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Artic light pollution?
Posted: Mon Dec 19, 2022 4:07 pm
by jidanni
Why are vast areas of northern North America completely light polluted?
I was going to ask upstream, but they don't have the problem there on
https://www.lightpollutionmap.info .
Re: Artic light pollution?
Posted: Mon Dec 19, 2022 5:38 pm
by jidanni
At least the ATLAS 2015 map doesn't have the problem.
Re: Artic light pollution?
Posted: Mon Dec 19, 2022 8:02 pm
by Psyberia-Support
The images are exactly the same.
Re: Artic light pollution?
Posted: Sun Dec 25, 2022 2:05 am
by jidanni
Well, all I know is on image I posted above, from the Bering Straits all the way to the Northwest Territories of Canada, you see this strange green glow. It seems that the occurrence of arctic tundra has been inserted into the light pollution layer.
Re: Artic light pollution?
Posted: Tue Dec 27, 2022 7:57 pm
by hamish
If you check FAQ on the help page (
https://www.lightpollutionmap.info/help.html#FAQ ) it says:
"1. Why is Canada lit up like a christmas tree?
Two words. Aurora borealis. It is very hard to remove Aurora borealis from VIIRS data."
so it is just natural light pollution on the data.
Re: Artic light pollution?
Posted: Wed Dec 28, 2022 8:40 pm
by Psyberia-Support
Thanks a lot for the explanation hamish.