phylmd/Mobidic/regr_pr_coefoz.f90

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

  subroutine regr_pr_av_coefoz(ncid, name, julien, v3)

    ! "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 grid_change, only: dyn_phy
    use netcdf, only: nf90_get_var
    use netcdf95, only: nf95_inq_varid, handle_err
    use nr_util, only: assert
    use numer_rec, only: regr1_step_av
    use press_coefoz_m, only: press_in_edg
    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.

    use dimens_m, only: iim, jjm, llm
    use dimphy, only: klon
    use grid_change, only: dyn_phy
    use netcdf, only: nf90_get_var
    use netcdf95, only: nf95_inq_varid, handle_err
    use nr_util, only: assert
    use numer_rec, only: regr1_lint
    use press_coefoz_m, only: plev
    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 ! 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)

    ! 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 subroutine regr_pr_int_coefoz

end module regr_pr_coefoz
1	guez	7	module regr_pr_coefoz
2	guez	3
3	guez	19	! Both procedures of this module read a single Mobidic ozone
4			! coefficient from "coefoz_LMDZ.nc", at the current day, regrid this
5			! coefficient in pressure to the LMDZ vertical grid and pack it to the LMDZ
6			! horizontal "physics" grid.
7			! The input data is a 2D latitude -- pressure field.
8			! The target horizontal LMDZ grid is the "scalar" grid: "rlonv", "rlatu".
9			! We assume that the input data is already on the LMDZ "rlatu"
10			! latitude grid.
11
12	guez	3	implicit none
13
14			contains
15
16	guez	17	subroutine regr_pr_av_coefoz(ncid, name, julien, v3)
17	guez	3
18	guez	7	! "regr_pr_av_coefoz" stands for "regrid pressure averaging
19	guez	10	! coefficient ozone".
20	guez	19	! The target vertical LMDZ grid is the grid of layer boundaries.
21			! The input data does not depend on longitude, but the pressure
22			! at LMDZ layers does.
23			! Therefore, the values on the LMDZ grid do depend on longitude.
24	guez	20	! Regridding in pressure is done by averaging a step function of pressure.
25	guez	3
26			use dimens_m, only: iim, jjm, llm
27			use dimphy, only: klon
28	guez	52	use grid_change, only: dyn_phy
29			use netcdf, only: nf90_get_var
30	guez	7	use netcdf95, only: nf95_inq_varid, handle_err
31	guez	36	use nr_util, only: assert
32	guez	52	use numer_rec, only: regr1_step_av
33	guez	17	use press_coefoz_m, only: press_in_edg
34	guez	19	use pressure_var, only: p3d
35	guez	3
36			integer, intent(in):: ncid ! NetCDF ID of the file
37			character(len=*), intent(in):: name ! of the NetCDF variable
38	guez	7	integer, intent(in):: julien ! jour julien, 1 <= julien <= 360
39	guez	3
40	guez	7	real, intent(out):: v3(:, :) ! (klon, llm)
41			! (ozone coefficient from Mobidic on the "physics" grid)
42			! ("v3(i, k)" is at longitude "xlon(i)", latitude
43	guez	20	! "xlat(i)", in layer "k".)
44	guez	7
45			! Variables local to the procedure:
46
47	guez	20	integer varid, ncerr ! for NetCDF
48
49	guez	7	real v1(jjm + 1, size(press_in_edg) - 1)
50			! (ozone coefficient from "coefoz_LMDZ.nc" at day "julien")
51			! ("v1(j, k)" is at latitude "rlatu(j)" and for
52			! pressure interval "[press_in_edg(k), press_in_edg(k+1)]".)
53
54			real v2(iim + 1, jjm + 1, llm)
55	guez	20	! (ozone coefficient on the "dynamics" grid)
56			! ("v2(i, j, k)" is at longitude "rlonv(i)", latitude
57			! "rlatu(j)" and for pressure interval "[p3d(i, j, k+1), p3d(i, j, k)]".)
58	guez	7
59	guez	20	integer i, j, k
60
61	guez	7	!--------------------------------------------
62
63			call assert(shape(v3) == (/klon, llm/), "regr_pr_av_coefoz")
64
65			call nf95_inq_varid(ncid, name, varid)
66
67			! Get data at the right day from the input file:
68			ncerr = nf90_get_var(ncid, varid, v1, start=(/1, 1, julien/))
69			call handle_err("regr_pr_av_coefoz nf90_get_var " // name, ncerr, ncid)
