New study shows three abrupt pulses of CO2 during last deglaciation

Ice core

A new study – led by Oregon State University, with significant contributions from the University of Washington – shows that the increase of atmospheric carbon dioxide that contributed to the end of the last ice age more than 10,000 years ago did not occur gradually but rather was characterized by three abrupt pulses. Scientists are not sure what caused these abrupt increases, during which carbon dioxide levels rose about 10 to 15 parts per million – or about 5 percent per episode – during a span of one to two centuries. It likely was a combination of factors, they say, including ocean circulation, changing wind patterns and terrestrial processes.

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Fire effects on forest structure, aridity and global climate change, and more: This week's published research

weekly research jupiter

Each week we share the latest publications coming from the College of the Environment. Last week, ten new articles co-authored by members of the College of the Environment were added to the Web of Science database, includeing studies on zooplankton in tidal marshes, Gale Crater surface energy, and the effects of habitat fragmentation. Check them out!

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Fires and floods: North Cascades federal lands prepare for climate change

J Meyer

In a country that boasts an awe-inspiring system of national parks, the Pacific Northwest may be especially lucky. But even remote parks and forests can’t escape the problem of human-induced climate change. Future shifts could affect everything from how people access the parks to what activities are possible once they arrive – not to mention the plants and animals that call those places home. For a report released this week, University of Washington scientists worked with federal agencies to pinpoint natural resources sensitive to a warmer climate in the North Cascades region, and outline detailed management responses to minimize the adverse impacts on land and in water.

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Climate Impacts Group partners with Swinomish Tribe to reduce climate effects

Swinomish Indian Tribal land

The Swinomish Indian Tribal Community, located on the southeastern peninsula of Fidalgo Island in Washington State, was recognized at the 2014 National Congress of American Indians’ annual meeting in Atlanta for their remarkable efforts to address climate change impacts on tribal lands. The UW Climate Impacts Group was a key partner in helping secure the recognition, which was given by the Honoring Nations Program from Harvard University’s Project on American Indian Economic Development. 

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