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Satellite study suggests California clean air regulations working to reduce PM2.5 emissions in state

Green Car Congress

Scientists from Emory University, NASA’s Jet Propulsion Laboratory and the California Air Resources Board teamed to analyze satellite data to determine the 15-year trend of PM 2.5 pollution in the state. is especially burdensome in California and accounts for the greatest percentage of health impacts attributable to air pollution.

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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Source: University of Leicester. In some parts of Asia, Africa and South America, the researchers identified data gaps which prevented them from characterizing ozone pollution exposure patterns. However, overall, Southern Hemisphere sites tend to have lower ozone pollution levels, and fewer days above 70 ppb. Click to enlarge.

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DISCOVER-AQ project to begin flights to enhance measurement of ground-level air-quality from space

Green Car Congress

This summer two NASA research airplanes will fly over the Baltimore-Washington region and northeast Maryland as part of a mission to enhance the capability of satellites to measure ground-level air quality from space. The flights will be supported by the US Environmental Protection Agency (EPA) and will aid EPA in monitoring pollutants.

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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. Aerosol impacts are a key uncertainty in understanding the current and future climate as well as extreme weather. —Jiwen Fan.

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EV equity: Some positive news!

Electric Auto Association

A new study on electrical vehicles (EV) equity issued from Resources for the Future (RFF) has found that the lowering costs of used EVs over the next ten years will increase lower-income EV adoption. Study finds more financial benefit for lower-income EV buyers.

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Satellite method provides insight into ozone-NOx-VOCs sensitivity for different locations

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Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog. Determining effective strategies for mitigating surface ozone (O 3 ) pollution requires knowledge of the relative ambient concentrations of its precursors, NO x , and VOCs.

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

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a joint venture between Pacific Northwest National Laboratory and the University of Maryland. International leaders took note and formed the Climate and Clean Air Coalition to Reduce Short-Lived Climate Pollutants in 2012. The model also incorporates greenhouse gases and pollutants that can result from those activities.

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