| 1 | MODULE obs_oper |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE obs_oper *** |
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| 4 | !! Observation diagnostics: Observation operators for various observation |
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| 5 | !! types |
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| 6 | !!====================================================================== |
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| 7 | |
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| 8 | !!---------------------------------------------------------------------- |
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| 9 | !! obs_prof_opt : Compute the model counterpart of profile data |
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| 10 | !! obs_surf_opt : Compute the model counterpart of surface data |
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| 11 | !!---------------------------------------------------------------------- |
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| 12 | USE obs_inter_sup ! Interpolation support |
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| 13 | USE obs_inter_h2d, ONLY : obs_int_h2d, obs_int_h2d_init ! Horizontal interpolation to the obs pt |
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| 14 | USE obs_averg_h2d, ONLY : obs_avg_h2d, obs_avg_h2d_init, obs_max_fpsize ! Horizontal averaging to the obs footprint |
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| 15 | USE obs_inter_z1d, ONLY : obs_int_z1d, obs_int_z1d_spl ! Vertical interpolation to the obs pt |
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| 16 | USE obs_const , ONLY : obfillflt ! Obs fill value |
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| 17 | USE dom_oce, ONLY : glamt, glamf, gphit, gphif ! lat/lon of ocean grid-points |
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| 18 | USE lib_mpp, ONLY : ctl_warn, ctl_stop ! Warning and stopping routines |
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| 19 | USE sbcdcy, ONLY : sbc_dcy, nday_qsr ! For calculation of where it is night-time |
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| 20 | USE obs_grid, ONLY : obs_level_search |
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| 21 | ! |
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| 22 | USE par_kind , ONLY : wp ! Precision variables |
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| 23 | USE in_out_manager ! I/O manager |
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| 24 | |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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| 28 | PUBLIC obs_prof_opt !: Compute the model counterpart of profile obs |
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| 29 | PUBLIC obs_surf_opt !: Compute the model counterpart of surface obs |
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| 30 | |
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| 31 | INTEGER, PARAMETER, PUBLIC :: imaxavtypes = 20 !: Max number of daily avgd obs types |
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| 32 | |
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| 33 | !! * Substitutions |
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| 34 | # include "do_loop_substitute.h90" |
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| 35 | !!---------------------------------------------------------------------- |
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| 36 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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| 37 | !! $Id$ |
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| 38 | !! Software governed by the CeCILL license (see ./LICENSE) |
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| 39 | !!---------------------------------------------------------------------- |
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| 40 | CONTAINS |
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| 41 | |
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| 42 | SUBROUTINE obs_prof_opt( prodatqc, kt, kpi, kpj, kpk, & |
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| 43 | & kit000, kdaystp, kvar, & |
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| 44 | & pvar, pgdept, pgdepw, & |
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| 45 | & pmask, & |
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| 46 | & plam, pphi, & |
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| 47 | & k1dint, k2dint, kdailyavtypes ) |
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| 48 | !!----------------------------------------------------------------------- |
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| 49 | !! *** ROUTINE obs_pro_opt *** |
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| 50 | !! |
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| 51 | !! ** Purpose : Compute the model counterpart of profiles |
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| 52 | !! data by interpolating from the model grid to the |
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| 53 | !! observation point. |
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| 54 | !! |
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| 55 | !! ** Method : Linearly interpolate to each observation point using |
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| 56 | !! the model values at the corners of the surrounding grid box. |
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| 57 | !! |
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| 58 | !! First, a vertical profile of horizontally interpolated model |
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| 59 | !! now values is computed at the obs (lon, lat) point. |
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| 60 | !! Several horizontal interpolation schemes are available: |
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| 61 | !! - distance-weighted (great circle) (k2dint = 0) |
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| 62 | !! - distance-weighted (small angle) (k2dint = 1) |
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| 63 | !! - bilinear (geographical grid) (k2dint = 2) |
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| 64 | !! - bilinear (quadrilateral grid) (k2dint = 3) |
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| 65 | !! - polynomial (quadrilateral grid) (k2dint = 4) |
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| 66 | !! |
