USA NPN National Phenology Network

Taking the Pulse of Our Planet

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USA National Phenology Network

The USA-NPN brings together citizen scientists, government agencies, non-profit groups, educators and students of all ages to monitor the impacts of climate change on plants and animals in the United States.


February 4th, 2020

Punxsutawney Phil predicted an early spring this year! Our maps of heat accumulation provide a more scientific look at how much heat has accumulated so far this year, and what's next. Heat accumulation is ahead of schedule in the Southeast, Northeast, and parts of the West, and more typical in Midwest states. Research published in Journal of Geophysical Research by Crimmins and Crimmins last year, as well as NOAA's Climate Prediction Center, predict advanced plant and animal activity in the coming months in the Southeast and Northeast, the less precipitation and warmer temperatures in the Southwest, normal conditions in the Northwest, and below average temperatures and above average precipitation in the Midwest.

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