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PNNL-led international study finds ultrafine aerosols have outsize impact on storm clouds, precipitation

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vehicles) and industrial air pollution—fuel powerful storms and influence weather much more than has been appreciated, according to a study published in the journal Science. Deep convective cloud (DCC) systems in the tropics produce copious precipitation and drive the global-scale circulation. —Jiwen Fan.

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PNNL modeling study finds climate benefit for cutting soot, methane smaller than previous estimates

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Cutting the amount of short-lived, climate-warming emissions such as soot and methane won’t limit global warming as much as previous studies have suggested, according to a new study from the Joint Global Change Research Institute in College Park, Md.,

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New Research Tools for Assessing Impacts of Aerosols on Climate

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Researchers at the University of Maryland and the University of Texas, Austin, have created a database that includes visibility measurements taken from 1973 - 2007 at 3,250 meteorological stations all over the world and released by the National Climatic Data Center (NCDC). University of Maryland Visibility Database.

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Study finds that worldwide SO2 emissions rose between 2000-2005 after decade of decline; China, shipping topped growth

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Global sulfur dioxide emissions by region. Sulfur aerosols impact human health, ecosystems, agriculture, and global and regional climate. While the overall global uncertainty in sulfur dioxide emissions is relatively small, regional uncertainties ranged up to 30%. Credit: Smith et al. Click to enlarge. —Smith et al.

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When You See Something, Say Something: Climate Emergency Alarm Bells Ringing While Local Electeds Pretend Not To Hear

Creative Greenius

Today, here in the South Bay of Los Angeles where I live, we have all the dots you’d ever need to connect the crisis level of global warming to the urgent action needed locally. So did Hoboken, New Jersey; New Britain, Connecticut; and Montgomery County, Maryland here in the USA. But instead of First Responders we have No Responders.

Climate 225
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Perspective: Regional Greenhouse Gas Cap-and-Trade Programs May be the Solution

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Cap-and-trade was first tried on a significant scale twenty years ago under the first Bush administration as a way to address the problem of airborne sulfur dioxide pollution–widely known as acid rain–from coal-burning power plants in the eastern United States. INTRODUCTION. Representatives Henry A. Waxman of California and Edward J.

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MIT study suggests carbon tax could help reduce US deficit, lower other taxes, reduce emissions

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A new report from MIT’s Joint Program on the Science and Policy of Global Change suggests that a tax on carbon emissions could help raise the money needed to reduce the US deficit, while improving the economy, lowering other taxes and reducing emissions. —Rausch and Reilly (2012). and Ed Markey (Mass.)

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