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California ARB releases final version of proposed update to Climate Change Scoping Plan; LEV IV

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the final version of the proposed First Update to the Climate Change Scoping Plan (First Update). Achieving our long-term climate goal and 2032 ozone standards will require a much deeper penetration of ZEVs into the fleet. The California Air Resources Board (ARB) has released. The draft version was released in February.

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International study identifies 14 key measures to reduce methane and black carbon emissions; reduction in projected global mean warming of ~0.5 °C by 2050

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Circle areas are proportional to values for (A and B) climate change, (C and D) human health (values for population over age 30), and (E and F) agriculture. Methane is both a potent greenhouse gas and an important precursor to ground-level ozone. National benefits of the CH 4 plus BC measures versus the reference scenario.

Carbon 257
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California ARB soliciting research suggestions for FY 2012-2013 plan; sustainable communities, behavior, pollutant exposure, air pollution science, GHG targets

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The California Air Resources Board (ARB) is soliciting research suggestions for the Fiscal Year 2012-2013 Annual Research Plan in the form of brief conceptual descriptions that address specified research gaps and support the Board’s ongoing regulatory and policy priorities. The deadline to submit research concepts is 31 January 2012.

Pollution 231
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California Air Resources Board adopts GHG cap-and-trade program; first auctions slated for Aug/Nov 2012

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The regulation becomes effective 1 January 2012; first auctions (for 2013 allowances) will be held in August and November, 2012. When the nation addresses the growing danger of climate change, as I believe it must and will, California’s climate plan will serve as the model for a national program. business-as-usual.

2012 218
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US and UK researchers report direct measurement of key atmospheric reactant; more rapid formation of secondary aerosols

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Credit: Marston (2012), Photo credit: Daniel Stein/Istockphoto.com.Click to enlarge. Our results will have a significant impact on our understanding of the oxidizing capacity of the atmosphere and have wide ranging implications for pollution and climate change. Welz et al. Carl Percival. —Welz et al.

Ozone 268
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UMD-led study finds China’s SO2 emissions down 75% since 2007, India’s up 50%; India may now be the top SO2 emitter

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Two maps compare total annual sulfur dioxide amounts for India and China during 2005 (left) and 2016 based on Ozone Monitoring Instrument measurements. Illustration: Chris McLinden, Environment and Climate Change Canada. They also cannot account for changing conditions or unforeseen policies. Click to enlarge.

India 170
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Study finds warming caused by synthetic greenhouse gases could outweigh climate benefits from phasing down CFCs

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Chlorofluorocarbons (CFCs)—commonly used in refrigerators and air conditioners—play a role in creating a hole in the ozone layer over Antarctica. Despite this, synthetic greenhouse gases (SGHGs) beyond the CFCs have received relatively little attention up to now.

Climate 199