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Satellite study shows drought-stricken Colorado River Basin states depleting their groundwater

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A new satellite study finds more than 75% of the water loss in the drought-stricken Colorado River Basin since late 2004 came from underground resources. The Colorado River Basin (black outline) supplies water to about 40 million people in seven states. Credit: U.S. Bureau of Reclamation. Click to enlarge. —Jay Famiglietti.

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NOAA study: Increase in stratospheric aerosols has offset some recent climate warming

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A recent increase in the abundance of particles high in the atmosphere has offset about a third of the current climate warming influence of CO 2 change during the past decade, according to a new study led by NOAA and published in the online edition of Science. The increase in aerosols since 2000 implies a cooling effect of about 0.1

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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). Credit: Solomon et al., Click to enlarge.

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Study Concludes Colorado River Reservoirs Could Bottom Out from Warming, Water Management Business-as-Usual

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Colorado River Basin including major dams. All reservoirs along the Colorado River might dry up by mid-century as the West warms, according to a new study led by researchers at the University of Colorado, Boulder. Roughly 30 million people now depend on the Colorado River for drinking and irrigation water. Source: AGU.

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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. Cooper, from the Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, chairs the TOAR Steering Committee and has been working to develop the assessment since 2014. Owen Cooper.

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EIA releases report on CO2 emissions by state; California led in 2010 with transportation-sector emissions

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The US Energy Information Administration (EIA) has released a new report, State-Level Energy-Related Carbon Dioxide Emissions, 2000-2010. Factors such as size, population density, available fuels, types of businesses, climate, all play a role in both total and per capita emissions, the EIA noted. Climate Change Emissions'

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Devil in the Details: World Leaders Scramble To Salvage and Shape Copenhagens UNFCCC Climate Summit

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Although most countries have already revealed their opening emissions reduction proposals, UNFCCC Executive Secretary Yvo de Boer pointed out Thursday that “ we still await clarity from industrialized nations on the provision of large-scale finance to developing countries for immediate and long-term climate action. by Jack Rosebro.

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