C024
Nonlinearities, Instabilities, and Abrupt Change in High Latitudes

Session ID#: 160021

Session Description:
The cryosphere has been experiencing some of the most dramatic changes in the climate system due to global warming. As a result, the specter of rapid nonlinear responses in the cryosphere to a gradual change in forcing has fueled ardent research on the topics of nonlinear responses, bistability, hysteresis, and irreversible change. The impacts of such climate shifts could be far-reaching, including accelerated sea level rise, reduced ocean deepwater production, and alterations of Earth's global energy budget. We welcome contributions that investigate all aspects of nonlinear responses in the cryosphere and beyond, including sea ice-ocean-atmosphere feedbacks, land ice processes such as marine ice sheet and ice cliff instabilities, potential critical slowing down of the AMOC, and more. We encourage submissions that use a broad range of approaches, including idealized and comprehensive climate modeling studies, as well as theoretical investigations and analyses of observational in situ and remote sensing data.
Index Terms:

0774 Dynamics [CRYOSPHERE]
4410 Bifurcations and attractors [NONLINEAR GEOPHYSICS]
4512 Currents [OCEANOGRAPHY: PHYSICAL]
4540 Ice mechanics and air/sea/ice exchange processes [OCEANOGRAPHY: PHYSICAL]

Primary Convener:  Till J.W. Wagner, University of Wisconsin Madison, Madison, WI, United States
Conveners:  Ian Eisenman, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, Anna J Crawford, University of St Andrews, St Andrews, KY16, United Kingdom and Geoffrey Gebbie, Woods Hole Oceanographic Inst., Physical Oceanography, Woods Hole, MA, United States
 
A Simple Conceptual Model for the Self-Sustained Multidecadal AMOC Variability (1055074)
Xinyue Wei1 and Rong Zhang1,2, (1)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (2)NOAA/GFDL, Princeton, United States
 
Lifecycle of sea ice floes reproduced using a new discrete element sea ice model (1064301)
Brandon Montemuro, University of Washington, School of Oceanography, Seattle, United States and Georgy Manucharyan, United States
 
Investigation of Changes in Steric Sea Level Due to Antarctic Meltwater (1088025)
Jordan MacIsaac, Purdue University, West Lafayette, IN, United States, Rebecca Lynn Beadling, University of Arizona, Tucson, United States, Graeme Alastair MacGilchrist, University of Oxford, Oxford, United Kingdom and John P Krasting, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
 
Rate-Induced Tipping of the West-Antarctic Ice Sheet (1104760)
Jan Swierczek-Jereczek, Marisa Montoya, Alexander Robinson, Jorge Alvarez-Solas and Javier Blasco Navarro, Complutense University of Madrid, Madrid, Spain
 
Analysis of Early-Warning Signals for Arctic Summer Sea Ice Loss (1110698)
Martin Rypdal1, Nils Bochow1,2 and Anna Poltronieri1, (1)University of Tromsø, Tromsø, Norway, (2)Niels Bohr Institute, København Ø, Denmark
 
Limitations of Marine Ice Sheet and Marine Ice Cliff Instability hypotheses (1160047)
Olga V Sergienko, Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States
 
Assessing the Robustness of Arctic Climate Bi-stability Using a Coupled Atmosphere-Sea Ice Model (1181231)
Camille Hankel, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States and Eli Tziperman, Harvard University, Cambridge, MA, USA., Cambridge, United States
 
Assessing recently proposed complex system stability indicators when applied to changing ice covers (1181654)
Till J.W. Wagner, University of Wisconsin Madison, Madison, WI, United States and Dylan McNamara, University of North Carolina Wilmington, Wilmington, NC, United States
 
Future Climate Projections Using Fully Coupled Ice Sheet and Global Climate Models (1192119)
Shaina Sadai, University of Massachusetts Amherst, Geosciences, Amherst, MA, United States, David Pollard, Pennsylvania State University, Earth and Environmental Systems Institute, State College, United States, Robert M Deconto, Univ Massachusetts, Amherst, MA, United States; University of Massachusetts Amherst, Department of Geosciences, Amherst, United States, Ambarish Karmalkar, University of Massachusetts Amherst, Amherst, MA, United States and Alan Condron, Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States
 
An Exploration of Submesoscale Eddies and Sea Ice Interations and their Implications (1199812)
Hassan Mason, New York University, New York, NY, United States and K. Shafer Smith, New York University, Courant Institute of Mathematical Sciences, New York, NY, United States
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