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Nov 26, 2020
8:06
:13
am
valleus
Truly Addicted User
Annual rainfall line. West of the line represents where rainfall alone can’t
sustain agriculture and capital intensive projects (lots of irrigation and pumps) needed to sustain farms and towns.
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valleus
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valleus
Joined
Feb 1, 2017
Last login
Sep 27, 2024
Total posts
10,024 (2,499 FO)
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Messages
Author
Time
What drives the sharp line in light pollution?
Xenon
11/26/20 7:38am
Everything directly west of that line is farmland and has been for a long time
Magathisll
11/26/20 7:40am
Yep. The line goes thru a bunch of major cities and then nothing after that but
WDaddy
11/26/20 7:58am
Great Plains maybe?
John Doe
11/26/20 7:42am
Looks a lot like vegetation to me...
PortlandCoug
11/26/20 7:42am
RE: What drives the sharp line in light pollution?
BIG XII Coug
11/26/20 7:45am
Grazing vs farming
Busiturtle
11/26/20 7:51am
Turns out people live to the right of that line and not to the left
Yiowa
11/26/20 7:57am
It is interesting how everybody just stopped at about the same distance from the coast. A sociological component?
Dr MoBYU
11/26/20 8:01am
Annual rainfall line. West of the line represents where rainfall alone can’t
valleus
11/26/20 8:06am
My hunch is historically this was a factor
Busiturtle
11/26/20 8:15am
Google “annual precipitation map” and it correlates nicely along the vertical.
valleus
11/26/20 8:07am
YEP, my HCBW just showed me that map too.... interesting!!
Xenon
11/26/20 8:35am
Turns out water is kind of important to civilization
Tare
11/26/20 8:42am
people?
mudpupper
11/26/20 8:41am
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