The USGS used Spring Indices models developed by Distinguished Professor Mark D. Schwartz for their recent article on the early arrival of spring this year, and trends toward very early spring onsets in National Parks. The 鈥渇irst leaf鈥� maps based on the models were presented by Al Roker on the Today Show on March 2, 2017. Mark Schwartz鈥檚 Spring Indices models were also mentioned in recent articles in the Washington Post, Atlantic Magazine, and by Associated Press on climate change and the early onset of spring this year.
, U.S. Geological Survey, February 22, 2017
, Washington Post, February 24, 2017
, U.S. News and World Report (running AP story), February 28, 2017
, the Atlantic, March 1, 2017