This is the meta data for the data:

{"Conventions" -> "COARDS",
"title" -> "mean daily NMC reanalysis (2010)",
"history" -> "created 2009/12 by Hoop (netCDF2.3)",
"description" -> "Data is from NMC initialized reanalysis
(4x/day). These are the 0.9950 sigma level values.",
"platform" -> "Model",
"references" ->
"http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.\
html"}