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Showing posts from May, 2015

When It Rains, It Pours.

http://www.onearth.org/earthwire/texas-floods-drought-climate-change Source:   By Clara Chaisson, OnEarth, Natural Resources Defense Council. For Investigation:   10.3 Excerpt: After years of severe drought, Texas is swamped. The U.S. Drought Monitor reported last Thursday that Texas was finally free of  extreme drought. After five debilitating dry years, it was great news. But what the weekend then brought—torrential rainfall and flash flooding that left at least 17 dead and numerous people missing in Texas and Oklahoma—seemed like a very cruel joke (one that still isn’t over). By yesterday, Governor Greg Abbott had declared disasters in 37 counties. El Niño is partially to blame for the soaking, because its warm waters drive rain in the southern United States. But this oscillation between extreme dry and extreme rainfall is also indicative of climate change. As Eric Holthaus of Slate reports, “A steadily escalating whipsaw between drought and flood is one of the most

Findings from Select Federal Reports: THE NATIONAL SECURITY IMPLICATIONS OF A CHANGING CLIMATE

https://www.whitehouse.gov/sites/default/files/docs/National_Security_Implications_of_Changing_Climate_Final_051915.pdf Source:   The White House For Investigation:   10.3 11 page document with sections on Coastal Areas at Risk, Changing Arctic, Risks to Infrastructure, Demands on Military Resources Excerpt: ...With climate change, certain types of extreme weather events and their impacts, including extreme heat, heavy downpours, floods, and droughts, have become more frequent and/or intense. In addition, warming is causing sea level to rise and glaciers and Arctic sea ice to melt. These and other aspects of climate change are disrupting people’s lives and damaging certain sectors of the economy. The national security implications of climate change impacts are far-reaching, as they may exacerbate existing stressors, contributing to poverty, environmental degradation, and political instability, providing enabling environments for terrorist activity abroad. For example, t

In Brazil, cattle industry begins to help fight deforestation

http://www.globalsystemsscience.org/uptodate/2015-05-15inbrazilcattleindustrybeginstohelpfightdeforestation Source:    By Allie Wilkinson, Science.   For Investigation:   10.3

NASA Study Shows Antarctica’s Larsen B Ice Shelf Nearing Its Final Act.

http://www.nasa.gov/press-release/nasa-study-shows-antarctica-s-larsen-b-ice-shelf-nearing-its-final-act Source:   NASA Release 15-092. For Investigation:   10.3 Excerpt: A new NASA study finds the last remaining section of Antarctica's Larsen B Ice Shelf, which partially collapsed in 2002, is quickly weakening and likely to disintegrate completely before the end of the decade. A team led by Ala Khazendar of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, found the remnant of the Larsen B Ice Shelf is flowing faster, becoming increasingly fragmented and developing large cracks. ..."These are warning signs that the remnant is disintegrating," Khazendar said. "...This ice shelf has existed for at least 10,000 years, and soon it will be gone." ...Ice shelves are the gatekeepers for glaciers flowing from Antarctica toward the ocean. Without them, glacial ice enters the ocean faster and accelerates the pace of global sea level rise. This stud

Ice cores show 200-year climate lag.

http://www.bbc.com/news/science-environment-32599228 Source:   By Stephanie McClellan, BBC News. For Investigation:   10.3 Excerpt: Scientists have found a 200-year lag time between past climate events at the poles. The most detailed Antarctic ice core provides the first clear comparison with Greenland records, revealing a link between northern and southern hemisphere climate change. ...abrupt and large temperature changes first occurred in Greenland, with the effect delayed about 200 years in the Antarctic. The study appears in Nature journal. ...In the 1990s, scientists took ice cores from Greenland that revealed very abrupt and large swings in temperature approximately 20,000 to 60,000 years ago. But it wasn't clear how this influenced global climate change. The 3,405 metre-long ice core, taken from the centre of West Antarctica, is the longest high resolution ice core. Researchers documented 18 abrupt climate events. "This record has annual resolution, meaning we can