The Gulf Coast seems rife with these spots, and of course with all population-linked metrics the Mississippi is apparent as a dividing line.
What I'm wondering is why the shaded areas around the hot spots on the Gulf Coast are so much bigger than the shaded areas around hotspots elsewhere.
Pennsylvania has a bunch of metal processing industries. Given Pittsburgh's reputation for steel production, that makes sense too.
Looks like a big blend of different industries in Chicago. That one I can't explain.
https://chicagodetours.com/history-of-chicago-transportation...
I've only been able to afford a 3 month rental of AQMesh's sensor, hopefully it'll trigger enough interest to get a few of these bad boys around Gary/Chicagoland.
If you drive past 80/94 or 90, there's a real rotten egg smell, or Hydrogen Sulfide. It's been known for a long, and is a common complaint in NWI https://web.archive.org/web/20210204024942/https://www.wbez....
When the sensor is up and running, I'll be adding the data to the air quality site I run https://millerbeach.community
So you may have one plant in Kansas and another one in Texas, but the Texas one processes and discharges 100x the volume the Kansas one does.
Which makes sense re: Gulf, because there's always more demand for oil, so most of the refineries probably operate more continuously.