Insights from the first winter weather observations near Mount Everest's summit
Sherpa, Tenzing Chogyal ; Matthews, Tom ; Perry, L. Baker ; Thapa, Amrit ; Singh, Praveen Kumar ; Khadka, Arbindra ; Koch, Inka ; Pelto, Mauri ; Panday, Prajjwal ; Aryal, Deepak ; Shrestha, Dibas ; Kang, Shichang ; Mayewski, Paul Andrew
The highest reaches of our planet experience some of the most extreme weather on Earth and hold very significant supplies of freshwater for communities downstream. However, we know very little of the meteorological detail about this high-altitude frontier. We address this here with new winter weather observations from the upper reaches of Mount Everest (2019-2021). We show that substantial sublimation rates are possible, with losses up to 2.5mm day?1. Wind chill plunging to ?83°C and frostbite possible in less than one minute also attest to the severe cold stress facing mountaineers attempting winter ascents of this most iconic peak.</p>
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