C004
Advances in Understanding Ice Sheet and Ice Shelf Surface Mass Balance: Past, Present, and Future
Session ID#: 158505
Session Description:
Reliable estimates of surface mass balance (SMB) are critical for understanding past, present, and future ice sheet mass balance and sea level change. In Antarctica, trends in mass balance are sensitive to large variability in SMB, driven predominantly by snowfall anomalies. Meltwater runoff is a leading driver of Greenland SMB and mass loss. Increases in melt more broadly over ice sheet and ice shelf surfaces warrants greater attention to surface hydrology and its potential impacts on hydrofracture, firn properties, and surface albedo. Our assessment of ice sheet mass balance depends on detailed observations and the accurate representation of these processes in ice sheet and climate models. We invite both observational and modeling-based presentations that study SMB processes, drivers, and impacts, including snow accumulation and redistribution, firn densification, meltwater production, retention, and transport, and those that combine SMB with solid ice discharge products to assess trends in ice sheet mass balance.
Index Terms:
0726 Ice sheets [CRYOSPHERE]
0728 Ice shelves [CRYOSPHERE]
0740 Snowmelt [CRYOSPHERE]
0762 Mass balance [CRYOSPHERE]
Primary Convener: Michalea D King, Applied Physics Laboratory University of Washington, Polar Science Center, Seattle, WA, United States
Conveners: Luke D Trusel, Pennsylvania State University Main Campus, University Park, PA, United States, Brice Noel, Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands and Devon R Dunmire, University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States
Student/Early Career Convener: Devon R Dunmire, University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States
Densifying Firn, Ice Slabs and the Greenland Ice Sheet’s Rising Runoff Limit (Invited) (1046518)
Andrew J Tedstone1, Horst Machguth2, Nicole Clerx2 and Nicolas Jullien2, (1)University of Fribourg, Department of Geosciences, Fribourg, Switzerland, (2)University of Fribourg, Fribourg, Switzerland
How discrepancies between observations and climate models of large-scale wind-driven Greenland melt influence sea-level rise projections (1105416)
Daniel Topal, Research Centre for Astronomy and Earth Sciences, Institute for Geological and Geochemical Research, Budapest, Hungary, Qinghua Ding, University of California Santa Barbara, Santa Barbara, CA, United States, Thomas Ballinger, University of Alaska Fairbanks, Fairbanks, AK, United States, Edward Hanna, University of Lincoln, Lincoln, United Kingdom, Xavier Fettweis, University of Liège, Département de Géographie, Liège, Belgium, Zhe Li, University of California Santa Barbara, Geography, Santa Barbara, CA, United States and Ildikó Pieczka, Eotvos Lorand University, Department of Meteorology, Budapest, Hungary
Continent-Wide Antarctic Remote Sensing Assimilation of Passive Microwave Data into the Regional Climate Model MAR (1109320)
Quentin Glaude1, Thomas Dethinne2, Christoph Kittel3, Xavier Fettweis2 and Orban Anne1, (1)Université de Liège, Centre Spatial de Liège, Angleur, Belgium, (2)University of Liège, Département de Géographie, Liège, Belgium, (3)University Grenoble Alpes, Institut des Géosciences de l'Environnement, Grenoble, France
Investigating Projected Greenland Ice Surface Energy Balance and Surface Mass Balance this Century: Identification and Quantification of Key Model Uncertainties (1113198)
Nicole Schlegel, NASA Jet Propulsion Laboratory, Pasadena, United States, Alex S Gardner, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, Youngmin Choi, University of California - Irvine, Irvine, CA, United States and Helene L Seroussi, Dartmouth College, Thayer School of Engineering, Hanover, NH, United States
Decreasing surface albedo signifies a growing importance of clouds for Greenland Ice Sheet meltwater production (1114756)
Jonathan Ryan1, Laurence C Smith2, Sarah W Cooley3, Brodie Pearson4, Nander Wever5, Eric Keenan6 and Jan Lenaerts5, (1)University of Oregon, Eugene, OR, United States, (2)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, (3)University of Oregon, Eugene, United States, (4)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (5)University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States, (6)University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States
