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CSIRO study finds ozone uptake in oceans much lower than previously thought

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CSIRO scientists have developed a new way to account for ozone in computer simulations of the climate. This latest modeling shows that the oceans take much less ozone out of the atmosphere than previously thought. Ozone (O 3 ) is formed by reactions of chemicals such as nitrogen oxides and volatile organic compounds—i.e.,

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Study links ambient PM2.5 and ozone specifically caused by vehicle exhaust emissions to ~361,000 premature deaths worldwide in 2010 and ~385,000 in 2015

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and ozone deaths, associated mortality rates, and population in G20 economies in 2015. and ozone worldwide in 2010 and ~385,000 in 2015, equivalent to 11.7% and ozone premature deaths in 2010 and 11.4% and ozone concentrations from transportation emissions resulted in 7.8 Transportation-attributable PM 2.5

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CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

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The California Air Resources Board (CARB) has released the results of a multiyear study evaluating exhaust emissions from the use of California Reformulated Gasoline (CaRFG) that contains 15 volume percent ethanol (E15). Hot-start CO 2 emissions showed a marginally statistically significant reduction of 0.3 % for E15 compared to E10.

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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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New study puts air-pollution related deaths in India in 2019 at 1.67 million

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Pollution-related losses could impede India’s aspiration to be a $5-trillion economy by 2024, the researchers concluded. Successful reduction of air pollution in India would lead to substantial benefits for both the health of the population and the economy.”. and that due to ambient ozone pollution increased by 139.2%.

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HEI report finds current levels of air pollution have reduced life expectancy by 1.67 years on average worldwide

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and tropospheric ozone. Ozone accounted for about 472,000 early deaths in 2017. The growing burden of disease from air pollution is among the major challenges facing national governments and public health officials, with far-reaching implications for national economies and human well-being. Ambient PM 2.5 accounted for 2.9

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Latest GHG Inventory shows California remains below 2020 emissions target; much steeper rate of GHG reductions required

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The California Air Resources Board released GHG emissions data for 2018 showing that emissions remain below 1990 levels but are effectively flat compared to 2017, while the economy grew by 4.3%. Source: California Air Resources Board (ARB). Total statewide 2018 GHG emissions were 425.3 million metric tons, compared to 424.5

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