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

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These are some of the findings of a new health assessment based on the Tropospheric Ozone Assessment Report (TOAR), an effort by the International Global Atmospheric Chemistry Project to create the world’s most comprehensive database of surface ozone observations from all available ozone monitoring stations around the globe.

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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. Deep convective cloud (DCC) systems in the tropics produce copious precipitation and drive the global-scale circulation.