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
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 look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
Watch the video.
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.