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MODULE obs_oper
!!======================================================================
!! *** MODULE obs_oper ***
!! Observation diagnostics: Observation operators for various observation
!! types
!!======================================================================
!!----------------------------------------------------------------------
!! obs_prof_opt : Compute the model counterpart of profile data
!! obs_surf_opt : Compute the model counterpart of surface data
!!----------------------------------------------------------------------
USE obs_inter_sup ! Interpolation support
USE obs_inter_h2d, ONLY : obs_int_h2d, obs_int_h2d_init ! Horizontal interpolation to the obs pt
USE obs_averg_h2d, ONLY : obs_avg_h2d, obs_avg_h2d_init, obs_max_fpsize ! Horizontal averaging to the obs footprint
USE obs_inter_z1d, ONLY : obs_int_z1d, obs_int_z1d_spl ! Vertical interpolation to the obs pt
USE obs_const , ONLY : obfillflt ! Obs fill value
USE dom_oce, ONLY : glamt, glamf, gphit, gphif ! lat/lon of ocean grid-points
USE lib_mpp, ONLY : ctl_warn, ctl_stop ! Warning and stopping routines
USE sbcdcy, ONLY : sbc_dcy, nday_qsr ! For calculation of where it is night-time
USE obs_grid, ONLY : obs_level_search
!
USE par_kind , ONLY : wp ! Precision variables
USE in_out_manager ! I/O manager
IMPLICIT NONE
PRIVATE
PUBLIC obs_prof_opt !: Compute the model counterpart of profile obs
PUBLIC obs_surf_opt !: Compute the model counterpart of surface obs
INTEGER, PARAMETER, PUBLIC :: imaxavtypes = 20 !: Max number of daily avgd obs types
!! * Substitutions
# include "do_loop_substitute.h90"
!!----------------------------------------------------------------------
!! NEMO/OCE 4.0 , NEMO Consortium (2018)
!! $Id: obs_oper.F90 14056 2020-12-03 14:08:29Z ayoung $
!! Software governed by the CeCILL license (see ./LICENSE)
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE obs_prof_opt( prodatqc, kt, kpi, kpj, kpk, &
& kit000, kdaystp, kvar, &
& pvar, pgdept, pgdepw, &
& pmask, &
& plam, pphi, &
& k1dint, k2dint, kdailyavtypes )
!!-----------------------------------------------------------------------
!! *** ROUTINE obs_pro_opt ***
!!
!! ** Purpose : Compute the model counterpart of profiles
!! data by interpolating from the model grid to the
!! observation point.
!!
!! ** Method : Linearly interpolate to each observation point using
!! the model values at the corners of the surrounding grid box.
!!
!! First, a vertical profile of horizontally interpolated model
!! now values is computed at the obs (lon, lat) point.
!! Several horizontal interpolation schemes are available:
!! - distance-weighted (great circle) (k2dint = 0)
!! - distance-weighted (small angle) (k2dint = 1)
!! - bilinear (geographical grid) (k2dint = 2)
!! - bilinear (quadrilateral grid) (k2dint = 3)
!! - polynomial (quadrilateral grid) (k2dint = 4)
!!
!! Next, the vertical profile is interpolated to the
!! data depth points. Two vertical interpolation schemes are
!! available:
!! - linear (k1dint = 0)
!! - Cubic spline (k1dint = 1)
!!
!! For the cubic spline the 2nd derivative of the interpolating
!! polynomial is computed before entering the vertical interpolation
!! routine.
!!
!! If the logical is switched on, the model equivalent is
!! a daily mean model temperature field. So, we first compute
!! the mean, then interpolate only at the end of the day.
!!
!! Note: in situ temperature observations must be converted
!! to potential temperature (the model variable) prior to
!! assimilation.
!!
!! ** Action :
!!
!! History :
!! ! 97-11 (A. Weaver, S. Ricci, N. Daget)
!! ! 06-03 (G. Smith) NEMOVAR migration
!! ! 06-10 (A. Weaver) Cleanup
!! ! 07-01 (K. Mogensen) Merge of temperature and salinity
!! ! 07-03 (K. Mogensen) General handling of profiles
!! ! 15-02 (M. Martin) Combined routine for all profile types
!! ! 17-02 (M. Martin) Include generalised vertical coordinate changes
!!-----------------------------------------------------------------------
USE obs_profiles_def ! Definition of storage space for profile obs.
