I took the PM2.5 from the years 2016, and 2007, over the Midwest U.S., from van Donkelaar and Martin et al. Converted to google earth format so the spatial pattern can be explored in detail with the zoom/pan feature.
I'm making two versions available... one is 2016. The other is the change from 2007 to 2016. You will need google earth installed on your computer for these to work.
The data source is here
The full citation to the data source is: van Donkelaar, A., R. V. Martin, et al. (2019). Regional Estimates of Chemical Composition of Fine Particulate Matter using a Combined Geoscience-Statistical Method with Information from Satellites, Models, and Monitors. Environmental Science & Technology, 2019, doi:10.1021/acs.est.8b06392. [Link]
You can change the transparency of the overlay under places / demo_ge_groundoverlay / ge_groundoverlay / properties. Questions, email me charles-stanier@uiowa.edu
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