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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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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. Source: University of Leicester. Click to enlarge.

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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.,

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Study finds increased air pollution can worsen both drought and flooding

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Zhanqing Li (lead author), Feng Niu and Yanni Ding of the University of Maryland; Jiwen Fan of Pacific Northwest National Laboratory; Yangang Liu of Brookhaven National Laboratory; and Prof. In polluted air, more and smaller drops are formed. This explains why air pollution can exacerbate both drought and flood. —Prof.

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