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A comment on Air-conditioners do great good, but at a high environmental cost. Parent comment

Re:Air-conditioners do great good, but at a high environment... by bustadjustme on Tuesday August 28, 2018 @03:01PM (#17861809)
Wow, there's some fantastic mapping of this effect from a few years ago: https://calepa.ca.gov/2015/09/16/urbanheat/. Links to a study and lots of data produced from it.

Southern California: "urban heat archipelago".

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Re:Air-conditioners do great good, but at a high environment... by njarboe on Tuesday August 28, 2018 @03:56PM (#17862311)
From the linked page:

"largest effect is in southern California, where the urban heat islands blur together to form an “urban heat archipelago” with average temperatures up to 19° F higher in the Riverside-San Bernardino region at the eastern end of the basin."

If it is really 19° F higher in Riverside due to urbanization(hard to believe that really), I can see why correcting historical temps for urban heat island effects is so necessary. How to do that accurately must be fiendishly difficult.

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