Friday, June 5, 2015

Heat islands

The Sensitive Plant
Frank Dicksee

Big cities are generally warmer than rural areas, especially at night.  Asphalt and concrete absorb and retain the heat better than trees and vegetation.  Not to mention, all those hot humans running around.

This is called "urban heating." It was first described in the early 1800's by Luke Howard, an amateur British meteorologist.  

Just look at this lovely summery forecast. Despite being a very big city, Seattle is seldom hot at night.  We have cold Puget Sound to thank for that. Of course the Seattle natives (and ladies of a certain age) will complain about the heat this week.

And I'll be busy with the garden hoses.  Have a good one, wherever you are!


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