Greenland ice sheet motion insensitive to exceptional meltwater forcing

Proceedings of the National Academy of Sciences of the United States of America

Volumn 110, Issue 49, 2013, Pages 19719-19724

  Tedstone, Andrew J ^a   Nienow, Peter W ^a   Bartholomew, Ian D ^a   Sole, Andrew J ^a,b   Cowton, Thomas R ^a,b   Mair, Douglas W F ^c   King, Matt A ^d,e  

^a UNIVERSITY OF EDINBURGH   (United Kingdom)

^b UNIVERSITY OF SHEFFIELD   (United Kingdom)

^c UNIVERSITY OF ABERDEEN   (United Kingdom)

^d UNIVERSITY OF TASMANIA   (Australia)

^e NEWCASTLE UNIVERSITY   (United Kingdom)

Author keywords

Global positioning systems; Ice sheet dynamics; Ice sheet hydrology; Ice sheet melt

Indexed keywords

RUNOFF;

ACCELERATION; AIR TEMPERATURE; ARTICLE; CATCHMENT; GLACIER; GLOBAL POSITIONING SYSTEM; GREENLAND; HYDROLOGY; ICE SHEET; MELTING POINT; MOTION; PRIORITY JOURNAL; SEA LEVEL RISE; SENSOR; SUMMER; SURFACE PROPERTY; TEMPERATURE; VELOCITY; WARMING; WINTER;

GLOBAL POSITIONING SYSTEMS; ICE SHEET DYNAMICS; ICE SHEET HYDROLOGY; ICE SHEET MELT;

CLIMATE; FRESH WATER; GEOGRAPHIC INFORMATION SYSTEMS; GREENLAND; HYDROLOGY; ICE COVER; WATER MOVEMENTS;

EID: 84889687747     PISSN: 00278424     EISSN: 10916490     Source Type: Journal    
DOI: 10.1073/pnas.1315843110     Document Type: Article

References (30)

1. Rignot E, Velicogna I, van den Broeke MR, Monaghan A, Lenaerts J (2011) Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise. Geophys Res Lett 38:1-5
2. Shepherd A, et al. (2012) A reconciled estimate of ice-sheet mass balance. Science 338(6111):1183-1189
3. Sasgen I, et al. (2012) Timing and origin of recent regional ice-mass loss in Greenland. Earth Planet Sci Lett 333:293-303
4. Hanna E, et al. (2011) Greenland ice sheet surface mass balance 1870 to 2010 based on twentieth century reanalysis, and links with global climate forcing. J Geophys Res 116:D24121
5. Hanna E, Mernild SH, Cappelen J, Steffen K (2012) Recent warming in Greenland in a long-term instrumental (18812012) climatic context: 1. Evaluation of surface air temperature records. Environ Res Lett 7:045404
6. Fettweis X, Tedesco M, van den Broeke M, Ettema J (2011) Melting trends over the Greenland ice sheet (1958-2009) from spaceborne microwave data and regional climate models. Cryosphere 5:359-375
7. Pritchard HD, Arthern RJ, Vaughan DG, Edwards LA (2009) Extensive dynamic thinning on the margins of the Greenland and Antarctic ice sheets. Nature 461(7266): 971-975
8. Zwally HJ, et al. (2002) Surface melt-induced acceleration of Greenland ice-sheet flow. Science 297(5579):218-222
9. Andersen ML, et al. (2010) Spatial and temporal melt variability at Helheim Glacier, East Greenland, and its effect on ice dynamics. J Geophys Res 115:F04041
10. Bartholomew I, et al. (2011) Seasonal variations in Greenland Ice Sheet motion: Inland extent and behaviour at higher elevations. Earth Planet Sci Lett 307:271-278
11. Sole AJ, et al. (2011) Seasonal speedup of a Greenland marine-terminating outlet glacier forced by surface melt-induced changes in subglacial hydrology. J Geophys Res 116:1-11
12. Bartholomew I, et al. (2012) Short-term variability in Greenland ice sheet motion forced by time-varying meltwater drainage: Implications for the relationship between subglacial drainage system behavior and ice velocity. J Geophys Res 117: F03002
13. Iken A, Bindschadler RA (1986) Combined measurements of subglacial water pressure and surface velocity of Findelengletscher, Switzerland: Conclusions about drainage system and sliding mechanism. J Glaciol 32:101-119
14. Bartholomew I, et al. (2010) Seasonal evolution of subglacial drainage and acceleration in a Greenland outlet glacier. Nat Geosci 3:408-411
15. Röthlisberger H, Lang H (1987) Glacial Hydrology. Glacio-Fluvial Sediment Transfer: An Alpine Perspective, eds Gurnell A, Clark M (John Wiley and Sons, Chichester, UK), pp 207-284
16. Cowton T, et al. (2013) Evolution of drainage system morphology at a land-terminating Greenland outlet glacier. J Geophys Res 118:29-41
17. Sundal AV, et al. (2011) Melt-induced speed-up of Greenland ice sheet offset by efficient subglacial drainage. Nature 469(7331):521-524
18. van de Wal RSW, et al. (2008) Large and rapid melt-induced velocity changes in the ablation zone of the Greenland Ice Sheet. Science 321(5885):111-113
19. Sole A, et al. (2013) Winter motion mediates dynamic response of the Greenland ice sheet to warmer summers. Geophys Res Lett 40:3940-3944
20. Nghiem SV, et al. (2012) The extreme melt across the Greenland ice sheet in 2012. Geophys Res Lett 39:L20502
21. Shannon SR, et al. (2013) Enhanced basal lubrication and the contribution of the Greenland ice sheet to future sea-level rise. Proc Natl Acad Sci USA 110(35): 14156-14161
22. Fettweis X, et al. (2013) Brief communication "Important role of the mid-tropospheric atmospheric circulation in the recent surface melt increase over the Greenland ice sheet". Cryosphere 7:241-248
23. Tedesco M, et al. (2013) Evidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data. Cryosphere 7:615-630
24. Bennartz R, et al. (2013) July 2012 Greenland melt extent enhanced by low-level liquid clouds. Nature 496(7443):83-86
25. Bartholomew I, et al. (2011) Supraglacial forcing of subglacial drainage in the ablation zone of the Greenland ice sheet. Geophys Res Lett 38:L08502
26. Schoof C (2010) Ice-sheet acceleration driven by melt supply variability. Nature 468(7325):803-806
27. Meehl G, et al. (2007) Global Climate Projections. Climate Change 2007: The Physical Science Basis. Contribution ofWorking Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, eds Solomon S, et al. (Cambridge University Press)
28. Chen G (1999) GPS kinematic positioning for the airborne laser altimetry at Long Valley, California. Ph.D. thesis (Massachusetts Institute of Technology)
29. Palmer S, Shepherd A, Nienow P, Joughin I (2011) Seasonal speedup of the Greenland Ice Sheet linked to routing of surface water. Earth Planet Sci Lett 302:423-428
30. Allen C (2011) IceBridge MCoRDS L2 ice thickness 2010 and 2011. Digital media http://nsidc.org/data/irmcr2.html