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28 December 2020

Nangpa La and Nup La, Mount Everest Region are snow free through December 2020

Nangpa La (NPL) and Nup La  (NL)  in Landsat images from 10-13-2020 and 12-16-2020, CO=Cho Oyu Peak and purple dots indicate the snowline. Both passes can be crossed without traversing snow on December 16. The winter monsoon for the Nepal Himalaya is a dry cold period with limited precipitation or new snow accumulation.  Mount Everest region glaciers are summer accumulation type glaciers with ~75% of annual precipitation occurring during the …

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26 January 2016

Where is the snow at Nup La, 5850 m, West Rongbuk Glacier?

Landsat image from January 4, 2016 indicating the actual Nup La (N).  Purples dots is the snowline. Green arrows are expanding bedrock exposures and pink arrow a specific rock know amidst the glacier. Nup La at 5850 m is on the Nepal-China border and is the divide between the West Rongbuk Glacier and the Ngozumpa Glacier.  The pass should be part of the accumulation zone of both glaciers.  In recent …

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