IMPLICIT NONE
TYPE(obs_prof), INTENT(inout) :: prodatqc ! Subset of profile data passing QC
INTEGER , INTENT(in ) :: kt ! Time step
INTEGER , INTENT(in ) :: kpi, kpj, kpk ! Model grid parameters
INTEGER , INTENT(in ) :: kit000 ! Number of the first time step (kit000-1 = restart time)
INTEGER , INTENT(in ) :: k1dint ! Vertical interpolation type (see header)
INTEGER , INTENT(in ) :: k2dint ! Horizontal interpolation type (see header)
INTEGER , INTENT(in ) :: kdaystp ! Number of time steps per day
INTEGER , INTENT(in ) :: kvar ! Number of variables in prodatqc
REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj,kpk) :: pvar ! Model field
REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj,kpk) :: pmask ! Land-sea mask
REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj) :: plam ! Model longitude
REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj) :: pphi ! Model latitudes
REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj,kpk) :: pgdept, pgdepw ! depth of T and W levels
INTEGER, DIMENSION(imaxavtypes), OPTIONAL :: kdailyavtypes ! Types for daily averages
!! * Local declarations
INTEGER :: ji
INTEGER :: jj
INTEGER :: jk
INTEGER :: jobs
INTEGER :: inrc
INTEGER :: ipro
INTEGER :: idayend
INTEGER :: ista
INTEGER :: iend
INTEGER :: iobs
INTEGER :: iin, ijn, ikn, ik ! looping indices over interpolation nodes
INTEGER :: inum_obs
INTEGER, DIMENSION(imaxavtypes) :: &
& idailyavtypes
INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: &
& igrdi, &
& igrdj
INTEGER, ALLOCATABLE, DIMENSION(:) :: iv_indic
REAL(KIND=wp) :: zlam
REAL(KIND=wp) :: zphi
REAL(KIND=wp) :: zdaystp
REAL(KIND=wp), DIMENSION(kpk) :: &
& zobsk, &
& zobs2k
REAL(KIND=wp), DIMENSION(2,2,1) :: &
& zweig1, &
& zweig
REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: &
& zmask, &
& zint, &
& zinm, &
& zgdept, &
& zgdepw
REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: &
& zglam, &
& zgphi
REAL(KIND=wp), DIMENSION(1) :: zmsk
REAL(KIND=wp), DIMENSION(:,:,:), ALLOCATABLE :: interp_corner
LOGICAL :: ld_dailyav
!------------------------------------------------------------------------
! Local initialization
!------------------------------------------------------------------------
! Record and data counters
inrc = kt - kit000 + 2
ipro = prodatqc%npstp(inrc)
! Daily average types
ld_dailyav = .FALSE.
IF ( PRESENT(kdailyavtypes) ) THEN
idailyavtypes(:) = kdailyavtypes(:)
IF ( ANY (idailyavtypes(:) /= -1) ) ld_dailyav = .TRUE.
ELSE
idailyavtypes(:) = -1
ENDIF
! Daily means are calculated for values over timesteps:
! [1 <= kt <= kdaystp], [kdaystp+1 <= kt <= 2*kdaystp], ...
