Kurt wrote:
Good point. I had always assumed that light pollution was bluer. I've
never heard of any studies on whether urban light pollution scatters a
reddened or bluer light.

Urban light sources are almost certainly redder to begin with. The Sun
has an effective temperature around 5800 K, whereas I'd guess that most
man-made lights are around 2000 to 3000 K, something in that neighborhood.

Brian Tung
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