12 Mar 2012:
Ice on U.S. Great Lakes
Has Decreased by 71 Percent Since 1973
The average amount of ice covering the U.S. Great Lakes has dropped by 71 percent over the past 40 winters
, with ice coverage on the largest of the lakes, Superior, dropping by 79 percent, according to a
report from the American Meteorological Society. Researchers used satellite photographs and Coast Guard reports to document the decline of ice coverage in the Great Lakes from 1973 to 2010. The lake with the most precipitous loss of ice has been Lake Ontario, where ice coverage has fallen by 88 percent, according to the report, published in the Journal of Climate
. The report does not include the current winter, which has been extraordinarily mild, resulting in only five percent of the Great Lakes’ surface being covered in ice. Lead researcher Jia Wang of the National Oceanic and Atmospheric Administration said the large loss of ice could speed the evaporation of the lakes, accelerate shoreline erosion because of the increase in open water, and promote more algal blooms.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
e360 on Facebook
Donate to e360
View mobile site
Subscribe to our newsletter
Subscribe to our feed:
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A Yale Environment 360
video explores Ecuador’s threatened Yasuni Biosphere Reserve with scientists inventorying its stunning forests and wildlife. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject).
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
In a Yale Environment 360
video, photographer Pete McBride documents how increasing water demands have transformed the Colorado River, the lifeblood of the arid Southwest. Watch the video.