I'm using netCDF4-java to read grib1 files.
In one case, a typical RUC file has temperature data in the form VPT
(virtual potential temperature). wgrib can read the file fine, and gives
record indicators like this.
101:29361886:d=09021719:VPTMP:kpds5=189:kpds6=109:kpds7=1:TR=0:P1=9:P2=0:TimeU=1:hybrid
lev 1:9hr fcst:NAve=0
However, netcdf4-java fails, giving the variable name as 'Unknown', and
apparently filling all the variables with 0.
Here's some relevant output from ncfile.toString():
float Unknown(time=1, hybrid=50, y=337, x=451);
:units = "Unknown";
:long_name = "Unknown @ hybrid";
:missing_value = -9999.0f; // float
:grid_mapping = "Lambert_Conformal";
:GRIB_param_name = "Unknown";
:GRIB_center_id = 59; // int
:GRIB_table_id = 2; // int
:GRIB_param_number = 189; // int
:GRIB_param_id = 1, 59, 2, 189; // int
:GRIB_product_definition_type = "Forecast/Uninitialized
Analysis/Image Product";
:GRIB_level_type = 109; // int
Any thoughts on how to solve this problem?
-Bill
--
William R. Moninger http://www-frd.fsl.noaa.gov/~moninger/
NOAA / Earth Systems Research Laboratory / Global Systems Division
325 Broadway, R/GSD1 voice: 303-497-6435
Boulder, CO 80305 fax: 303-497-3329