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| 67 | !! Next, the vertical profile is interpolated to the |
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| 68 | !! data depth points. Two vertical interpolation schemes are |
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| 69 | !! available: |
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| 70 | !! - linear (k1dint = 0) |
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| 71 | !! - Cubic spline (k1dint = 1) |
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| 72 | !! |
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| 73 | !! For the cubic spline the 2nd derivative of the interpolating |
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| 74 | !! polynomial is computed before entering the vertical interpolation |
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| 75 | !! routine. |
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| 76 | !! |
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| 77 | !! If the logical is switched on, the model equivalent is |
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| 78 | !! a daily mean model temperature field. So, we first compute |
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| 79 | !! the mean, then interpolate only at the end of the day. |
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| 80 | !! |
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| 81 | !! Note: in situ temperature observations must be converted |
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| 82 | !! to potential temperature (the model variable) prior to |
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| 83 | !! assimilation. |
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| 84 | !! |
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| 85 | !! ** Action : |
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| 86 | !! |
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| 87 | !! History : |
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| 88 | !! ! 97-11 (A. Weaver, S. Ricci, N. Daget) |
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| 89 | !! ! 06-03 (G. Smith) NEMOVAR migration |
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| 90 | !! ! 06-10 (A. Weaver) Cleanup |
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| 91 | !! ! 07-01 (K. Mogensen) Merge of temperature and salinity |
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| 92 | !! ! 07-03 (K. Mogensen) General handling of profiles |
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| 93 | !! ! 15-02 (M. Martin) Combined routine for all profile types |
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| 94 | !! ! 17-02 (M. Martin) Include generalised vertical coordinate changes |
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| 95 | !!----------------------------------------------------------------------- |
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| 96 | USE obs_profiles_def ! Definition of storage space for profile obs. |
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| 97 | |
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| 98 | IMPLICIT NONE |
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| 99 | |
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| 100 | TYPE(obs_prof), INTENT(inout) :: prodatqc ! Subset of profile data passing QC |
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| 101 | INTEGER , INTENT(in ) :: kt ! Time step |
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| 102 | INTEGER , INTENT(in ) :: kpi, kpj, kpk ! Model grid parameters |
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| 103 | INTEGER , INTENT(in ) :: kit000 ! Number of the first time step (kit000-1 = restart time) |
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| 104 | INTEGER , INTENT(in ) :: k1dint ! Vertical interpolation type (see header) |
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| 105 | INTEGER , INTENT(in ) :: k2dint ! Horizontal interpolation type (see header) |
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| 106 | INTEGER , INTENT(in ) :: kdaystp ! Number of time steps per day |
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| 107 | INTEGER , INTENT(in ) :: kvar ! Number of variables in prodatqc |
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| 108 | REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj,kpk) :: pvar ! Model field |
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| 109 | REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj,kpk) :: pmask ! Land-sea mask |
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| 110 | REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj) :: plam ! Model longitude |
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| 111 | REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj) :: pphi ! Model latitudes |
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| 112 | REAL(KIND=wp) , INTENT(in ), DIMENSION(kpi,kpj,kpk) :: pgdept, pgdepw ! depth of T and W levels |
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| 113 | INTEGER, DIMENSION(imaxavtypes), OPTIONAL :: kdailyavtypes ! Types for daily averages |
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| 114 | |
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| 115 | !! * Local declarations |
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| 116 | INTEGER :: ji |
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| 117 | INTEGER :: jj |
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| 118 | INTEGER :: jk |
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| 119 | INTEGER :: jobs |
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| 120 | INTEGER :: inrc |
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| 121 | INTEGER :: ipro |
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| 122 | INTEGER :: idayend |
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| 123 | INTEGER :: ista |
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| 124 | INTEGER :: iend |
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| 125 | INTEGER :: iobs |
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| 126 | INTEGER :: iin, ijn, ikn, ik ! looping indices over interpolation nodes |
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| 127 | INTEGER :: inum_obs |
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| 128 | INTEGER, DIMENSION(imaxavtypes) :: & |
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| 129 | & idailyavtypes |
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| 130 | INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: & |
