[2287] | 1 | !!---------------------------------------------------------------------- |
---|
| 2 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
---|
| 3 | !! $Id$ |
---|
| 4 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
---|
| 5 | !!---------------------------------------------------------------------- |
---|
| 6 | |
---|
[2202] | 7 | SUBROUTINE read_ghrsst( cdfilename, inpfile, kunit, ldwp, ldgrid ) |
---|
| 8 | !!--------------------------------------------------------------------- |
---|
| 9 | !! |
---|
| 10 | !! ** ROUTINE read_ghrsst ** |
---|
| 11 | !! |
---|
| 12 | !! ** Purpose : Read from file the GHRSST observations. |
---|
| 13 | !! |
---|
| 14 | !! ** Method : The data file is a NetCDF file. |
---|
| 15 | !! |
---|
| 16 | !! ** Action : |
---|
| 17 | !! |
---|
| 18 | !! References : |
---|
| 19 | !! |
---|
| 20 | !! History : |
---|
| 21 | !! ! 09-01 (K. Mogensen) Original based on old versions |
---|
| 22 | !!---------------------------------------------------------------------- |
---|
| 23 | !! * Arguments |
---|
| 24 | CHARACTER(LEN=*) :: cdfilename ! Input filename |
---|
| 25 | TYPE(obfbdata) :: inpfile ! Output obfbdata structure |
---|
| 26 | INTEGER :: kunit ! Unit for output |
---|
| 27 | LOGICAL :: ldwp ! Print info |
---|
| 28 | LOGICAL :: ldgrid ! Save grid info in data structure |
---|
| 29 | !! * Local declarations |
---|
| 30 | CHARACTER(LEN=12),PARAMETER :: cpname = 'read_ghrsst' |
---|
| 31 | INTEGER :: i_file_id ! netcdf IDS |
---|
| 32 | INTEGER :: i_time_id |
---|
| 33 | INTEGER :: i_ni_id |
---|
| 34 | INTEGER :: i_data_id |
---|
| 35 | INTEGER :: i_var_id |
---|
| 36 | INTEGER :: i_data ! Number of data per parameter in current file |
---|
| 37 | INTEGER :: i_time ! Number of reference times in file |
---|
| 38 | INTEGER, DIMENSION(:), POINTER :: & |
---|
| 39 | & i_reftime ! Reference time in file in seconds since 1/1/1981. |
---|
| 40 | INTEGER, DIMENSION(:,:), POINTER :: & |
---|
| 41 | & i_dtime, & ! Offset in seconds since reference time |
---|
| 42 | & i_qc, & ! Quality control flag. |
---|
| 43 | & i_type ! Type of SST measurement. |
---|
| 44 | REAL(wp), DIMENSION(:), POINTER :: & |
---|
| 45 | & z_phi, & ! Latitudes |
---|
| 46 | & z_lam ! Longitudes |
---|
| 47 | REAL(wp), DIMENSION(:,:), POINTER :: & |
---|
| 48 | & z_sst ! SST data |
---|
| 49 | INTEGER, PARAMETER :: imaxdim = 2 ! Assumed maximum for no. dims. in file |
---|
| 50 | INTEGER, DIMENSION(2) :: idims ! Dimensions in file |
---|
| 51 | INTEGER :: iilen ! Length of netCDF attributes |
---|
| 52 | INTEGER :: itype ! Typeof netCDF attributes |
---|
| 53 | REAL(KIND=wp) :: zsca ! Scale factor |
---|
| 54 | REAL(KIND=wp) :: zoff ! Offset for data in netcdf file |
---|
| 55 | REAL(KIND=wp) :: z_offset ! Offset for time conversion |
---|
| 56 | REAL(KIND=wp) :: zfill ! Fill value in netcdf file |
---|
| 57 | CHARACTER (len=33) :: creftime ! Reference time of file |
---|
| 58 | INTEGER :: i_refyear ! Integer version of reference time |
---|
| 59 | INTEGER :: i_refmonth |
---|
| 60 | INTEGER :: i_refday |
---|
| 61 | INTEGER :: i_refhour |
---|
| 62 | INTEGER :: i_refmin |
