In situ measurements of snow accumulation in the Amundsen Sea Embayment during 2016

被引：3

作者：

Johnson, Joanne S. ^{[1
]}

O'Donnell, John P. ^{[2
]}

Thomas, Elizabeth R. ^{[1
]}

机构：

[1] NERC, British Antarctic Survey, Madingley Rd, Cambridge CB3 0ET, England

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

来源：

ANTARCTIC SCIENCE | 2018年 / 30卷 / 03期

关键词：

ERA-interim re-analysis; grounding line; ice sheet; Pine Island Glacier; Thwaites Glacier; PINE ISLAND GLACIER; ANTARCTIC ICE-SHEET; WEST ANTARCTICA; THWAITES GLACIER;

D O I：

10.1017/S0954102018000068

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Measurements of snow accumulation are critical for reliable prediction of future ice mass loss and hence projections of sea level change. However, there are currently very few published in situ measurements of snow accumulation in the Pine Island-Thwaites glacier catchment of the Amundsen Sea Embayment, and none from low elevation sites west of 100.77 degrees longitude. Here measurements of snow accumulation over an 11 month period in 2016 are reported for six sites in the Pine Island-Thwaites glacier catchment. The average accumulation rates of 0.10 +/- 0.01 to 1.26 +/- 0.22 m w.c. yr(-1) are comparable with those derived from airborne radar for the period 1985 2009, suggesting very high rates of snowfall, particularly in the vicinity of the grounding line.

引用

页码：197 / 203

页数：7

共 21 条

[1] Spatial and temporal variability in snow accumulation at the West Antarctic Ice Sheet Divide over recent centuries [J].

Banta, J. Ryan ;

McConnell, Joseph R. ;

Frey, Markus M. ;

Bales, Roger C. ;

Taylor, Kendrick .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2008, 113 (D23)

[2] An observed negative trend in West Antarctic accumulation rates from 1975 to 2010: Evidence from new observed and simulated records [J].

Burgener, Landon ;

Rupper, Summer ;

Koenig, Lora ;

Forster, Rick ;

Christensen, William F. ;

Williams, Jessica ;

Koutnik, Michelle ;

Miege, Clement ;

Steig, Eric J. ;

Tingey, David ;

Keeler, Durban ;

Riley, Laura .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2013, 118 (10) :4205-4216

[3] Contribution of Antarctica to past and future sea-level rise [J].

DeConto, Robert M. ;

Pollard, David .

NATURE, 2016, 531 (7596) :591-597

[4] The ERA-Interim reanalysis: configuration and performance of the data assimilation system [J].

Dee, D. P. ;

Uppala, S. M. ;

Simmons, A. J. ;

Berrisford, P. ;

Poli, P. ;

Kobayashi, S. ;

Andrae, U. ;

Balmaseda, M. A. ;

Balsamo, G. ;

Bauer, P. ;

Bechtold, P. ;

Beljaars, A. C. M. ;

van de Berg, L. ;

Bidlot, J. ;

Bormann, N. ;

Delsol, C. ;

Dragani, R. ;

Fuentes, M. ;

Geer, A. J. ;

Haimberger, L. ;

Healy, S. B. ;

Hersbach, H. ;

Holm, E. V. ;

Isaksen, L. ;

Kallberg, P. ;

Koehler, M. ;

Matricardi, M. ;

McNally, A. P. ;

Monge-Sanz, B. M. ;

Morcrette, J. -J. ;

Park, B. -K. ;

Peubey, C. ;

de Rosnay, P. ;

Tavolato, C. ;

Thepaut, J. -N. ;

Vitart, F. .

QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, 2011, 137 (656) :553-597

[5]

Jacobs SS, 2011, NAT GEOSCI, V4, P519, DOI [10.1038/ngeo1188, 10.1038/NGEO1188]

[6] Marine Ice Sheet Collapse Potentially Under Way for the Thwaites Glacier Basin, West Antarctica [J].

Joughin, Ian ;

Smith, Benjamin E. ;

Medley, Brooke .

SCIENCE, 2014, 344 (6185) :735-738

[7] Climate variability in West Antarctica derived from annual accumulation-rate records from ITASE firn/ice cores [J].

Kaspari, S ;

Mayewski, PA ;

Dixon, DA ;

Spikes, VB ;

Sneed, SB ;

Handley, MJ ;

Hamilton, GS .

ANNALS OF GLACIOLOGY, VOL 39, 2004, 2004, 39 :585-594

[8] Climate and surface mass balance of coastal West Antarctica resolved by regional climate modelling [J].

Lenaerts, Jan T. M. ;

Ligtenberg, Stefan R. M. ;

Medley, Brooke ;

Van de Berg, Willem Jan ;

Konrad, Hannes ;

Nicolas, Julien P. ;

Van Wessem, J. Melchior ;

Trusel, Luke D. ;

Mulvaney, Robert ;

Tuckwell, Rebecca J. ;

Hogg, Anna E. ;

Thomas, Elizabeth R. .

ANNALS OF GLACIOLOGY, 2018, 59 (76) :29-41

[9] Constraining the recent mass balance of Pine Island and Thwaites glaciers, West Antarctica, with airborne observations of snow accumulation [J].

Medley, B. ;

Joughin, I. ;

Smith, B. E. ;

Das, S. B. ;

Steig, E. J. ;

Conway, H. ;

Gogineni, S. ;

Lewis, C. ;

Criscitiello, A. S. ;

McConnell, J. R. ;

van den Broeke, M. R. ;

Lenaerts, J. T. M. ;

Bromwich, D. H. ;

Nicolas, J. P. ;

Leuschen, C. .

CRYOSPHERE, 2014, 8 (04) :1375-1392

[10] Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models [J].