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Ice Sheets and Sea Level: Thinking Outside the Box

机译:冰盖和海平面:跳出框框思考

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摘要

Until quite recently, the mass balance (MB) of the great ice sheets of Greenland and Antarctica was poorly known and often treated as a residual in the budget of oceanic mass and sea level change. Recent developments in regional climate modelling and remote sensing, especially altimetry, gravimetry and InSAR feature tracking, have enabled us to specifically resolve the ice sheet mass balance components at a near-annual timescale. The results reveal significant mass losses for both ice sheets, caused by the acceleration of marine-terminating glaciers in southeast, west and northwest Greenland and coastal West Antarctica, and increased run-off in Greenland. At the same time, the data show that interannual variability is very significant, masking the underlying trends.
机译:直到最近,格陵兰和南极大冰盖的质量平衡(MB)鲜为人知,并且经常被视为海洋质量和海平面变化预算中的剩余物。区域气候建模和遥感技术的最新发展,尤其是测高,重力法和InSAR特征跟踪,使我们能够在接近每年的时间尺度上专门解决冰盖质量平衡分量。结果表明,由于格陵兰东南部,西部和西北部的海洋终止冰川的加速以及南极西部沿海地区的冰川终止,以及格陵兰的径流增加,这两种冰盖均存在大量质量损失。同时,数据显示年际变化非常显着,掩盖了潜在趋势。

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