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New Emissions Analytics study suggests pollution from tire wear now 1,850 times worse than exhaust emissions

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In early 2020, UK-based independent testing firm Emissions Analytics published a study claiming that tire particulate wear emissions were 1,000 times worse than exhaust emissions ( earlier post ). —Emissions Analytics. Quoting such ratios, however, needs careful interpretation.

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HEI launches two new non-tailpipe particulate emission studies

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The Health Effects Institute (HEI) has launched two new studies funded under RFA 21-1, Quantifying Real-World Impacts of Non-Tailpipe Particulate Matter Emissions. What is the contribution of NTP emissions to ambient PM in large, high traffic cities? The project will be executed as four integrated sub-studies.

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Modeling study suggests 1.8M excess deaths attributable to urban air pollution in 2019

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A new modeling study led by researchers from George Washington Universit (GWU) finds that 86% of people living in cities worldwide (~2.5 A second study, also led by the GWU researchers, finds that nearly 2 million cases of asthma in children are linked to traffic-related nitrogen dioxide air pollution, with two in three occurring in cities.

Pollution 468
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Study finds coal trains add significant amount of PM2.5 pollution in urban areas

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Coal trains and terminal operations add a significant amount of fine particulate matter (PM 2.5 ) pollution to urban areas—more so than other freight or passenger trains— according to a study conducted in Richmond, California, by the University of California, Davis. The results indicate coal trains add on average 8.32

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Study: air pollution caused 1.1M deaths across Africa in 2019, toll from outdoor pollution rising

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Air pollution was responsible for 1.1 Air pollution was responsible for 1.1 Deaths attributable to household air pollution and ambient particulate matter (PM 2.5 ) air pollution in Ethiopia, Ghana, Rwanda, and overall in Africa, 1990–2019. The most disturbing finding was the increase in deaths from ambient air pollution.

Africa 397
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NOAA study finds reducing particulate air pollution in N America & Europe increases hurricanes in N Atlantic

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A new NOAA study covering four decades of tropical cyclones found that reducing particulate air pollution in Europe and North America has contributed to an increase in the number of tropical cyclones in the North Atlantic basin and a decrease in the number of these storms in the Southern Hemisphere. Credit: NOAA.

Pollution 370
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Study finds changes in air pollution due to EV adoption are not distributed equally

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A team of researchers from the University of California, Berkeley; University of North Carolina, Chapel Hill; and University of Miami has analyzed the implications of California’s Clean Vehicle Rebate Project (CVRP) for emissions of greenhouse gases and criteria air pollutants, both in aggregate and in their distribution.

Pollution 307