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| 131 | & igrdi, & |
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| 132 | & igrdj |
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| 133 | INTEGER, ALLOCATABLE, DIMENSION(:) :: iv_indic |
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| 134 | |
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| 135 | REAL(KIND=wp) :: zlam |
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| 136 | REAL(KIND=wp) :: zphi |
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| 137 | REAL(KIND=wp) :: zdaystp |
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| 138 | REAL(KIND=wp), DIMENSION(kpk) :: & |
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| 139 | & zobsk, & |
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| 140 | & zobs2k |
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| 141 | REAL(KIND=wp), DIMENSION(2,2,1) :: & |
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| 142 | & zweig1, & |
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| 143 | & zweig |
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| 144 | REAL(wp), DIMENSION(:,:,:,:), ALLOCATABLE :: & |
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| 145 | & zmask, & |
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| 146 | & zint, & |
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| 147 | & zinm, & |
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| 148 | & zgdept, & |
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| 149 | & zgdepw |
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| 150 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: & |
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| 151 | & zglam, & |
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| 152 | & zgphi |
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| 153 | REAL(KIND=wp), DIMENSION(1) :: zmsk |
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| 154 | REAL(KIND=wp), DIMENSION(:,:,:), ALLOCATABLE :: interp_corner |
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| 155 | |
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| 156 | LOGICAL :: ld_dailyav |
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| 157 | |
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| 158 | !------------------------------------------------------------------------ |
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| 159 | ! Local initialization |
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| 160 | !------------------------------------------------------------------------ |
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| 161 | ! Record and data counters |
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| 162 | inrc = kt - kit000 + 2 |
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| 163 | ipro = prodatqc%npstp(inrc) |
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| 164 | |
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| 165 | ! Daily average types |
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| 166 | ld_dailyav = .FALSE. |
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| 167 | IF ( PRESENT(kdailyavtypes) ) THEN |
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| 168 | idailyavtypes(:) = kdailyavtypes(:) |
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| 169 | IF ( ANY (idailyavtypes(:) /= -1) ) ld_dailyav = .TRUE. |
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| 170 | ELSE |
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| 171 | idailyavtypes(:) = -1 |
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| 172 | ENDIF |
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| 173 | |
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| 174 | ! Daily means are calculated for values over timesteps: |
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| 175 | ! [1 <= kt <= kdaystp], [kdaystp+1 <= kt <= 2*kdaystp], ... |
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| 176 | idayend = MOD( kt - kit000 + 1, kdaystp ) |
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| 177 | |
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| 178 | IF ( ld_dailyav ) THEN |
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| 179 | |
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| 180 | ! Initialize daily mean for first timestep of the day |
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| 181 | IF ( idayend == 1 .OR. kt == 0 ) THEN |
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| 182 | DO_3D( 1, 1, 1, 1, 1, jpk ) |
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| 183 | prodatqc%vdmean(ji,jj,jk,kvar) = 0.0 |
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| 184 | END_3D |
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| 185 | ENDIF |
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| 186 | |
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| 187 | DO_3D( 1, 1, 1, 1, 1, jpk ) |
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| 188 | ! Increment field 1 for computing daily mean |
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| 189 | prodatqc%vdmean(ji,jj,jk,kvar) = prodatqc%vdmean(ji,jj,jk,kvar) & |
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| 190 | & + pvar(ji,jj,jk) |
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| 191 | END_3D |
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| 192 | |
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| 193 | ! Compute the daily mean at the end of day |
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| 194 | zdaystp = 1.0 / REAL( kdaystp ) |
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| 195 | IF ( idayend == 0 ) THEN |
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| 196 | IF (lwp) WRITE(numout,*) 'Calculating prodatqc%vdmean on time-step: ',kt |
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| 197 | CALL FLUSH(numout) |
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| 198 | DO_3D( 1, 1, 1, 1, 1, jpk ) |
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| 199 | prodatqc%vdmean(ji,jj,jk,kvar) = prodatqc%vdmean(ji,jj,jk,kvar) & |
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| 200 | & * zdaystp |
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| 201 | END_3D |
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| 202 | ENDIF |
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| 203 | |
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| 204 | ENDIF |
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| 205 | |