---|
| 63 | INTEGER :: i_refsec |
---|
| 64 | INTEGER :: ichunk |
---|
| 65 | INTEGER :: jtim |
---|
| 66 | INTEGER :: jobs |
---|
| 67 | INTEGER :: iobs |
---|
| 68 | |
---|
| 69 | CALL chkerr( nf90_open( TRIM( cdfilename ), nf90_nowrite, & |
---|
| 70 | & i_file_id, chunksize=ichunk), cpname, __LINE__ ) |
---|
| 71 | |
---|
| 72 | ! Get the netCDF dimensions |
---|
| 73 | |
---|
| 74 | CALL chkerr( nf90_inq_dimid( i_file_id, 'time', i_time_id ), & |
---|
| 75 | & cpname, __LINE__ ) |
---|
| 76 | CALL chkerr( nf90_inquire_dimension( i_file_id, i_time_id, & |
---|
| 77 | & len = i_time ), & |
---|
| 78 | & cpname, __LINE__ ) |
---|
| 79 | |
---|
| 80 | CALL chkerr( nf90_inq_dimid( i_file_id, 'ni', i_ni_id ), & |
---|
| 81 | & cpname, __LINE__ ) |
---|
| 82 | CALL chkerr( nf90_inquire_dimension( i_file_id, i_ni_id, & |
---|
| 83 | & len = i_data ), & |
---|
| 84 | & cpname, __LINE__ ) |
---|
| 85 | |
---|
| 86 | |
---|
| 87 | ! Allocate NetCDF variables |
---|
| 88 | |
---|
| 89 | ALLOCATE( & |
---|
| 90 | & i_reftime ( i_time ), & |
---|
| 91 | & i_dtime ( i_data,i_time ), & |
---|
| 92 | & i_qc ( i_data,i_time ), & |
---|
| 93 | & i_type ( i_data,i_time ), & |
---|
| 94 | & z_phi ( i_data ), & |
---|
| 95 | & z_lam ( i_data ), & |
---|
| 96 | & z_sst ( i_data,i_time ) & |
---|
| 97 | & ) |
---|
| 98 | |
---|
| 99 | ! Get reference time of file which is in seconds since 1981/1/1 00:00. |
---|
| 100 | |
---|
| 101 | CALL chkerr( nf90_inq_varid( i_file_id, 'time', i_var_id ), & |
---|
| 102 | & cpname, __LINE__ ) |
---|
| 103 | idims(1) = i_time |
---|
| 104 | CALL chkdim( i_file_id, i_var_id, 1, idims, cpname, __LINE__ ) |
---|
| 105 | CALL chkerr( nf90_get_var ( i_file_id, i_var_id, i_reftime),& |
---|
| 106 | & cpname, __LINE__ ) |
---|
| 107 | IF (nf90_inquire_attribute( i_file_id, i_var_id, "units") & |
---|
| 108 | & == nf90_noerr) THEN |
---|
| 109 | CALL chkerr( nf90_get_att( i_file_id, i_var_id, & |
---|
| 110 | & "units",creftime), cpname, __LINE__ ) |
---|
| 111 | ELSE |
---|
| 112 | creftime = "seconds since 1981-01-01 00:00:00" |
---|
| 113 | ENDIF |
---|
| 114 | READ(creftime(15:18),*)i_refyear |
---|
| 115 | READ(creftime(20:21),*)i_refmonth |
---|
| 116 | READ(creftime(23:24),*)i_refday |
---|
| 117 | READ(creftime(26:27),*)i_refhour |
---|
| 118 | READ(creftime(29:30),*)i_refmin |
---|
| 119 | READ(creftime(32:33),*)i_refsec |
---|
| 120 | !Work out offset in days between reference time and 1/1/1950. |
---|
| 121 | CALL greg2jul( i_refsec, i_refmin, i_refhour, i_refday, & |
---|
| 122 | & i_refmonth, i_refyear, z_offset) |
---|
| 123 | |
---|
| 124 | ! Get list of times for each ob in seconds relative to reference time |
---|
| 125 | |
---|
| 126 | CALL chkerr( nf90_inq_varid( i_file_id, 'sst_dtime', i_var_id ), & |
---|
| 127 | & cpname, __LINE__ ) |
---|
| 128 | idims(1) = i_data |
---|
| 129 | idims(2) = i_time |
---|
| 130 | CALL chkdim( i_file_id, i_var_id, 2, idims, cpname, __LINE__ ) |
---|
| 131 | CALL chkerr( nf90_get_var ( i_file_id, i_var_id, i_dtime),& |
---|
| 132 | & cpname, __LINE__ ) |
---|
| 133 | zsca = 1.0 |
---|
