--- trunk/libf/phylmd/o3_mob_ph_m.f90 2008/02/27 13:16:39 3 +++ trunk/libf/phylmd/Mobidic/regr_pr_coefoz.f90 2011/07/01 15:00:48 47 @@ -1,50 +1,170 @@ -module o3_Mob_ph_m +module regr_pr_coefoz + + ! Both procedures of this module read a single Mobidic ozone + ! coefficient from "coefoz_LMDZ.nc", at the current day, regrid this + ! coefficient in pressure to the LMDZ vertical grid and pack it to the LMDZ + ! horizontal "physics" grid. + ! The input data is a 2D latitude -- pressure field. + ! The target horizontal LMDZ grid is the "scalar" grid: "rlonv", "rlatu". + ! We assume that the input data is already on the LMDZ "rlatu" + ! latitude grid. implicit none contains - function o3_Mob_ph(ncid, name) + subroutine regr_pr_av_coefoz(ncid, name, julien, v3) - ! This function reads a single Mobidic ozone parameter from a file and - ! packs it on the "physics" grid. + ! "regr_pr_av_coefoz" stands for "regrid pressure averaging + ! coefficient ozone". + ! The target vertical LMDZ grid is the grid of layer boundaries. + ! The input data does not depend on longitude, but the pressure + ! at LMDZ layers does. + ! Therefore, the values on the LMDZ grid do depend on longitude. + ! Regridding in pressure is done by averaging a step function of pressure. use dimens_m, only: iim, jjm, llm use dimphy, only: klon - use netcdf95, only: nf95_inq_varid, nf90_get_var, handle_err + use netcdf95, only: nf95_inq_varid, handle_err + use netcdf, only: nf90_get_var use grid_change, only: dyn_phy + use nr_util, only: assert + use press_coefoz_m, only: press_in_edg + use l_util, only: regr1_step_av + use pressure_var, only: p3d integer, intent(in):: ncid ! NetCDF ID of the file character(len=*), intent(in):: name ! of the NetCDF variable + integer, intent(in):: julien ! jour julien, 1 <= julien <= 360 + + real, intent(out):: v3(:, :) ! (klon, llm) + ! (ozone coefficient from Mobidic on the "physics" grid) + ! ("v3(i, k)" is at longitude "xlon(i)", latitude + ! "xlat(i)", in layer "k".) + + ! Variables local to the procedure: + + integer varid, ncerr ! for NetCDF + + real v1(jjm + 1, size(press_in_edg) - 1) + ! (ozone coefficient from "coefoz_LMDZ.nc" at day "julien") + ! ("v1(j, k)" is at latitude "rlatu(j)" and for + ! pressure interval "[press_in_edg(k), press_in_edg(k+1)]".) + + real v2(iim + 1, jjm + 1, llm) + ! (ozone coefficient on the "dynamics" grid) + ! ("v2(i, j, k)" is at longitude "rlonv(i)", latitude + ! "rlatu(j)" and for pressure interval "[p3d(i, j, k+1), p3d(i, j, k)]".) + + integer i, j, k + + !-------------------------------------------- + + call assert(shape(v3) == (/klon, llm/), "regr_pr_av_coefoz") + + call nf95_inq_varid(ncid, name, varid) + + ! Get data at the right day from the input file: + ncerr = nf90_get_var(ncid, varid, v1, start=(/1, 1, julien/)) + call handle_err("regr_pr_av_coefoz nf90_get_var " // name, ncerr, ncid) + ! Latitudes are in ascending order in the input file while + ! "rlatu" is in descending order so we need to invert order: + v1 = v1(jjm+1:1:-1, :) + + ! Regrid in pressure at each horizontal position: + do j = 1, jjm + 1 + do i = 1, iim + if (dyn_phy(i, j)) then + v2(i, j, llm:1:-1) & + = regr1_step_av(v1(j, :), press_in_edg, & + p3d(i, j, llm+1:1:-1)) + ! (invert order of indices because "p3d" is in descending order) + end if + end do + end do + + forall (k = 1:llm) v3(:, k) = pack(v2(:, :, k), dyn_phy) + + end subroutine regr_pr_av_coefoz + + !