C029
Processes Controlling Near-Term Trends of Antarctic Mass Balance

Session ID#: 160919

Session Description:
Much glaciological and oceanographic evidence points to a complex future for Antarctic mass balance over the next 75 years, a critical period for society’s response and adaptation to sea level rise. Processes linked to ocean circulation and the delivery of ocean heat to Antarctica’s fringing ice shelves, ice shelf destabilisation and grounding line retreat, ice dynamics and changing precipitation patterns will all affect the rate and extent of grounded ice loss and ultimately global sea level rise. We welcome presentations on observational and model-based studies that explore and constrain the processes that will affect Antarctic Ice Sheet mass change in the near term and control the net ice flux of the major outlet glaciers.
Index Terms:

0726 Ice sheets [CRYOSPHERE]
0728 Ice shelves [CRYOSPHERE]
0762 Mass balance [CRYOSPHERE]
4532 General circulation [OCEANOGRAPHY: PHYSICAL]

Primary Convener:  Ted A Scambos, University of Colorado, Boulder, CIRES, Earth Science and Observation Center, Boulder, United States
Conveners:  Karen E Alley, University of Manitoba, Department of Environment and Geography, Winnipeg, MB, Canada, Paul Holland, British Antarctic Survey, Cambridge, United Kingdom and Mathieu Morlighem, University of California - Irvine, Department of Earth Sciences, Irvine, United States
Student/Early Career Convener:  Karen E Alley, University of Manitoba, Department of Environment and Geography, Winnipeg, MB, Canada
 
Subsurface warming of West Antarctic coastal waters linked to ENSO events (1052577)
Maurice Huguenin1,2, Ryan Holmes3,4, Paul Spence5,6 and Matthew H England2,7, (1)Climate Change Research Centre and ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, Australia, (2)ARC Australian Centre for Excellence in Antarctic Science, University of New South Wales, Sydney, NSW, Australia, (3)School of Geosciences, University of Sydney, Sydney, NSW, Australia, (4)ARC Centre of Excellence in Climate Extremes, University of New South Wales, Sydney, NSW, Australia, (5)Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia, (6)ARC Australian Centre for Excellence in Antarctic Science, University of Tasmania, Hobart, TAS, Australia, (7)Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia
 
Ocean variability beneath the Filchner-Ronne Ice Shelf inferred from basal melt rate time series (1056335)
Irena Vankova, Los Alamos National Laboratory, Los Alamos, United States and Keith W Nicholls, British Antarctic Survey, Cambridge, United Kingdom
 
Helicopter-based ocean observations capture broad ocean heat intrusions towards the Totten Ice Shelf (1064547)
Yoshihiro Nakayama1, Pat Wongpan2, Jamin Stevens Greenbaum3, Kaihe Yamazaki4, Tomohide Noguchi5, Daisuke Simizu6, Haruhiko Kashiwase7, Donald D Blankenship3, Takeshi Tamura8 and Shigeru Aoki1, (1)Hokkaido University, Sapporo, Japan, (2)Australian Antarctic Program Partnership, Hobart, Australia, (3)University of Texas, Institute for Geophysics, Austin, United States, (4)National Institute of Polar Research, Tokyo, Japan, (5)Marine Works Japan LTD., Yokosuka, Japan, (6)National Institute of Polar Research, Tachikawa, Japan, (7)National Institute of Technology, Tomakomai College, Sapporo, Japan, (8)NIPR National Institute of Polar Research, Tokyo, Japan
 
Evaluating the Retreat, Stabilization, and Regrowth of Crane Glacier against Ice Cliff Process Models: Can Crane Glacier Validate the Marine Ice Cliff Instability Hypothesis? (1088110)
Caroline Needell, Amherst College, Geology, Amherst, United States and Nicholas Holschuh, Amherst College, Geology, Amherst, MA, United States
 
