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MODULE obs_rot_vel
!!======================================================================
!! *** MODULE obs_rot_vel ***
!! Observation diagnostics: Read the velocity profile observations
!!======================================================================
!!----------------------------------------------------------------------
!! obs_rotvel : Rotate velocity data into N-S,E-W directorions
!!----------------------------------------------------------------------
!! * Modules used
USE par_kind ! Precision variables
USE par_oce ! Ocean parameters
USE in_out_manager ! I/O manager
USE dom_oce ! Ocean space and time domain variables
USE obs_grid ! Grid search
USE obs_utils ! For error handling
USE obs_profiles_def ! Profile definitions
USE obs_inter_h2d ! Horizontal interpolation
USE obs_inter_sup ! MPP support routines for interpolation
USE geo2ocean ! Rotation of vectors
USE obs_fbm ! Feedback definitions
IMPLICIT NONE
!! * Routine accessibility
PRIVATE
PUBLIC obs_rotvel ! Rotate the observations
!!----------------------------------------------------------------------
!! NEMO/OCE 4.0 , NEMO Consortium (2018)
!! $Id: obs_rot_vel.F90 10068 2018-08-28 14:09:04Z nicolasmartin $
!! Software governed by the CeCILL license (see ./LICENSE)
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE obs_rotvel( profdata, k2dint, pu, pv )
!!---------------------------------------------------------------------
!!
!! *** ROUTINE obs_rea_pro_dri ***
!!
!! ** Purpose : Rotate velocity data into N-S,E-W directorions
!!
!! ** Method : Interpolation of geo2ocean coefficients on U,V grid
!! to observation point followed by a similar computations
!! as in geo2ocean.
!!
!! ** Action : Review if there is a better way to do this.
!!
!! References :
!!
!! History :
!! ! : 2009-02 (K. Mogensen) : New routine
!!----------------------------------------------------------------------
!! * Modules used
!! * Arguments
TYPE(obs_prof), INTENT(INOUT) :: profdata ! Profile data to be read
INTEGER, INTENT(IN) :: k2dint ! Horizontal interpolation methed
REAL(wp), DIMENSION(*) :: &
& pu, &
& pv
!! * Local declarations
REAL(wp), DIMENSION(2,2,1) :: zweig
REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: &
& zmasku, &
& zmaskv, &
& zcoslu, &
& zsinlu, &
& zcoslv, &
& zsinlv, &
& zglamu, &
& zgphiu, &
& zglamv, &
& zgphiv
REAL(wp), DIMENSION(1) :: &
& zsinu, &
& zcosu, &
& zsinv, &
& zcosv
REAL(wp) :: zsin
REAL(wp) :: zcos
REAL(wp), DIMENSION(1) :: zobsmask
REAL(wp), DIMENSION(jpi,jpj) :: zsingu,zcosgu,zsingv,zcosgv
INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: &
& igrdiu, &
& igrdju, &
& igrdiv, &
& igrdjv
INTEGER :: ji
INTEGER :: jk
!-----------------------------------------------------------------------
! Allocate data for message parsing and interpolation
!-----------------------------------------------------------------------
ALLOCATE( &
& igrdiu(2,2,profdata%nprof), &
& igrdju(2,2,profdata%nprof), &
& zglamu(2,2,profdata%nprof), &
& zgphiu(2,2,profdata%nprof), &
& zmasku(2,2,profdata%nprof), &
& zcoslu(2,2,profdata%nprof), &
& zsinlu(2,2,profdata%nprof), &
& igrdiv(2,2,profdata%nprof), &
& igrdjv(2,2,profdata%nprof), &
& zglamv(2,2,profdata%nprof), &
& zgphiv(2,2,profdata%nprof), &
& zmaskv(2,2,profdata%nprof), &
& zcoslv(2,2,profdata%nprof), &
& zsinlv(2,2,profdata%nprof) &
& )
!-----------------------------------------------------------------------
! Receive the angles on the U and V grids.
