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4 October 2021

Blackfoot and Jackson Glacier, Montana Lack Accumulation Zone in 2021

Jackson and Blackfoot Glacier in late August and early September Sentinel 2 false color images. Point A indicates exposed ice showing annual layers. Point B indicates exposed firn that had been retained through previous summers. The gray color of the firn indicates how dirty it is and that its albedo would enhance melting.  The yellow arrow indicates the one patch of retained snow in 2021 on Blackfoot Glacier with no …

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