idayend = MOD( kt - kit000 + 1, kdaystp )
IF ( ld_dailyav ) THEN
! Initialize daily mean for first timestep of the day
IF ( idayend == 1 .OR. kt == 0 ) THEN
DO_3D( 1, 1, 1, 1, 1, jpk )
prodatqc%vdmean(ji,jj,jk,kvar) = 0.0
END_3D
ENDIF
DO_3D( 1, 1, 1, 1, 1, jpk )
! Increment field 1 for computing daily mean
prodatqc%vdmean(ji,jj,jk,kvar) = prodatqc%vdmean(ji,jj,jk,kvar) &
& + pvar(ji,jj,jk)
END_3D
! Compute the daily mean at the end of day
zdaystp = 1.0 / REAL( kdaystp )
IF ( idayend == 0 ) THEN
IF (lwp) WRITE(numout,*) 'Calculating prodatqc%vdmean on time-step: ',kt
CALL FLUSH(numout)
DO_3D( 1, 1, 1, 1, 1, jpk )
prodatqc%vdmean(ji,jj,jk,kvar) = prodatqc%vdmean(ji,jj,jk,kvar) &
& * zdaystp
END_3D
ENDIF
ENDIF
! Get the data for interpolation
ALLOCATE( &
& igrdi(2,2,ipro), &
& igrdj(2,2,ipro), &
& zglam(2,2,ipro), &
& zgphi(2,2,ipro), &
& zmask(2,2,kpk,ipro), &
& zint(2,2,kpk,ipro), &
& zgdept(2,2,kpk,ipro), &
& zgdepw(2,2,kpk,ipro) &
& )
DO jobs = prodatqc%nprofup + 1, prodatqc%nprofup + ipro
iobs = jobs - prodatqc%nprofup
igrdi(1,1,iobs) = prodatqc%mi(jobs,kvar)-1
igrdj(1,1,iobs) = prodatqc%mj(jobs,kvar)-1
igrdi(1,2,iobs) = prodatqc%mi(jobs,kvar)-1
igrdj(1,2,iobs) = prodatqc%mj(jobs,kvar)
igrdi(2,1,iobs) = prodatqc%mi(jobs,kvar)
igrdj(2,1,iobs) = prodatqc%mj(jobs,kvar)-1
igrdi(2,2,iobs) = prodatqc%mi(jobs,kvar)
igrdj(2,2,iobs) = prodatqc%mj(jobs,kvar)
END DO
! Initialise depth arrays
zgdept(:,:,:,:) = 0.0
zgdepw(:,:,:,:) = 0.0
CALL obs_int_comm_2d( 2, 2, ipro, kpi, kpj, igrdi, igrdj, plam, zglam )
CALL obs_int_comm_2d( 2, 2, ipro, kpi, kpj, igrdi, igrdj, pphi, zgphi )
CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pmask, zmask )
CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pvar, zint )
CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pgdept, zgdept )
CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pgdepw, zgdepw )
! At the end of the day also get interpolated means
IF ( ld_dailyav .AND. idayend == 0 ) THEN
ALLOCATE( zinm(2,2,kpk,ipro) )
CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, &
& prodatqc%vdmean(:,:,:,kvar), zinm )
ENDIF
! Return if no observations to process
! Has to be done after comm commands to ensure processors
! stay in sync
IF ( ipro == 0 ) RETURN
DO jobs = prodatqc%nprofup + 1, prodatqc%nprofup + ipro
iobs = jobs - prodatqc%nprofup
IF ( kt /= prodatqc%mstp(jobs) ) THEN
IF(lwp) THEN
WRITE(numout,*)
WRITE(numout,*) ' E R R O R : Observation', &
& ' time step is not consistent with the', &
& ' model time step'
WRITE(numout,*) ' ========='
WRITE(numout,*)
WRITE(numout,*) ' Record = ', jobs, &
& ' kt = ', kt, &
& ' mstp = ', prodatqc%mstp(jobs), &
& ' ntyp = ', prodatqc%ntyp(jobs)
ENDIF
CALL ctl_stop( 'obs_pro_opt', 'Inconsistent time' )
ENDIF
zlam = prodatqc%rlam(jobs)
zphi = prodatqc%rphi(jobs)
! Horizontal weights
! Masked values are calculated later.
