Additional information about this dataset may be found in:


NCAR Tech Note TN-373, "Global Analyses from ECMWF and Atlas of 1000 to 10 mb
	Circulation Statistics", Trenberth

NCAR Tech Note TN-301, "Intercomparison of NMC and ECMWF Global Analyses: 1980
	- 1986", Trenberth and Olson