[gradsusr] netcdf file has two times defined for the same timestep
Charles Seman
Charles.Seman at noaa.gov
Tue Jun 28 15:08:58 EDT 2011
Roberto,
Try extracting the variable of interest into a separate file (if you
have access to NCO utilities, use "ncks")...
I hope this helps,
Chuck
Roberto Mera wrote:
> Hi. I'm trying to map variables from a netcdf file that has two separate
> defined times for the exact same timestep (1 month). Using sdfopen
> displays only two of the variables where there are 22. Using a ctl file
> it maps out a constant value 0. I've isolated the problem as follows:
> there is a time0 and time1 defined in the netcdf and two of the
> variables have the former as its time but the rest correspond to the
> latter. Below is the ncdump of the file. I'm using v2.0.a9.oga.1 on a
> unix platform. Please advice.
>
> netcdf zzzrlargescalenov98.nc
> {
> dimensions:
> time0 = UNLIMITED ; // (1 currently)
> time1 = 1 ;
> z0 = 1 ;
> z1 = 1 ;
> z2 = 1 ;
> z3 = 1 ;
> z4 = 3 ;
> z5 = 1 ;
> z6 = 1 ;
> latitude0 = 145 ;
> longitude0 = 192 ;
> latitude1 = 144 ;
> longitude1 = 192 ;
> variables:
> float time0(time0) ;
> time0:standard_name = "time" ;
> time0:axis = "T" ;
> time0:calendar = "360_day" ;
> time0:units = "days since 1959-12-01 00:00:00" ;
> time0:meaning_period = "720 hours" ;
> time0:meaning_sampling_frequency = "3 hours" ;
> float time1(time1) ;
> time1:standard_name = "time" ;
> time1:axis = "T" ;
> time1:calendar = "360_day" ;
> time1:units = "days since 1959-12-01 00:00:00" ;
> time1:meaning_period = "720 hours" ;
> time1:meaning_sampling_frequency = "1 hours" ;
> float z0(z0) ;
> z0:standard_name = "height" ;
> z0:units = "m" ;
> z0:direction = "up" ;
> float z1(z1) ;
> float z2(z2) ;
> z2:standard_name = "atmosphere_hybrid_sigma_pressure_coordinate" ;
> z2:direction = "down" ;
> float z3(z3) ;
> z3:standard_name = "height" ;
> z3:units = "m" ;
> z3:direction = "up" ;
> float z4(z4) ;
> z4:standard_name = "air_pressure" ;
> z4:units = "hPa" ;
> z4:direction = "down" ;
> float z5(z5) ;
> z5:standard_name = "air_pressure" ;
> z5:units = "hPa" ;
> z5:direction = "down" ;
> float z6(z6) ;
> z6:standard_name = "height" ;
> z6:units = "m" ;
> z6:direction = "up" ;
> float latitude0(latitude0) ;
> latitude0:standard_name = "latitude" ;
> latitude0:units = "degrees_north" ;
> latitude0:axis = "Y" ;
> float longitude0(longitude0) ;
> longitude0:standard_name = "longitude" ;
> longitude0:units = "degrees_east" ;
> longitude0:axis = "X" ;
> float latitude1(latitude1) ;
> latitude1:standard_name = "latitude" ;
> latitude1:units = "degrees_north" ;
> latitude1:axis = "Y" ;
> float longitude1(longitude1) ;
> longitude1:standard_name = "longitude" ;
> longitude1:units = "degrees_east" ;
> longitude1:axis = "X" ;
> float field186(time0, z0, latitude0, longitude0) ;
> field186:_FillValue = -1.073742e+09f ;
> field186:stash_item = "201" ;
> field186:stash_section = "1" ;
> field186:field_code = "186" ;
> field186:standard_name = "surface_net_downward_shortwave_flux" ;
> field186:long_name = "NET DOWN SURFACE SW FLUX: SW TS ONLY" ;
> field186:units = "W m-2" ;
> field186:cell_method = "time: mean " ;
> float field201(time0, z1, latitude0, longitude0) ;
> field201:_FillValue = -1.073742e+09f ;
> field201:stash_item = "208" ;
> field201:stash_section = "1" ;
> field201:field_code = "201" ;
> field201:standard_name = "toa_outgoing_shortwave_flux" ;
> field201:long_name = "OUTGOING SW RAD FLUX (TOA)" ;
> field201:units = "W m-2" ;
> field201:cell_method = "time: mean " ;
> float field207(time0, z1, latitude0, longitude0) ;
> field207:_FillValue = -1.073742e+09f ;
> field207:stash_item = "209" ;
> field207:stash_section = "1" ;
> field207:field_code = "207" ;
> field207:standard_name =
> "toa_outgoing_shortwave_flux_assuming_clear_sky" ;
> field207:long_name = "CLEAR-SKY (II) UPWARD SW FLUX (TOA)" ;
> field207:units = "W m-2" ;
> field207:cell_method = "time: mean " ;
> float field187(time0, z0, latitude0, longitude0) ;
> field187:_FillValue = -1.073742e+09f ;
