Datasets	Areal Coverage	Grid Size	Time Step	Time Coverage	Levels
CPC .25x.25 Daily US Unified Precipitation	U.S.	.25°x.25°	Daily	1948-2006	None
Livneh daily CONUS near-surface gridded meteorological and derived hydrometeorological data.	CONUS	0.06°x0.06°	Daily, Monthly	1915-2011	None
NCEP/NCAR Reanalysis	Global	2.5°x2.5°, T42 Gaussian, T62 spectral	4X Daily, Daily, Monthly	1948-present	17 pressure levels, 28 spectral
NCEP/NCAR Reanalysis Products Derived at NOAA/PSL	Global	2.5°x2.5°, T62 Gaussian	Daily, Monthly	1948-present	17 pressure levels, 28 spectral
NCEP/DOE Reanalysis II	Global	2.5°x2.5°	4X Daily, Daily, Monthly	1979-Dec 2012	17 Pressure levels
NOAA's Outgoing Longwave Radiation–Daily Climate Data Record (OLR–Daily CDR)	Global	1.0°x1.0°	Daily	1979-near present	None
NOAA High-resolution Blended Analysis of Daily SST and Ice.	Global	.25°x.25°	Daily	1981-present	None
NOAA Highly Reflective Clouds	Tropics	1.0°x1.0°	Daily, Monthly	1971-1988	None
PSL South America Daily Gridded Precipitation	South America	2.5°x2.5°, 1.0°x1.0°	Daily	1940-near present	None
North American Regional Reanalysis (NARR)	Northern Hemisphere	32km grids	8X Daily, Daily, Monthly	1979-Dec 2012	28 Pressure
NOAA-CIRES 20th Century Reanalysis (V2)	Global	2.5°x2.5°	4X Daily	1871-2012	24 pressure levels
NOAA-CIRES 20th Century Reanalysis (V2c)	Global	2.5°x2.5°	4X Daily	1851-2014	24 pressure levels
NOAA-CIRES-DOE 20th Century Reanalysis V3	Global	1.0°x1.0°	8X Daily	1836-2015	24 pressure levels
Uninterpolated OLR	Global	2.5°x2.5°	Daily	1991-present	None
CPC Global Precipitation	Global	0.5°x0.5°	Daily	1979-present	None
CPC Global Temperature	Global	0.5°x0.5°	Daily	1979-present	None