March 17, 2014

A St. Patrick's Day Code Green for Ozone in United States; Elevated AQI for PM2.5

Widespread Code Green, Good, Air Quality were observed today across the nation (top left). However, that was not the same story for PM2.5, which reached Code Yellow, Moderate, across the Great Lakes, Southeast and hourly concentrations peaked in Code Red and Orange for some areas across the Pacific Southwest (top right). In addition to elevated PM2.5 air quality indices, the National Weather Service (NWS) and Hazard Mapping Analysis team reported blowing dust and sand throughout similar regions, including southwest Texas. The blowing dust is likely due to dry and high wind conditions which is why the NWS forecast the region to experience Critical Fire Weather conditions (bottom left). Today's MODIS overpass suggested elevated aerosol optical depth in this region as well, particularly raised across Arizona, southwest of Albuquerque, NM which also made headlines for blowing dust (bottom right).

Posted by Alexandra St Pe at March 17, 2014 10:45 PM
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