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Study quantifies impact of oil and gas emissions on Denver’s ozone problem

Green Car Congress

The first peer-reviewed study to directly quantify how emissions from oil and natural gas (O&NG) activities influence summertime tropospheric ozone (O 3 ) pollution in the Colorado Front Range confirms that chemical vapors from oil and gas activities are a significant contributor to the region’s chronic ozone problem.

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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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Although China and India remain the world’s largest consumers of coal, a new University of Maryland-led study found that China’s sulfur dioxide emissions fell by 75% since 2007, while India’s emissions increased by 50%. The content of this article does not necessarily reflect the views of the organizations.

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EPA issues ANPR on Clean Trucks Initiative, seeking input from public and stakeholders

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This action follows on the petitions from more than 20 organizations, including state and local air agencies, to revise and promulgate more stringent NO x standards. From 2007 to 2017, US NO x emissions dropped by more than 40%.

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EPA launches Cleaner Trucks Initiative to update NOx standards for heavy-duty trucks

Green Car Congress

This action follows petitions for a rulemaking on this issue from more than 20 organizations including state and local air agencies from across the country. From 2007 to 2017, US NO x emissions dropped by more than 40%. The US has made major reductions in NO x emissions, but it’s been nearly 20 years since EPA updated these standards.

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Study Finds Ozone Concentrations at Current Clean Air Standards Levels Can Impair Even Healthy Lungs

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Exposure to ozone at levels currently deemed safe by the NAAQS clean air standards can have a significant and negative effect on lung function, according to researchers at the University of California, Davis. The previous primary and secondary standards were identical 8-hour standards, set at 0.08 Earlier post.).

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California 2017 GHG inventory shows 1.2% total drop from 2016; transportation sector emissions up 1%

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Emissions are organized by the categories in the AB 32 Scoping Plan. Emissions from transportation sources were relatively constant from 2002 through 2007, declined through 2013, then increased by 9.0 Compared to 2016, California’s GDP grew 3.6% while the carbon intensity of its economy declined by 4.5%. Source: ARB. Source: ARB.

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Study projects net cooling of climate from ship emissions through 2050

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A recent study commissioned by the International Maritime Organization (IMO) estimated total emissions of 1046 Tg CO 2 yr ?1 1 from shipping in 2007, corresponding to 3.3% 1 of the total ship emissions in 2007. of the total anthropogenic CO 2 emissions in that year.

Climate 240