Recent loss of floating ice and the consequent sea level contribution

被引：74

作者：

Shepherd, Andrew ^{[1
]}

Wingham, Duncan ^{[2
]}

Wallis, David ^{[2
]}

Giles, Katharine ^{[2
]}

Laxon, Seymour ^{[2
]}

Sundal, Aud Venke ^{[1
]}

机构：

[1] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England

[2] UCL, Dept Earth Sci, London WC1E 6BT, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2010年 / 37卷

关键词：

SHELF; THICKNESS; CLIMATE;

D O I：

10.1029/2010GL042496

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We combine new and published satellite observations and the results of a coupled ice-ocean model to provide the first estimate of changes in the quantity of ice floating in the global oceans and the consequent sea level contribution. Rapid losses of Arctic sea ice and small Antarctic ice shelves are partially offset by thickening of Antarctic sea ice and large Antarctic ice shelves. Altogether, 746 +/- 127 km(3) yr(-1) of floating ice was lost between 1994 and 2004, a value that exceeds considerably the reduction in grounded ice over the same period. Although the losses are equivalent to a small (49 +/- 8 mm yr(-1)) rise in mean sea level, there may be large regional variations in the degree of ocean freshening and mixing. Ice shelves at the Antarctic Peninsula and in the Amundsen Sea, for example, have lost 481 +/- 38 km(3) yr(-1). Citation: Shepherd, A., D. Wingham, D. Wallis, K. Giles, S. Laxon, and A. V. Sundal (2010), Recent loss of floating ice and the consequent sea level contribution, Geophys. Res. Lett., 37, L13503, doi:10.1029/2010GL042496.

引用

页数：5

共 31 条

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