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Federal
NOAA/WDS Paleoclimatology - The International Tree-Ring Data Bank (ITRDB) Revisited
National Oceanic and Atmospheric Administration, Department of Commerce —
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for... -
Federal
NACP Forest Age Maps at 1-km Resolution for Canada (2004) and the U.S.A. (2006)
National Aeronautics and Space Administration —
This data set provides forest age map products at 1-km resolution for Canada and the United States (U.S.A.). These continental forest age maps were compiled from...