| 1 | ! $Id$ |
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| 2 | module press_coefoz_m |
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| 3 | |
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| 4 | implicit none |
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| 5 | |
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| 6 | real, pointer, save:: plev(:) |
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| 7 | ! (pressure level of Mobidic input data, converted to Pa, in strictly |
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| 8 | ! ascending order) |
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| 9 | |
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| 10 | real, allocatable, save:: press_in_edg(:) |
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| 11 | ! (edges of pressure intervals for Mobidic input data, in Pa, in strictly |
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| 12 | ! ascending order) |
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| 13 | |
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| 14 | contains |
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| 15 | |
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| 16 | subroutine press_coefoz |
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| 17 | |
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| 18 | ! This procedure is called once per "gcm" run. |
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| 19 | ! A single thread of the root process reads the pressure levels |
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| 20 | ! from "coefoz_LMDZ.nc" and broadcasts them to the other processes. |
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| 21 | |
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| 22 | ! We assume that, in "coefoz_LMDZ.nc", the pressure levels are in hPa |
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| 23 | ! and in strictly ascending order. |
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| 24 | |
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| 25 | use netcdf95, only: nf95_open, nf95_close, nf95_gw_var, nf95_inq_varid |
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| 26 | use netcdf, only: nf90_nowrite |
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| 27 | |
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| 28 | use mod_phys_lmdz_mpi_data, only: is_mpi_root |
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| 29 | use mod_phys_lmdz_mpi_transfert, only: bcast_mpi ! broadcast |
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| 30 | |
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| 31 | ! Variables local to the procedure: |
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| 32 | integer ncid, varid ! for NetCDF |
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| 33 | integer n_plev ! number of pressure levels in the input data |
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| 34 | integer k |
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| 35 | |
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| 36 | !--------------------------------------- |
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| 37 | |
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| 38 | !$omp single |
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| 39 | print *, "Call sequence information: press_coefoz" |
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| 40 | |
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| 41 | if (is_mpi_root) then |
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| 42 | call nf95_open("coefoz_LMDZ.nc", nf90_nowrite, ncid) |
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| 43 | |
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| 44 | call nf95_inq_varid(ncid, "plev", varid) |
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| 45 | call nf95_gw_var(ncid, varid, plev) |
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| 46 | ! Convert from hPa to Pa because "paprs" and "pplay" are in Pa: |
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| 47 | plev = plev * 100. |
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| 48 | n_plev = size(plev) |
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| 49 | |
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| 50 | call nf95_close(ncid) |
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| 51 | end if |
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| 52 | |
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| 53 | call bcast_mpi(n_plev) |
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| 54 | if (.not. is_mpi_root) allocate(plev(n_plev)) |
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| 55 | call bcast_mpi(plev) |
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| 56 | |
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| 57 | ! Compute edges of pressure intervals: |
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| 58 | allocate(press_in_edg(n_plev + 1)) |
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| 59 | if (is_mpi_root) then |
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| 60 | press_in_edg(1) = 0. |
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| 61 | ! We choose edges halfway in logarithm: |
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| 62 | DO k = 2,n_plev |
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| 63 | press_in_edg(k) = SQRT(plev(k - 1) * plev(k)) |
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| 64 | ENDDO |
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| 65 | press_in_edg(n_plev + 1) = huge(0.) |
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| 66 | ! (infinity, but any value guaranteed to be greater than the |
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| 67 | ! surface pressure would do) |
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| 68 | end if |
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| 69 | call bcast_mpi(press_in_edg) |
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| 70 | !$omp end single |
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| 71 | |
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| 72 | end subroutine press_coefoz |
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| 73 | |
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| 74 | end module press_coefoz_m |
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