Northern_Forest_Trend_in_Photosynthetic_Activity.gif

Summary

Description	Change in Photosynthetic Activity in Northern Forests 1982-2003
Date	4 January 2008
Source	http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17252 Archive: https://web.archive.org/web/20090202145056/http://earthobservatory.nasa.gov/IOTD/view.php?id=6487
Author	NASA Earth Observatory
Other versions	old version:

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