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Rich, John Caron is about to leave on vacation so I will send what he was going to point out. The files you sent me omit an attribute needed for two-dimensional latitude, longitude coordinate variables. In the CF Metadata Conventions document, http://www.cgd.ucar.edu/cms/eaton/cf-metadata/CF-current.html#grid_ex2, an example is shown with the two-dimensional coordinates "lat" and "lon." Note the attribute for parameter T, 'T:coordinates = "lon lat" ;'. In your file you need h:coordinates = "latitude, longitude"; for any parameter h. Without the "coordinates" attribute the file is not CF compliant and a netCDF file reader does not find the coordinate system. The CF checker must miss checking for this attribute. The IDV cannot yet display 3D data with ocean s coordinate, but it should be able to display your 2D file with the coordinates attribute added. John has completed his part of the work on the s and hybrid sigmas coordinates, finding the z coordinate height values from s or hybrid sigma values in the netCDf file, and now I will be working on using them in the IDV data model. Since each z value depends on lat, lon, and time this is not a simple addition and I cannot say when it will be done. At the earliest this will be in the next IDV release. No release date has been set. (We have had 5 releases so far this year.) Stu > > Thanks for confirming that IDV cannot currently read > 2D lat/lon. I wasn't sure whether it was my problem or > not. > > But thanks even more for confirming that you are working > on including the capability! > > -Rich -- **************************************************************************** Unidata User Support UCAR Unidata Program 303 497 8643 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata WWW Service http://my.unidata.ucar.edu/content/support ****************************************************************************