*************************************************************** + + subroutine regr_pr_int_coefoz(ncid, name, julien, top_value, v3) + + ! "regr_pr_int_coefoz" stands for "regrid pressure interpolation + ! coefficient ozone". + ! The target vertical LMDZ grid is the grid of mid-layers. + ! The input data does not depend on longitude, but the pressure + ! at LMDZ mid-layers does. + ! Therefore, the values on the LMDZ grid do depend on longitude. + ! Regridding is by linear interpolation. - real o3_Mob_ph(klon, llm, 12) - ! (ozone parameter from Mobidic on the "physics" grid) - ! (Third dimension is the number of the month in the year. - ! "o3_Mob_ph(i, k, month)" is at longitude "xlon(i)", latitude + use dimens_m, only: iim, jjm, llm + use dimphy, only: klon + use netcdf95, only: nf95_inq_varid, handle_err + use netcdf, only: nf90_get_var + use grid_change, only: dyn_phy + use nr_util, only: assert + use press_coefoz_m, only: plev + use l_util, only: regr1_lint + use pressure_var, only: pls + + integer, intent(in):: ncid ! NetCDF ID of the file + character(len=*), intent(in):: name ! of the NetCDF variable + integer, intent(in):: julien ! jour julien, 1 <= julien <= 360 + + real, intent(in):: top_value + ! (extra value of ozone coefficient at 0 pressure) + + real, intent(out):: v3(:, :) ! (klon, llm) + ! (ozone coefficient from Mobidic on the "physics" grid) + ! ("v3(i, k)" is at longitude "xlon(i)", latitude ! "xlat(i)", middle of layer "k".) ! Variables local to the procedure: - integer varid, ncerr - integer k, month - real o3_Mob_dyn(iim + 1, jjm + 1, llm, 12) - ! (ozone parameter from Mobidic on the "dynamics" grid) - ! Fourth dimension is the number of the month in the year. - ! "o3_Mob_dyn(i, j, k, month)" is at longitude "rlonv(i)", latitude - ! "rlatu(j)", middle of layer "k".) + integer varid, ncerr ! for NetCDF + + real v1(jjm + 1, 0:size(plev)) + ! (ozone coefficient from "coefoz_LMDZ.nc" at day "julien") + ! ("v1(j, k >=1)" is at latitude "rlatu(j)" and pressure "plev(k)".) + + real v2(iim + 1, jjm + 1, llm) + ! (ozone coefficient on the "dynamics" grid) + ! "v2(i, j, k)" is at longitude "rlonv(i)", latitude + ! "rlatu(j)" and pressure "pls(i, j, k)".) + + integer i, j, k !-------------------------------------------- + call assert(shape(v3) == (/klon, llm/), "regr_pr_int_coefoz") + call nf95_inq_varid(ncid, name, varid) - ncerr = nf90_get_var(ncid, varid, o3_Mob_dyn) - call handle_err("o3_Mob_ph nf90_get_var " // name, ncerr, ncid) - ! Latitudes are in increasing order in the input file while - ! "rlatu" is in decreasing order, so invert: - o3_Mob_dyn = o3_Mob_dyn(:, jjm+1:1:-1, :, :) - forall (k = 1:llm, month = 1:12) & - o3_Mob_ph(:, k, month) = pack(o3_Mob_dyn(:, :, k, month), dyn_phy) + ! Get data at the right day from the input file: + ncerr = nf90_get_var(ncid, varid, v1(:, 1:), start=(/1, 1, julien/)) + call handle_err("regr_pr_int_coefoz nf90_get_var " // name, ncerr, ncid) + ! Latitudes are in ascending order in the input file while + ! "rlatu" is in descending order so we need to invert order: + v1(:, 1:) = v1(jjm+1:1:-1, 1:) + + ! Complete "v1" with the value at 0 pressure: + v1(:, 0) = top_value + + ! Regrid in pressure at each horizontal position: + do j = 1, jjm + 1 + do i = 1, iim + if (dyn_phy(i, j)) then + v2(i, j, llm:1:-1) & + = regr1_lint(v1(j, :), (/0., plev/), pls(i, j, llm:1:-1)) + ! (invert order of indices because "pls" is in descending order) + end if + end do + end do + + forall (k = 1:llm) v3(:, k) = pack(v2(:, :, k), dyn_phy) - end function o3_Mob_ph + end subroutine regr_pr_int_coefoz -end module o3_Mob_ph_m +end module regr_pr_coefoz