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| 206 | ! Get the data for interpolation |
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| 207 | ALLOCATE( & |
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| 208 | & igrdi(2,2,ipro), & |
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| 209 | & igrdj(2,2,ipro), & |
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| 210 | & zglam(2,2,ipro), & |
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| 211 | & zgphi(2,2,ipro), & |
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| 212 | & zmask(2,2,kpk,ipro), & |
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| 213 | & zint(2,2,kpk,ipro), & |
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| 214 | & zgdept(2,2,kpk,ipro), & |
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| 215 | & zgdepw(2,2,kpk,ipro) & |
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| 216 | & ) |
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| 217 | |
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| 218 | DO jobs = prodatqc%nprofup + 1, prodatqc%nprofup + ipro |
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| 219 | iobs = jobs - prodatqc%nprofup |
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| 220 | igrdi(1,1,iobs) = prodatqc%mi(jobs,kvar)-1 |
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| 221 | igrdj(1,1,iobs) = prodatqc%mj(jobs,kvar)-1 |
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| 222 | igrdi(1,2,iobs) = prodatqc%mi(jobs,kvar)-1 |
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| 223 | igrdj(1,2,iobs) = prodatqc%mj(jobs,kvar) |
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| 224 | igrdi(2,1,iobs) = prodatqc%mi(jobs,kvar) |
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| 225 | igrdj(2,1,iobs) = prodatqc%mj(jobs,kvar)-1 |
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| 226 | igrdi(2,2,iobs) = prodatqc%mi(jobs,kvar) |
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| 227 | igrdj(2,2,iobs) = prodatqc%mj(jobs,kvar) |
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| 228 | END DO |
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| 229 | |
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| 230 | ! Initialise depth arrays |
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| 231 | zgdept(:,:,:,:) = 0.0 |
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| 232 | zgdepw(:,:,:,:) = 0.0 |
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| 233 | |
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| 234 | CALL obs_int_comm_2d( 2, 2, ipro, kpi, kpj, igrdi, igrdj, plam, zglam ) |
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| 235 | CALL obs_int_comm_2d( 2, 2, ipro, kpi, kpj, igrdi, igrdj, pphi, zgphi ) |
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| 236 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pmask, zmask ) |
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| 237 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pvar, zint ) |
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| 238 | |
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| 239 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pgdept, zgdept ) |
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| 240 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, pgdepw, zgdepw ) |
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| 241 | |
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| 242 | ! At the end of the day also get interpolated means |
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| 243 | IF ( ld_dailyav .AND. idayend == 0 ) THEN |
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| 244 | |
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| 245 | ALLOCATE( zinm(2,2,kpk,ipro) ) |
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| 246 | |
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| 247 | CALL obs_int_comm_3d( 2, 2, ipro, kpi, kpj, kpk, igrdi, igrdj, & |
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| 248 | & prodatqc%vdmean(:,:,:,kvar), zinm ) |
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| 249 | |
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| 250 | ENDIF |
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| 251 | |
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| 252 | ! Return if no observations to process |
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| 253 | ! Has to be done after comm commands to ensure processors |
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| 254 | ! stay in sync |
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| 255 | IF ( ipro == 0 ) RETURN |
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| 256 | |
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| 257 | DO jobs = prodatqc%nprofup + 1, prodatqc%nprofup + ipro |
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| 258 | |
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| 259 | iobs = jobs - prodatqc%nprofup |
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| 260 | |
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| 261 | IF ( kt /= prodatqc%mstp(jobs) ) THEN |
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| 262 | |
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| 263 | IF(lwp) THEN |
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| 264 | WRITE(numout,*) |
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| 265 | WRITE(numout,*) ' E R R O R : Observation', & |
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| 266 | & ' time step is not consistent with the', & |
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| 267 | & ' model time step' |
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| 268 | WRITE(numout,*) ' =========' |
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| 269 | WRITE(numout,*) |
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| 270 | WRITE(numout,*) ' Record = ', jobs, & |
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| 271 | & ' kt = ', kt, & |
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| 272 | & ' mstp = ', prodatqc%mstp(jobs), & |
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| 273 | & ' ntyp = ', prodatqc%ntyp(jobs) |
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| 274 | ENDIF |
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| 275 | CALL ctl_stop( 'obs_pro_opt', 'Inconsistent time' ) |
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| 276 | ENDIF |
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| 277 | |
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| 278 | zlam = prodatqc%rlam(jobs) |
