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Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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In a statement released this morning, President Barack Obama said he has requested that US Environmental Protection Agency (EPA) Administrator Lisa Jackson withdraw the agency’s draft Ozone National Ambient Air Quality Standards (NAAQS) rulemaking. Earlier post.) National Ambient Air Quality Standards (NAAQS).

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WMO: Atmospheric Concentrations of Main Greenhouse Gases in 2008 Set New Highs

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Relative contribution of major greenhouse gases to the overall change in radiative forcing between 1979 and 1984 (a) and from 2003 to 2008 (b). Atmospheric levels of major greenhouse gases continue to increase, according to the World Meteorological Organization’s (WMO) 2008 Greenhouse Gas Bulletin. from 2007 to 2008.

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Research shows clean fuel-use for ships off California coast extremely effective in reducing sulfur dioxide pollution

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The California data were compared to ship-plume measurements made by NOAA near the Port of Houston, Texas in 2006. More findings from the CalNex research on a variety of subjects, from the formation of ozone to the interactions of particles and clouds, are being presented at a four-day workshop May 16 through 19 in Sacramento, California.

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EPA Proposes Transport Rule to Cut Pollution from Power Plants in 31 States and DC; New Approach for Pollution Reduction

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This proposal reduces emissions contributing to fine particle (PM 2.5 ) and ozone nonattainment that often travel across state lines. SO 2 and NO x react in the atmosphere to form fine particle pollution and ground-level ozone (smog), which are linked to widespread illnesses and premature deaths. NO x emissions would drop by 52%.

Pollution 218
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California ARB greenlights states GHG cap-and-trade program

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The regulation has been in development for the past two years since the passage of the Scoping Plan in 2008. There are also provisions to develop international offset programs that could include the preservation of international forests. ARB Staff presentation on Cap-and-Trade Program. Proposed Regulation to Implement.

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UN Review of Recent Climate Research Concludes That Impacts Of Climate Change Coming Faster Than Anticipated

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Significant climate anomalies 2008/2009. In 2008, the minimum ice extent was 9% greater than in 2007, but still the second lowest on record. The loss of ice from West Antarctica is estimated to have increased by 60% in the decade to 2006, and by 140% from the Antarctic Peninsula in the same period. Click to enlarge.

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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

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80.27, “high ozone season” means the period from June 1 to September 15 of any calendar year and “regulatory control period” means the period from May 1 to September 15 of any calendar year. Current Legal Requirement for Use of Anhydrous Ethanol in the United States. 40 CFR § 80.27 addresses controls and prohibitions on gasoline volatility.