| 134 | IF (nf90_inquire_attribute( i_file_id, i_var_id, "scale_factor") & |
---|
| 135 | & == nf90_noerr) THEN |
---|
| 136 | CALL chkerr( nf90_get_att( i_file_id, i_var_id, & |
---|
| 137 | & "scale_factor",zsca), cpname, __LINE__ ) |
---|
| 138 | ENDIF |
---|
| 139 | zoff = 0.0 |
---|
| 140 | IF (nf90_inquire_attribute( i_file_id, i_var_id, "add_offset") & |
---|
| 141 | & == nf90_noerr) THEN |
---|
| 142 | CALL chkerr( nf90_get_att( i_file_id, i_var_id, & |
---|
| 143 | & "add_offset",zoff), cpname, __LINE__ ) |
---|
| 144 | ENDIF |
---|
| 145 | i_dtime(:,:) = NINT((zsca * FLOAT(i_dtime(:,:))) & |
---|
| 146 | & + zoff) |
---|
| 147 | |
---|
| 148 | ! Get longitudes |
---|
| 149 | |
---|
| 150 | CALL chkerr( nf90_inq_varid( i_file_id, 'lon', i_var_id ), & |
---|
| 151 | & cpname, __LINE__ ) |
---|
| 152 | idims(1) = i_data |
---|
| 153 | CALL chkdim( i_file_id, i_var_id, 1, idims, cpname, __LINE__ ) |
---|
| 154 | CALL chkerr( nf90_get_var ( i_file_id, i_var_id, z_lam), & |
---|
| 155 | & cpname, __LINE__ ) |
---|
| 156 | |
---|
| 157 | ! Get latitudes |
---|
| 158 | |
---|
| 159 | CALL chkerr( nf90_inq_varid( i_file_id, 'lat', i_var_id ), & |
---|
| 160 | & cpname, __LINE__ ) |
---|
| 161 | idims(1) = i_data |
---|
| 162 | CALL chkdim( i_file_id, i_var_id, 1, idims, cpname, __LINE__ ) |
---|
| 163 | CALL chkerr( nf90_get_var ( i_file_id, i_var_id, z_phi), & |
---|
| 164 | & cpname, __LINE__ ) |
---|
| 165 | |
---|
| 166 | ! Get SST data |
---|
| 167 | |
---|
| 168 | CALL chkerr( nf90_inq_varid( i_file_id, 'sea_surface_temperature', & |
---|
| 169 | & i_var_id ), & |
---|
| 170 | & cpname, __LINE__ ) |
---|
| 171 | idims(1) = i_data |
---|
| 172 | idims(2) = i_time |
---|
| 173 | CALL chkdim( i_file_id, i_var_id, 2, idims, cpname, __LINE__ ) |
---|
| 174 | CALL chkerr( nf90_get_var ( i_file_id, i_var_id, z_sst), & |
---|
| 175 | & cpname, __LINE__ ) |
---|
| 176 | zoff = 0. |
---|
| 177 | IF (nf90_inquire_attribute( i_file_id, i_var_id, "scale_factor") & |
---|
| 178 | & == nf90_noerr) THEN |
---|
| 179 | CALL chkerr( nf90_get_att( i_file_id, i_var_id, & |
---|
| 180 | & "scale_factor",zsca), cpname, __LINE__ ) |
---|
| 181 | ENDIF |
---|
| 182 | zsca = 1.0 |
---|
| 183 | IF (nf90_inquire_attribute( i_file_id, i_var_id, "scale_factor") & |
---|
| 184 | & == nf90_noerr) THEN |
---|
| 185 | CALL chkerr( nf90_get_att( i_file_id, i_var_id, & |
---|
| 186 | & "scale_factor",zsca), cpname, __LINE__ ) |
---|
| 187 | ENDIF |
---|
| 188 | zfill = 0.0 |
---|
| 189 | IF (nf90_inquire_attribute( i_file_id, i_var_id, "_FillValue") & |
---|
| 190 | & == nf90_noerr) THEN |
---|
| 191 | CALL chkerr( nf90_get_att( i_file_id, i_var_id, & |
---|
| 192 | & "_FillValue",zfill), cpname, __LINE__ ) |
---|
| 193 | ENDIF |
---|
| 194 | WHERE(z_sst(:,:) /= zfill) |
---|
| 195 | z_sst(:,:) = (zsca * z_sst(:,:)) + zoff |
---|
| 196 | ELSEWHERE |
---|
| 197 | z_sst(:,:) = fbrmdi |
---|
| 198 | END WHERE |
---|
| 199 | |
---|
| 200 | ! Get QC flag |
---|
| 201 | |
---|
| 202 | CALL chkerr( nf90_inq_varid( i_file_id, 'confidence_flag', i_var_id ), & |
---|
| 203 | & cpname, __LINE__ ) |
---|
| 204 | idims(1) = i_data |
