid, varid ! for NetCDF |
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integer n_plev ! number of pressure levels in the input data |
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integer k |
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!--------------------------------------- |
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!$omp single |
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print *, "Call sequence information: press_coefoz" |
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if (is_mpi_root) then |
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call nf95_open("coefoz_LMDZ.nc", nf90_nowrite, ncid) |
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call nf95_inq_varid(ncid, "plev", varid) |
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call nf95_gw_var(ncid, varid, plev) |
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! Convert from hPa to Pa because "paprs" and "pplay" are in Pa: |
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plev = plev * 100. |
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n_plev = size(plev) |
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call nf95_close(ncid) |
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end if |
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call bcast_mpi(n_plev) |
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if (.not. is_mpi_root) allocate(plev(n_plev)) |
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call bcast_mpi(plev) |
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! Compute edges of pressure intervals: |
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allocate(press_in_edg(n_plev + 1)) |
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if (is_mpi_root) then |
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press_in_edg(1) = 0. |
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! We choose edges halfway in logarithm: |
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DO k = 2,n_plev |
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press_in_edg(k) = SQRT(plev(k - 1) * plev(k)) |
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ENDDO |
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press_in_edg(n_plev + 1) = huge(0.) |
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! (infinity, but any value guaranteed to be greater than the |
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! surface pressure would do) |
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end if |
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call bcast_mpi(press_in_edg) |
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!$omp end single |
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end subroutine press_coefoz |
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end module press_coefoz_m |
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