Data sources:

 - be/be.dat was created for the WRFDA tutorial domain (http://www.mmm.ucar.edu/wrf/users/wrfda/download/testdata.html) using forecasts initialized from 2008-02-03-00z through 2008-02-08-00z. These forecasts can be found at http://www.mmm.ucar.edu/wrf/users/wrfda/download/gen_be_forecasts_200802.tar.gz

 - ob/2008020512/gdas1.t12z* and ob/2008020518/gdas1.t18z* files are from the NOAA NOMADS GDAS archive: http://nomads.ncdc.noaa.gov/cgi-bin/ncdc-ui/define-collection.pl?model_sys=gdas&model_name=gdas&grid_name=999

 - ob/2008020512/obs.2008020512 is a LITTLE_R taken from the NCAR archive hsi:/BRESCH/RT/DATA/200802 (requires NCAR HPSS account). It is actually two files (obs.2008020512 and obs.2008020518) concatenated, since 4DVAR requires data from 12z through 18z.

 - ob/200802051*/obs_gts_2008-02-05_1*:00:00.*DVAR files are created using OBSPROC from WRFDA V3.6.1, with the included "obs.2008020512" file as the input LITTLE_R data, and using the sample obsproc namelists provided in the WRFDA package.

 - ob/2008020518/ob.rain was created by the "precip_converter" tool (http://www.mmm.ucar.edu/wrf/users/wrfda/download/precip_converter.tar.gz) using data from the NCAR CODIAC page (http://data.eol.ucar.edu/codiac/dss/id=21.093) 

 - rc/ files were all created by WPS/real.exe V3.6, with background fields from the GFS FNL analysis: http://rda.ucar.edu/datasets/ds083.2/