IF ( prodatqc%npvend(jobs,kvar) > 0 ) THEN
CALL obs_int_h2d_init( 1, 1, k2dint, zlam, zphi, &
& zglam(:,:,iobs), zgphi(:,:,iobs), &
& zmask(:,:,1,iobs), zweig1, zmsk )
ENDIF
IF ( prodatqc%npvend(jobs,kvar) > 0 ) THEN
zobsk(:) = obfillflt
IF ( ANY (idailyavtypes(:) == prodatqc%ntyp(jobs)) ) THEN
IF ( idayend == 0 ) THEN
! Daily averaged data
! vertically interpolate all 4 corners
ista = prodatqc%npvsta(jobs,kvar)
iend = prodatqc%npvend(jobs,kvar)
inum_obs = iend - ista + 1
ALLOCATE(interp_corner(2,2,inum_obs),iv_indic(inum_obs))
DO iin=1,2
DO ijn=1,2
IF ( k1dint == 1 ) THEN
CALL obs_int_z1d_spl( kpk, &
& zinm(iin,ijn,:,iobs), &
& zobs2k, zgdept(iin,ijn,:,iobs), &
& zmask(iin,ijn,:,iobs))
ENDIF
CALL obs_level_search(kpk, &
& zgdept(iin,ijn,:,iobs), &
& inum_obs, prodatqc%var(kvar)%vdep(ista:iend), &
& iv_indic)
CALL obs_int_z1d(kpk, iv_indic, k1dint, inum_obs, &
& prodatqc%var(kvar)%vdep(ista:iend), &
& zinm(iin,ijn,:,iobs), &
& zobs2k, interp_corner(iin,ijn,:), &
& zgdept(iin,ijn,:,iobs), &
& zmask(iin,ijn,:,iobs))
ENDDO
ENDDO
ENDIF !idayend
ELSE
! Point data
! vertically interpolate all 4 corners
ista = prodatqc%npvsta(jobs,kvar)
iend = prodatqc%npvend(jobs,kvar)
inum_obs = iend - ista + 1
ALLOCATE(interp_corner(2,2,inum_obs), iv_indic(inum_obs))
DO iin=1,2
DO ijn=1,2
IF ( k1dint == 1 ) THEN
CALL obs_int_z1d_spl( kpk, &
& zint(iin,ijn,:,iobs),&
& zobs2k, zgdept(iin,ijn,:,iobs), &
& zmask(iin,ijn,:,iobs))
ENDIF
CALL obs_level_search(kpk, &
& zgdept(iin,ijn,:,iobs),&
& inum_obs, prodatqc%var(kvar)%vdep(ista:iend), &
& iv_indic)
CALL obs_int_z1d(kpk, iv_indic, k1dint, inum_obs, &
& prodatqc%var(kvar)%vdep(ista:iend), &
& zint(iin,ijn,:,iobs), &
& zobs2k,interp_corner(iin,ijn,:), &
& zgdept(iin,ijn,:,iobs), &
& zmask(iin,ijn,:,iobs) )
ENDDO
ENDDO
ENDIF
!-------------------------------------------------------------
! Compute the horizontal interpolation for every profile level
!-------------------------------------------------------------
DO ikn=1,inum_obs
iend=ista+ikn-1
zweig(:,:,1) = 0._wp
! This code forces the horizontal weights to be
! zero IF the observation is below the bottom of the
! corners of the interpolation nodes, Or if it is in
! the mask. This is important for observations near
! steep bathymetry
DO iin=1,2
DO ijn=1,2
depth_loop: DO ik=kpk,2,-1
IF(zmask(iin,ijn,ik-1,iobs ) > 0.9 )THEN
zweig(iin,ijn,1) = &
& zweig1(iin,ijn,1) * &
& MAX( SIGN(1._wp,(zgdepw(iin,ijn,ik,iobs) ) &
& - prodatqc%var(kvar)%vdep(iend)),0._wp)
EXIT depth_loop
ENDIF
ENDDO depth_loop
ENDDO
ENDDO
CALL obs_int_h2d( 1, 1, zweig, interp_corner(:,:,ikn), &
& prodatqc%var(kvar)%vmod(iend:iend) )
! Set QC flag for any observations found below the bottom
! needed as the check here is more strict than that in obs_prep
IF (sum(zweig) == 0.0_wp) prodatqc%var(kvar)%nvqc(iend:iend)=4
ENDDO
DEALLOCATE(interp_corner,iv_indic)
ENDIF
ENDDO
! Deallocate the data for interpolation
DEALLOCATE( &
& igrdi, &
& igrdj, &
& zglam, &
& zgphi, &
& zmask, &
& zint, &
& zgdept, &
& zgdepw &
& )
! At the end of the day also get interpolated means
IF ( ld_dailyav .AND. idayend == 0 ) THEN
DEALLOCATE( zinm )
ENDIF
IF ( kvar == prodatqc%nvar ) THEN
prodatqc%nprofup = prodatqc%nprofup + ipro
ENDIF
END SUBROUTINE obs_prof_opt
SUBROUTINE obs_surf_opt( surfdataqc, kt, kpi, kpj, &
& kit000, kdaystp, psurf, psurfmask, &
& k2dint, ldnightav, plamscl, pphiscl, &
& lindegrees )
!!-----------------------------------------------------------------------
!!
!! *** ROUTINE obs_surf_opt ***
!!
!! ** Purpose : Compute the model counterpart of surface
!! data by interpolating from the model grid to the
!! observation point.
