[2128] | 1 | MODULE obs_read_altbias |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE obs_readaltbias *** |
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| 4 | !! Observation diagnostics: Read the bias for SLA data |
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| 5 | !!====================================================================== |
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| 6 | |
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| 7 | !!---------------------------------------------------------------------- |
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| 8 | !! obs_rea_altbias : Driver for reading altimeter bias |
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| 9 | !!---------------------------------------------------------------------- |
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| 10 | |
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| 11 | !! * Modules used |
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| 12 | USE par_kind, ONLY : & ! Precision variables |
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| 13 | & wp, & |
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| 14 | & dp, & |
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| 15 | & sp |
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| 16 | USE par_oce, ONLY : & ! Domain parameters |
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| 17 | & jpi, & |
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| 18 | & jpj, & |
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| 19 | & jpim1 |
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| 20 | USE in_out_manager, ONLY : & ! I/O manager |
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| 21 | & lwp, & |
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| 22 | & numout |
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| 23 | USE obs_surf_def ! Surface observation definitions |
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| 24 | USE dom_oce, ONLY : & ! Domain variables |
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| 25 | & tmask, & |
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| 26 | & tmask_i, & |
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| 27 | & e1t, & |
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| 28 | & e2t, & |
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| 29 | & gphit |
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| 30 | USE oce, ONLY : & ! Model variables |
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| 31 | & sshn |
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| 32 | USE obs_inter_h2d |
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| 33 | USE obs_utils ! Various observation tools |
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| 34 | USE obs_inter_sup |
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| 35 | |
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| 36 | IMPLICIT NONE |
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| 37 | |
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| 38 | !! * Routine accessibility |
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| 39 | PRIVATE |
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| 40 | |
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| 41 | PUBLIC obs_rea_altbias ! Read the altimeter bias |
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| 42 | |
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[2287] | 43 | !!---------------------------------------------------------------------- |
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| 44 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 45 | !! $Id$ |
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| 46 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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| 47 | !!---------------------------------------------------------------------- |
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| 48 | |
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[2128] | 49 | CONTAINS |
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| 50 | |
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| 51 | SUBROUTINE obs_rea_altbias( kslano, sladata, k2dint, bias_file ) |
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| 52 | !!--------------------------------------------------------------------- |
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| 53 | !! |
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| 54 | !! *** ROUTINE obs_rea_altbias *** |
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| 55 | !! |
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| 56 | !! ** Purpose : Read from file the bias data |
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| 57 | !! |
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| 58 | !! ** Method : |
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| 59 | !! |
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| 60 | !! ** Action : |
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| 61 | !! |
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| 62 | !! References : |
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| 63 | !! |
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| 64 | !! History : |
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| 65 | !! ! : 2008-02 (D. Lea) Initial version |
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| 66 | !!---------------------------------------------------------------------- |
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| 67 | !! * Modules used |
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| 68 | USE iom |
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[2715] | 69 | USE wrk_nemo, ONLY: wrk_in_use, wrk_not_released |
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| 70 | USE wrk_nemo, ONLY: z_altbias => wrk_2d_1 ! Array to store the alt bias values |
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| 71 | ! |
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[2128] | 72 | !! * Arguments |
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| 73 | INTEGER, INTENT(IN) :: kslano ! Number of SLA Products |
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| 74 | TYPE(obs_surf), DIMENSION(kslano), INTENT(INOUT) :: & |
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| 75 | & sladata ! SLA data |
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| 76 | INTEGER, INTENT(IN) :: k2dint |
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| 77 | CHARACTER(LEN=128) :: bias_file |
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| 78 | |
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| 79 | !! * Local declarations |
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| 80 | |
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| 81 | CHARACTER(LEN=12), PARAMETER :: cpname = 'obs_rea_altbias' |
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| 82 | |
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| 83 | INTEGER :: jslano ! Data set loop variable |
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| 84 | INTEGER :: jobs ! Obs loop variable |
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| 85 | INTEGER :: jpialtbias ! Number of grid point in latitude for the bias |
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| 86 | INTEGER :: jpjaltbias ! Number of grid point in longitude for the bias |
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| 87 | INTEGER :: iico ! Grid point indicies |
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| 88 | INTEGER :: ijco |
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| 89 | INTEGER :: i_nx_id ! Index to read the NetCDF file |
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| 90 | INTEGER :: i_ny_id ! |
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| 91 | INTEGER :: i_file_id ! |
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| 92 | INTEGER :: i_var_id |
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| 93 | |
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| 94 | REAL(wp), DIMENSION(1) :: & |
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| 95 | & zext, & |
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| 96 | & zobsmask |
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| 97 | REAL(wp), DIMENSION(2,2,1) :: & |
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| 98 | & zweig |
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| 99 | REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: & |
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| 100 | & zmask, & |
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| 101 | & zbias, & |
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| 102 | & zglam, & |
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| 103 | & zgphi |
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| 104 | REAL(wp) :: zlam |
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| 105 | REAL(wp) :: zphi |
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| 106 | INTEGER, DIMENSION(:,:,:), ALLOCATABLE :: & |
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| 107 | & igrdi, & |
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| 108 | & igrdj |
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| 109 | INTEGER :: numaltbias |
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| 110 | |
