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
"; :lon
g_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 s
st 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,T
MI,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