!!
!! ** Method : Linearly interpolate to each observation point using
!! the model values at the corners of the surrounding grid box.
!!
!! The new model value is first computed at the obs (lon, lat) point.
!!
!! Several horizontal interpolation schemes are available:
!! - distance-weighted (great circle) (k2dint = 0)
!! - distance-weighted (small angle) (k2dint = 1)
!! - bilinear (geographical grid) (k2dint = 2)
!! - bilinear (quadrilateral grid) (k2dint = 3)
!! - polynomial (quadrilateral grid) (k2dint = 4)
!!
!! Two horizontal averaging schemes are also available:
!! - weighted radial footprint (k2dint = 5)
!! - weighted rectangular footprint (k2dint = 6)
!!
!!
!! ** Action :
!!
!! History :
!! ! 07-03 (A. Weaver)
!! ! 15-02 (M. Martin) Combined routine for surface types
!! ! 17-03 (M. Martin) Added horizontal averaging options
!!-----------------------------------------------------------------------
USE obs_surf_def ! Definition of storage space for surface observations
IMPLICIT NONE
TYPE(obs_surf), INTENT(INOUT) :: &
& surfdataqc ! Subset of surface data passing QC
INTEGER, INTENT(IN) :: kt ! Time step
INTEGER, INTENT(IN) :: kpi ! Model grid parameters
INTEGER, INTENT(IN) :: kpj
INTEGER, INTENT(IN) :: kit000 ! Number of the first time step
! (kit000-1 = restart time)
INTEGER, INTENT(IN) :: kdaystp ! Number of time steps per day
INTEGER, INTENT(IN) :: k2dint ! Horizontal interpolation type (see header)
REAL(wp), INTENT(IN), DIMENSION(kpi,kpj) :: &
& psurf, & ! Model surface field
& psurfmask ! Land-sea mask
LOGICAL, INTENT(IN) :: ldnightav ! Logical for averaging night-time data
REAL(KIND=wp), INTENT(IN) :: &
& plamscl, & ! Diameter in metres of obs footprint in E/W, N/S directions
& pphiscl ! This is the full width (rather than half-width)
LOGICAL, INTENT(IN) :: &
& lindegrees ! T=> plamscl and pphiscl are specified in degrees, F=> in metres
!! * Local declarations
INTEGER :: ji
INTEGER :: jj
INTEGER :: jobs
INTEGER :: inrc
INTEGER :: isurf
INTEGER :: iobs
INTEGER :: imaxifp, imaxjfp
INTEGER :: imodi, imodj
INTEGER :: idayend
INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: &
& igrdi, &
& igrdj, &
& igrdip1, &
& igrdjp1
INTEGER, DIMENSION(:,:), SAVE, ALLOCATABLE :: &
& icount_night, &
& imask_night
REAL(wp) :: zlam
REAL(wp) :: zphi
REAL(wp), DIMENSION(1) :: zext, zobsmask
REAL(wp) :: zdaystp
REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: &
& zweig, &
& zmask, &
& zsurf, &
& zsurfm, &
& zsurftmp, &
& zglam, &
& zgphi, &
& zglamf, &
& zgphif
REAL(wp), DIMENSION(:,:), SAVE, ALLOCATABLE :: &
& zintmp, &
& zouttmp, &
& zmeanday ! to compute model sst in region of 24h daylight (pole)
!------------------------------------------------------------------------
! Local initialization
!------------------------------------------------------------------------
! Record and data counters
inrc = kt - kit000 + 2
isurf = surfdataqc%nsstp(inrc)
! Work out the maximum footprint size for the
! interpolation/averaging in model grid-points - has to be even.
CALL obs_max_fpsize( k2dint, plamscl, pphiscl, lindegrees, psurfmask, imaxifp, imaxjfp )
IF ( ldnightav ) THEN
! Initialize array for night mean
IF ( kt == 0 ) THEN
ALLOCATE ( icount_night(kpi,kpj) )
ALLOCATE ( imask_night(kpi,kpj) )
ALLOCATE ( zintmp(kpi,kpj) )
ALLOCATE ( zouttmp(kpi,kpj) )
ALLOCATE ( zmeanday(kpi,kpj) )
nday_qsr = -1 ! initialisation flag for nbc_dcy
ENDIF
! Night-time means are calculated for night-time values over timesteps:
! [1 <= kt <= kdaystp], [kdaystp+1 <= kt <= 2*kdaystp], .....
