C003
Advances in Observing and Modeling Ice Sheet and Ice Shelf Surface Mass Balance: Past, Present, and Future

Session ID#: 75908

Session Description:
A reliable estimate of surface mass balance (SMB), including its components, change, and drivers, is pivotal for understanding past, present, and future ice sheet mass balance and sea level change.  Large temporal SMB variability, predominantly driven by snowfall anomalies, challenges the detection of longer-term trends in Antarctic mass balance.  As the atmosphere warms, episodes of pervasive melt are becoming frequent over Greenland Ice Sheet and Antarctic ice shelves.  Melt water can be partly stored in firn, crevasses, surface or buried ponds and rivers, impacting hydrofracture, cryohydrologic warming, firn pore-space depletion, and snow/ice darkening. Our assessment of ice sheet mass balance depends on the accurate representation of these processes in ice sheet and climate models and evaluation using observations.  We invite papers that study processes such as snowfall, snow redistribution, firn densification, meltwater retention, surface water storage and drainage, and albedo, using remote sensing, ground-based measurements, and modeling approaches.
Index Terms:

0726 Ice sheets [CRYOSPHERE]
0728 Ice shelves [CRYOSPHERE]
0736 Snow [CRYOSPHERE]
0762 Mass balance [CRYOSPHERE]

Primary Convener:  Jan Lenaerts, University of Colorado at Boulder, Boulder, United States
Conveners:  Luke D Trusel, Clark Labs, Worcester, MA, United States, Brice Noel, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands and Indrani Das, Lamont -Doherty Earth Observatory, Palisades, NY, United States
Primary Liaison:  Jan Lenaerts, University of Colorado at Boulder, Boulder, United States
 
Synoptic- and local-scale physical processes driving atmospheric river impacts on Greenland Ice Sheet surface mass balance (Invited) (490927)
Kyle Mattingly, University of Georgia, Athens, GA, United States; Rutgers University, Piscataway, NJ, United States, Thomas L Mote, Univ Georgia, Athens, GA, United States and Xavier Fettweis, University of Liège, Liège, Belgium
 
Modelling the drifting snow climate and surface mass balance of Adélie Land (498957)
Amory Charles1, Christoph Kittel1, Cécile Agosta2, Vincent Favier3 and Xavier Fettweis1, (1)University of Liège, Liège, Belgium, (2)Laboratoire des Sciences du Climat et de l'Environnement LSCE-IPSL, Paris-Saclay, France, (3)University Grenoble Alpes, IGE, Saint Martin d'Hères, France
 
Are We Saturated Yet? Assessing Future Surface Melt on Antarctic Ice Shelves Using the Community Earth System Model (502156)
Jan Lenaerts, University of Colorado at Boulder, Boulder, United States
 
Comparison of Inter-Annual and Long Term Trends in Glacier-Wide Mass Balance of Three Neighboring Glaciers in SE Alaska 1998-2018 (510737)
Jacyn Schmidt, Carleton College, Northfield, MN, United States, Eve Cinquino, Bates College, Lewiston, ME, United States, Stacey Edmonsond, Princeton University, Princeton, NJ, United States, Madeline Hall, Boise State University, Boise, ID, United States, Josh Bretthauer, Reed College, Portland, OR, United States, Audrey Erickson, Skidmore College, Saratoga Springs, NY, United States and Chris McNeil, United States Geological Survey, Anchorage, WA, United States
 
CESM2 climate forcing (1950-2014) yields realistic Greenland ice sheet surface mass balance and recent trends (514662)
Brice Noel1, Leo van Kampenhout2, Willem Jan van de Berg3, Jan Lenaerts4, Bert Wouters5 and Michiel R van den Broeke3, (1)Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (2)Utrecht University, Utrecht, Netherlands, (3)Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (4)University of Colorado, Boulder, ATOC, Boulder, United States, (5)IMAU/TU Delft, Utrecht/Delft, Netherlands
 
Dataset Coming Up: Antarctic-wide Supraglacial Lake Extent and Depth using Landsat 8 and Sentinel-2, 2013-2019 (517011)
Allen Pope, National Snow and Ice Data Center, CIRES University of Colorado, Boulder, CO, United States, Mahsa S Moussavi, University of Colorado at Boulder, Boulder, CO, United States, Anna Ruth W Halberstadt, Worcester State University, Geography Department, Worcester, MA, United States and Luke D Trusel, Clark Labs, Worcester, MA, United States
 
