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US DOI report highlights impacts of climate change on Western water resources

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Projected median temperature change in °F (of 112 climate projections) over the Western United States, 2070–2099 relative to 1950–1979. The report, which responds to requirements under the SECURE Water Act of 2009, details several increased risks to western United States water resources during the 21 st century. Source: DOI.

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Study Finds Stratospheric Water Vapor Is An Important Driver of Decadal Global Surface Climate Change

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Decadal warming rates arising from (i) greenhouse gases and aerosols alone (black); (ii) that obtained including the stratospheric water decline after 2000 (red); and (iii) including both the stratospheric water vapor decline after 2000 and the increase in the 1980s and 1990s (cyan). Stratospheric water vapor and radiative processes.

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Global Ice Age Climate Patterns Influenced by Bering Strait

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In a vivid example of how a small geographic feature may have far-reaching impacts on climate, new research shows that water levels in the Bering Strait—which separates the US and Russia by only 90 kilometers (56 miles)—helped drive global climate patterns during ice age episodes dating back more than 100,000 years.

Climate 199
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Water Levels Dropping in Some of the Worlds Major Rivers

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Graphic courtesy Journal of Climate, modified by UCAR.) Rivers in some of the world’s most populous regions are losing water, according to a comprehensive study of global stream flows. The results will be published 15 May in the American Meteorological Society’s Journal of Climate. Click to enlarge.

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Study Finds Unexpected Decadal Decline in Global Evapotranspiration, Links It to Moisture Limitation in Southern Hemisphere

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The soils in large areas of the Southern Hemisphere, including major portions of Australia, Africa and South America, have been drying up in the past decade, according to the first major study of evapotranspiration on a global basis. This is the first time we’ve ever been able to compile observations such as this for a global analysis.

Global 170
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Researchers Predict Permafrost Thaw Will Intensify Climate Change More Quickly Than Previously Thought; Melting of Greenland Icesheet Could Drive More Water Than Previously Thought to North American Northeast

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Before this study, we didn’t know how fast that carbon could potentially be released from permafrost, and how this feedback to climate would change over time. An understanding of the rate of carbon release is necessary to estimate the strength of positive feedback to climate change, a likely consequence of permafrost thaw. Permafrost.

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Study Finds Indian Ocean Sea-Level Rise Threatens Coastal Areas; Climate Change Partly Responsible

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The study, led by scientists at the University of Colorado at Boulder (CU) and the National Center for Atmospheric Research (NCAR) in Boulder, Colo., finds that the sea-level rise is at least partly a result of climate change. Global sea-level patterns are not geographically uniform. The Indo-Pacific warm pool. Credit: NASA.