Skip to main content



Daymet V3.0 2012 Average Daily Maximum Temperature for North America, Hawaii, and Puerto Rico

Daymet Version 3 Data Now Available

The new version of Daymet data includes an expanded North American spatial extent including Canada, the United States (including Alaska), Mexico, Puerto Rico, and Hawaii.

Lake Claire (Canada) as a difference map from 1991 to 2011. Water for 1991-2011 is shown in blue, green 2011, brown 2001, and red is water in 1991.

Surface Water Extent in the North American Arctic

A new ABoVE dataset provides a map of surface water in the Boreal and Tundra regions of North America in 1991, 2001, and 2011.

CLM4.5 modeled annual land-atmosphere CO2 flux in Alaska under future warming and permafrost thaw scenarios (from Parazoo et al., 2016).

Modeled CO2 flux for Alaska

Satellite and airborne observations of CO2 flux were used to simulate present and future CO2 flux.

The ORNL DAAC mission is to assemble, distribute, and provide data services for a comprehensive archive of terrestrial biogeochemistry and ecological dynamics observations and models to facilitate research, education, and decision-making in support of NASA’s Earth science. Read more about the ORNL DAAC.