> field187:stash_item = "201" ;
> field187:stash_section = "2" ;
> field187:field_code = "187" ;
> field187:standard_name = "surface_net_downward_longwave_flux" ;
> field187:long_name = "NET DOWN SURFACE LW RAD FLUX" ;
> field187:units = "W m-2" ;
> field187:cell_method = "time: mean " ;
> float field206(time0, z1, latitude0, longitude0) ;
> field206:_FillValue = -1.073742e+09f ;
> field206:stash_item = "205" ;
> field206:stash_section = "2" ;
> field206:field_code = "206" ;
> field206:standard_name = "toa_net_upward_longwave_flux" ;
> field206:long_name = "OUTGOING LW RAD FLUX (TOA)" ;
> field206:units = "W m-2" ;
> field206:cell_method = "time: mean " ;
> float field210(time0, z1, latitude0, longitude0) ;
> field210:_FillValue = -1.073742e+09f ;
> field210:stash_item = "206" ;
> field210:stash_section = "2" ;
> field210:field_code = "210" ;
> field210:standard_name =
> "toa_net_upward_longwave_flux_assuming_clear_sky" ;
> field210:long_name = "CLEAR-SKY (II) UPWARD LW FLUX (TOA)" ;
> field210:units = "W m-2" ;
> field210:cell_method = "time: mean " ;
> float field178(time1, z2, latitude0, longitude0) ;
> field178:_FillValue = -1.073742e+09f ;
> field178:stash_item = "217" ;
> field178:stash_section = "3" ;
> field178:field_code = "178" ;
> field178:standard_name = "surface_upward_sensible_heat_flux" ;
> field178:long_name = "SURFACE B.LAYER HEAT FLUXES W/M2" ;
> field178:units = "W m-2" ;
> field178:cell_method = "time: mean " ;
> float field56(time1, z3, latitude1, longitude1) ;
> field56:_FillValue = -1.073742e+09f ;
> field56:stash_item = "225" ;
> field56:stash_section = "3" ;
> field56:field_code = "56" ;
> field56:standard_name = "eastward_wind" ;
> field56:long_name = "10 METRE WIND U-COMP" ;
> field56:units = "m s-1" ;
> field56:cell_method = "time: mean " ;
> float field57(time1, z3, latitude1, longitude1) ;
> field57:_FillValue = -1.073742e+09f ;
> field57:stash_item = "226" ;
> field57:stash_section = "3" ;
> field57:field_code = "57" ;
> field57:standard_name = "northward_wind" ;
> field57:long_name = "10 METRE WIND V-COMP" ;
> field57:units = "m s-1" ;
> field57:cell_method = "time: mean " ;
> float field180(time1, z0, latitude0, longitude0) ;
> field180:_FillValue = -1.073742e+09f ;
> field180:stash_item = "234" ;
> field180:stash_section = "3" ;
> field180:field_code = "180" ;
> field180:standard_name = "surface_upward_latent_heat_flux" ;
> field180:long_name = "SURFACE LATENT HEAT FLUX W/M2" ;
> field180:units = "W m-2" ;
> field180:cell_method = "time: mean " ;
> float field16(time1, z3, latitude0, longitude0) ;
> field16:_FillValue = -1.073742e+09f ;
> field16:stash_item = "236" ;
> field16:stash_section = "3" ;
> field16:field_code = "16" ;
> field16:standard_name = "air_temperature" ;
> field16:long_name = "TEMPERATURE AT 1.5M" ;
> field16:units = "K" ;
> field16:cell_method = "time: mean " ;
> float field88(time1, z3, latitude0, longitude0) ;
> field88:_FillValue = -1.073742e+09f ;
> field88:stash_item = "245" ;
> field88:stash_section = "3" ;
> field88:field_code = "88" ;
> field88:standard_name = "relative_humidity" ;
> field88:long_name = "RELATIVE HUMIDITY AT 1.5M" ;
> field88:units = "1" ;
> field88:cell_method = "time: mean " ;
> float field17(time1, z3, latitude0, longitude0) ;
> field17:_FillValue = -1.073742e+09f ;
> field17:stash_item = "250" ;
> field17:stash_section = "3" ;
> field17:field_code = "17" ;
> field17:standard_name = "dew_point_temperature" ;
> field17:long_name = "DEWPOINT AT 1.5M" ;
> field17:units = "K" ;
> field17:cell_method = "time: mean " ;
> float field90(time1, z0, latitude0, longitude0) ;
> field90:_FillValue = -1.073742e+09f ;
> field90:stash_item = "216" ;
> field90:stash_section = "5" ;
> field90:field_code = "90" ;
> field90:standard_name = "precipitation_flux" ;
> field90:long_name = "TOTAL PRECIPITATION RATE KG/M2/S" ;
> field90:units = "kg m-2 s-1" ;
> field90:cell_method = "time: mean " ;
> float field106(time1, z0, latitude0, longitude0) ;
> field106:_FillValue = -1.073742e+09f ;
> field106:stash_item = "208" ;
