September 25, 2017

Elevated PM and Ozone

Today was a clear day throughout the nation with little observed AQI on the west coast. The Mississippi Valley and Great lakes region observed elevated amounts of PM and Ozone as seen in the AirNow image below (top left). It is believed that remnant smoke and recent agricultural fires in Arkansas and Missouri may have been key contributors to the elevated PM in the Mississippi Valley (HMS, top right). Ozone concentrations maintained low levels in the Great Lakes region today but it is believed that remnant smoke and high temperatures (NOAA Climate Chart, bottom left) have contributed to slight elevations of ozone in the region. Low amounts of Sulfate were observed in the Great Lakes region earlier today, as seen in the Copernicus image below (bottom right), with no known origin.

Posted by gaduran1 at September 25, 2017 11:50 PM
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