For every 10 degrees north from the equator you move, spring arrives about four days earlier than it did a decade ago, according to researchers from Penn State, U.C. Davis and the University of Minnesota Duluth. This northward increase in the rate of springtime advance is roughly three times greater than what previous studies indicated.

Michael Mann, distinguished professor of atmospheric science and director of the Earth System Science Center, Penn State, will receive the 2018 American Association for the Advancement of Science Public Engagement with Science Award during the annual meeting in Austin, Texas, from Feb. 15 to 19.

Unprecedented summer warmth and flooding, forest fires, drought and torrential rain — extreme weather events are occurring more and more often, but now an international team of climate scientists has found a connection between many extreme weather events and the impact climate change is having on the jet stream.

One size does not always fit all, especially when it comes to global climate models, according to Penn State climate researchers.

Record-setting temperatures over the past century and a half are extremely unlikely to have occurred without human-caused climate change, but the odds of that happening are not quite as low as previously reported, according to an international team of meteorologists.

Seven Penn State faculty members have been named Fellows of the American Association for the Advancement of Science, the organization announced November 23, 2015.

Whether or not a coastal city floods during a hurricane depends on the storm, tide and sea level, and now a team of climate scientists show that the risk of New York City flooding has increased dramatically during the industrial era as a result of human-caused climate change.