LCOV - code coverage report
Current view: | top level - physics/cam - co2_data_flux.F90 (source / functions) |  |  | Hit | Total | Coverage
Test: | coverage.info |  | Lines: | 0 | 40 | 0.0 %
Date: | 2024-12-17 17:57:11 |  | Functions: | 0 | 4 | 0.0 %

              Line data    Source code
           1             : module co2_data_flux
           2             :
           3             : !-------------------------------------------------------------------------------
           4             : ! utilities for reading and interpolating co2 surface fluxes
           5             : !-------------------------------------------------------------------------------
           6             :
           7             :    use shr_kind_mod,     only: r8 => shr_kind_r8, cl => shr_kind_cl
           8             :    use input_data_utils, only: time_coordinate
           9             :    use cam_abortutils,   only: endrun
          10             :
          11             :    implicit none
          12             :    private
          13             :    save
          14             :
          15             :    ! Public interfaces
          16             :    public co2_data_flux_type
          17             :
          18             :    public co2_data_flux_init
          19             :    public co2_data_flux_advance
          20             :
          21             : !-------------------------------------------------------------------------------
          22             :
          23             :    type :: co2_data_flux_type
          24             :       character(len=cl)     :: filename
          25             :       character(len=cl)     :: varname
          26             :       logical               :: initialized
          27             :       type(time_coordinate) :: time_coord
          28             :       real(r8), pointer     :: co2bdy(:,:,:)   ! bracketing data     (pcols,begchunk:endchunk,2)
          29             :       real(r8), pointer     :: co2flx(:,:)     ! Interpolated output (pcols,begchunk:endchunk)
          30             :    end type co2_data_flux_type
          31             :
          32             :    ! dimension names for physics grid (physgrid)
          33             :    logical           :: dimnames_set = .false.
          34             :    character(len=8)  :: dim1name, dim2name
          35             :
          36             : !===============================================================================
          37             : contains
          38             : !===============================================================================
          39             :
          40           0 : subroutine co2_data_flux_init (input_file, varname, xin)
          41             :
          42             : !-------------------------------------------------------------------------------
          43             : ! Initialize co2_data_flux_type instance
          44             : !   including initial read of input and interpolation to the current timestep
          45             : !-------------------------------------------------------------------------------
          46             :
          47             :    use ioFileMod,        only: getfil
          48             :    use ppgrid,           only: begchunk, endchunk, pcols
          49             :    use cam_grid_support, only: cam_grid_id, cam_grid_check
          50             :    use cam_grid_support, only: cam_grid_get_dim_names
          51             :
          52             :    ! Arguments
          53             :    character(len=*),          intent(in)    :: input_file
          54             :    character(len=*),          intent(in)    :: varname
          55             :    type(co2_data_flux_type),  intent(inout) :: xin
          56             :
          57             :    ! Local variables
          58             :    integer  :: grid_id
          59             :    real(r8) :: dtime
          60             :    character(len=*), parameter :: subname = 'co2_data_flux_init'
          61             :    !----------------------------------------------------------------------------
          62             :
          63           0 :    if (.not. dimnames_set) then
          64           0 :       grid_id = cam_grid_id('physgrid')
          65           0 :       if (.not. cam_grid_check(grid_id)) then
          66           0 :          call endrun(subname // ': ERROR: no "physgrid" grid')
          67             :       endif
          68           0 :       call cam_grid_get_dim_names(grid_id, dim1name, dim2name)
          69           0 :       dimnames_set = .true.
          70             :    end if
          71             :
          72           0 :    call getfil(input_file, xin%filename)
          73           0 :    xin%varname = varname
          74           0 :    xin%initialized = .false.
          75             :
          76           0 :    dtime = 1.0_r8 - 200.0_r8 / 86400.0_r8
          77           0 :    call xin%time_coord%initialize(input_file, delta_days=dtime)
          78             :
          79             :    allocate( xin%co2bdy(pcols,begchunk:endchunk,2), &
          80           0 :              xin%co2flx(pcols,begchunk:endchunk)    )
          81             :
          82           0 :    call co2_data_flux_advance(xin)
          83             :
          84           0 :    xin%initialized = .true.
