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2100年格陵兰冰盖融化可能导致海平面上升约18cm 快报文章
资源环境快报,2020年第24期
作者:  董利苹
Microsoft Word(14Kb)  |  收藏  |  浏览/下载:471/0  |  提交时间:2020/12/31
Greenland Ice Sheet  Sea Level Rise  CMIP6  Regional Climate Models  
PNAS研究分析北极海冰的自然变化趋势 快报文章
资源环境快报,2020年第20期
作者:  王立伟
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Arctic  sea ice  ocean warming  
ISMIP6分析南极和格陵兰冰盖对未来海平面的贡献 快报文章
气候变化快报,2020年第19期
作者:  刘燕飞
Microsoft Word(15Kb)  |  收藏  |  浏览/下载:418/0  |  提交时间:2020/09/29
Greenland  Antarctica  Ice Sheet  Sea-level Rise  Mass Loss  Ensemble  Representative Concentration Pathway  
南北极冰盖损失正在沿最严重的气候预估情景发展 快报文章
气候变化快报,2020年第18期
作者:  刘燕飞
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Ice-sheet loss  Sea-level rise  IPCC  Antarctica  Greenland  
北极地区水下热团将加速海冰融化 快报文章
资源环境快报,2020年第17期
作者:  吴秀平
Microsoft Word(15Kb)  |  收藏  |  浏览/下载:362/2  |  提交时间:2020/09/15
North Pole  underwater heat blob  Sea ice demise  
末次间冰期模拟支持2035年北极没有海冰的预测 快报文章
气候变化快报,2020年第17期
作者:  刘燕飞
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Climate Simulation  Coupled Model  Arctic sea ice  Last Interglacial(LIG)  
Ice retreat in Wilkes Basin of East Antarctica during a warm interglacial 期刊论文
NATURE, 2020, 583 (7817) : 554-+
作者:  T. Blackburn;  G. H. Edwards;  S. Tulaczyk;  M. Scudder;  G. Piccione;  B. Hallet;  N. McLean;  J. C. Zachos;  B. Cheney;  J. T. Babbe
收藏  |  浏览/下载:19/0  |  提交时间:2020/08/09

Uranium isotopes in subglacial precipitates from the Wilkes Basin of the East Antarctic Ice Sheet reveal ice retreat during a warm Pleistocene interglacial period about 400,000 years ago.


Efforts to improve sea level forecasting on a warming planet have focused on determining the temperature, sea level and extent of polar ice sheets during Earth'  s past interglacial warm periods(1-3). About 400,000 years ago, during the interglacial period known as Marine Isotopic Stage 11 (MIS11), the global temperature was 1 to 2 degrees Celsius greater(2)and sea level was 6 to 13 metres higher(1,3). Sea level estimates in excess of about 10 metres, however, have been discounted because these require a contribution from the East Antarctic Ice Sheet(3), which has been argued to have remained stable for millions of years before and includes MIS11(4,5). Here we show how the evolution of(234)U enrichment within the subglacial waters of East Antarctica recorded the ice sheet'  s response to MIS11 warming. Within the Wilkes Basin, subglacial chemical precipitates of opal and calcite record accumulation of(234)U (the product of rock-water contact within an isolated subglacial reservoir) up to 20 times higher than that found in marine waters. The timescales of(234)U enrichment place the inception of this reservoir at MIS11. Informed by the(234)U cycling observed in the Laurentide Ice Sheet, where(234)U accumulated during periods of ice stability(6)and was flushed to global oceans in response to deglaciation(7), we interpret our East Antarctic dataset to represent ice loss within the Wilkes Basin at MIS11. The(234)U accumulation within the Wilkes Basin is also observed in the McMurdo Dry Valleys brines(8-10), indicating(11)that the brine originated beneath the adjacent East Antarctic Ice Sheet. The marine origin of brine salts(10)and bacteria(12)implies that MIS11 ice loss was coupled with marine flooding. Collectively, these data indicate that during one of the warmest Pleistocene interglacials, the ice sheet margin at the Wilkes Basin retreated to near the precipitate location, about 700 kilometres inland from the current position of the ice margin, which-assuming current ice volumes-would have contributed about 3 to 4 metres(13)to global sea levels.


  
南极海冰的反馈提高了海洋的二氧化碳固存能力 快报文章
气候变化快报,2020年第14期
作者:  董利苹
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Southern Ocean  Sea-ice Feedbacks  Carbon Sink  
Prolonged Periodicity and Eastward Shift of the January North Pacific Oscillation Since the Mid-1990s and Its Linkage With Sea Ice Anomalies in the Barents Sea 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (13)
作者:  Xu, Zhiqing;  Fan, Ke
收藏  |  浏览/下载:10/0  |  提交时间:2020/08/18
January North Pacific Oscillation  prolonged periodicity  eastward shift  sea ice anomalies in the Barents Sea  the mid-1990s  
新研究解释了南极海冰流失的原因 快报文章
资源环境快报,2020年第13期
作者:  薛明媚,王金平
Microsoft Word(13Kb)  |  收藏  |  浏览/下载:512/0  |  提交时间:2020/07/15
Antarctic sea ice  loss  explained