Tree line in the northern hemisphere

Feb 10, 2011 (Last modified May 14, 2011)
Description:
Vector line dataset displaying the tree line for the northern hemisphere. This is a companion dataset to the Circum-Arctic Map of Permafrost and Ground Ice Conditions .  
Data Provided By:
National Snow and Ice Data Center, USA
Content date:
not specified
Citation:
Brown, J., O.J. Ferrians, Jr., J.A. Heginbottom, and E.S. Melnikov. 1998, revised February 2001. Circum-arctic map of permafrost and ground ice conditions. Boulder, CO: National Snow and Ice Data Center/World Data Center for Glaciology. Digital media.
Contact Organization:
NSIDC
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Use Constraints:
Creative Commons LicenseThis work is licensed under a Creative Commons Attribution 3.0 License.
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