The following reanalysis datasets are available through NOMADS:
Climate Forecast System Reanalysis and Reforecast (CFSRR)
CFSRR provides both a global reanalysis (a best estimate of the observed state of the atmosphere) and a global reforecast of past weather down to 0.5 degree horizontal resolution.
North American Regional Reanalysis (NARR)
NARR is a regional reanalysis of North America containing temperatures, winds, moisture, soil data, and dozens of other parameters at 32km horizontal resolution.
Reanalysis-1 / Reanalysis-2
Reanalysis-1 / Reanalysis-2 are two global reanalyses of atmospheric data spanning 1948/1979 to present at a 2.5 degree horizontal resolution.