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Hi Zoujun, Yes, you can use those datasets. Some of them are on a curvilinear grid, and I presume that's what you're asking about. For all the details, look at the section on Curvilinear data in the Ferret Users Guide http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/working-with-special-data-sets/CURVILINEAR-COORDINATE-DATA and if you are interested in serving data on curvilinear grids in LAS, the documentation for configuring that is here http://ferret.pmel.noaa.gov/LAS/documentation/installer-documentation/adding-curvilinear-data/ For instance, from the Ferret command line, yes? use "http://hycom.coaps.fsu.edu/thredds/dodsC/glb_analysis" Notice that in the SHADE command I've used strides to decimate the data on this very fine grid. GO LAND does work, after the longitude and latitude plot axes have been set up by running the curvilinear version of the plot command (shade, fill, contour, and vector have curvilinear forms). In LAS we are still grappling a bit with how to deal with the volume of data in this high-resolution grid, but there is a link on the page you mention, http://hycom.rsmas.miami.edu/dataserver/ to a LAS installed there; you can see it in action. Ansley Zuojun Yu wrote: If you never used HYCOM products from |