U.S. Navy FNOC Northern Hemisphere Surface Analyses, daily September 1969 to December 1993

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 [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).