> field106:stash_section = "8" ;
> field106:field_code = "106" ;
> field106:standard_name = "liquid_water_content_of_soil_layer" ;
> field106:long_name = "SOIL MOISTURE CONTENT" ;
> field106:units = "kg m-2" ;
> field106:cell_method = "time: mean " ;
> float field56_1(time1, z4, latitude1, longitude1) ;
> field56_1:_FillValue = -1.073742e+09f ;
> field56_1:stash_item = "201" ;
> field56_1:stash_section = "15" ;
> field56_1:field_code = "56" ;
> field56_1:standard_name = "eastward_wind" ;
> field56_1:long_name = "U COMPNT OF WIND ON PRESSURE LEVELS" ;
> field56_1:units = "m s-1" ;
> field56_1:cell_method = "time: mean " ;
> float field57_1(time1, z4, latitude1, longitude1) ;
> field57_1:_FillValue = -1.073742e+09f ;
> field57_1:stash_item = "202" ;
> field57_1:stash_section = "15" ;
> field57_1:field_code = "57" ;
> field57_1:standard_name = "northward_wind" ;
> field57_1:long_name = "V COMPNT OF WIND ON PRESSURE LEVELS" ;
> field57_1:units = "m s-1" ;
> field57_1:cell_method = "time: mean " ;
> float field1(time1, z5, latitude0, longitude0) ;
> field1:_FillValue = -1.073742e+09f ;
> field1:stash_item = "202" ;
> field1:stash_section = "16" ;
> field1:field_code = "1" ;
> field1:standard_name = "geopotential_height" ;
> field1:long_name = "GEOPOTENTIAL HEIGHT: PRESSURE LEVELS" ;
> field1:units = "m" ;
> field1:cell_method = "time: mean " ;
> float field16_1(time1, z5, latitude0, longitude0) ;
> field16_1:_FillValue = -1.073742e+09f ;
> field16_1:stash_item = "203" ;
> field16_1:stash_section = "16" ;
> field16_1:field_code = "16" ;
> field16_1:standard_name = "air_temperature_at_pressure_level" ;
> field16_1:long_name = "TEMPERATURE ON PRESSURE LEVELS" ;
> field16_1:units = "K" ;
> field16_1:cell_method = "time: mean " ;
> float field88_1(time1, z5, latitude0, longitude0) ;
> field88_1:_FillValue = -1.073742e+09f ;
> field88_1:stash_item = "204" ;
> field88_1:stash_section = "16" ;
> field88_1:field_code = "88" ;
> field88_1:standard_name = "relative_humidity_at_pressure_level" ;
> field88_1:long_name = "RELATIVE HUMIDITY ON PRESSURE LEVELS" ;
> field88_1:units = "1" ;
> field88_1:cell_method = "time: mean " ;
> float field8(time1, z6, latitude0, longitude0) ;
> field8:_FillValue = -1.073742e+09f ;
> field8:stash_item = "222" ;
> field8:stash_section = "16" ;
> field8:field_code = "8" ;
> field8:standard_name = "air_pressure_at_sea_level" ;
> field8:long_name = "PRESSURE AT MEAN SEA LEVEL" ;
> field8:units = "Pa" ;
> field8:cell_method = "time: mean " ;
> float field16_2(time1, z0, latitude0, longitude0) ;
> field16_2:_FillValue = -1.073742e+09f ;
> field16_2:stash_item = "24" ;
> field16_2:stash_section = "0" ;
> field16_2:field_code = "16" ;
> field16_2:standard_name = "surface_temperature" ;
> field16_2:long_name = "SURFACE TEMPERATURE AFTER TIMESTEP" ;
> field16_2:units = "K" ;
> field16_2:cell_method = "time: mean " ;
>
> // global attributes:
> :Conventions = "CF-1.3" ;
> :alpham = 0.5f ;
> }
>
> Appending that, here is the ctl file:
>
> DSET ^zzzrlargescalenov98.nc
> dtype netcdf
> TITLE Pacific northwest
> UNDEF -99999
> xdef 192 linear 0 1.875
> ydef 145 linear -90 1.25
> ZDEF 1 LINEAR 1 1
> TDEF 1 LINEAR 0Z01OCT2006 1MO
> VARS 3
> field186=>field186 1 T,Z,Y,X surface_downwelling_shortwave_flux (W m-2)
> field201=>field201 1 T,Z,Y,X precipitation_flux (kg/m2/s)
> field16_2=>field16_2 1 T,Z,Y,X surface_temperature (K)
> ENDVARS
>
> -Robert
>
>
>
> _______________________________________________
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> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
--
Please note that Charles.Seman at noaa.gov should be considered my NOAA
email address, not cjs at gfdl.noaa.gov.
********************************************************************
Charles Seman Charles.Seman at noaa.gov
U.S. Department of Commerce / NOAA / OAR
Geophysical Fluid Dynamics Laboratory voice: (609) 452-6547
201 Forrestal Road fax: (609) 987-5063
Princeton, NJ 08540-6649 http://www.gfdl.noaa.gov/~cjs/
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