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| 279 | zphi = prodatqc%rphi(jobs) |
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| 280 | |
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| 281 | ! Horizontal weights |
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| 282 | ! Masked values are calculated later. |
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| 283 | IF ( prodatqc%npvend(jobs,kvar) > 0 ) THEN |
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| 284 | |
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| 285 | CALL obs_int_h2d_init( 1, 1, k2dint, zlam, zphi, & |
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| 286 | & zglam(:,:,iobs), zgphi(:,:,iobs), & |
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| 287 | & zmask(:,:,1,iobs), zweig1, zmsk ) |
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| 288 | |
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| 289 | ENDIF |
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| 290 | |
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| 291 | IF ( prodatqc%npvend(jobs,kvar) > 0 ) THEN |
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| 292 | |
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| 293 | zobsk(:) = obfillflt |
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| 294 | |
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| 295 | IF ( ANY (idailyavtypes(:) == prodatqc%ntyp(jobs)) ) THEN |
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| 296 | |
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| 297 | IF ( idayend == 0 ) THEN |
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| 298 | ! Daily averaged data |
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| 299 | |
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| 300 | ! vertically interpolate all 4 corners |
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| 301 | ista = prodatqc%npvsta(jobs,kvar) |
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| 302 | iend = prodatqc%npvend(jobs,kvar) |
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| 303 | inum_obs = iend - ista + 1 |
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| 304 | ALLOCATE(interp_corner(2,2,inum_obs),iv_indic(inum_obs)) |
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| 305 | |
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| 306 | DO iin=1,2 |
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| 307 | DO ijn=1,2 |
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| 308 | |
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| 309 | IF ( k1dint == 1 ) THEN |
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| 310 | CALL obs_int_z1d_spl( kpk, & |
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| 311 | & zinm(iin,ijn,:,iobs), & |
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| 312 | & zobs2k, zgdept(iin,ijn,:,iobs), & |
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| 313 | & zmask(iin,ijn,:,iobs)) |
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| 314 | ENDIF |
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| 315 | |
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| 316 | CALL obs_level_search(kpk, & |
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| 317 | & zgdept(iin,ijn,:,iobs), & |
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| 318 | & inum_obs, prodatqc%var(kvar)%vdep(ista:iend), & |
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| 319 | & iv_indic) |
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| 320 | |
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| 321 | CALL obs_int_z1d(kpk, iv_indic, k1dint, inum_obs, & |
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| 322 | & prodatqc%var(kvar)%vdep(ista:iend), & |
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| 323 | & zinm(iin,ijn,:,iobs), & |
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| 324 | & zobs2k, interp_corner(iin,ijn,:), & |
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| 325 | & zgdept(iin,ijn,:,iobs), & |
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| 326 | & zmask(iin,ijn,:,iobs)) |
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| 327 | |
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| 328 | ENDDO |
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| 329 | ENDDO |
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| 330 | |
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| 331 | ENDIF !idayend |
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| 332 | |
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| 333 | ELSE |
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| 334 | |
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| 335 | ! Point data |
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| 336 | |
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| 337 | ! vertically interpolate all 4 corners |
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| 338 | ista = prodatqc%npvsta(jobs,kvar) |
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| 339 | iend = prodatqc%npvend(jobs,kvar) |
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| 340 | inum_obs = iend - ista + 1 |
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| 341 | ALLOCATE(interp_corner(2,2,inum_obs), iv_indic(inum_obs)) |
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| 342 | DO iin=1,2 |
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| 343 | DO ijn=1,2 |
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| 344 | |
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| 345 | IF ( k1dint == 1 ) THEN |
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| 346 | CALL obs_int_z1d_spl( kpk, & |
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| 347 | & zint(iin,ijn,:,iobs),& |
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| 348 | & zobs2k, zgdept(iin,ijn,:,iobs), & |
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| 349 | & zmask(iin,ijn,:,iobs)) |
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| 350 | |
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| 351 | ENDIF |
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| 352 | |
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| 353 | CALL obs_level_search(kpk, & |
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| 354 | & zgdept(iin,ijn,:,iobs),& |
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| 355 | & inum_obs, prodatqc%var(kvar)%vdep(ista:iend), & |
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| 356 | & iv_indic) |
