[thredds] THREDDS aggregation configuration

• To: "thredds@xxxxxxxxxxxxxxxx" <thredds@xxxxxxxxxxxxxxxx>
• Subject: [thredds] THREDDS aggregation configuration
• From: "Sumagaysay, Rosanna M (3880-Affiliate)" <Rosanna.M.Sumagaysay@xxxxxxxxxxxx>
• Date: Mon, 2 Apr 2012 14:01:15 -0700

Hello,

I have a THREDDs aggregation configuration as the following where I used the 
'dateFormatMark' variable to determine 'time' without having to uncompress/open 
every single 1KM global daily granule (eg. ~3Gbytes uncompressed each granule):

   <dataset name="2010 JPL_OUROCEAN-L4UHfnd-GLOB-G1SST Time Aggregation" 
ID="2010_JPL_OUROCEAN-LUHfnd-GLOB-G1SST" 
urlPath="sea_surface_temperature/2010_JPL_OUROCEAN-L4UHfnd-GLOB-G1SST_v01-fv01_0-G1SST.nc">
      <netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";>
         <aggregation dimName="time" type="joinExisting">
            <scan 
location="/usr/ftp/allData/ghrsst/data/L4/GLOB/JPL_OUROCEAN/G1SST/2010/" 
regExp=".*JPL_OUROCEAN-L4UHfnd-GLOB-v01-fv01_0-G1SST.nc.bz2$" 
dateFormatMark="#yyyyMMdd" />
         </aggregation>
      </netcdf>
      <metadata inherited="true">
        <serviceName>all</serviceName>
        <dataType>Grid</dataType>
        <dataFormat>NetCDF</dataFormat>
      <documentation 
xlink:href="http://podaac.jpl.nasa.gov/dataset/JPL_OUROCEAN-L4UHfnd-GLOB-G1SST"; 
xlink:title="GHRSST Level 4 G1SST Global Foundation SST 
Documentation"></documentation>
      </metadata>
   </dataset>


Here's the URL:
http://thredds.jpl.nasa.gov/thredds/dodsC/sea_surface_temperature/2010_JPL_OUROCEAN-L4UHfnd-GLOB-G1SST_v01-fv01_0-G1SST.nc.html

The above configuration resulted to an Array of Strings type for 'time' which 
is not CF compliant.

Question:
1) How can update my configuration of the aggregation via NCML so that it 
returns a CF compliant variable type 'time'.   and will work when I try to add 
the Virtual NetCDF file with  'addXML.sh' in our Live Access Server (LAS).
Here's the error I get with the current THREDDS configuration.
[rroot@seastore /tmp]# /usr/depot/redhatel5/las/7.3/bin/addXML.sh -n 
http://thredds.jpl.nasa.gov/thredds/dodsC/sea_surface_temperature/2010_JPL_OUROCEAN-L4UHfnd-GLOB-G1SST_v01-fv01_0-G1SST.nc
ERROR addXML - Unable to open dataset at 
http://thredds.jpl.nasa.gov/thredds/dodsC/sea_surface_temperature/2010_JPL_OUROCEAN-L4UHfnd-GLOB-G1SST_v01-fv01_0-G1SST.nc
ERROR addXML -
ERROR addXML - No grids were found in the input data sets.
ERROR addXML - Check to see if the OPeNDAP servers being referenced are running.
ERROR addXML - Verify that the netCDF files referenced are COARDS or CF 
compliant.
ERROR addXML -

2) Do I also need to include in the NCML the following attribute to force CF 
compliance?
<attribute name="Convention" value="CF-1.0" />

Thanks so much,
Rosanna.
------------------------------------------------------------
Rosanna Sumagaysay-Aouda
Physical Oceanography DAAC
http://podaac.jpl.nasa.gov/
626.744.5565 (work)  818.497.5508 (cell)
Mail Stop:  Raytheon-299
Rosanna.M.Sumagaysay@xxxxxxxxxxxx
------------------------------------------------------------
"You can't depend on your eyes when your imagination is out of focus." - Mark 
Twain