70	guez	20	! Latitudes are in ascending order in the input file while
71			! "rlatu" is in descending order so we need to invert order:
72	guez	7	v1 = v1(jjm+1:1:-1, :)
73
74			! Regrid in pressure at each horizontal position:
75	guez	19	do j = 1, jjm + 1
76			do i = 1, iim
77			if (dyn_phy(i, j)) then
78			v2(i, j, llm:1:-1) &
79			= regr1_step_av(v1(j, :), press_in_edg, &
80			p3d(i, j, llm+1:1:-1))
81	guez	20	! (invert order of indices because "p3d" is in descending order)
82	guez	19	end if
83			end do
84			end do
85	guez	7
86			forall (k = 1:llm) v3(:, k) = pack(v2(:, :, k), dyn_phy)
87
88			end subroutine regr_pr_av_coefoz
89
90			!***************************************************************
91
92	guez	17	subroutine regr_pr_int_coefoz(ncid, name, julien, top_value, v3)
93	guez	7
94	guez	19	! "regr_pr_int_coefoz" stands for "regrid pressure interpolation
95			! coefficient ozone".
96			! The target vertical LMDZ grid is the grid of mid-layers.
97			! The input data does not depend on longitude, but the pressure
98			! at LMDZ mid-layers does.
99			! Therefore, the values on the LMDZ grid do depend on longitude.
100	guez	7	! Regridding is by linear interpolation.
101
102			use dimens_m, only: iim, jjm, llm
103			use dimphy, only: klon
104	guez	52	use grid_change, only: dyn_phy
105			use netcdf, only: nf90_get_var
106	guez	7	use netcdf95, only: nf95_inq_varid, handle_err
107	guez	36	use nr_util, only: assert
108	guez	52	use numer_rec, only: regr1_lint
109	guez	17	use press_coefoz_m, only: plev
110	guez	19	use pressure_var, only: pls
111	guez	7
112			integer, intent(in):: ncid ! NetCDF ID of the file
113			character(len=*), intent(in):: name ! of the NetCDF variable
114			integer, intent(in):: julien ! jour julien, 1 <= julien <= 360
115
116			real, intent(in):: top_value
117			! (extra value of ozone coefficient at 0 pressure)
118
119			real, intent(out):: v3(:, :) ! (klon, llm)
120	guez	19	! (ozone coefficient from Mobidic on the "physics" grid)
121	guez	7	! ("v3(i, k)" is at longitude "xlon(i)", latitude
122	guez	3	! "xlat(i)", middle of layer "k".)
123
124			! Variables local to the procedure:
125
126	guez	20	integer varid, ncerr ! for NetCDF
127
128	guez	7	real v1(jjm + 1, 0:size(plev))
129			! (ozone coefficient from "coefoz_LMDZ.nc" at day "julien")
130			! ("v1(j, k >=1)" is at latitude "rlatu(j)" and pressure "plev(k)".)
131
132			real v2(iim + 1, jjm + 1, llm)
133	guez	20	! (ozone coefficient on the "dynamics" grid)
134	guez	7	! "v2(i, j, k)" is at longitude "rlonv(i)", latitude
135	guez	20	! "rlatu(j)" and pressure "pls(i, j, k)".)
136	guez	3
137	guez	20	integer i, j, k
138
139	guez	3	!--------------------------------------------
140
141	guez	7	call assert(shape(v3) == (/klon, llm/), "regr_pr_int_coefoz")
142
143	guez	3	call nf95_inq_varid(ncid, name, varid)
144
145	guez	7	! Get data at the right day from the input file:
146			ncerr = nf90_get_var(ncid, varid, v1(:, 1:), start=(/1, 1, julien/))
147			call handle_err("regr_pr_int_coefoz nf90_get_var " // name, ncerr, ncid)
148	guez	20	! Latitudes are in ascending order in the input file while
149			! "rlatu" is in descending order so we need to invert order:
150	guez	7	v1(:, 1:) = v1(jjm+1:1:-1, 1:)
151	guez	3
152	guez	7	! Complete "v1" with the value at 0 pressure:
153			v1(:, 0) = top_value
154	guez	3
155	guez	7	! Regrid in pressure at each horizontal position:
156	guez	19	do j = 1, jjm + 1
157			do i = 1, iim
158			if (dyn_phy(i, j)) then
159			v2(i, j, llm:1:-1) &
160			= regr1_lint(v1(j, :), (/0., plev/), pls(i, j, llm:1:-1))
161	guez	20	! (invert order of indices because "pls" is in descending order)
162	guez	19	end if
163			end do
164			end do
165	guez	7
166			forall (k = 1:llm) v3(:, k) = pack(v2(:, :, k), dyn_phy)
167
168			end subroutine regr_pr_int_coefoz
169
170			end module regr_pr_coefoz