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| 357 | |
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| 358 | CALL obs_int_z1d(kpk, iv_indic, k1dint, inum_obs, & |
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| 359 | & prodatqc%var(kvar)%vdep(ista:iend), & |
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| 360 | & zint(iin,ijn,:,iobs), & |
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| 361 | & zobs2k,interp_corner(iin,ijn,:), & |
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| 362 | & zgdept(iin,ijn,:,iobs), & |
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| 363 | & zmask(iin,ijn,:,iobs) ) |
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| 364 | |
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| 365 | ENDDO |
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| 366 | ENDDO |
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| 367 | |
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| 368 | ENDIF |
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| 369 | |
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| 370 | !------------------------------------------------------------- |
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| 371 | ! Compute the horizontal interpolation for every profile level |
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| 372 | !------------------------------------------------------------- |
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| 373 | |
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| 374 | DO ikn=1,inum_obs |
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| 375 | iend=ista+ikn-1 |
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| 376 | |
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| 377 | zweig(:,:,1) = 0._wp |
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| 378 | |
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| 379 | ! This code forces the horizontal weights to be |
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| 380 | ! zero IF the observation is below the bottom of the |
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| 381 | ! corners of the interpolation nodes, Or if it is in |
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| 382 | ! the mask. This is important for observations near |
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| 383 | ! steep bathymetry |
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| 384 | DO iin=1,2 |
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| 385 | DO ijn=1,2 |
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| 386 | |
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| 387 | depth_loop: DO ik=kpk,2,-1 |
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| 388 | IF(zmask(iin,ijn,ik-1,iobs ) > 0.9 )THEN |
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| 389 | |
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| 390 | zweig(iin,ijn,1) = & |
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| 391 | & zweig1(iin,ijn,1) * & |
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| 392 | & MAX( SIGN(1._wp,(zgdepw(iin,ijn,ik,iobs) ) & |
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| 393 | & - prodatqc%var(kvar)%vdep(iend)),0._wp) |
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| 394 | |
|---|
| 395 | EXIT depth_loop |
|---|
| 396 | |
|---|
| 397 | ENDIF |
|---|
| 398 | |
|---|
| 399 | ENDDO depth_loop |
|---|
| 400 | |
|---|
| 401 | ENDDO |
|---|
| 402 | ENDDO |
|---|
| 403 | |
|---|
| 404 | CALL obs_int_h2d( 1, 1, zweig, interp_corner(:,:,ikn), & |
|---|
| 405 | & prodatqc%var(kvar)%vmod(iend:iend) ) |
|---|
| 406 | |
|---|
| 407 | ! Set QC flag for any observations found below the bottom |
|---|
| 408 | ! needed as the check here is more strict than that in obs_prep |
|---|
| 409 | IF (sum(zweig) == 0.0_wp) prodatqc%var(kvar)%nvqc(iend:iend)=4 |
|---|
| 410 | |
|---|
| 411 | ENDDO |
|---|
| 412 | |
|---|
| 413 | DEALLOCATE(interp_corner,iv_indic) |
|---|
| 414 | |
|---|
| 415 | ENDIF |
|---|
| 416 | |
|---|
| 417 | ENDDO |
|---|
| 418 | |
|---|
| 419 | ! Deallocate the data for interpolation |
|---|
| 420 | DEALLOCATE( & |
|---|
| 421 | & igrdi, & |
|---|
| 422 | & igrdj, & |
|---|
| 423 | & zglam, & |
|---|
| 424 | & zgphi, & |
|---|
| 425 | & zmask, & |
|---|
| 426 | & zint, & |
|---|
| 427 | & zgdept, & |
|---|
| 428 | & zgdepw & |
|---|
| 429 | & ) |
|---|
| 430 | |
|---|
| 431 | ! At the end of the day also get interpolated means |
|---|
| 432 | IF ( ld_dailyav .AND. idayend == 0 ) THEN |
|---|
| 433 | DEALLOCATE( zinm ) |
|---|
| 434 | ENDIF |
|---|
| 435 | |
|---|
| 436 | IF ( kvar == prodatqc%nvar ) THEN |
|---|
| 437 | prodatqc%nprofup = prodatqc%nprofup + ipro |
|---|
| 438 | ENDIF |
|---|
| 439 | |
|---|
| 440 | END SUBROUTINE obs_prof_opt |
|---|
| 441 | |
|---|
| 442 | SUBROUTINE obs_surf_opt( surfdataqc, kt, kpi, kpj, & |
|---|
| 443 | & kit000, kdaystp, psurf, psurfmask, & |
|---|
| 444 | & k2dint, ldnightav, plamscl, pphiscl, & |
|---|
| 445 | & lindegrees ) |
|---|
| 446 | |
|---|
| 447 | !!----------------------------------------------------------------------- |
|---|
| 448 | !! |
|---|
| 449 | !! *** ROUTINE obs_surf_opt *** |
|---|
| 450 | !! |
|---|
| 451 | !! ** Purpose : Compute the model counterpart of surface |
|---|
| 452 | !! data by interpolating from the model grid to the |
|---|
| 453 | !! observation point. |
|---|
| 454 | !! |
|---|
| 455 | !! ** Method : Linearly interpolate to each observation point using |
|---|
| 456 | !! the model values at the corners of the surrounding grid box. |
|---|
| 457 | !! |
|---|
| 458 | !! The new model value is first computed at the obs (lon, lat) point. |
|---|
| 459 | !! |
|---|
| 460 | !! Several horizontal interpolation schemes are available: |
|---|
| 461 | !! - distance-weighted (great circle) (k2dint = 0) |
|---|
| 462 | !! - distance-weighted (small angle) (k2dint = 1) |
|---|
| 463 | !! - bilinear (geographical grid) (k2dint = 2) |
|---|
| 464 | !! - bilinear (quadrilateral grid) (k2dint = 3) |
|---|
| 465 | !! - polynomial (quadrilateral grid) (k2dint = 4) |
|---|
| 466 | !! |
|---|
| 467 | !! Two horizontal averaging schemes are also available: |
|---|
| 468 | !! - weighted radial footprint (k2dint = 5) |
|---|
| 469 | !! - weighted rectangular footprint (k2dint = 6) |
|---|
| 470 | !! |
|---|
| 471 | !! |
|---|
| 472 | !! ** Action : |
|---|
| 473 | !! |
|---|
| 474 | !! History : |
|---|
| 475 | !! ! 07-03 (A. Weaver) |
|---|
| 476 | !! ! 15-02 (M. Martin) Combined routine for surface types |
|---|
| 477 | !! ! 17-03 (M. Martin) Added horizontal averaging options |
