I am looking for hourly surface wind reanalysis data for the past two years. I am looking at the CFSR/CFSv2 data accessible from UCAR: http://rda.ucar.edu/datasets/ds094.1
The 6-hourly products are "complete" (http://rda.ucar.edu/datasets/ds093.0/), while the hourly dataset (http://rda.ucar.edu/datasets/ds094.1) is "Selected". I take "Selected" to mean a subset of some kind. For those familiar with CFSR, what exactly is selected, and what is not contained in the dataset?
Suggestions on other sources of hourly reanalysis surface wind datasets would be appreciated as well.