Moderate AQI across Eastern U.S., Smoke from Canada Drifting South
The EPA AQI
loop, below left, shows Moderate AQI
from the Northeast through the Mid-Atlantic, the Great Lakes,
the Southeast, and the Mississippi Valley and into the Plains
States, with other patches in the Pacific Southwest
into the Pacific Northwest, in the Rocky Mountains, and
the northern Plains as well as spots of Unhealthy for
Sensitive Groups popping up in the Southeast, Northeast,
and Pacific Southwest.
NRL NAAPS surface sulfate imagery, below right, indicates
that to be a likely cause for the swath of Moderate AQIs
across most of the eastern part of the country.
HMS fire and smoke imagery, below left, shows smoke
drifting south from fires in the Northwest Territories
between the Great Bear Lake and the Great Slave Lake.
This shows up rather nicely in the MODIS
imagery below right, and might explain the Moderate
AQIs in the northern Plains. The high AQIs in the
east also show up in the elevated AOD
off the coast.
Posted by John Sullivan at July 8, 2014 11:59 PM