Northeast sector of the Greenland Ice Sheet to undergo the greatest inland expansion of supraglacial lakes during the 21st century

被引：43

作者：

Igneczi, Adam ^{[1
]}

Sole, Andrew J. ^{[1
]}

Livingstone, Stephen J. ^{[1
]}

Leeson, Amber A. ^{[2
]}

Fettweis, Xavier ^{[3
]}

Selmes, Nick ^{[4
]}

Gourmelen, Noel ^{[5
]}

Briggs, Kate ^{[6
]}

机构：

[1] Univ Sheffield, Dept Geog, Sheffield, S Yorkshire, England

[2] Univ Lancaster, Lancaster Environm Ctr, Data Sci Inst, Lancaster, England

[3] Univ Liege, Dept Geog, Liege, Belgium

[4] Plymouth Marine Lab, Plymouth, Devon, England

[5] Univ Edinburgh, Sch Geosci, Edinburgh, Midlothian, Scotland

[6] Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2016年 / 43卷 / 18期

关键词：

WEST GREENLAND; SEASONAL EVOLUTION; SURFACE; ACCELERATION; MELT; GLACIER; FLOW; DRAINAGE; MARGIN;

D O I：

10.1002/2016GL070338

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The formation and rapid drainage of supraglacial lakes (SGL) influences the mass balance and dynamics of the Greenland Ice Sheet (GrIS). Although SGLs are expected to spread inland during the 21st century due to atmospheric warming, less is known about their future spatial distribution and volume. We use GrIS surface elevation model and regional climate model outputs to show that at the end of the 21st century (2070-2099) approximately 9.8 +/- 3.9 km(3) (+113% compared to 1980-2009) and 12.6 +/- 5 km(3) (+174%) of meltwater could be stored in SGLs under moderate and high representative concentration pathways (RCP 4.5 and 8.5), respectively. The largest increase is expected in the northeastern sector of the GrIS (191% in RCP 4.5 and 320% in RCP 8.5), whereas in west Greenland, where the most SGLs are currently observed, the future increase will be relatively moderate (55% in RCP 4.5 and 68% in RCP 8.5).

引用

页码：9729 / 9738

页数：10

共 37 条

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