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USA National Phenology Network
February 23, 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 South and mid-Atlantic. 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. Read the USGS Top Story here.
We are so amazed by your efforts in 2016, and all that we accomplished together! You submitted 2.4 million observation records to Nature's Notebook, increasing the average number of days observed per observer by 32% over 2015. You also submitted a whole lot of observations to six different Nature's Notebook campaigns, which revealed some interesting patterns. Plus, there were multiple research articles published that used your data. Watch the video summary or read the 1-pager.