Average Daily PM 2.5 By County in 2011

MOTD7_19_17_AvgPM252011Particulate Matter (PM) are small particles that contain microscopic solids and liquid droplets that are suspended in the air which can be inhaled and cause health effects. PM range in size, but particles less than 10 mm present the greatest threat. Some particles are emitted directly from a source such as, smokestacks, fires, construction sites, etc. and others are a result of complex atmospheric reactions [1].

Check out this map that shows the average daily PM 2.5 by county in 2011. From the graph we see a three distinct darkly shaded clusters indicating a high amount of daily exposure. The first cluster includes counties in Nevada and Utah. The second cluster includes counties within Colorado, Wyoming, Kansas and Nebraska. The third and most prominent includes counties within various southern states such as, Mississippi, Alabama, Georgia, Tennessee, Kentucky, Indiana, Illinois, Ohio, Pennsylvania, Virginia, West Virginia and North and South Carolina. In contrast, we can see states such as Oregon, Texas, California and Arizona are shaded yellow indicating a lower daily average.

By Julia Watson

 

EDF & Google Earth- Mapping Outreach for Natural Gas Leaks

I came across this really interesting new mapping initiative on the Environmental Defense Fund’s site, that maps natural gas leaks, mostly methane, in cities across the US. This outreach is a collaboration of EDF and Google Earth, which is using “specially equipped Google Street View cars” to collect information. This project is still in it’s start-up stage, so there are only a few cities but more are being added and you can also nominate your city.

The map shows the areas of methane leaks and indicates whether the leak has a low, medium or high impact on the environment. It is color coordinated and easy to understand. Seeing all the points of interest across the mapped cities of Boston, Syracuse, Staten Island, Indianapolis, and Burlington, make you think what it happening in your closet city.

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Here is the map for Boston! Check out the other cities and nominate yours! Go to http://www.edf.org/climate/methanemaps/city-snapshots or click here.

Posted by Intern Eva Gerrits. Information from http://www.edf.org. Contact gis@vertices.com