The USA National
Phenology Network monitors the status of spring in the form of first - leaf and first - bloom indexes.
For this work, the ITC researchers worked with the USA National
Phenology Network (USANPN) and earlier this year they published a quality - checked phenological dataset in Scientific Data.
«What's happening is that the Earth is warming,» said Jake Weltzin, director of the National
Phenology Network, a federal program that tracks changes in seasonal patterns.
Not exact matches
«Novel data sources from the weather surveillance radar
network and the eBird citizen science database enable development of a migration
phenology index that can be used to answer this question in future studies.»