Ocean Processes Observed in the Central Ross Ice Shelf Cavity Using a Year-Long Hydrographic Mooring (1088203)
Yingpu Xiahou1,2, Craig L Stevens1,2, Alena Malyarenko2,3 and Melissa Bowen4, (1)University of Auckland, Department of Physics, Auckland, New Zealand, (2)National Institute of Water and Atmospheric Research, Wellington, New Zealand, (3)National Modelling Hub, Antarctic Research Center, VUW, Wellington, New Zealand, (4)University of Auckland, School of Environment, Auckland, New Zealand
 
Iceberg Melt Rates Reveal Spatial Variations in Ocean Thermal Forcing Around Antarctica (1135231)
Ellyn M Enderlin1, Carlos F Moffat2, Emily Miller3, Mariama C Dryak4, Adam Dickson5, Caitlin Oliver6 and Rainey Aberle1, (1)Boise State University, Department of Geosciences, Boise, ID, United States, (2)University of Delaware, Newark, DE, United States, (3)Lamont-Doherty Earth Observatory of Columbia University, Palisades, United States, (4)University of Maine, Climate Change Institute, School of Earth and Climate Sciences, Orono, ME, United States, (5)Boise State University, Department of Geosciences, Boise, United States, (6)Boise State University, Boise, ID, United States
 
Glacial Meltwater Characteristics and Distribution Observed in Summer 2020 Near and Off the Pine Island and Thwaites Ice Shelves, West Antarctica (1139184)
Joohyang Kim, Seoul National University, Seoul, Korea, Republic of (South) and SungHyun Nam, Seoul National University, Seoul, South Korea
 
Separation of Ice Sheet and GIA Mass Variations in Antarctica Using Satellite Gravimetry and Satellite Altimetry Data (1140871)
Keiko Yamamoto, NAOJ National Astronomical Observatory of Japan, Tokyo, Japan, Junichi Okuno, Natl. Inst. Polar Res., Tachikawa, Tokyo, Japan, Koichiro Doi, NIPR National Institute of Polar Research, Tokyo, Japan and Yoichi Fukuda, Graduate School of Science, Kyoto University, Kyoto, Japan
 
Direct Observation of Basal Sliding beneath Langhovde Glacier, East Antarctica (1144009)
Ken Kondo1,2, Shin Sugiyama1,2, Masahiro Minowa1,2 and Evgeny A. Podolskiy2,3, (1)Hokkaido University, Institute of Low Temperature Science, Sapporo, Japan, (2)Hokkaido University, Graduate School of Environmental Science, Sapporo, Japan, (3)Hokkaido University, Arctic Research Center, Sapporo, Japan
 
Seawater intrusions beneath grounded ice at Thwaites Glacier (Invited) (1147302)
Kiya L Riverman1, Sridhar Anandakrishnan2, Elisabeth Rose Clyne3, Keith W Nicholls4, Peter E D Davis5, James Smith4, Clare Eayrs6, Christian Wild7, Richard B Alley8, John Leeman9, Britney Schmidt10, Peter Washam11, Daniel Dichek12, Aurora Basinski13, Eric J Rignot14 and David Holland13, (1)University of Portland, Portland, United States, (2)Pennsylvania State Univ, University Park, PA, United States, (3)Lewis and Clark College, Portland, United States, (4)British Antarctic Survey, Cambridge, United Kingdom, (5)University of Oxford, Oxford, United Kingdom, (6)New York University Abu Dhabi, Centre for Global Sea Level Change, Abu Dhabi, United Arab Emirates, (7)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (8)Pennsylvania State University, Geosciences, and Earth and Environmental Systems Institute, University Park, United States, (9)Leeman Geophysical, Siloam Springs, United States, (10)Cornell University, Astronomy and Earth and Atmospheric Sciences, Ithaca, NY, United States, (11)Cornell University, Ithaca, United States, (12)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States, (13)New York University, Courant Institute of Mathematical Sciences, New York, NY, United States, (14)University of California Irvine, Department of Earth System Science, Irvine, United States
 
An Overview of the Ocean-focussed Aspects of TARSAN (Thwaites-Amundsen Regional Survey and Network Integrating Atmosphere-Ice-Ocean Processes) (1148831)
Tiago Dotto, University of East Anglia, Norwich, United Kingdom, Tasha Snow, Colorado School of Mines, Geophysics, Golden, CO, United States and TARSAN Team
 