idayend = MOD( kt - kit000 + 1, kdaystp )
! Initialize night-time mean for first timestep of the day
IF ( idayend == 1 .OR. kt == 0 ) THEN
DO_2D( 1, 1, 1, 1 )
surfdataqc%vdmean(ji,jj) = 0.0
zmeanday(ji,jj) = 0.0
icount_night(ji,jj) = 0
END_2D
ENDIF
zintmp(:,:) = 0.0
zouttmp(:,:) = sbc_dcy( zintmp(:,:), .TRUE. )
imask_night(:,:) = INT( zouttmp(:,:) )
DO_2D( 1, 1, 1, 1 )
! Increment the temperature field for computing night mean and counter
surfdataqc%vdmean(ji,jj) = surfdataqc%vdmean(ji,jj) &
& + psurf(ji,jj) * REAL( imask_night(ji,jj) )
zmeanday(ji,jj) = zmeanday(ji,jj) + psurf(ji,jj)
icount_night(ji,jj) = icount_night(ji,jj) + imask_night(ji,jj)
END_2D
! Compute the night-time mean at the end of the day
zdaystp = 1.0 / REAL( kdaystp )
IF ( idayend == 0 ) THEN
IF (lwp) WRITE(numout,*) 'Calculating surfdataqc%vdmean on time-step: ',kt
DO_2D( 1, 1, 1, 1 )
! Test if "no night" point
IF ( icount_night(ji,jj) > 0 ) THEN
surfdataqc%vdmean(ji,jj) = surfdataqc%vdmean(ji,jj) &
& / REAL( icount_night(ji,jj) )
ELSE
!At locations where there is no night (e.g. poles),
! calculate daily mean instead of night-time mean.
surfdataqc%vdmean(ji,jj) = zmeanday(ji,jj) * zdaystp
ENDIF
END_2D
ENDIF
ENDIF
! Get the data for interpolation
ALLOCATE( &
& zweig(imaxifp,imaxjfp,1), &
& igrdi(imaxifp,imaxjfp,isurf), &
& igrdj(imaxifp,imaxjfp,isurf), &
& zglam(imaxifp,imaxjfp,isurf), &
& zgphi(imaxifp,imaxjfp,isurf), &
& zmask(imaxifp,imaxjfp,isurf), &
& zsurf(imaxifp,imaxjfp,isurf), &
& zsurftmp(imaxifp,imaxjfp,isurf), &
& zglamf(imaxifp+1,imaxjfp+1,isurf), &
& zgphif(imaxifp+1,imaxjfp+1,isurf), &
& igrdip1(imaxifp+1,imaxjfp+1,isurf), &
& igrdjp1(imaxifp+1,imaxjfp+1,isurf) &
& )
DO jobs = surfdataqc%nsurfup + 1, surfdataqc%nsurfup + isurf
iobs = jobs - surfdataqc%nsurfup
DO ji = 0, imaxifp
imodi = surfdataqc%mi(jobs) - int(imaxifp/2) + ji - 1
!
!Deal with wrap around in longitude
IF ( imodi < 1 ) imodi = imodi + jpiglo
IF ( imodi > jpiglo ) imodi = imodi - jpiglo
!
DO jj = 0, imaxjfp
imodj = surfdataqc%mj(jobs) - int(imaxjfp/2) + jj - 1
!If model values are out of the domain to the north/south then
!set them to be the edge of the domain
IF ( imodj < 1 ) imodj = 1
IF ( imodj > jpjglo ) imodj = jpjglo
!
igrdip1(ji+1,jj+1,iobs) = imodi
igrdjp1(ji+1,jj+1,iobs) = imodj
!
IF ( ji >= 1 .AND. jj >= 1 ) THEN
igrdi(ji,jj,iobs) = imodi
igrdj(ji,jj,iobs) = imodj
ENDIF
!