|---|
| 478 | !!----------------------------------------------------------------------- |
|---|
| 479 | USE obs_surf_def ! Definition of storage space for surface observations |
|---|
| 480 | |
|---|
| 481 | IMPLICIT NONE |
|---|
| 482 | |
|---|
| 483 | TYPE(obs_surf), INTENT(INOUT) :: & |
|---|
| 484 | & surfdataqc ! Subset of surface data passing QC |
|---|
| 485 | INTEGER, INTENT(IN) :: kt ! Time step |
|---|
| 486 | INTEGER, INTENT(IN) :: kpi ! Model grid parameters |
|---|
| 487 | INTEGER, INTENT(IN) :: kpj |
|---|
| 488 | INTEGER, INTENT(IN) :: kit000 ! Number of the first time step |
|---|
| 489 | ! (kit000-1 = restart time) |
|---|
| 490 | INTEGER, INTENT(IN) :: kdaystp ! Number of time steps per day |
|---|
| 491 | INTEGER, INTENT(IN) :: k2dint ! Horizontal interpolation type (see header) |
|---|
| 492 | REAL(wp), INTENT(IN), DIMENSION(kpi,kpj) :: & |
|---|
| 493 | & psurf, & ! Model surface field |
|---|
| 494 | & psurfmask ! Land-sea mask |
|---|
| 495 | LOGICAL, INTENT(IN) :: ldnightav ! Logical for averaging night-time data |
|---|
| 496 | REAL(KIND=wp), INTENT(IN) :: & |
|---|
| 497 | & plamscl, & ! Diameter in metres of obs footprint in E/W, N/S directions |
|---|
| 498 | & pphiscl ! This is the full width (rather than half-width) |
|---|
| 499 | LOGICAL, INTENT(IN) :: & |
|---|
| 500 | & lindegrees ! T=> plamscl and pphiscl are specified in degrees, F=> in metres |
|---|
| 501 | |
|---|
| 502 | !! * Local declarations |
|---|
| 503 | INTEGER :: ji |
|---|
| 504 | INTEGER :: jj |
|---|
| 505 | INTEGER :: jobs |
|---|
| 506 | INTEGER :: inrc |
|---|
| 507 | INTEGER :: isurf |
|---|
| 508 | INTEGER :: iobs |
|---|
| 509 | INTEGER :: imaxifp, imaxjfp |
|---|
| 510 | INTEGER :: imodi, imodj |
|---|
| 511 | INTEGER :: idayend |
|---|
| 512 | INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: & |
|---|
| 513 | & igrdi, & |
|---|
| 514 | & igrdj, & |
|---|
| 515 | & igrdip1, & |
|---|
| 516 | & igrdjp1 |
|---|
| 517 | INTEGER, DIMENSION(:,:), SAVE, ALLOCATABLE :: & |
|---|
| 518 | & icount_night, & |
|---|
| 519 | & imask_night |
|---|
| 520 | REAL(wp) :: zlam |
|---|
| 521 | REAL(wp) :: zphi |
|---|
| 522 | REAL(wp), DIMENSION(1) :: zext, zobsmask |
|---|
| 523 | REAL(wp) :: zdaystp |
|---|
| 524 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: & |
|---|
| 525 | & zweig, & |
|---|
| 526 | & zmask, & |
|---|
| 527 | & zsurf, & |
|---|
| 528 | & zsurfm, & |
|---|
| 529 | & zsurftmp, & |
|---|
| 530 | & zglam, & |
|---|
| 531 | & zgphi, & |
|---|
| 532 | & zglamf, & |
|---|
| 533 | & zgphif |
|---|
| 534 | |
|---|
| 535 | REAL(wp), DIMENSION(:,:), SAVE, ALLOCATABLE :: & |
|---|
| 536 | & zintmp, & |
|---|
| 537 | & zouttmp, & |
|---|
| 538 | & zmeanday ! to compute model sst in region of 24h daylight (pole) |
|---|
| 539 | |
|---|
| 540 | !------------------------------------------------------------------------ |
|---|
| 541 | ! Local initialization |
|---|
| 542 | !------------------------------------------------------------------------ |
|---|
| 543 | ! Record and data counters |
|---|
| 544 | inrc = kt - kit000 + 2 |
|---|
| 545 | isurf = surfdataqc%nsstp(inrc) |
|---|
| 546 | |
|---|
| 547 | ! Work out the maximum footprint size for the |
|---|
| 548 | ! interpolation/averaging in model grid-points - has to be even. |
|---|
| 549 | |
|---|
| 550 | CALL obs_max_fpsize( k2dint, plamscl, pphiscl, lindegrees, psurfmask, imaxifp, imaxjfp ) |
|---|
| 551 | |
|---|
| 552 | |
|---|
| 553 | IF ( ldnightav ) THEN |
|---|
| 554 | |
|---|
| 555 | ! Initialize array for night mean |
|---|
| 556 | IF ( kt == 0 ) THEN |
|---|
| 557 | ALLOCATE ( icount_night(kpi,kpj) ) |
|---|
| 558 | ALLOCATE ( imask_night(kpi,kpj) ) |
|---|
| 559 | ALLOCATE ( zintmp(kpi,kpj) ) |
|---|
| 560 | ALLOCATE ( zouttmp(kpi,kpj) ) |
|---|
| 561 | ALLOCATE ( zmeanday(kpi,kpj) ) |
|---|
| 562 | nday_qsr = -1 ! initialisation flag for nbc_dcy |
|---|
| 563 | ENDIF |
|---|
| 564 | |
|---|
| 565 | ! Night-time means are calculated for night-time values over timesteps: |
|---|
| 566 | ! [1 <= kt <= kdaystp], [kdaystp+1 <= kt <= 2*kdaystp], ..... |
|---|
| 567 | idayend = MOD( kt - kit000 + 1, kdaystp ) |
|---|
| 568 | |
|---|
| 569 | ! Initialize night-time mean for first timestep of the day |
|---|
| 570 | IF ( idayend == 1 .OR. kt == 0 ) THEN |
|---|
| 571 | DO_2D( 1, 1, 1, 1 ) |
|---|
| 572 | surfdataqc%vdmean(ji,jj) = 0.0 |
|---|
| 573 | zmeanday(ji,jj) = 0.0 |
|---|
| 574 | icount_night(ji,jj) = 0 |
|---|
| 575 | END_2D |
|---|
| 576 | ENDIF |
|---|
| 577 | |
|---|
| 578 | zintmp(:,:) = 0.0 |
|---|
| 579 | zouttmp(:,:) = sbc_dcy( zintmp(:,:), .TRUE. ) |
|---|
| 580 | imask_night(:,:) = INT( zouttmp(:,:) ) |
|---|
| 581 | |
|---|
| 582 | DO_2D( 1, 1, 1, 1 ) |
|---|
| 583 | ! Increment the temperature field for computing night mean and counter |
|---|
| 584 | surfdataqc%vdmean(ji,jj) = surfdataqc%vdmean(ji,jj) & |
|---|
| 585 | & + psurf(ji,jj) * REAL( imask_night(ji,jj) ) |
|---|
| 586 | zmeanday(ji,jj) = zmeanday(ji,jj) + psurf(ji,jj) |
|---|
| 587 | icount_night(ji,jj) = icount_night(ji,jj) + imask_night(ji,jj) |
|---|
| 588 | END_2D |
|---|
| 589 | |
|---|
| 590 | ! Compute the night-time mean at the end of the day |
|---|
| 591 | zdaystp = 1.0 / REAL( kdaystp ) |
|---|
| 592 | IF ( idayend == 0 ) THEN |
|---|
| 593 | IF (lwp) WRITE(numout,*) 'Calculating surfdataqc%vdmean on time-step: ',kt |
|---|
| 594 | DO_2D( 1, 1, 1, 1 ) |
|---|
| 595 | ! Test if "no night" point |
|---|
| 596 | IF ( icount_night(ji,jj) > 0 ) THEN |
|---|
| 597 | surfdataqc%vdmean(ji,jj) = surfdataqc%vdmean(ji,jj) & |
|---|
| 598 | & / REAL( icount_night(ji,jj) ) |
|---|
| 599 | ELSE |
|---|
| 600 | !At locations where there is no night (e.g. poles), |
|---|
| 601 | ! calculate daily mean instead of night-time mean. |
|---|
| 602 | surfdataqc%vdmean(ji,jj) = zmeanday(ji,jj) * zdaystp |
|---|
| 603 | ENDIF |
|---|
| 604 | END_2D |
|---|
| 605 | ENDIF |
|---|
| 606 | |
|---|
| 607 | ENDIF |
|---|
| 608 | |
|---|
| 609 | ! Get the data for interpolation |
|---|
| 610 | |
|---|
| 611 | ALLOCATE( & |
|---|
| 612 | & zweig(imaxifp,imaxjfp,1), & |
|---|
| 613 | & igrdi(imaxifp,imaxjfp,isurf), & |
|---|
| 614 | & igrdj(imaxifp,imaxjfp,isurf), & |
|---|
| 615 | & zglam(imaxifp,imaxjfp,isurf), & |
|---|
| 616 | & zgphi(imaxifp,imaxjfp,isurf), & |
|---|
| 617 | & zmask(imaxifp,imaxjfp,isurf), & |
|---|
| 618 | & zsurf(imaxifp,imaxjfp,isurf), & |
|---|
| 619 | & zsurftmp(imaxifp,imaxjfp,isurf), & |
|---|
| 620 | & zglamf(imaxifp+1,imaxjfp+1,isurf), & |
|---|
| 621 | & zgphif(imaxifp+1,imaxjfp+1,isurf), & |
