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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. Ozone is harmful to humans at ground-level, causing pulmonary and heart disease. —Guy Brasseur.

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Study: 2/3 of aviation climate impact due to emissions other than CO2

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of the human-made climate impact; two-thirds of this impact are caused by emissions other than CO 2 , according to a new study by researchers in Europe and the US. CO 2 and NO x aviation emissions and cloud effects remain a continued focus of anthropogenic climate change research and policy discussions. —Lee et al.

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Study: air pollution causes 800,000 extra deaths a year in Europe and 8.8 million worldwide

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Air pollution could be causing double the number of excess deaths a year in Europe than has been estimated previously, according to a study published in the European Heart Journal. Estimated excess mortality attributed to air pollution in Europe, and the contributing disease categories. Credit: European Heart Journal.

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California ARB and NOAA Collaborating in $20M Research on Interaction of Air Pollution and Climate Change; One Atmosphere Approach

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Schematic diagram of the trade-offs between the implications for regional air quality and global climate change of new policies for management of the atmosphere. The complex roles that ozone and aerosols play in the atmosphere provide examples of such trade-offs. Source: NOAA. Click to enlarge.

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EEA report finds more action needed to protect Europe’s most vulnerable citizens from air pollution, noise and extreme temperatures

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The EEA report “ Unequal exposure and unequal impacts: social vulnerability to air pollution, noise and extreme temperatures in Europe ” draws attention to the close links between social and environmental problems across Europe. Climate change adaptation helps to prepare for increasingly frequent and extreme heatwaves.

Pollution 265
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New study puts air-pollution related deaths in India in 2019 at 1.67 million

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and that due to ambient ozone pollution increased by 139.2%. Climate change exacerbates pollution, the researchers noted, through atmospheric stagnation, temperature-driven increases in particulate matter, and ground-level ozone formation, which are likely to be particularly severe in India. since 1990.

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Study Finds Ozone, Nitrogen Change the Way Rising CO2 Affects Earths Water

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Through a recent modeling experiment, a team of NASA-funded researchers have found that future concentrations of carbon dioxide and ozone in the atmosphere and of nitrogen in the soil are likely to have an important but overlooked effect on the cycling of water from sky to land to waterways. Cronin, J. Melillo, D. Kicklighter, C.

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