How well do climate models capture Antarctic ice sheet surface mass balance over the 19th and 20th centuries? (523606)
Tessa Gorte, Arvada, CO, United States, Jan Lenaerts, University of Colorado, Boulder, ATOC, Boulder, United States and Brooke Medley, NASA Goddard Space Flight Center, Greenbelt, MD, United States
 
Detailed simulations of spatial snow accumulation patterns and near surface snow properties in Dronning Maud Land, East Antarctica (528851)
Nander Wever, University of Colorado, Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States, Eric Keenan, University of Colorado Boulder, Atmospheric and Oceanic Sciences, Boulder, CO, United States, Michael Lehning, WSL/SLF and EPFL, Davos Dorf, Switzerland, Hendrik Huwald, EPFL Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland and Jan Lenaerts, University of Colorado, Boulder, ATOC, Boulder, United States
 
Snowmelt–Albedo Feedback: How Does It Impact Antarctic Surface Melt Rates? (536668)
Stan Jakobs1, Carleen Reijmer1, Michiel R van den Broeke1, Gert König-Langlo2, Peter Kuipers Munneke1, Paul Smeets1, Luke D Trusel3, Willem Jan van de Berg1 and Melchior van Wessem1, (1)Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (3)Pennsylvania State University, Department of Geography, University Park, PA, United States
 
High Resolution Modeling of Subsurface Processes in Firn in Southwest Greenland (537479)
Federico Covi1, Regine Hock1, Carleen Reijmer2, Asa K Rennermalm3 and Marco Tedesco4,5, (1)University of Alaska Fairbanks, Fairbanks, AK, United States, (2)Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, Netherlands, (3)Rutgers University, New Brunswick, NJ, United States, (4)Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States, (5)NASA Goddard Institute for Space Studies, New York, NY, United States
 
Deciphering temporal changes of the Antarctica Ice Sheet from geodetic observations (537974)
Athul Kaitheri, Université Côte d’Azur, CNRS, OCA, IRD, Geoazur, Valbonne, France, Anthony Mémin, Université Côte d’Azur, CNRS, OCA, IRD, Géoazur, Nice, France, Matt A King, University of Tasmania, Surveying and Spatial Sciences, School of Technology, Environments and Design, Hobart, TAS, Australia, Jean-Paul Boy, Université de Strasbourg, CNRS, EOST, IPGS UMR 7516, Strasbourg, France and Frederique Remy, CNRS - Legos, Toulouse, France
 
Impact of varying bare ice extent and albedo on Greenland ice sheet SMB in the NASA GISS ModelE GCM (538497)
Patrick M Alexander1,2, Marco Tedesco1,3, Allegra N. LeGrande4, Elizabeth Fischer5, Shujie Wang6, Xavier Fettweis7, Mark Flanner8, Maxwell Kelley1, Sophie Nowicki9 and Gavin A Schmidt10, (1)NASA Goddard Institute for Space Studies, New York, NY, United States, (2)Lamont Doherty Earth Observatory, Columbia University, New York, NY, United States, (3)Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States, (4)NASA GISS 568, New York, NY, United States, (5)Columbia University, Center for Climate Systems Research, New York, NY, United States, (6)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (7)University of Liège, Liège, Belgium, (8)University of Michigan, Ann Arbor, MI, United States, (9)NASA GSFC, Greenbelt, MD, United States, (10)NASA/GISS, New York, NY, United States
 
The exceptional 2019 melting season over the Greenland ice sheet: drivers, implications and new records (539161)
Marco Tedesco, Columbia University of New York, Palisades, NY, United States, Twila A Moon, University of Washington, Seattle, WA, United States, Patrick M Alexander, NASA Goddard Institute for Space Studies, New York, NY, United States; Lamont Doherty Earth Observatory, Columbia University, New York, NY, United States, Paolo Colosio, Xavier Fettweis, University of Liège, Liège, Belgium, Jennifer Ann Francis, Woods Hole Research Center, Falmouth, MA, United States and Shujie Wang, Lamont -Doherty Earth Observatory, Palisades, NY, United States
 
