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Edit: I misread that you're showing light pollution, not air pollution, so disregard my comments. But maybe an idea for another site? Very cool. I was buying

Edit: I misread that you're showing light pollution, not air pollution, so disregard my comments. But maybe an idea for another site? Very cool. I was buying some land a few months ago, and made a similar map of the country to help choose areas with consistently good air quality. I couldn't get the calendar to change from October, so I couldn't check myself, but I was wondering if you adjust for seasonality. Some areas have a distinct "burning season" when farmers burn their fields and the air quality is significantly worse. I was also wondering if you're using publicly available sensor data. The granularity looks a lot better than what I had downloaded.

EricMausler 3y ago
Any thoughts on how someone would do something similar for water?
- deleted 3y ago
  [deleted]
seszett 3y ago
This is light pollution, it doesn't have much seasonality and evolves slowly.
- kedean 3y ago
  On a technical level that's true. But the actual intention here is "places where you can see the sky", not places with low light pollution. Air quality is highly seasonal, and winter tends to have far clearer skies for assorted reasons. Wouldn't you be a bit upset if you booked a place way out in the country for stargazing and every rancher had just lit their fields ablaze? That said it's probably asking quite a lot to composite that kind of data together in any meaningful way. You need a lot of domain knowledge for that.
stronglikedan 3y ago
> you're showing light pollution, not air pollution I wonder if there would be a strong correlation between the two.
- Gigachad 3y ago
  I’d think up to a point and then it flips. Highways and suburbs tend to have a lot of lighting and vehicles so the air pollution would be peaked, but then you get to the dense city areas where there is much much more lighting but not much capacity for vehicles so I’d think you’d see a dip.

EricMausler 3y ago

Any thoughts on how someone would do something similar for water?

deleted 3y ago
[deleted]

seszett 3y ago

This is light pollution, it doesn't have much seasonality and evolves slowly.

kedean 3y ago
On a technical level that's true. But the actual intention here is "places where you can see the sky", not places with low light pollution. Air quality is highly seasonal, and winter tends to have far clearer skies for assorted reasons. Wouldn't you be a bit upset if you booked a place way out in the country for stargazing and every rancher had just lit their fields ablaze? That said it's probably asking quite a lot to composite that kind of data together in any meaningful way. You need a lot of domain knowledge for that.

stronglikedan 3y ago

> you're showing light pollution, not air pollution I wonder if there would be a strong correlation between the two.

Gigachad 3y ago
I’d think up to a point and then it flips. Highways and suburbs tend to have a lot of lighting and vehicles so the air pollution would be peaked, but then you get to the dense city areas where there is much much more lighting but not much capacity for vehicles so I’d think you’d see a dip.