!-----------------------------------------------------------------------
CALL obs_rot( zsingu, zcosgu, zsingv, zcosgv )
DO ji = 1, profdata%nprof
igrdiu(1,1,ji) = profdata%mi(ji,1)-1
igrdju(1,1,ji) = profdata%mj(ji,1)-1
igrdiu(1,2,ji) = profdata%mi(ji,1)-1
igrdju(1,2,ji) = profdata%mj(ji,1)
igrdiu(2,1,ji) = profdata%mi(ji,1)
igrdju(2,1,ji) = profdata%mj(ji,1)-1
igrdiu(2,2,ji) = profdata%mi(ji,1)
igrdju(2,2,ji) = profdata%mj(ji,1)
igrdiv(1,1,ji) = profdata%mi(ji,2)-1
igrdjv(1,1,ji) = profdata%mj(ji,2)-1
igrdiv(1,2,ji) = profdata%mi(ji,2)-1
igrdjv(1,2,ji) = profdata%mj(ji,2)
igrdiv(2,1,ji) = profdata%mi(ji,2)
igrdjv(2,1,ji) = profdata%mj(ji,2)-1
igrdiv(2,2,ji) = profdata%mi(ji,2)
igrdjv(2,2,ji) = profdata%mj(ji,2)
END DO
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiu, igrdju, &
& glamu, zglamu )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiu, igrdju, &
& gphiu, zgphiu )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiu, igrdju, &
& umask(:,:,1), zmasku )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiu, igrdju, &
& zsingu, zsinlu )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiu, igrdju, &
& zcosgu, zcoslu )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiv, igrdjv, &
& glamv, zglamv )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiv, igrdjv, &
& gphiv, zgphiv )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiv, igrdjv, &
& vmask(:,:,1), zmaskv )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiv, igrdjv, &
& zsingv, zsinlv )
CALL obs_int_comm_2d( 2, 2, profdata%nprof, jpi, jpj, igrdiv, igrdjv, &
& zcosgv, zcoslv )
DO ji = 1, profdata%nprof
CALL obs_int_h2d_init( 1, 1, k2dint, &
& profdata%rlam(ji), profdata%rphi(ji), &
& zglamu(:,:,ji), zgphiu(:,:,ji), &
& zmasku(:,:,ji), zweig, zobsmask )
CALL obs_int_h2d( 1, 1, zweig, zsinlu(:,:,ji), zsinu )
CALL obs_int_h2d( 1, 1, zweig, zcoslu(:,:,ji), zcosu )
CALL obs_int_h2d_init( 1, 1, k2dint, &
& profdata%rlam(ji), profdata%rphi(ji), &
& zglamv(:,:,ji), zgphiv(:,:,ji), &
& zmaskv(:,:,ji), zweig, zobsmask )
CALL obs_int_h2d( 1, 1, zweig, zsinlv(:,:,ji), zsinv )
CALL obs_int_h2d( 1, 1, zweig, zcoslv(:,:,ji), zcosv )
! Assume that the angle at observation point is the
! mean of u and v cosines/sines
zcos = 0.5_wp * ( zcosu(1) + zcosv(1) )
zsin = 0.5_wp * ( zsinu(1) + zsinv(1) )
IF ( ( profdata%npvsta(ji,1) /= profdata%npvsta(ji,2) ) .OR. &
& ( profdata%npvend(ji,1) /= profdata%npvend(ji,2) ) ) THEN
CALL fatal_error( 'Different number of U and V observations '// &
'in a profile in obs_rotvel', __LINE__ )
ENDIF
DO jk = profdata%npvsta(ji,1), profdata%npvend(ji,1)
IF ( ( profdata%var(1)%vmod(jk) /= fbrmdi ) .AND. &
& ( profdata%var(2)%vmod(jk) /= fbrmdi ) ) THEN
pu(jk) = profdata%var(1)%vmod(jk) * zcos - &
& profdata%var(2)%vmod(jk) * zsin
pv(jk) = profdata%var(2)%vmod(jk) * zcos + &
& profdata%var(1)%vmod(jk) * zsin
ELSE
pu(jk) = fbrmdi
pv(jk) = fbrmdi
ENDIF
END DO
END DO
DEALLOCATE( &
& igrdiu, &
& igrdju, &
& zglamu, &
& zgphiu, &
& zmasku, &
& zcoslu, &
& zsinlu, &
& igrdiv, &
& igrdjv, &
& zglamv, &
& zgphiv, &
& zmaskv, &
& zcoslv, &
& zsinlv &
& )
END SUBROUTINE obs_rotvel
END MODULE obs_rot_vel