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
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
收藏
页数:5
相关论文
共 21 条
[1]   Climate of the Greenland ice sheet using a high-resolution climate model - Part 1: Evaluation [J].
Ettema, J. ;
van den Broeke, M. R. ;
van Meijgaard, E. ;
van de Berg, W. J. ;
Box, J. E. ;
Steffen, K. .
CRYOSPHERE, 2010, 4 (04) :511-527
[2]   Melting trends over the Greenland ice sheet (1958-2009) from spaceborne microwave data and regional climate models [J].
Fettweis, X. ;
Tedesco, M. ;
van den Broeke, M. ;
Ettema, J. .
CRYOSPHERE, 2011, 5 (02) :359-375
[3]   Elevation changes in Antarctica mainly determined by accumulation variability [J].
Helsen, Michiel M. ;
van den Broeke, Michiel R. ;
van de Wal, Roderik S. W. ;
van de Berg, Willem Jan ;
van Meijgaard, Erik ;
Davis, Curt H. ;
Li, Yonghong ;
Goodwin, Ian .
SCIENCE, 2008, 320 (5883) :1626-1629
[4]   Spatiotemporal variations of snowmelt in Antarctica derived from satellite scanning multichannel microwave radiometer and Special Sensor Microwave Imager data (1978-2004) [J].
Liu, HX ;
Wang, L ;
Jezek, KC .
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, 2006, 111 (F1)
[5]   Recent variability and trends of Antarctic near-surface temperature [J].
Monaghan, Andrew J. ;
Bromwich, David H. ;
Chapman, William ;
Comiso, Josefino C. .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2008, 113 (D4)
[6]   A new albedo parameterization for use in climate models over the Antarctic ice sheet [J].
Munneke, P. Kuipers ;
van den Broeke, M. R. ;
Lenaerts, J. T. M. ;
Flanner, M. G. ;
Gardner, A. S. ;
van de Berg, W. J. .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2011, 116
[7]   Surface melting derived from microwave radiometers: a climatic indicator in Antarctica [J].
Picard, G. ;
Fily, M. ;
Gallee, H. .
ANNALS OF GLACIOLOGY, VOL 46, 2007, 2007, 46 :29-+
[8]   Surface melting observations in Antarctica by microwave radiometers: Correcting 26-year time series from changes in acquisition hours [J].
Picard, G. ;
Fily, M. .
REMOTE SENSING OF ENVIRONMENT, 2006, 104 (03) :325-336
[9]   SURFACE MELTING ON ANTARCTIC PENINSULA ICE SHELVES DETECTED BY PASSIVE MICROWAVE SENSORS [J].
RIDLEY, J .
GEOPHYSICAL RESEARCH LETTERS, 1993, 20 (23) :2639-2642
[10]   The link between climate warming and break-up of ice shelves in the Antarctic Peninsula [J].
Scambos, TA ;
Hulbe, C ;
Fahnestock, M ;
Bohlander, J .
JOURNAL OF GLACIOLOGY, 2000, 46 (154) :516-530