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variety of flashes (yellow, green, blue) , mixed flash, and double green flash
square sun 1894 by Nansen vs. 2012
square
sunset at arctic vs tropic
was late spring, but active layer catches up more than last year!
stone movement
Permafrost in Hawaii
https://www.tandfonline.com/doi/full/10.1080/15230430.2023.2186485
https://www.tandfonline.com/doi/full/10.1080/15230430.2023.2186485