No Mosher, that is not their definition. I thought you read the paper. Their definition is that urban environments are those that are “dominated” by a built environment. Nothing says that you couldn’t have buildings and parking lots right next to the instrument. In fact, later discussion would indicate that any place smaller than 100,000 would be rural. Check page 5 under “Data”. And the 10,000 meters is relative to places that are classified by a map to be urban. It has nothing to do with there being structures present near the instrument. ROFL. Did you actually think that one third of their instruments were in completely unbuilt environments?
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