[idvusers] Geolocation of CF-1.0 files in IDV

• To: <idvusers@xxxxxxxxxxxxxxxx>
• Subject: [idvusers] Geolocation of CF-1.0 files in IDV
• From: "Levy,Ilan [Ontario]" <Ilan.Levy@xxxxxxxx>
• Date: Wed, 18 Feb 2009 10:30:53 -0500

Hi all,
I am trying to display a NetCDF file that is an output of the AURAMS
model. The output was converted from RPN file to NetCDF CF-1.0 format.
 
IDV (2.6u1) puts the domain in the north pole, instead of over Toronto.
Panoply puts the same file in the right location, so I don't think
therfe is something wrong with the file.
I'm not familiar with CF-1.0 convention, but is there something I need
to change in the file (or in IDV) to correct this?
Bellow is the metadata from the file.
 
Thanks,
Ilan Levy,
Environment Canada
 
 
netcdf E:/Data/AURAMS/July04_0020Z_UU_VV.cdf {
 dimensions:
   xc = 157;
   yc = 211;
   level = 20;
   time = UNLIMITED;   // (1 currently)
 variables:
   char polar_stereographic;
     :grid_mapping_name = "polar_stereographic";
     :straight_vertical_longitude_from_pole = -110.0f; // float
     :standard_parallel = 60.0f; // float
     :false_easting = -2264501.0f; // float
     :false_northing = 4844997.5f; // float
     :latitude_of_projection_origin = 90.0f; // float
     :resolution_at_standard_parallel = 2500.0f; // float
     :_CoordinateTransformType = "Projection";
     :_CoordinateAxisTypes = "GeoX GeoY";
   double uwnd(time=1, level=20, yc=211, xc=157);
     :units = "m s-1";
     :long_name = "True wind in x-dir";
     :standard_name = "eastward_wind";
     :actual_range = -15.985584259033203, 30.085575103759766; // double
     :coordinates = "lon lat";
     :grid_mapping = "polar_stereographic";
     :level_desc = "Height";
     :grid_desc = "polar_stereographic";
   double vwnd(time=1, level=20, yc=211, xc=157);
     :units = "m s-1";
     :long_name = "True wind in y-dir";
     :standard_name = "northward_wind";
     :actual_range = -8.024663925170898, 30.0851993560791; // double
     :coordinates = "lon lat";
     :grid_mapping = "polar_stereographic";
     :level_desc = "Height";
     :grid_desc = "polar_stereographic";
   float xc(xc=157);
     :units = "m";
     :long_name = "x-coordinate of polar-stereographic projection";
     :standard_name = "projection_x_coordinate";
     :axis = "X";
     :coordinate_defines = "point";
     :actual_range = 0.0, 390000.0; // double
     :_CoordinateAxisType = "GeoX";
   float yc(yc=211);
     :units = "m";
     :long_name = "y-coordinate of polar-stereographic projection";
     :standard_name = "projection_y_coordinate";
     :axis = "Y";
     :coordinate_defines = "point";
     :actual_range = 0.0, 525000.0; // double
     :_CoordinateAxisType = "GeoY";
   float level(level=20);
     :units = "m";
     :long_name = "height";
     :standard_name = "height";
     :axis = "Z";
     :positive = "up";
     :coordinate_defines = "point";
     :actual_range = 0.0, 5125.0; // double
     :_CoordinateAxisType = "Height";
     :_CoordinateZisPositive = "up";
   double time(time=1);
     :long_name = "time";
     :standard_name = "time";
     :axis = "T";
     :units = "hours since 2007-06-17 00:00:0.0";
     :delta_t = "0000-00-00 00:00:00";
     :coordinate_defines = "point";
     :actual_range = 408.0, 408.0; // double
     :_CoordinateAxisType = "Time";
   float lon(yc=211, xc=157);
     :units = "degrees_east";
     :long_name = "longitude";
     :standard_name = "longitude";
     :actual_range = 275.0508346557617, 281.5693588256836; // double
     :_CoordinateAxisType = "Lon";
   float lat(yc=211, xc=157);
     :units = "degrees_north";
     :long_name = "latitude";
     :standard_name = "latitude";
     :actual_range = 40.151729583740234, 45.38578414916992; // double
     :_CoordinateAxisType = "Lat";
 
 :Conventions = "CF-1.0";
 :title = "AURV1.32     July04_0020Z_UU_VV.fst";
}

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  • Re: [idvusers] Geolocation of CF-1.0 files in IDV
    • From: Don Murray