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Studies find global COVID-19 lockdowns have significantly reduced PM2.5 and NO2 pollution, but ozone up

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Levels of two major air pollutants have been reduced significantly since lockdowns began in response to the COVID-19 pandemic, but a secondary pollutant—ground-level ozone—has increased in China, according to new research. In addition to nitrogen dioxide, one of the new studies finds PM 2.5 Bauwens et al.

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China study connects ozone pollution to cardiovascular health

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Exposure to ozone, long associated with impaired lung function, is also connected to health changes that can cause cardiovascular disease such as heart attack, high blood pressure and stroke, according to a new study of Chinese adults. The team studied 89 healthy adults living in Changsha City, China, for one year. 2017.2842.

Ozone 170
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How Engineers Can Help Protect Earth From Worsening Climate Change

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Fortunately, we still have a narrow window of opportunity to alter the Earth’s climate path, and I believe we can do it. Climate change is a global societal crisis that is causing devastating consequences. To create a sustainable environment, we need to contain air pollution.

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Study finds megacity traffic soot can reach high altitudes and be transported over long distances, contributing to global warming

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results indicate that traffic is the dominating source of BC and particulate air pollution in the metropolitan area of La Paz/El Alto. Soot particles from combustion processes significantly contribute to air pollution because they contain heavy metals and polycyclic aromatic hydrocarbons which are toxic.

Bolivia 247
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Study finds anthropogenic PM and dust undercutting global solar energy production

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According to a new study led by a team at Duke University, airborne particulate matter and dust are cutting solar photovoltaic energy output by more than 25% in certain parts of the world, with roughly equal contributions from ambient PM and PM deposited on photovoltaic surfaces. So we put together a comprehensive model to do just that.

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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 open access study is published in the journal Scientific Reports. Click to enlarge. —Can Li.

India 170
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Study finds transport, residential heating main sources of black carbon in Russian Arctic

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According to a new international study published in the Proceedings of the National Academy of Sciences , 38% of black carbon in the Russian Arctic originates from transport and 35% from residential heating sources, while open fires, power plants, and gas flaring are responsible for only 12%, 9%, and 6% respectively. 1613401114.

Carbon 150