|---|
| 622 | & igrdip1(imaxifp+1,imaxjfp+1,isurf), & |
|---|
| 623 | & igrdjp1(imaxifp+1,imaxjfp+1,isurf) & |
|---|
| 624 | & ) |
|---|
| 625 | |
|---|
| 626 | DO jobs = surfdataqc%nsurfup + 1, surfdataqc%nsurfup + isurf |
|---|
| 627 | iobs = jobs - surfdataqc%nsurfup |
|---|
| 628 | DO ji = 0, imaxifp |
|---|
| 629 | imodi = surfdataqc%mi(jobs) - int(imaxifp/2) + ji - 1 |
|---|
| 630 | ! |
|---|
| 631 | !Deal with wrap around in longitude |
|---|
| 632 | IF ( imodi < 1 ) imodi = imodi + jpiglo |
|---|
| 633 | IF ( imodi > jpiglo ) imodi = imodi - jpiglo |
|---|
| 634 | ! |
|---|
| 635 | DO jj = 0, imaxjfp |
|---|
| 636 | imodj = surfdataqc%mj(jobs) - int(imaxjfp/2) + jj - 1 |
|---|
| 637 | !If model values are out of the domain to the north/south then |
|---|
| 638 | !set them to be the edge of the domain |
|---|
| 639 | IF ( imodj < 1 ) imodj = 1 |
|---|
| 640 | IF ( imodj > jpjglo ) imodj = jpjglo |
|---|
| 641 | ! |
|---|
| 642 | igrdip1(ji+1,jj+1,iobs) = imodi |
|---|
| 643 | igrdjp1(ji+1,jj+1,iobs) = imodj |
|---|
| 644 | ! |
|---|
| 645 | IF ( ji >= 1 .AND. jj >= 1 ) THEN |
|---|
| 646 | igrdi(ji,jj,iobs) = imodi |
|---|
| 647 | igrdj(ji,jj,iobs) = imodj |
|---|
| 648 | ENDIF |
|---|
| 649 | ! |
|---|
| 650 | END DO |
|---|
| 651 | END DO |
|---|
| 652 | END DO |
|---|
| 653 | |
|---|
| 654 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
|---|
| 655 | & igrdi, igrdj, glamt, zglam ) |
|---|
| 656 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
|---|
| 657 | & igrdi, igrdj, gphit, zgphi ) |
|---|
| 658 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
|---|
| 659 | & igrdi, igrdj, psurfmask, zmask ) |
|---|
| 660 | CALL obs_int_comm_2d( imaxifp, imaxjfp, isurf, kpi, kpj, & |
|---|
| 661 | & igrdi, igrdj, psurf, zsurf ) |
|---|
| 662 | CALL obs_int_comm_2d( imaxifp+1, imaxjfp+1, isurf, kpi, kpj, & |
|---|
| 663 | & igrdip1, igrdjp1, glamf, zglamf ) |
|---|
| 664 | CALL obs_int_comm_2d( imaxifp+1, imaxjfp+1, isurf, kpi, kpj, & |
|---|
| 665 | & igrdip1, igrdjp1, gphif, zgphif ) |
|---|
| 666 | |
|---|
| 667 | ! At the end of the day get interpolated means |
|---|
| 668 | IF ( idayend == 0 .AND. ldnightav ) THEN |
|---|
| 669 | |
|---|
| 670 | ALLOCATE( & |
|---|
| 671 | & zsurfm(imaxifp,imaxjfp,isurf) & |
|---|
| 672 | & ) |
|---|
| 673 | |
|---|
| 674 | CALL obs_int_comm_2d( imaxifp,imaxjfp, isurf, kpi, kpj, igrdi, igrdj, & |
|---|
| 675 | & surfdataqc%vdmean(:,:), zsurfm ) |
|---|
| 676 | |
|---|
| 677 | ENDIF |
|---|
| 678 | |
|---|
| 679 | ! Loop over observations |
|---|
| 680 | DO jobs = surfdataqc%nsurfup + 1, surfdataqc%nsurfup + isurf |
|---|
| 681 | |
|---|
| 682 | iobs = jobs - surfdataqc%nsurfup |
|---|
| 683 | |
|---|
| 684 | IF ( kt /= surfdataqc%mstp(jobs) ) THEN |
|---|
| 685 | |
|---|
| 686 | IF(lwp) THEN |
|---|
| 687 | WRITE(numout,*) |
|---|
| 688 | WRITE(numout,*) ' E R R O R : Observation', & |
|---|
| 689 | & ' time step is not consistent with the', & |
|---|
| 690 | & ' model time step' |
|---|
| 691 | WRITE(numout,*) ' =========' |
|---|
| 692 | WRITE(numout,*) |
|---|
| 693 | WRITE(numout,*) ' Record = ', jobs, & |
|---|
| 694 | & ' kt = ', kt, & |
|---|
| 695 | & ' mstp = ', surfdataqc%mstp(jobs), & |
|---|
| 696 | & ' ntyp = ', surfdataqc%ntyp(jobs) |
|---|
| 697 | ENDIF |
|---|
| 698 | CALL ctl_stop( 'obs_surf_opt', 'Inconsistent time' ) |
|---|
| 699 | |
|---|
| 700 | ENDIF |
|---|
| 701 | |
|---|
| 702 | zlam = surfdataqc%rlam(jobs) |
|---|
| 703 | zphi = surfdataqc%rphi(jobs) |
|---|
| 704 | |
|---|
| 705 | IF ( ldnightav .AND. idayend == 0 ) THEN |
|---|
| 706 | ! Night-time averaged data |
|---|
| 707 | zsurftmp(:,:,iobs) = zsurfm(:,:,iobs) |
|---|
| 708 | ELSE |
|---|
| 709 | zsurftmp(:,:,iobs) = zsurf(:,:,iobs) |
|---|
| 710 | ENDIF |
|---|
| 711 | |
|---|
| 712 | IF ( k2dint <= 4 ) THEN |
|---|
| 713 | |
|---|
| 714 | ! Get weights to interpolate the model value to the observation point |
|---|
| 715 | CALL obs_int_h2d_init( 1, 1, k2dint, zlam, zphi, & |
|---|
| 716 | & zglam(:,:,iobs), zgphi(:,:,iobs), & |
|---|
| 717 | & zmask(:,:,iobs), zweig, zobsmask ) |
|---|
| 718 | |
|---|
| 719 | ! Interpolate the model value to the observation point |
|---|
| 720 | CALL obs_int_h2d( 1, 1, zweig, zsurftmp(:,:,iobs), zext ) |
|---|
| 721 | |
|---|
| 722 | ELSE |
|---|
| 723 | |
|---|
| 724 | ! Get weights to average the model SLA to the observation footprint |
|---|
| 725 | CALL obs_avg_h2d_init( 1, 1, imaxifp, imaxjfp, k2dint, zlam, zphi, & |
|---|
| 726 | & zglam(:,:,iobs), zgphi(:,:,iobs), & |
|---|
| 727 | & zglamf(:,:,iobs), zgphif(:,:,iobs), & |
|---|
| 728 | & zmask(:,:,iobs), plamscl, pphiscl, & |
|---|
| 729 | & lindegrees, zweig ) |
|---|
| 730 | |
|---|
| 731 | ! Average the model SST to the observation footprint |
|---|
| 732 | CALL obs_avg_h2d( 1, 1, imaxifp, imaxjfp, & |
|---|
| 733 | & zweig, zsurftmp(:,:,iobs), zext ) |
|---|
| 734 | |
|---|
| 735 | ENDIF |
|---|
| 736 | |
|---|
| 737 | IF ( TRIM(surfdataqc%cvars(1)) == 'SLA' .AND. surfdataqc%nextra == 2 ) THEN |
|---|
| 738 | ! ... Remove the MDT from the SSH at the observation point to get the SLA |
|---|
| 739 | surfdataqc%rext(jobs,1) = zext(1) |
|---|
| 740 | surfdataqc%rmod(jobs,1) = surfdataqc%rext(jobs,1) - surfdataqc%rext(jobs,2) |
|---|
| 741 | ELSE |
|---|
| 742 | surfdataqc%rmod(jobs,1) = zext(1) |
|---|
| 743 | ENDIF |
|---|
| 744 | |
|---|
| 745 | IF ( zext(1) == obfillflt ) THEN |
|---|
| 746 | ! If the observation value is a fill value, set QC flag to bad |
|---|
| 747 | surfdataqc%nqc(jobs) = 4 |
|---|
| 748 | ENDIF |
|---|
| 749 | |
|---|
| 750 | END DO |
|---|
| 751 | |
|---|
| 752 | ! Deallocate the data for interpolation |
|---|
| 753 | DEALLOCATE( & |
|---|
| 754 | & zweig, & |
|---|
| 755 | & igrdi, & |
|---|
| 756 | & igrdj, & |
|---|
| 757 | & zglam, & |
|---|
| 758 | & zgphi, & |
|---|
| 759 | & zmask, & |
|---|
| 760 | & zsurf, & |
|---|
| 761 | & zsurftmp, & |
|---|
| 762 | & zglamf, & |
|---|
| 763 | & zgphif, & |
|---|
| 764 | & igrdip1,& |
|---|
| 765 | & igrdjp1 & |
|---|
| 766 | & ) |
|---|
| 767 | |
|---|
| 768 | ! At the end of the day also deallocate night-time mean array |
|---|
| 769 | IF ( idayend == 0 .AND. ldnightav ) THEN |
|---|
| 770 | DEALLOCATE( & |
|---|
| 771 | & zsurfm & |
|---|
| 772 | & ) |
|---|
| 773 | ENDIF |
|---|
| 774 | ! |
|---|
| 775 | surfdataqc%nsurfup = surfdataqc%nsurfup + isurf |
|---|
| 776 | ! |
|---|
| 777 | END SUBROUTINE obs_surf_opt |
|---|
| 778 | |
|---|
| 779 | !!====================================================================== |
|---|
| 780 | END MODULE obs_oper |
|---|
