“. . . Warming in this Third Pole is happening at roughly double the global rate and has been especially pronounced over the past 60 years. This century is becoming the warmest period in these high mountains in 2,000 years, making the region an important ground for research in the effort to avert climate disaster.
This year, a comprehensive climate assessment for the Third Pole warned that two-thirds of the present mass of the glaciers in the region around Everest could disappear by the year 2100. Yet as the assessment noted, there are significant “knowledge gaps” in climatic data coming from the region. This is particularly true in high-altitude environments where the annual snows collect atop the region’s myriad glaciers.”
“. . . . New discoveries from our undertaking and from others are yielding an astonishing picture of a landscape in flux.
For instance: An ice core extracted at an altitude above 26,000 feet from the South Col, Everest’s highest glacier, showed that the ice at the surface was approximately 2,000 years old, meaning that ice that had accumulated afterward, which might have risen to a height of 180 feet, had vanished. Mountaineers on Everest also appear to have taken a heavy toll. Snow samples revealed the presence of microplastics nearly all the way up the mountain, and snow and water samples from Everest were laden with PFAS, long-lasting chemicals widely used by a range of industries and in consumer products.”