May 4, 2012

Moderate AQI Levels in the Mid-Atlantic, Pacific Southwest, southern Plains and Rocky Mountains States

PM2.5 levels (top left, courtesy AIRNow) reached Code Orange (Unhealthy for Sensitive Groups) in Oklahoma, Pennsylvania and California today. Much of the Mid-Atlantic, southern Plains States, and southern California experienced Code Yellow (Moderate) PM2.5 levels.   NOAA's Hazard Mapping System (HMS, bottom left) reported a large area of aerosols across the Texas panhandle and into Oklahoma, and Kansas. Code Yellow Ozone levels (top right, courtesy AIRNow) were experienced from southern California, up through Nevada, Utah, and Colorado. High tropospheric NO2 levels were reported by OMI in the Great Lakes and northern Plains States regions. 

International Feature:

The first image is a follow up image to John's post on Tuesday on the dust blowing off the west coast of the Africa as observed by MODIS AQUA on May 1st. The dust is more dispersed in this image as it is blowing off the coast and into the Atlantic. The second image is of planned burns in northern Australia. These burns are planned to reduce the risk of large wild fires breaking out later in the year. This year has been the wettest on record for northern Australia. It is believed that the abundant rain will lead to more growth of vegetation. When all of these plants dry out in the dry season (from now until November), the risk of an out of control fire is increased. 

Posted by Jaime Compton at May 4, 2012 11:48 PM
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