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https://doi.org/10.1080/15230430.2025.2532202
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volcanoes in the Cascade Range
nice spring day!
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chinook arch then positive temp!
chinook arch
Antarctica permafrost network!
DCIM100GOPROG0028262.
maximum active layer
snow melt days were 2-3 weeks different in last 4 years but maximum active layer thickness was almost same +- 2cm
pingo in fall colors
sunset time (rest of the sun is behind horizon)
variety of flashes (yellow, green, blue) , mixed flash, and double green flash
square sun 1894 by Nansen vs. 2012
square