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Infrared photos, mostly by Cora Shea

bush_heating_0.png

Warmer snow surface temperature above a buried bush. Click here to download.

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fidelity_pan1.png

The snow surface on the southwest facing slopes of Mt. Smart are warmer than the surface on the northwest facing slopes. PM photo.

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rock2_composite_0.png

A large temperature gradient exists in the thin snowpack above a rock. The snow is coarse grained depth hoar near the rock.

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tree_heat_radius_0.png

Long wave radiation from the tree has warmed the snow surface near the tree

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ir_0069.jpg

Long wave radiation from the tree has warmed the snow surface near the tree.

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ir_0079.jpg

The bed surface and lower slab are cooler than the slab. ~ 10 minutes after the avalanche

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5min_old_avalanche_0.png

IR image of a crown fracture shows the temperature gradient in the slab. (Image taken ~5 min after avalanche)

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buriedrockvosual_dc_1078_0_edited.jpg

This photo of the buried rock that goes with three IR photos.

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rock_composite_0.png

A large temperature gradient exists in the depth hoar above a buried rock.

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warm_ski_tracks_1.png

The compressed snow under the ski tracks has conducted heat to the surface more than the uncompressed snow.

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irpitwallrectangles.jpg

IR image of a pit wall ~1 minute after shovelling, showing a cool layer sandwiched between two warmer layers

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ir_subsurface-warming3326_2_edited.jpg

Incoming short wave and strong outgoing low wave to a clear sky lead to max warming several cm below the snow surface

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Snow Avalanche Archive, updated April 2024.

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