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Snow mass estimates now more reliable

Snow mass. Credit: Pexels.com Estimating the amount of seasonal snow is important for understanding the water cycle and Earth’s climate system, but establishing a clear and coherent picture of change has proven difficult. New research from ESA’s Climate Change Initiative has helped to produce the first reliable estimate of snow mass change and has helped to identify different continental trends.

Warming surface temperatures are known to have driven substantial reductions in the extent and duration of northern hemisphere snow cover. Equally important, but much less well understood is snow mass—the amount of water held in the snow pack—and how it has changed over time.

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Millions of people rely on snow meltwaters for power, irrigation and drinking water. More accurate snow mass information would not only help to assess the availability of freshwater resources and identify flood risk, but also enable the better assessment of the role seasonal snow plays in the climate system.

In a new paper, published in Nature , researchers from the Finnish Meteorological Institute (FMI) and the Environment and Climate Change Canada, working as part of ESA’s Climate Change Initiative, have reliably estimated the amount of annual snow mass and changes in snow cover in the northern hemisphere between […]

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