USA NPN National Phenology Network

Taking the Pulse of Our Planet

You are here

The USA-NPN, phenology, and our partners are often in the news. Follow some recent stories below.

Image credit:
Sara N. Schaffer


  • National Phenology Database Reaches 10 million record milestone
    Monday, April 24, 2017

    As of April 24, 2017, the National Phenology Database has reached 10 million records! Each record is a response to a question about phenology activity for a particular plant or animal species on a unique day and time, by a unique observer.

    Read more about this milestone in this story in UA News.  

    Find out what 10 million records means: 

  • USGS Top Story: Just HOW EARLY is spring arriving in your neighborhood?
    Thursday, February 23, 2017

    This USGS Top Story highlights why we should care about an early spring, how these predictions are calculated, and what you can do to help improve these models! 

  • Spring is arriving early in the Southeastern US
    Thursday, February 2, 2017

    According to the USA-NPN's Spring Indices, spring is arriving 20 days earlier than a long-term average (1981-2010) in much of the Southeastern US. The Extended Spring Indices are models that predict the onset of early spring plants across the United States. You can see these maps as well as maps of Accumulated Growing Degree Days (AGDD) on the USA-NPN's Phenology Visualization Tool. You can also find out how these predictions compare to those of weather forecasting groundhog Punxsutawney Phil in article in the Washington Post and

  • USA-NPN Executive Director Jake Weltzin presents at National Academies of Sciences Meeting
    Wednesday, November 30, 2016

    USA-NPN Executive Director Jake Weltzin presented at the National Academies of Sciences, Engineering and Medicine  Meeting that took place in Irvine, CA from November 29-30, 2016. Jake showcased the USA-NPN's suite of phenology maps that were made available in Spring of 2016. 

    Thursday, October 6, 2016

    The USA-NPN is part of a new study published in Ecosphere that shows spring is advancing in 75% of 276 National Parks studied. This shift is "extreme" in half of the Parks. The study used the Spring Indices, an index of spring developed by the USA-NPN and its partners to compare the recent timing of spring onset (past 10-30 years) to a historical range of variability (1901-2012). Learn more about what this study means for National Parks. 

    Secretary Jewell announced the study on October 6th, 2016 at Shenandoah National Park.

    An Arizona-focused article appeared in UANews on October 6, 2016, discussing what the study might mean for Arizona Parks. 

    Visit the National Park Service landing page for more information, and read the Resource Brief put out by the National Park Service. Park-specific briefs will be forthcoming. 

    The study is also highlighted in these popular media outlets:

    National Geographic
    Science Daily
    Arizona Public Media