Tropical Forcing of West Antarctic Ice Sheet Surface Mass Balance Variability (540068)
Summer Rupper1, Joey Krueger1, Courtenay Strong2 and Durban G Keeler1, (1)University of Utah, Department of Geography, Salt Lake City, UT, United States, (2)University of Utah, Atmospheric Sciences, Salt Lake City, UT, United States
 
Small-scale variability of meltwater refreezing in Southwest Greenland Ice Sheet firn (541470)
Jing Xiao1, Asa K Rennermalm2, Sasha Z Leidman2, Federico Covi3, Regine Hock4, Kierin Rogers5, Michael J MacFerrin6 and Marco Tedesco7, (1)Rutgers University New Brunswick, New Brunswick, NJ, United States, (2)Rutgers University, New Brunswick, NJ, United States, (3)Geophysical Institute Fairbanks, Fairbanks, AK, United States, (4)Univ of AK-Geophysical Inst, Fairbanks, AK, United States, (5)Rutgers University New Brunswick, Mason Gross School of The Arts, New Brunswick, United States, (6)University of Colorado, Boulder, CO, United States, (7)Columbia University, Palisades, NY, United States
 
Projection of the Antarctic surface mass balance by 2100 using MAR (542008)
Christoph Kittel1, Amory Charles1, Cécile Agosta2, Stefan Hofer1 and Xavier Fettweis1, (1)University of Liège, Liège, Belgium, (2)Laboratoire des Sciences du Climat et de l'Environnement LSCE-IPSL, Paris-Saclay, France
 
Spatiotemporal variability of ice algal blooms in southwest Greenland and its impact on bare ice albedo based on MERIS and MODIS satellite observations (542200)
Shujie Wang1, Marco Tedesco2,3, Patrick M Alexander3,4 and Min Xu5, (1)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (2)Lamont Doherty Earth Observatory, Columbia University, Palisades, NY, United States, (3)NASA Goddard Institute for Space Studies, New York, NY, United States, (4)Lamont Doherty Earth Observatory, Columbia University, New York, NY, United States, (5)The University of Alabama, Department of Geography, Tuscaloosa, AL, United States
 
Evaluation of summer Greenland blocking index of the CMIP6 models (574400)
Alison Delhasse1, Xavier Fettweis1 and Edward Hanna2, (1)University of Liège, Liège, Belgium, (2)University of Lincoln, Lincoln, United Kingdom
 
A Dense Timeseries of Meltwater Volume over Western Greenland During the 2019 Melt Season Using ICESat-2, Planet SkySat (and MAR Model Outputs), with a Focus on the 30 July Melt Event (579717)
Rajashree Datta, NASA Goddard Space Flight Center, Greenbelt, NY, United States, Mahsa S Moussavi, University of Colorado at Boulder, Boulder, CO, United States, David E Shean, University of Washington, Seattle, WA, United States, Xavier Fettweis, University of Liège, Liège, Belgium and Brooke Medley, NASA Goddard Space Flight Center, Greenbelt, MD, United States
 
Supraglacial lake drainage at a fast-flowing Greenlandic outlet glacier (588224)
Thomas R Chudley1, Poul Christoffersen1, Samuel Huckerby Doyle2, Marion H Bougamont1, Charlotte M Schoonman3, Bryn P Hubbard2 and Mike R James4, (1)University of Cambridge, Scott Polar Research Institute, Cambridge, United Kingdom, (2)Aberystwyth University, Department of Geography and Earth Sciences, Aberystwyth, United Kingdom, (3)University of Cambridge, Cambridge, United Kingdom, (4)Lancaster University, Lancaster, United Kingdom
 
Evaluation of CloudSat’s cloud-profiling radar for mapping snowfall rates across the Greenland Ice Sheet (588728)
Johnny Ryan1, Laurence C Smith1, Mengxi Wu2, Clément Miège3, Lynn Montgomery4, Lora Koenig5, Xavier Fettweis6, Brice Noel7 and Michiel R van den Broeke8, (1)Brown University, Providence, RI, United States, (2)Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States, (3)University of Utah, Salt Lake City, UT, United States, (4)University of Colorado Boulder, Boulder, United States, (5)NSIDC, Boulder, CO, United States, (6)University of Liège, Liège, Belgium, (7)Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (8)Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands
 