---|
| 205 | idims(2) = i_time |
---|
| 206 | CALL chkdim( i_file_id, i_var_id, 2, idims, cpname, __LINE__ ) |
---|
| 207 | CALL chkerr( nf90_get_var ( i_file_id, i_var_id, i_qc), & |
---|
| 208 | & cpname, __LINE__ ) |
---|
| 209 | |
---|
| 210 | ! Get SST obs type |
---|
| 211 | |
---|
| 212 | CALL chkerr( nf90_inq_varid( i_file_id, 'data_source', i_var_id ), & |
---|
| 213 | & cpname, __LINE__ ) |
---|
| 214 | idims(1) = i_data |
---|
| 215 | idims(2) = i_time |
---|
| 216 | CALL chkdim( i_file_id, i_var_id, 2, idims, cpname, __LINE__ ) |
---|
| 217 | CALL chkerr( nf90_get_var ( i_file_id, i_var_id, i_type), & |
---|
| 218 | & cpname, __LINE__ ) |
---|
| 219 | |
---|
| 220 | ! Close the file |
---|
| 221 | |
---|
| 222 | CALL chkerr( nf90_close( i_file_id ), cpname, __LINE__ ) |
---|
| 223 | |
---|
| 224 | ! Fill the obfbdata structure |
---|
| 225 | |
---|
| 226 | ! Allocate obfbdata |
---|
| 227 | |
---|
| 228 | iobs = i_data * i_time |
---|
| 229 | CALL init_obfbdata( inpfile ) |
---|
| 230 | CALL alloc_obfbdata( inpfile, 1, iobs, 1, 0, 0, ldgrid ) |
---|
| 231 | inpfile%cname(1) = 'SST' |
---|
| 232 | |
---|
| 233 | ! Fill the obfbdata structure from input data |
---|
| 234 | |
---|
| 235 | inpfile%cdjuldref = "19500101000000" |
---|
| 236 | iobs = 0 |
---|
| 237 | DO jtim = 1, i_time |
---|
| 238 | DO jobs = 1, i_data |
---|
| 239 | iobs = iobs + 1 |
---|
| 240 | ! Characters |
---|
| 241 | WRITE(inpfile%cdwmo(iobs),'(A6,A2)') 'ghrsst',' ' |
---|
| 242 | WRITE(inpfile%cdtyp(iobs),'(I4)') i_type(jobs,jtim) |
---|
| 243 | ! Real values |
---|
| 244 | inpfile%plam(iobs) = z_lam(jobs) |
---|
| 245 | inpfile%pphi(iobs) = z_phi(jobs) |
---|
| 246 | inpfile%pob(1,iobs,1) = z_sst(jobs,jtim) |
---|
| 247 | inpfile%ptim(iobs) = & |
---|
| 248 | & REAL(i_reftime(jtim))/(60.*60.*24.) + & |
---|
| 249 | & z_offset + REAL(i_dtime(jobs,jtim))/(60.*60.*24.) |
---|
| 250 | inpfile%pdep(1,iobs) = 0.0 |
---|
| 251 | ! Integers |
---|
| 252 | inpfile%kindex(iobs) = iobs |
---|
| 253 | IF ( z_sst(jobs,jtim) == fbrmdi ) THEN |
---|
| 254 | inpfile%ioqc(iobs) = 4 |
---|
| 255 | inpfile%ivqc(iobs,1) = 4 |
---|
| 256 | inpfile%ivlqc(1,iobs,1) = 4 |
---|
| 257 | ELSE |
---|
| 258 | inpfile%ioqc(iobs) = i_qc(jobs,jtim) |
---|
| 259 | inpfile%ivqc(iobs,1) = i_qc(jobs,jtim) |
---|
| 260 | inpfile%ivlqc(1,iobs,1) = 1 |
---|
| 261 | ENDIF |
---|
| 262 | inpfile%ipqc(iobs) = 0 |
---|
| 263 | inpfile%ipqcf(:,iobs) = 0 |
---|
| 264 | inpfile%itqc(iobs) = 0 |
---|
| 265 | inpfile%itqcf(:,iobs) = 0 |
---|
| 266 | inpfile%ivqcf(:,iobs,1) = 0 |
---|
| 267 | inpfile%ioqcf(:,iobs) = 0 |
---|
| 268 | inpfile%idqc(1,iobs) = 0 |
---|
| 269 | inpfile%idqcf(1,1,iobs) = 0 |
---|
| 270 | inpfile%ivlqcf(:,1,iobs,1) = 0 |
---|
| 271 | END DO |
---|
| 272 | END DO |
---|
| 273 | |
---|
| 274 | DEALLOCATE( & |
---|
| 275 | & i_reftime, & |
---|
| 276 | & i_dtime, & |
---|
| 277 | & i_qc, & |
---|
| 278 | & i_type, & |
---|
| 279 | & z_phi, & |
---|
| 280 | & z_lam, & |
---|
| 281 | & z_sst & |
---|
| 282 | & ) |
---|
| 283 | |
---|
| 284 | END SUBROUTINE read_ghrsst |
---|
| 285 | |
---|
| 286 | |
---|