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EPA awards $6M in research funding to improve air quality models

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The US Environmental Protection Agency (EPA) announced $5,959,842 million in research funding to nine institutions to improve air quality models used to simulate ozone, particulate matter (PM), regional haze, air toxics, and emerging pollutants. It will also inform the development of strategies for improving air quality.

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Study finds pollution strengthens thunderclouds, warming the atmosphere

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Pollution warms the atmosphere through summer thunderstorm clouds, according to a computational study by a team of researchers from Pacific Northwest National Laboratory (PNNL), Hebrew University in Jerusalem and the University of Maryland published in Geophysical Research Letters. —Fan et al. —Jiwen Fan.

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

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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

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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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Researchers predict average Gulf of Mexico hypoxic “dead zone” slightly above-average in Chesapeake Bay

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The Chesapeake Bay prediction is based on models developed by NOAA­-sponsored researchers at the University of Maryland Center for Environmental Science, University of Michigan, and again relies on nutrient loading estimates from USGS.

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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. Ultrafine aerosols—minute particles from urban (e.g., —Jiwen Fan. Jiwen Fan, Daniel Rosenfeld, Yuwei Zhang, Scott E.