Topic: Global warming

Risk of Amazon Rainforest Dieback is Higher Than IPCC Projects

Oct. 21, 2013

[caption id="attachment_42791" align="alignright" width="300" caption="During the 2005 and 2010 droughts, satellites detected decreased vegetation greennessor a lower Normalized Vegetation Index (NDVI)over the southern Amazon rainforest (orange and red regions). NDVI is derived from MODIS instruments on NASA's Terra and Aqua satellites. Image courtesy of Ranga Myneni, Jian Bi and NASA."]
NDVI Change in Amazon During Droughts
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AUSTIN, Texas    A new study suggests the southern portion of the Amazon rainforest is at a much higher risk of dieback due to stronger seasonal drying than projections made by the climate models used in the latest report by the Intergovernmental Panel on Climate Change (IPCC).

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Doomsday Scenarios Make Better Fiction Than Science, Says Researcher Karl Butzer

June 20, 2012
Doomsday Scenarios Make Better Fiction Than Science, Says Researcher Karl Butzer

For more than 50 years Karl Butzer, a renowned environmental archaeologist at The University of Texas at Austin, has trekked across continents, sifted through countless excavations and pored over collections in some of the world's greatest libraries and museums in a quest to better understand hum

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Scientists Discover New Site of Potential Instability in West Antarctic Ice Sheet

May 10, 2012

Using ice-penetrating radar instruments flown on aircraft, a team of scientists from the U.S. and U.K. have uncovered a previously unknown sub-glacial basin nearly the size of New Jersey beneath the West Antarctic Ice Sheet (WAIS) near the Weddell Sea. The location, shape and texture of the mile-deep basin suggest that this region of the ice sheet is at a greater risk of collapse than previously thought.

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Scientists Explore Connections Between Climate, Land Use and Dead Zones

April 22, 2011

Researchers at The University of Texas at Austin and colleagues will use a three-year, $1.5 million grant from NASA to develop computer models to study how changes in climate and land use affect watersheds and coastal ecosystems, seeking to improve understanding of the Texas coast, including dead zones that form in the Gulf of Mexico.

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When climate change isn't the only answer

April 18, 2011
Professor Mike Singer

Biologist Mike Singer says climate scientists can sometimes go wrong when they try too hard to attribute local effects to global climate change.

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