Proglacial River Stage Derived from Georectified Time-lapse Camera Images, Inglefield Land, Northwest Greenland (1121256)
Seth Goldstein1, Jonathan Ryan2, Penelope How3, Sarah Esenther1, Lincoln H H Pitcher4,5, Adam LeWinter6, Brandon T Overstreet7, Ethan D. Kyzivat8, Jessica V. Fayne9 and Laurence C Smith8, (1)Brown University, Providence, RI, United States, (2)Aberystwyth University, Department of Geography and Earth Sciences, Aberystwyth, United Kingdom, (3)Geological Survey of Denmark and Greenland, København K, Denmark, (4)CIRES, Boulder, United States, (5)Oak Ridge Institute for Science and Education, Oak Ridge, TN, United States, (6)U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, NH, United States, (7)University of Wyoming, Laramie, WY, United States, (8)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, (9)University of California Los Angeles, Department of Geography, Los Angeles, United States
Incorporating Physically Based Bare Ice Albedo over Greenland within the Energy Exascale Earth System Model (E3SM) (1125426)
Chloe Whicker1, Raf Antwerpen2, Mark Flanner3, Adam Schneider4, Charles S Zender5, Marco Tedesco2 and Cheng Dang6, (1)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (2)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (3)University of Michigan, Department of Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, (4)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (5)Univ California Irvine, Department of Earth System Science, Irvine, CA, United States, (6)Joint Center for Satellite Data Assimilation, University Corporation for Atmospheric Research, Boulder, United States
Contribution of Atmospheric River Precipitation to Height Changes Over the Antarctic Ice Sheet, 2019–2022 (1132104)
Susheel Adusumilli, Scripps Institution of Oceanography, La Jolla, CA, United States and Helen Amanda Fricker, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Analysis of possible errors from observations in predicting Antarctic ice sheet flow (1132572)
Hyuk Kang, NIMS National Institute for Mathematical Sciences, Deajeon, Korea, Republic of (South), In-Woo Park, Seoul National University, Seoul, Korea, Republic of (South) and Okyu Kwon, NIMS National Institute for Mathematical Sciences, Deajeon, South Korea
Bare ice darkening impacts on northwestern Greenland ice sheet runoff (1134218)
Masashi Niwano, Meteorological Research Institute, Tsukuba, Japan, Jason Box, Geological Survey of Denmark and Greenland, Copenhagen, Denmark, Xavier Fettweis, University of Liège, Département de Géographie, Liège, Belgium and Adrien Wehrlé, University of Zurich, Zurich, Switzerland
The Complex Relationship Between Grain Size Transitions and Ice Layer Formation in the Shallow Firn Column of Western Greenland (1134833)
Ian McDowell, University of Nevada, Reno, Graduate Program of Hydrologic Sciences, Reno, NV, United States, Kaitlin M Keegan, University of Nevada, Reno, Department of Geological Sciences and Engineering, Reno, United States, Nander Wever, University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States, Erich C Osterberg, Dartmouth College, Department of Earth Sciences, Hanover, NH, United States, Robert L Hawley, Dartmouth College, Department of Earth Sciences, Hanover, United States and Hans-Peter Marshall, Boise State University, Department of Geosciences, Boise, ID, United States
Examining the Role of Anomalous/Extreme Precipitation Events on Surface Mass Balance in Antarctica (1163077)
Collin Richardson, University of California Irvine, Irvine, CA, United States, Isabella Velicogna, UCI, Irvine, CA, United States, Geruo A, University of California Irvine, Department of Earth System Science, Irvine, CA, United States and Tyler C Sutterley, University of California Irvine, Irvine, United States
High-resolution, Fully-coupled Simulations of the Greenland Ice Sheet in a Future, Strong Warming Scenario (1168701)
Ziqi Yin1, Adam R Herrington2, Rajashree Datta1 and Jan Lenaerts1, (1)University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States, (2)National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States
The Sources of Moisture and the Impact of Southern Ocean Conditions on Snowfall Over Antarctica (1199382)
Rajashree Datta1, Jan Lenaerts1, Adam R Herrington2, Jesse M Nusbaumer3 and Ziqi Yin1, (1)University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States, (2)National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States, (3)National Center for Atmospheric Research, Boulder, United States