Irreversible Retreat of the Amundsen Sea Glaciers in a Coupled Ice-Ocean Model (Invited) (1159675)
Jan De Rydt, Northumbria University, Geography and Environmental Sciences, Newcastle upon Tyne, United Kingdom, Gudmundur Hilmar Gudmundsson, Northumbria University, Geography and Environmental Sciences, Newcastle-Upon-Tyne, United Kingdom and Kaitlin Naughten, NERC British Antarctic Survey, Cambridge, United Kingdom
 
Combining stress- and damage-based calving laws reproduces recent behavior of Thwaites Glacier, Antarctica, and enhances 21st century ocean-driven retreat (1171626)
Trevor Hillebrand1, Matthew J Hoffman1, Mauro Perego2, Stephen F Price3, Holly Kyeore Han4, Julia Andreasen5, Samuel Benjamin Kachuck6, Tong Zhang7 and Jeremy N Bassis8, (1)Los Alamos National Laboratory, Fluid Dynamics and Solid Mechanics, Los Alamos, United States, (2)Sandia National Laboratories, Albuquerque, United States, (3)Los Alamos National Laboratory, Los Alamos, NM, United States, (4)Los Alamos National Laboratory, Fluid Dynamics and Solid Mechanics, Los Alamos, NM, United States, (5)University of Minnesota Twin Cities, Minneapolis, MN, United States, (6)University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (7)Beijing Normal University, Beijing, China, (8)University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, United States
 
Sea Ice, Fast Ice, and Icebergs as Modulators of Ocean-Ice Shelf Interactions (1180635)
Sharon Elisabeth Stammerjohn, University of Colorado Boulder, Boulder, CO, United States, Pierre St-Laurent, Virginia Institute of Marine Science, Gloucester Point, VA, United States, Ted Maksym, Woods Hole Oceanographic Inst, Woods Hole, MA, United States, Patricia L Yager, University of Georgia, Athens, GA, United States and Robert M Sherrell, Rutgers University, Departments of Marine and Coastal Sciences and Earth and Planetary Sciences, New Brunswick, NJ, United States
 
Observations of Wave Propagation on Pine Island Glacier, West Antarctica, Illuminate the Mechanics of Slip at the Bed (1184239)
Erik Tamre1, Bryan V Riel1, Ian R Joughin2 and Brent Minchew1, (1)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)Applied Physics Laboratory University of Washington, Seattle, WA, United States
 
Pairing eyes in the sky with instruments in the deep: mapping the Antarctic Coastal Current in the Amundsen Sea (1186013)
Tasha Snow1, Anna Wahlin2, Bastien Yves Queste2, Guilherme Bortolotto3, Lars Boehme4, Elena Savidge5, Ellianna Abrahams6, Matthew Siegfried7 and Waleed Abdalati8, (1)Colorado School of Mines, Department of Geophysics, Golden, CO, United States, (2)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, (3)University of St Andrews, St Andrews, United Kingdom, (4)Scottish Oceans Institute, Sea Mammal Research Unit, St. Andrews, United Kingdom, (5)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, (6)University of California Berkeley, Statistics, Berkeley, CA, United States, (7)Colorado School of Mines, Department of Geophysics, Hydrologic Science & Engineering Program, Golden, CO, United States, (8)University of Colorado, Department of Geography, Boulder, CO, United States
 
Continuous high spatial and temporal resolution remote sensing observations will allow rapid learning of physics from data (1187627)
Brent M Minchew1, Annick Jade Dewald2, R. John Hansman2 and Charles L Werner3, (1)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, Cambridge, United States, (3)Gamma Remote Sensing, Guemligen, Switzerland
 
Mapping of Traveling Velocity Waves over Thwaites Glacier, West Antarctica, with Sentinel-1 (1189977)
Justin P Linick1, Brent Minchew1 and Bryan V Riel1,2, (1)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)Zhejiang University, School of Earth Sciences, Hangzhou, China
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