Fleet Numerical Oceanographic Center in Monterey California prepares
many analyses, from which we receive this surface subset on a
63-by-63 grid. It includes sea surface temperature, air surface
temperature, surface vapor pressure, 19.5 meter surface winds, and
sea level pressure.
Unless you have a special interest in this dataset, DSS recommends
that you use one of our reanalysis datasets, such as ds090.0
[http://rda.ucar.edu/datasets/ds090.0/]. That's because those are
based on a more complete collection of observations, improved
analysis methods, and are provided in a common modern format (GRIB).