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Glaciers in Western North America Mass Loss Geospatial Data (2021-2024)
doi: 10.21966/p6jv-pe95
Les glaciers sont des éléments essentiels du paysage montagneux, revêtant une grande valeur culturelle et touristique, et ils fournissent de l'eau fraîche et abondante à de nombreux cours d'eau d'amont à la fin de l'été et pendant les années de sécheresse. Nous rendons compte des taux de perte de masse dans l'ouest du Canada et dans les glaciers américains limitrophes. Au cours de la période 2021-2024, les glaciers des deux régions ont connu un doublement de leur taux de fonte par rapport à la décennie précédente. Les glaciers ont perdu 12 % de leur volume total en 2020 au cours de cette période de quatre ans. Les conditions qui ont favorisé une forte perte de masse comprenaient des conditions chaudes et sèches et un assombrissement de la surface de la neige et de la glace.
Glaciers are essential parts of the mountain landscape, with strong cultural and tourism value, and they provide cool, plentiful water to many headwater streams during late summer and years of drought. We report on rates of mass loss for western Canada and the conterminous US glaciers. Over the period 2021-2024, glaciers in both regions experienced a doubling of melt rates compared to the previous decade. Glaciers lost 12% of their total 2020 volume over this four-year period. Conditions that favored strong mass loss included warm dry conditions and surface darkening of snow and ice.
LiDAR, Snow, Climate Change, Glacier
LiDAR, Snow, Climate Change, Glacier
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