USA NPN National Phenology Network

Taking the Pulse of Our Planet

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Status of Spring

Status of Spring

Spring leaf-out has arrived in the Continental US and most of Alaska. Spring was 1-3 weeks late in the SE, northern Great Plains, MW, and NE and 1-3 weeks early across the central Great Plains, Ohio Valley and mid-Atlantic. The west is a patchwork of early and late arrival.  

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The USA National Phenology Network

The USA National Phenology Network

We bring 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. Learn more about the USA-NPN

What is Phenology?

What is Phenology?

Phenology refers to key seasonal changes in plants and animals from year to year—such as flowering, emergence of insects and migration of birds—especially their timing and relationship with weather and climate.

Learn more about phenology

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USA National Phenology Network


AGU Fall meeting 2018

Join us at AGU for a special session hosted by USA-NPN

June 21, 2018

Submit an abstract to the session The USA National Phenology Network: Advancing the Science of Phenology in the Past, Present and Future and highlight your work that utilizes USA-NPN data, tools, or resources. Abstracts are due August 1st.

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Celebrating 10 Years of the USA-NPN

Education Coordinator LoriAnne Barnett with Certified LPL Hank Verbais

This month we highlight our Local Phenology Leaders! While many people participate in Nature's Notebook as individuals, increasingly more observers participate as part of a group. These groups are led by Local Phenology Leaders (LPLs) who offer training, support, and social events to keep their members engaged and submitting high-quality data. Over 100 LPLs have taken our Certification Course where they learn skills in program planning, volunteer recruitment and retention, and community collaboration. 

Learn more »