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[2715] | 111 | IF(wrk_in_use(2, 1))THEN |
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| 112 | CALL ctl_stop('obs_rea_altbias : requested workspace array unavailable.') |
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| 113 | RETURN |
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| 114 | END IF |
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| 115 | |
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[2128] | 116 | IF(lwp)WRITE(numout,*) |
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| 117 | IF(lwp)WRITE(numout,*) ' obs_rea_altbias : ' |
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| 118 | IF(lwp)WRITE(numout,*) ' ------------- ' |
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| 119 | IF(lwp)WRITE(numout,*) ' Read altimeter bias' |
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| 120 | |
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| 121 | ! Open the file |
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| 122 | |
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| 123 | z_altbias(:,:)=0.0_wp |
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| 124 | numaltbias=0 |
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| 125 | |
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| 126 | IF(lwp)WRITE(numout,*) 'Opening ',bias_file |
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| 127 | |
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| 128 | CALL iom_open( bias_file, numaltbias, ldstop=.FALSE. ) |
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| 129 | |
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| 130 | |
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| 131 | IF (numaltbias .GT. 0) THEN |
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| 132 | |
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| 133 | ! Get the Alt bias data |
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| 134 | |
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| 135 | CALL iom_get( numaltbias, jpdom_data, 'altbias', z_altbias(:,:), 1 ) |
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| 136 | |
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| 137 | ! Close the file |
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| 138 | |
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| 139 | CALL iom_close(numaltbias) |
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| 140 | |
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| 141 | ELSE |
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| 142 | |
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| 143 | IF(lwp)WRITE(numout,*) 'no file found' |
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| 144 | |
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| 145 | ENDIF |
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| 146 | |
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| 147 | ! Intepolate the bias already on the model grid at the observation point |
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| 148 | |
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| 149 | DO jslano = 1, kslano |
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| 150 | |
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| 151 | ALLOCATE( & |
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| 152 | & igrdi(2,2,sladata(jslano)%nsurf), & |
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| 153 | & igrdj(2,2,sladata(jslano)%nsurf), & |
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| 154 | & zglam(2,2,sladata(jslano)%nsurf), & |
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| 155 | & zgphi(2,2,sladata(jslano)%nsurf), & |
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| 156 | & zmask(2,2,sladata(jslano)%nsurf), & |
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| 157 | & zbias(2,2,sladata(jslano)%nsurf) & |
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| 158 | & ) |
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| 159 | |
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| 160 | DO jobs = 1, sladata(jslano)%nsurf |
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| 161 | |
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| 162 | igrdi(1,1,jobs) = sladata(jslano)%mi(jobs)-1 |
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| 163 | igrdj(1,1,jobs) = sladata(jslano)%mj(jobs)-1 |
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| 164 | igrdi(1,2,jobs) = sladata(jslano)%mi(jobs)-1 |
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| 165 | igrdj(1,2,jobs) = sladata(jslano)%mj(jobs) |
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| 166 | igrdi(2,1,jobs) = sladata(jslano)%mi(jobs) |
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| 167 | igrdj(2,1,jobs) = sladata(jslano)%mj(jobs)-1 |
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| 168 | igrdi(2,2,jobs) = sladata(jslano)%mi(jobs) |
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| 169 | igrdj(2,2,jobs) = sladata(jslano)%mj(jobs) |
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| 170 | |
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| 171 | END DO |
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| 172 | |
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| 173 | CALL obs_int_comm_2d( 2, 2, sladata(jslano)%nsurf, & |
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| 174 | & igrdi, igrdj, glamt, zglam ) |
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| 175 | CALL obs_int_comm_2d( 2, 2, sladata(jslano)%nsurf, & |
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| 176 | & igrdi, igrdj, gphit, zgphi ) |
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| 177 | CALL obs_int_comm_2d( 2, 2, sladata(jslano)%nsurf, & |
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| 178 | & igrdi, igrdj, tmask(:,:,1), zmask ) |
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| 179 | CALL obs_int_comm_2d( 2, 2, sladata(jslano)%nsurf, & |
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| 180 | & igrdi, igrdj, z_altbias, zbias ) |
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| 181 | |
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| 182 | DO jobs = 1, sladata(jslano)%nsurf |
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| 183 | |
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| 184 | zlam = sladata(jslano)%rlam(jobs) |
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| 185 | zphi = sladata(jslano)%rphi(jobs) |
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| 186 | iico = sladata(jslano)%mi(jobs) |
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| 187 | ijco = sladata(jslano)%mj(jobs) |
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| 188 | |
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| 189 | CALL obs_int_h2d_init( 1, 1, k2dint, zlam, zphi, & |
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| 190 | & zglam(:,:,jobs), zgphi(:,:,jobs), & |
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| 191 | & zmask(:,:,jobs), zweig, zobsmask ) |
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| 192 | |
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| 193 | CALL obs_int_h2d( 1, 1, & |
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| 194 | & zweig, zbias(:,:,jobs), zext ) |
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| 195 | |
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| 196 | ! adjust mdt with bias field |
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| 197 | sladata(jslano)%rext(jobs,2) = & |
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| 198 | sladata(jslano)%rext(jobs,2) - zext(1) |
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| 199 | |
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| 200 | END DO |
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| 201 | |
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| 202 | DEALLOCATE( & |
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| 203 | & igrdi, & |
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| 204 | & igrdj, & |
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| 205 | & zglam, & |
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| 206 | & zgphi, & |
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| 207 | & zmask, & |
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| 208 | & zbias & |
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| 209 | & ) |
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| 210 | |
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| 211 | END DO |
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| 212 | |
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[2715] | 213 | IF(wrk_not_released(2, 1))THEN |
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| 214 | CALL ctl_stop('obs_rea_altbias : failed to release workspace array.') |
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| 215 | END IF |
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| 216 | |
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[2128] | 217 | END SUBROUTINE obs_rea_altbias |
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| 218 | |
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| 219 | |
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| 220 | |
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| 221 | END MODULE obs_read_altbias |
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