A new vision of Antarctic surface melt: high-resolution observations from active and passive microwave satellites (590244)
Luke D Trusel, Pennsylvania State University, University Park, PA, United States, Allen Pope, International Arctic Science Committee IASC Executive Secretariat, Akureyri, Iceland, Mahsa S Moussavi, University of Colorado at Boulder, Boulder, CO, United States and Anna Ruth W Halberstadt, University of Massachusetts Amherst, Amherst, MA, United States
 
Densification of Polar Firn (592530)
Ian Baker, Dartmouth College, Hanover, NH, United States
 
GSFC-FDM: a new, 39-year simulation of firn processes over the Greenland and Antarctic ice sheets (Invited) (596479)
Brooke Medley1, Tom Neumann1, H Jay Zwally2,3, Benjamin Eaton Smith4 and Christopher Stevens4, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA Goddard Space Flight Center, Laboratory for Cryospheric Sciences, Greenbelt, MD, United States, (3)University of Maryland College Park, Earth System Science Interdisciplinary Center, College Park, MD, United States, (4)University of Washington, Seattle, WA, United States
 
Evaluating the surface mass balance from E3SM with LIVVkit 3.0 (597056)
Joseph H Kennedy1, Katherine J Evans1, Matthew J Hoffman2, Stephen F Price2 and Adam Michael Schneider3, (1)Oak Ridge National Laboratory, Oak Ridge, TN, United States, (2)Los Alamos National Laboratory, Los Alamos, NM, United States, (3)University of California Irvine, Irvine, CA, United States
 
Explicit channel routing of supraglacial meltwater to assess channel incision, lake filling, and moulin injection: bringing big-data terrestrial hydrology to the Greenland Ice Sheet (603125)
Colin J Gleason, University of Massachusetts Amherst, Civil & Environmental Engineering, Amherst, MA, United States, Kang Yang, Nanjing University, School of Geography and Ocean Science, Nanjing, China, Laurence C Smith, Brown University, Providence, RI, United States, Lincoln H Pitcher, University of California Los Angeles, Los Angeles, CA, United States and Dongmei Feng, University of Massachusetts Amherst, Amherst, United States
 
Mapping firn aquifers on Antarctic ice shelves from space using L-band satellite microwave radiometry (603362)
Julie Miller1, Ted A Scambos2, David G Long3, Clément Miège4, Bruce Wallin2, Lynn Montgomery5 and Mary J. Brodzik2, (1)University of Colorado at Boulder, Boulder, CO, United States, (2)University of Colorado Boulder, Boulder, CO, United States, (3)Brigham Young University, Provo, UT, United States, (4)Rutgers University, New Brunswick, NJ, United States, (5)University of Colorado Boulder, Boulder, United States
 
Estimating Supraglacial Melt Water Storage from ICESat-2: First Results and Validation (609291)
Bert Wouters, Institute for Marine and Atmospheric Research Utrecht/Delft University of Technology, Utrecht, Netherlands, Stef Lhermitte, Delft University of Technology, Geoscience and Remote Sensing, Delft, Netherlands and Rebecca L Dell, University of Cambridge, Scott Polar Research Institute, Cambridge, United Kingdom
 
Measurements of solar light transmission in bare glacier ice: Implications for subsurface meltwater production in the Greenland Ice Sheet ablation zone (609915)
Matthew G Cooper1, Laurence C Smith2, Asa K Rennermalm3, Marco Tedesco4, Rohi Muthyala5, Samiah Moustafa6, Glen E Liston7, Jessica V. Fayne8, Willem Jan van de Berg9, Christiaan T van Dalum9,10 and Michiel R van den Broeke9, (1)University of California Los Angeles, Geography, Los Angeles, CA, United States, (2)Brown University, Providence, RI, United States, (3)Rutgers University, New Brunswick, NJ, United States, (4)Columbia University, Palisades, NY, United States, (5)Rutgers University New Brunswick, New Brunswick, NJ, United States, (6)Brown University, Institute at Brown for Environment and Society, Providence, RI, United States, (7)Colorado State University, Cooperative Institute for Research in the Atmosphere (CIRA), Fort Collins, CO, United States, (8)University of California Los Angeles, Department of Geography, Los Angeles, CA, United States, (9)Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (10)Utrecht University, Utrecht, Netherlands
 
