Contains a 5km X 5km sub-sampling of the data from the MYD021KM file, along
with the associated metadata. Except for the different sizes of the arrays, it
has the same structure as the parent file, including dimension names that don't
match the new, shorter sizes of those dimensions. The HDF-EOS dimension map has
been adjusted to reflect the fact that data fields and the geolocation fields
are at exactly the same resolution.
The shortname for this product is MYD02SSH
More data set information: http://mcst.gsfc.nasa.gov/