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Researchers use satellite data to show vehicles are an under-recognized source of urban ammonia pollution

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By disrupting normal societal activities such as driving, COVID-19 lockdowns afforded a unique opportunity to study their impacts on the environment. On a national or global scale, most NH 3 pollution comes from agricultural sources, such as livestock manure. Bowman, Tzung-May Fu, and Muhammad O. 1c00730.

Pollution 321
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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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Volvo Group collaborates with California stakeholders to showcase potential of connected vehicle technologies with a Volvo VNL

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The project, led by the South Coast Air Quality Management District, is funded by the California Climate Investments program to reduce key criteria pollutants, greenhouse gases (GHGs) and petroleum usage.

Volvo 191
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MIT study says combustion emissions cause ~200,000 premature deaths/year in US; vehicles and power generation top sources

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Researchers from MIT’s Laboratory for Aviation and the Environment have concluded that ground-level PM 2.5 Steven Barrett, an assistant professor of aeronautics and astronautics at MIT, and colleagues have published their results in the journal Atmospheric Environment. Source: MIT. Click to enlarge. —Caiazzo et al.

MIT 378
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Researchers identify new nitrated PAH compounds from combustion that are hundreds of times more mutagenic than parent PAHs

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A team led by researchers at Oregon State University has discovered novel nitrated polycyclic aromatic hydrocarbon (NPAH) compounds produced by combustion sources or formed in the atmosphere that are hundreds of times more mutagenic than their parent PAHs, which are known carcinogens.

Pollution 275
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Study finds some improved cookstoves may emit more black carbon pollution than traditional mud cookstoves

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The researchers acknowledge funding from private donors, the National Science Foundation, the Swedish International Development Agency, the United Nations Environment Programme, the Vetlesen Foundation and the Alderson Foundation. Abhishek Kar, Ibrahim H. Rehman, Jennifer Burney, S.

Pollution 231
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Urban CO2 Domes May Enhance May Increase Ozone and PM, With Accompanying Increase in Mortality

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While the existence of higher CO 2 levels overs cities—CO 2 domes—has been known for more than a decade, their effects on local air pollution has up to now not been explored. As such, reducing locally emitted CO 2 may reduce local air pollution mortality even if CO 2 in adjacent regions is not controlled. Mark Jacobson.

Ozone 218