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Turns out little saucer-shaped pieces of wind-blown spruce bark make good growth sites for surface hoar. 📷 @dylatory_

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Sometimes we need a little help with crystal ID.
#cactus

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New snow settlement

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I like these little surface hoar piles of dandruff you see mid morning. The sticks, needles, and branches absorb short wave radiation and the bonds melt. The SH drops to the snow surface where they stay cold and preserved due to long wave losses. A little breeze will do the same thing, but distributes the SH flakes more widely.
#surfacehoar
#snowscience
#surfaceenergy

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Alpen taking care of business while Dylan is taking care of business.

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Ice escalator. Greenland ice sheet delivering icebergs to the Davis Strait and North Atlantic.
#Seat31F
#Greenland

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Getting close to the edge of the sheet. Greenland from 38,000’. #seat31F

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Home sweet home. South of Prudhoe Bay.

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Morning downslope atmospheric drainage - flow right to left. Brooks Range.

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Mini low-level lenticular. Complex air in complex terrain. Brooks Range.

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Tipping buckets and mounting base headed for Montana. Measure your snowmelt rate and volume coming through the pack. This is the time to install for the 2019/2020 rain-on-snow season and the 2020 runoff season.

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Snow fence in Kotlik. Smart people making do.
#usewhatyougot
#commonsense

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Cauliflower. East Mississippi.
#seat31F

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Radar love. 6 mm across the beam.
#cryotoolbox

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Piece of depth hoar chain from AK in March. Square shape of cup looks like a FMCW radar horn.
#snowscience
#snowcrystal
#depthhoar

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Snow stratigraphy matters to caribou. Energy expenditure changes radically based on snow depth and snow properties. These poor beasts kept breaking through, but randomly. Based on personal experience, I would rather post-hole or stay on top. The uncertainty takes even more energy.

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Caribou footprints preserved in windslab. Print was buried by drifting snow, then exposed again by wind erosion. Just like the dinosaur prints in Utah, but a different mineral.
#geologyrocks
#snowiscool

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Cool clouds and happy sunset at Happy Valley. Already too hot in Colorado. 👹

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Big avalanche deposits all over Colorado. This is after significant melt, which diminishes the actual magnitude of the event. @dylatory_ and @willsend4tacos for scale.
Saint Johns

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Permafrost melting in Alaska poses huge environmental threat

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