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DOI | 10.1088/1748-9326/aaf2ed |
Global sea-level contribution from Arctic land ice: 1971-2017 | |
Box, Jason E.1; 39;Neel, Shad2 | |
2018-12-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
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ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Denmark; Netherlands; Canada; USA; Norway; Chile |
英文摘要 | The Arctic Monitoring and Assessment Program (AMAP2017) report identifies the Arctic as the largest regional source of land ice to global sea-level rise in the 2003-2014 period. Yet, this contextualization ignores the longer perspective from in situ records of glacier mass balance. Here, using 17 (>55 degrees N latitude) glacier and ice capmass balance series in the 1971-2017 period, we develop a semi-empirical estimate of annual sea-level contribution from seven Arctic regions by scaling the in situ records to GRACE averages. We contend that our estimate represents the most accurate Arctic land ice mass balance assessment so far available before the 1992 start of satellite altimetry. We estimate the 1971-2017 eustatic sea-level contribution from land ice north of similar to 55 degrees N to be 23.0 +/- 12.3 mm sea-level equivalent (SLE). In all regions, the cumulative sea-level rise curves exhibit an acceleration, starting especially after 1988. Greenland is the source of 46% of the Arctic sea-level rise contribution (10.6 +/- 7.3mm), followed by Alaska (5.7 +/- 2.2mm), Arctic Canada (3.2 +/- 0.7mm) and the Russian High Arctic (1.5 +/- 0.4mm). Our annual results exhibit co-variability over a 43 year overlap (1971-2013) with the alternative dataset of Marzeion et al (2015 Cryosphere 9 2399-404) (M15). However, we find a 1.36 x lower sea-level contribution, in agreement with satellite gravimetry. The IPCC Fifth Assessment report identified constraining the pre-satellite era sea-level budget as a topic of low scientific understanding that we address and specify sea-level contributions coinciding with IPCC Special Report on the Ocean and Cryosphere in a Changing Climate (SROCC) 'present day' (2005-2015) and 'recent past' (1986-2005) reference periods. We assess an Arctic land ice loss of 8.3 mm SLE during the recent past and 12.4mm SLE during the present day. The seven regional sea-level rise contribution time series of this study are available from AMAP.no. |
英文关键词 | sea-level land ice mass-balance glaciology climatology climate change |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454316600001 |
WOS关键词 | AXEL-HEIBERG ISLAND ; GLACIER MASS CHANGE ; WHITE GLACIER ; CLIMATE ; BALANCE ; RISE ; SHEET ; SVALBARD ; DRIVEN ; CANADA |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/30961 |
专题 | 气候变化 |
作者单位 | 1.Geol Survey Denmark & Greenland GEUS, Copenhagen, Denmark; 2.Univ Utrecht, Inst Marine & Atmospher Res, Utrecht, Netherlands; 3.Delft Univ Technol, Fac Civil Engn & Geosci, Delft, Netherlands; 4.Nat Resources Canada, Ottawa, ON, Canada; 5.US Geol Survey, Alaska Sci Ctr, Anchorage, AK USA; 6.Queens Univ, Dept Geog & Planning, Kingston, ON, Canada; 7.Nansen Environm & Remote Sensing Ctr, Bergen, Norway; 8.Western Norway Univ Appl Sci, Dept Environm Sci, Sogndal, Norway; 9.Univ Magallanes, Direct Antarctic & Subantarctic Programs, Punta Arenas, Chile |
推荐引用方式 GB/T 7714 | Box, Jason E.,39;Neel, Shad. Global sea-level contribution from Arctic land ice: 1971-2017[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(12). |
APA | Box, Jason E.,&39;Neel, Shad.(2018).Global sea-level contribution from Arctic land ice: 1971-2017.ENVIRONMENTAL RESEARCH LETTERS,13(12). |
MLA | Box, Jason E.,et al."Global sea-level contribution from Arctic land ice: 1971-2017".ENVIRONMENTAL RESEARCH LETTERS 13.12(2018). |
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