June 17, 2014

Increased AOD in Mid-Atlantic region.

The first image, courtesy NOAA HMS, shows the widespread fire and smoke activity in the southeast region of the U.S, stretching from southern Texas to Florida. There are also fires and plumes in the center of the Plains region and isolated fires throughout the Pacific Southwest. The next image, courtesy MODIS Aqua, shows an elevated AOD in the Northeast U.S., with largest values in the coastal New England region.

The forecast below, courtesy EPA AIRNow, shows the animated AQI loop for the country today. Most of the eastern half of the U.S. had moderate AQI conditions and the coastal Mid-Atlantic region reached U.S.G. levels. There has been continue moderate AQI values for southern California due to urban aerosols. The next image, courtesy NAAPs, shows a large aerosol plume moving across the northern portion of the country. This shows that this is mostly a dust filled plume that may also have the presence of sulfates. This aerosol load is most likely causing the elevated AOD in the Mid-Atlantic region.

The first image, courtesy GEOS Chem, shows a similar aerosol load moving across the northern U.S. and over the Mid-Atlantic region. Based on the color scale, this aerosol may be more prevalent at the surface in the coming days for the eastern U.S. The last image, courtesy OMI NRT, shows elevated NO2 levels that may also correspond to the aerosol load moving throughout the country.

Posted by John Sullivan at June 17, 2014 8:01 PM
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