C038
Understanding the Impact of Extreme Weather Events on Ice Sheets and Ice Shelves
Session ID#: 161313
Session Description:
As Earth's climate warms, extreme weather events driven by large-scale atmospheric dynamics, such as heat domes and atmospheric rivers, are increasing in frequency and intensity over the polar ice sheets. In Greenland, surface melting (2012, 2019) and the first-ever rainfall (2021) at Summit, Greenland was recently recorded. In Antarctica, an anomalous rainfall event recently extended across the entire Ross Ice Shelf (2016), and record surface air temperatures were set in the Antarctic Peninsula (2020), and at Dome C, East Antarctica (2022). Complex interactions at the atmosphere-ice interface during extreme weather events often result in intense surface melting and widespread firn saturation on ice sheets and ice shelves, leading to the rapid formation and/or inland expansion of near-surface ice layers, ice slabs, perennial firn aquifers, and surface lakes and ponds. The presence of these supra- and en-glacial hydrological features has significant implications for mass loss and instability, including facilitating high-elevation flooding and run-off, meltwater-induced hydrofracturing, accelerated ice flow, iceberg rifting and calving, and the collapse and disintegration of vulnerable peripheral ice shelves. We invite submissions that explore satellite and airborne remote sensing analyses, ground-based techniques, numerical modeling approaches, and climate model simulations that will advance the current state of knowledge of the overall impact of extreme weather events on the past, present, and future of the Greenland and Antarctic ice sheets.
Index Terms:
0726 Ice sheets [CRYOSPHERE]
0728 Ice shelves [CRYOSPHERE]
0762 Mass balance [CRYOSPHERE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
Primary Convener: Julie Z Miller, University of Colorado at Boulder, CIRES, Earth Science and Observation Center, Boulder, United States and Andreas Colliander
Conveners: Andreas Colliander, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, Shawn J Marshall, University of Calgary, Calgary, AB, Canada, Christopher Readinger, U.S. National Ice Center, Suitland, MD, United States and Andreas Colliander
Sustained long-term collapse of Conger-Glenzer ice shelf, East Antarctica (Invited) (1072039)
Catherine C Walker, Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering, Woods Hole, MA, United States, Helen Amanda Fricker, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Joanna D Millstein, Massachusetts Institute of Technology, Cambridge, MA, United States, Bertie Miles, Durham University, Department of Geography, Durham, United Kingdom and Luke D Trusel, Pennsylvania State University, Department of Geography, University Park, PA, United States
Greenland Ice Sheet Rainfall, Heat and Albedo Feedbacks From Atmospheric Rivers (Invited) (1086298)
Jason E Box1, Adrien Wehrlé2, Dirk van As1 and Ghislain Picard3, (1)Geological Survey of Denmark and Greenland, København K, Denmark, (2)University of Zurich, Zurich, Switzerland, (3)LGGE Laboratoire de Glaciologie et Géophysique de l’Environnement, Saint Martin d'Hères, France
Microwave Emission Signals Tracking the Collapse of Conger Ice Shelf (1099311)
Andreas Colliander1, Mohammad Mousavi2, Sidharth Misra1 and Catherine C Walker3, (1)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (2)University of Michigan Ann Arbor, Electrical Engineering, Ann Arbor, MI, United States, (3)NASA Headquarters, Washington, United States
Deep and Lasting Impact on Greenland’s Surface Layer from an Extreme Autumn Rainfall Event (1108712)
Jun Saito, University of Montana, Missoula, MT, United States, Joel T Harper, Univ of Montana, Missoula, MT, United States, Neil F Humphrey, UW, Laramie, WY, United States and Toby W Meierbachtol, University of Montana, Geosciences, Missoula, MT, United States
Impacts of Anomalous Integrated Water Vapor Transport Events on the Antarctic Ice Sheet (1133393)
Tristan S Rendfrey1, Jeremy N Bassis2, Claire Pettersen1, Marian Mateling3 and Catherine C Walker4, (1)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (2)University of Michigan, Climate and Space Sciences and Engineering, Ann Arbor, United States, (3)University of Wisconsin Madison, Madison, WI, United States, (4)Woods Hole Oceanographic Institution, Woods Hole, United States
Relationship between SMAP L-band Microwave Measurements and Physical Properties of the Ross Ice Shelf, Antarctica (1156688)
Shujie Wang, Pennsylvania State University Main Campus, University Park, PA, United States, Kenneth C. Jezek, Byrd Polar and Climate Research Center, Columbus, United States, Marion Leduc-Leballeur, Nello Carrara Institute for Applied Physics, Florence, Italy, Joel Johnson, Ohio State University, Department of Electrical and Computer Engineering, Columbus, United States, Marco Brogioni, Institute of Applied Physics “Nello Carrara”, Sesto Fiorentino, Italy, Julie Z Miller, University of Colorado at Boulder, CIRES, Earth Science and Observation Center, Boulder, United States, David G Long, Brigham Young University, Department of Electrical and Computer Engineering, Provo, UT, United States and G Macelloni, Institute of Applied Phyhsics, Microwave Remote Sensing Group, Fiorentino, Italy
Comparable Trends in Retrieved Surface Melting of Ice Sheets using SMAP L-band Microwave Radiometry and a Surface Mass Balance Model of Glaciers (1189085)
Mohammad Mousavi1, Andreas Colliander1, Nicole Schlegel2, Julie Z Miller3 and John Kimball4, (1)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (2)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (3)University of Colorado at Boulder, CIRES, Earth Science and Observation Center, Boulder, United States, (4)University of Montana, Numerical Terradynamic Simulation Group, W.A. Franke College of Forestry & Conservation, Missoula, United States
Retrieving Ice Sheet Melt Water Profile Using Multi Frequency Microwave Radiometry (1189689)
Maryam Salim1, Andreas Colliander2, Mohammad Mousavi3, Shawn J Marshall4 and Mariko S Burgin1, (1)NASA Jet Propulsion Laboratory, Pasadena, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (3)University of Michigan Ann Arbor, Electrical Engineering, Ann Arbor, MI, United States, (4)Univ Calgary, Calgary, AB, Canada
Greenland, Warming Events, and Clouds, A Spatial Analysis of Extreme Events (1195755)
Michael Gallagher1, Matthew Shupe1 and Hélène Chepfer2, (1)CIRES/University of Colorado/NOAA PSL, Boulder, CO, United States, (2)Laboratoire de Météorologie Dynamique Palaiseau, Palaiseau Cedex, France
