Hi Brian:
We are checking into this.
John
On 11/1/2012 4:47 PM, Brian Schlining wrote:
Hi All,
I'm having an issue opening the file at
http://data.nodc.noaa.gov/opendap/ghrsst/L4/GLOB/JPL_OUROCEAN/G1SST/2010/160/20100609-JPL_OUROCEAN-L4UHfnd-GLOB-v01-fv01_0-G1SST.nc.bz2'
I get very a very different CDL when I open it locally vs when I open it
via OPeNDAP (it's served by Hyrax). Most notably the variable attributes
for lat, lon and time are 'transmorgified' into global attributes when
read via OPeNDAP. Below are the different CDL's. If any knows of a
workaround or has insight into what's going I'd appreciate hearing about
it. Thanks
When I open it with netcdf-java I get the following CDL:
*===== WHAT I GET =====*
netcdf
dods://data.nodc.noaa.gov/opendap/ghrsst/L4/GLOB/JPL_OUROCEAN/G1SST/2010/160/20100609-JPL_OUROCEAN-L4UHfnd-GLOB-v01-fv01_0-G1SST.nc.bz2
{
dimensions:
time = 1;
lat = 16000;
lon = 36000;
variables:
float analysed_sst(time=1, lat=16000, lon=36000);
:_CoordinateAxes = "time lat lon ";
:long_name = "analysed sea surface temperature";
:standard_name = "sea_surface_temperature";
:type = "foundation";
:units = "kelvin";
byte mask(time=1, lat=16000, lon=36000);
:_Unsigned = "true";
:_CoordinateAxes = "time lat lon ";
:long_name = "sea/land/lake/ice field composite mask";
:_FillValue = -128B; // byte
:flag_values = "1b, 2b, 4b, 8b";
:flag_meanings = "sea land lake ice";
:comment = "b0: 1=grid cell is open sea water012b1: 1=land is present in this
grid cell012b2: 1=lake surface is present in this grid cell012b3: 1=sea ice is present in
this grid cell012b4-b7: reserved for future grid mask data";
float analysis_error(time=1, lat=16000, lon=36000);
:_CoordinateAxes = "time lat lon ";
:long_name = "estimated error standard deviation of analysed_sst";
:units = "kelvin";
int time(time=1);
float lat(lat=16000);
float lon(lon=36000);
:time.units = "seconds since 1981-01-01 00:00:00";
:time.long_name = "reference time of sst field";
:time.standard_name = "time";
:time.axis = "T";
:time.calendar = "Gregorian";
:lon.long_name = "longitude";
:lon.standard_name = "longitude";
:lon.axis = "X";
:lon.units = "degrees_east";
:lat.long_name = "latitude";
:lat.standard_name = "latitude";
:lat.axis = "Y";
:lat.units = "degrees_north";
:Conventions = "CF-1.0";
:title = "G1SST, 1km blended SST";
:DSD_entry_id = "JPL_OUROCEAN-L4UHfnd-GLOB-G1SST";
:references = "A Blended Global 1-km Sea Surface Temperature Data Set for Research
and Applications012by Yi Chao, Benyang Tang, Zhijin Li, Peggy Li, Quoc Vu";
:institution = "Jet Propulsion Laboratory, The OurOcean Team";
:contact = "yi.chao@xxxxxxxxxxxx";
:GDS_version_id = "v1.0-rev1.7";
:netcdf_version_id = "3.6.0";
:creation_date = "2010-06-14 UTC";
:product_version = "1.0";
:history = "1km SST blended from 8 satellite observations";
:spatial_resolution = "1 km";
:source_data =
"AMSRE,AVHRR,TMI,MODIS,MODIS,GOES,METOP,MTSAT,SEVIRI,AATSR,in-situ";
:comment = "";
:start_date = "2010-06-14 UTC";
:start_time = "00:00:00 UTC";
:stop_date = "2010-06-10 UTC";
:stop_time = "00:00:00 UTC";
:southernmost_latitude = -80.0f; // float
:northernmost_latitude = 80.0f; // float
:westernmost_longitude = -180.0f; // float
:easternmost_longitude = 180.0f; // float
:file_quality_index = 0; // int
}
*===== WHAT IT SHOULD BE =====*
netcdf
/Users/brian/Downloads/20100609-JPL_OUROCEAN-L4UHfnd-GLOB-v01-fv01_0-G1SST.nc.bz2
{
dimensions:
time = 1;
lon = 36000;
lat = 16000;
variables:
float analysed_sst(time=1, lat=16000, lon=36000);
:long_name = "analysed sea surface temperature";
:standard_name = "sea_surface_temperature";
:type = "foundation";
:units = "kelvin";
byte mask(time=1, lat=16000, lon=36000);
:long_name = "sea/land/lake/ice field composite mask";
:_FillValue = -128B; // byte
:flag_values = "1b, 2b, 4b, 8b";
:flag_meanings = "sea land lake ice";
:comment = "b0: 1=grid cell is open sea water\nb1: 1=land is present in this
grid cell\nb2: 1=lake surface is present in this grid cell\nb3: 1=sea ice is present in
this grid cell\nb4-b7: reserved for future grid mask data";
float analysis_error(time=1, lat=16000, lon=36000);
:long_name = "estimated error standard deviation of analysed_sst";
:units = "kelvin";
int time(time=1);
:units = "seconds since 1981-01-01 00:00:00";
:long_name = "reference time of sst field";
:standard_name = "time";
:axis = "T";
:calendar = "Gregorian";
:_CoordinateAxisType = "Time";
float lon(lon=36000);
:long_name = "longitude";
:standard_name = "longitude";
:axis = "X";
:units = "degrees_east";
:_CoordinateAxisType = "Lon";
float lat(lat=16000);
:long_name = "latitude";
:standard_name = "latitude";
:axis = "Y";
:units = "degrees_north";
:_CoordinateAxisType = "Lat";
:Conventions = "CF-1.0";
:title = "G1SST, 1km blended SST";
:DSD_entry_id = "JPL_OUROCEAN-L4UHfnd-GLOB-G1SST";
:references = "A Blended Global 1-km Sea Surface Temperature Data Set for Research
and Applications\nby Yi Chao, Benyang Tang, Zhijin Li, Peggy Li, Quoc Vu";
:institution = "Jet Propulsion Laboratory, The OurOcean Team";
:contact = "yi.chao@xxxxxxxxxxxx";
:GDS_version_id = "v1.0-rev1.7";
:netcdf_version_id = "3.6.0";
:creation_date = "2010-06-14 UTC";
:product_version = "1.0";
:history = "1km SST blended from 8 satellite observations";
:spatial_resolution = "1 km";
:source_data =
"AMSRE,AVHRR,TMI,MODIS,MODIS,GOES,METOP,MTSAT,SEVIRI,AATSR,in-situ";
:comment = "";
:start_date = "2010-06-14 UTC";
:start_time = "00:00:00 UTC";
:stop_date = "2010-06-10 UTC";
:stop_time = "00:00:00 UTC";
:southernmost_latitude = -80.0f; // float
:northernmost_latitude = 80.0f; // float
:westernmost_longitude = -180.0f; // float
:easternmost_longitude = 180.0f; // float
:file_quality_index = 0; // int
}
--
Brian Schlining
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