1979 – 2018 Climate and Surface Mass Balance of Svalbard with the Regional Climate Model MAR Forced by ERA-5 (610586)
Charlotte Lang, Université de Liège, Liege, Belgium
 
Climatic controls on albedo across the Western Greenland Ice Sheet Percolation Zone (613111)
Gabriel Lewis1, Erich C Osterberg1, Robert L Hawley2, Hans-Peter Marshall3, Tate Meehan4, Karina Graeter5, Forrest McCarthy6, Thomas B Overly7, Zayta Renay Thundercloud1, David G Ferris1, Sean D Birkel8, Jack E Dibb9, Bess G Koffman10 and Marco Tedesco11, (1)Dartmouth College, Department of Earth Sciences, Hanover, NH, United States, (2)Dartmouth College; IASC Cryosphere WG Member, Hanover, NH, United States, (3)Boise State University, Department of Geosciences, Boise, ID, United States, (4)Boise State University, Geosciences, Boise, ID, United States, (5)Bowdoin College, Department of Earth Sciences, Brunswick, ME, United States, (6)Arctic Field Leader, Jackson, WY, United States, (7)University of Maryland Baltimore County, Baltimore, United States, (8)University of Maine, School of Earth and Climate Sciences, Orono, ME, United States, (9)Univ New Hampshire, Durham, NH, United States, (10)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (11)Columbia University, Palisades, NY, United States
 
How well do we understand the influence of drifting and blowing snow in extreme environments? (613441)
Varun Sharma1, Jérôme Dujardin1, Benjamin Walter2, Franziska Gerber1 and Michael Lehning3, (1)Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland, (2)WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland, (3)WSL/SLF and EPFL, Davos Dorf, Switzerland
 
Regional Atmospheric Climate Model Evaluation in Getz and Amery Ice Shelf Basins Using GRACE (616297)
Yara Mohajerani1, Isabella Velicogna2 and Eric J Rignot1, (1)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (2)UCI, Irvine, CA, United States
 
Surface Mass Balance Modeling with WRF-ice for the Larsen C Ice-shelf, Antarctic Peninsula (622054)
Jing Zhang, North Carolina A & T State University, Greensboro, NC, United States
 
Modeling present and future ice covers in two Antarctic lakes: west lobe of Lake Bonney and Crooked Lake (626525)
Sebastian Ignacio Echeverria1, Mark B Hausner2, Nicolas E Bambach-Ortiz3, Sebastian Vicuna4 and Francisco I Suarez1, (1)Pontifical Catholic University of Chile, Santiago, Chile, (2)Desert Research Institute, Division of Hydrologic Sciences, Reno, NV, United States, (3)University of California Davis, Davis, CA, United States, (4)Centro de Cambio Global UC, Santiago, Chile
 
Atmospheric Blocking is a Critical but Poorly Understood Driver of Summertime Greenland Surface Mass Balance (632919)
Erich C Osterberg1, Gabriel Lewis1, Robert L Hawley2, Hans-Peter Marshall3, David G Ferris1, Zayta Renay Thundercloud1, Karina Graeter4, Julianne DeAngelo1, Tate Meehan5, Thomas B Overly6, Sean D Birkel7 and Forrest McCarthy8, (1)Dartmouth College, Department of Earth Sciences, Hanover, NH, United States, (2)Dartmouth College; IASC Cryosphere WG Member, Hanover, NH, United States, (3)Boise State University, Department of Geosciences, Boise, ID, United States, (4)Bowdoin College, Department of Earth Sciences, Brunswick, ME, United States, (5)Boise State University, Geosciences, Boise, ID, United States, (6)Dartmouth College, Hanover, NH, United States, (7)University of Maine, School of Earth and Climate Sciences, Orono, ME, United States, (8)Arctic Field Leader, Jackson, WY, United States
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