END DO
END DO
END DO
CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, &
& igrdi, igrdj, glamt, zglam )
CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, &
& igrdi, igrdj, gphit, zgphi )
CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, &
& igrdi, igrdj, psurfmask, zmask )
CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, &
& igrdi, igrdj, psurf, zsurf )
CALL obs_int_comm_2d( imaxifp+1, imaxjfp+1, isurf, kpi, kpj, &
& igrdip1, igrdjp1, glamf, zglamf )
CALL obs_int_comm_2d( imaxifp+1, imaxjfp+1, isurf, kpi, kpj, &
& igrdip1, igrdjp1, gphif, zgphif )
! At the end of the day get interpolated means
IF ( ldnightav ) THEN
IF ( idayend == 0 ) THEN
ALLOCATE( &
& zsurfm(imaxifp,imaxjfp,isurf) &
& )
CALL obs_int_comm_2d( imaxifp,imaxjfp, isurf, kpi, kpj, igrdi, igrdj, &
& surfdataqc%vdmean(:,:), zsurfm )
ENDIF
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ENDIF
! Loop over observations
DO jobs = surfdataqc%nsurfup + 1, surfdataqc%nsurfup + isurf
iobs = jobs - surfdataqc%nsurfup
IF ( kt /= surfdataqc%mstp(jobs) ) THEN
IF(lwp) THEN
WRITE(numout,*)
WRITE(numout,*) ' E R R O R : Observation', &
& ' time step is not consistent with the', &
& ' model time step'
WRITE(numout,*) ' ========='
WRITE(numout,*)
WRITE(numout,*) ' Record = ', jobs, &
& ' kt = ', kt, &
& ' mstp = ', surfdataqc%mstp(jobs), &
& ' ntyp = ', surfdataqc%ntyp(jobs)
ENDIF
CALL ctl_stop( 'obs_surf_opt', 'Inconsistent time' )
ENDIF
zlam = surfdataqc%rlam(jobs)
zphi = surfdataqc%rphi(jobs)
IF ( ldnightav .AND. idayend == 0 ) THEN
! Night-time averaged data
zsurftmp(:,:,iobs) = zsurfm(:,:,iobs)
ELSE
zsurftmp(:,:,iobs) = zsurf(:,:,iobs)
ENDIF
IF ( k2dint <= 4 ) THEN
! Get weights to interpolate the model value to the observation point
CALL obs_int_h2d_init( 1, 1, k2dint, zlam, zphi, &
& zglam(:,:,iobs), zgphi(:,:,iobs), &
& zmask(:,:,iobs), zweig, zobsmask )
! Interpolate the model value to the observation point
CALL obs_int_h2d( 1, 1, zweig, zsurftmp(:,:,iobs), zext )
ELSE
! Get weights to average the model SLA to the observation footprint
CALL obs_avg_h2d_init( 1, 1, imaxifp, imaxjfp, k2dint, zlam, zphi, &
& zglam(:,:,iobs), zgphi(:,:,iobs), &
& zglamf(:,:,iobs), zgphif(:,:,iobs), &
& zmask(:,:,iobs), plamscl, pphiscl, &
& lindegrees, zweig )
! Average the model SST to the observation footprint
CALL obs_avg_h2d( 1, 1, imaxifp, imaxjfp, &
& zweig, zsurftmp(:,:,iobs), zext )
ENDIF
IF ( TRIM(surfdataqc%cvars(1)) == 'SLA' .AND. surfdataqc%nextra == 2 ) THEN
! ... Remove the MDT from the SSH at the observation point to get the SLA
surfdataqc%rext(jobs,1) = zext(1)
surfdataqc%rmod(jobs,1) = surfdataqc%rext(jobs,1) - surfdataqc%rext(jobs,2)
ELSE
surfdataqc%rmod(jobs,1) = zext(1)
ENDIF
IF ( zext(1) == obfillflt ) THEN
! If the observation value is a fill value, set QC flag to bad
surfdataqc%nqc(jobs) = 4
ENDIF
END DO
! Deallocate the data for interpolation
DEALLOCATE( &
& zweig, &
& igrdi, &
& igrdj, &
& zglam, &
& zgphi, &
& zmask, &
& zsurf, &
& zsurftmp, &
& zglamf, &
& zgphif, &
& igrdip1,&
& igrdjp1 &
& )
! At the end of the day also deallocate night-time mean array
IF ( ldnightav ) THEN
IF ( idayend == 0 ) THEN
DEALLOCATE( &
& zsurfm &
& )
ENDIF
ENDIF
!
surfdataqc%nsurfup = surfdataqc%nsurfup + isurf
!
END SUBROUTINE obs_surf_opt
!!======================================================================
END MODULE obs_oper