News From the Field
Earth's Seasons Now Arrive 2 Days Earlier, UC Berkeley, Harvard Researchers Report
January 21, 2009
Biologists have long noticed that global warming is causing springtime flowering and ice melting to arrive earlier, but a new study shows that the seasonal cycle has also shifted, causing summer's peak temperature and winter's lowest temperature on land to arrive nearly two days earlier than was true 50 years ago. The cause is unknown, but University of California, Berkeley and Harvard University researchers suspect it involves changing wind patterns over land and ocean, or drier soils.
University of California, Berkeley
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