Insignificant change in Antarctic snowmelt volume since 1979

被引：59

作者：

Munneke, P. Kuipers ^{[1
]}

Picard, G. ^{[2
]}

van den Broeke, M. R. ^{[1
]}

Lenaerts, J. T. M. ^{[1
]}

van Meijgaard, E. ^{[3
]}

机构：

[1] Univ Utrecht, Inst Marine & Atmospher Res, NL-3508 TA Utrecht, Netherlands

[2] CNRS UJF, Lab Glaciol & Geophys Environm, F-38402 St Martin Dheres, France

[3] Royal Netherlands Meteorol Inst, NL-3730 AE De Bilt, Netherlands

来源：

GEOPHYSICAL RESEARCH LETTERS | 2012年 / 39卷

关键词：

MICROWAVE RADIOMETERS; ICE SHELVES; CLIMATE; PENINSULA; VARIABILITY; SENSORS; TRENDS; MELT;

D O I：

10.1029/2011GL050207

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Surface snowmelt is widespread in coastal Antarctica. Satellite-based microwave sensors have been observing melt area and duration for over three decades. However, these observations do not reveal the total volume of meltwater produced on the ice sheet. Here we present an Antarctic melt volume climatology for the period 1979-2010, obtained using a regional climate model equipped with realistic snow physics. We find that mean continent-wide meltwater volume (1979-2010) amounts to 89 Gt y(-1) with large interannual variability (sigma = 41 Gt y(-1)). Of this amount, 57 Gt y(-1) (64%) is produced on the floating ice shelves extending from the grounded ice sheet, and 71 Gt y(-1) in West-Antarctica, including the Antarctic Peninsula. We find no statistically significant trend in either continent-wide or regional meltwater volume for the 31-year period 1979-2010. Citation: Kuipers Munneke, P., G. Picard, M. R. van den Broeke, J. T. M. Lenaerts, and E. van Meijgaard (2012), Insignificant change in Antarctic snowmelt volume since 1979, Geophys. Res. Lett., 39, L01501, doi: 10.1029/2011GL050207.

引用

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