Southern California AQIs reach Unhealthy for Sensitive Groups
The Google Earth image below left shows the today's MODIS
overlaid with observed air quality index values from the EPA
AirNow project. This indicates areas of Moderate AQI
Rocky Mountains, Great Lakes, Mid-Atlantic, Mississippi Valley,
Southeast, and Pacific Southwest regions, with areas of the
Southeast and Pacific Southwest reaching Unhealthy for Sensitive
imagery, below right, shows elevated levels
of tropospheric NO2
over southern California, as
well as moderately elevated levels in the Great Lakes and
Northeast regions, which might contribute to the sub-optimal
AQIs in these areas.
The EPA AirNow peak ozone map, below left, shows a large area
of Moderate ozone in southern California, with areas at
Unhealthy for Sensitive Groups in the same area and in
Georgia, suggesting that as a cause for the poor air
quality in those areas.
The webcam image from Joshua Tree National Park, below right,
supports the EPA data, showing a largely obscured far
ridge line and blurred hills nearby. The links for the
National Park Service webcams, including this one, are
in the right sidebar.
Posted by Daniel Orozco at June 19, 2014 11:59 PM