A possible change in mass balance of Greenland and Antarctic ice sheets in the coming century
A possible change in mass balance of Greenland and Antarctic ice sheets in the coming century
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下个世纪格陵兰岛和南极冰盖的质量平衡可能发生变化
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
L. Bengtsson
中科院分区：
文献类型：
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作者：
A. Ohmura;M. Wild;L. Bengtsson
摘要高分辨率的大气环流模式可以高精度地模拟高纬度地区的降水和地表能量平衡。这为研究极地冰川未来的物质平衡及其对海平面的影响开辟了新的可能性。利用水平分辨率为TI 06的ECHAM 3大气环流模式对格陵兰和南极冰盖的表面物质平衡进行了模拟。利用该模式，根据ECHAM 1/T21瞬态实验提供的边界条件，对当前和二氧化碳倍增条件进行了两次5年积分。对格陵兰岛和南极洲两个实验的比较表明，气候变化对世界上两个最大冰川的物质平衡的影响可能有多大程度的不同。在格陵兰岛上，人们可以看到堆积量略有减少，融化量大幅增加，而在南极洲，预计堆积量将大幅增加，但不会融化。将质量平衡转化为海平面当量。格林兰
Abstract A high-resolution GCM is found to simulate precipitation and surface energy balance of high latitudes with high accuracy. This opens new possibilities to investigate the future mass balance of polar glaciers and its effect on sea level. The surface mass balance of the Greenland and the Antarctic ice sheets is simulated using the ECHAM3 GCM with TI06 horizontal resolution. With this model, two 5-year integrations for the present and doubled carbon dioxide conditions based on the boundary conditions provided by the ECHAM1/T21 transient experiment have been conducted. A comparison of the two experiments over Greenland and Antarctica shows to what extent the effect of climate change on the mass balance on the two largest glaciers of the world can differ. On Greenland one sees a slight decrease in accumulation and a substantial increase in melt, while on Antarctica a large increase in accumulation without melt is projected. Translating the mass balances into terms of sea-level equivalent. the Greenlan...