【特稿】研究：气候变暖或导致全球冰川年均减少2000到4000处

Core Insights - A recent study published in Nature Climate Change indicates that if climate change is not effectively addressed, global glaciers could see an annual reduction of 2,000 to 4,000 by the 2040s, accelerating from the current average of 1,000 per year [1][2] Group 1: Glacier Reduction Projections - If global average temperatures rise by 1.5 degrees Celsius above pre-industrial levels, a peak in glacier melting is expected around 2041, with an average annual loss of 2,000 glaciers, leading to a total of approximately 96,000 glaciers remaining by the end of the century, more than a 50% reduction from current levels [1] - Should temperatures increase by 2.7 degrees Celsius, glacier loss will peak between 2040 and 2060, averaging about 3,000 glaciers lost annually, resulting in only about 44,000 glaciers remaining by the century's end, which is one-fifth of the current number [1] - At a projected 4 degrees Celsius increase, the peak glacier loss is anticipated around 2055, with an average of 4,000 glaciers disappearing each year, leaving only about 18,000 glaciers, or 9% of the current total, by the end of the century [1] Group 2: Implications of Glacier Loss - The study emphasizes that while the focus is often on the volume and area of glaciers, the number of glaciers is crucial, particularly for local populations and economies dependent on them [2] - Glacier melting could adversely affect winter tourism economies, as many ski resorts rely on glacier landscapes that attract tourists [2] - Glaciers also hold significant historical, cultural, and symbolic value in various regions, and even small glaciers provide essential meltwater for local communities [2]