          85             :
          86           0 : end subroutine co2_data_flux_init
          87             :
          88             : !===============================================================================
          89             :
          90           0 : subroutine co2_data_flux_advance (xin)
          91             :
          92             : !-------------------------------------------------------------------------------
          93             : ! Advance the contents of a co2_data_flux_type instance
          94             : !   including reading new data, if necessary
          95             : !-------------------------------------------------------------------------------
          96             :
          97           0 :    use cam_pio_utils,    only: cam_pio_openfile
          98             :    use ncdio_atm,        only: infld
          99             :    use pio,              only: file_desc_t, pio_nowrite, pio_closefile
         100             :    use ppgrid,           only: begchunk, endchunk, pcols
         101             :
         102             :    ! Arguments
         103             :    type(co2_data_flux_type),  intent(inout) :: xin
         104             :
         105             :    ! Local variables
         106             :    character(len=*), parameter :: subname = 'co2_data_flux_advance'
         107             :    logical           :: read_data
         108             :    integer           :: indx2_pre_adv
         109             :    type(file_desc_t) :: fh_co2_data_flux
         110             :    logical           :: found
         111             :
         112             :    !----------------------------------------------------------------------------
         113             :
         114           0 :    read_data = xin%time_coord%read_more() .or. .not. xin%initialized
         115             :
         116           0 :    indx2_pre_adv = xin%time_coord%indxs(2)
         117             :
         118           0 :    call xin%time_coord%advance()
         119             :
         120           0 :    if ( read_data ) then
         121             :
         122           0 :       call cam_pio_openfile(fh_co2_data_flux, trim(xin%filename), PIO_NOWRITE)
         123             :
         124             :       ! read time-level 1
         125             :       ! skip the read if the needed vals are present in time-level 2
         126           0 :       if (xin%initialized .and. xin%time_coord%indxs(1) == indx2_pre_adv) then
         127           0 :          xin%co2bdy(:,:,1) = xin%co2bdy(:,:,2)
         128             :       else
         129             :          call infld(trim(xin%varname), fh_co2_data_flux, dim1name, dim2name, &
         130           0 :               1, pcols, begchunk, endchunk, xin%co2bdy(:,:,1), found, &
         131           0 :               gridname='physgrid', timelevel=xin%time_coord%indxs(1))
         132           0 :          if (.not. found) then
         133           0 :             call endrun(subname // ': ERROR: ' // trim(xin%varname) // ' not found')
         134             :          endif
         135             :       endif
         136             :
         137             :       ! read time-level 2
         138             :       call infld(trim(xin%varname), fh_co2_data_flux, dim1name, dim2name, &
         139           0 :            1, pcols, begchunk, endchunk, xin%co2bdy(:,:,2), found, &
         140           0 :            gridname='physgrid', timelevel=xin%time_coord%indxs(2))
         141           0 :       if (.not. found) then
         142           0 :          call endrun(subname // ': ERROR: ' // trim(xin%varname) // ' not found')
         143             :       endif
         144             :
         145           0 :       call pio_closefile(fh_co2_data_flux)
         146             :    endif
         147             :
         148             :    ! interpolate between time-levels
         149             :    ! If time:bounds is in the dataset, and the dataset calendar is compatible with CAM's,
         150             :    ! then the time_coordinate class will produce time_coord%wghts(2) == 0.0,
         151             :    ! generating fluxes that are piecewise constant in time.
         152             :
         153           0 :    if (xin%time_coord%wghts(2) == 0.0_r8) then
         154           0 :       xin%co2flx(:,:) = xin%co2bdy(:,:,1)
         155             :    else
         156           0 :       xin%co2flx(:,:) = xin%co2bdy(:,:,1) + &
         157           0 :            xin%time_coord%wghts(2) * (xin%co2bdy(:,:,2) - xin%co2bdy(:,:,1))
         158             :    endif
         159             :
         160           0 : end subroutine co2_data_flux_advance
         161             :
         162             : !===============================================================================
         163             :
         164           0 : end module co2_data_flux

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