An approach for projecting the timing of abrupt winter Arctic sea ice loss
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Published:2023-07-21
Issue:3
Volume:30
Page:299-309
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ISSN:1607-7946
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Container-title:Nonlinear Processes in Geophysics
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language:en
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Short-container-title:Nonlin. Processes Geophys.
Author:
Hankel CamilleORCID, Tziperman EliORCID
Abstract
Abstract. Abrupt and irreversible winter Arctic sea ice loss may occur under anthropogenic warming due to the disappearance of a sea ice equilibrium at a
threshold value of CO2, commonly referred to as a tipping point. Previous work has been unable to conclusively identify whether a tipping
point in winter Arctic sea ice exists because fully coupled climate models are too computationally expensive to run to equilibrium for many
CO2 values. Here, we explore the deviation of sea ice from its equilibrium state under realistic rates of CO2 increase to
demonstrate for the first time how a few time-dependent CO2 experiments can be used to predict the existence and timing of sea ice tipping
points without running the model to steady state. This study highlights the inefficacy of using a single experiment with slow-changing CO2
to discover changes in the sea ice steady state and provides a novel alternate method that can be developed for the identification of tipping
points in realistic climate models.
Funder
National Science Foundation
Publisher
Copernicus GmbH
Reference52 articles.
1. Abbot, D. S. and Tziperman, E.:
Sea ice, high-latitude convection, and equable climates, Geophys. Res. Lett., 35, L03702, https://doi.org/10.1029/2007GL032286, 2008. a, b 2. Abbot, D. S., Walker, C., and Tziperman, E.:
Can a convective cloud feedback help to eliminate winter sea ice at high CO2 concentrations?, J. Climate, 22, 5719–5731, https://doi.org/10.1175/2009JCLI2854.1, 2009. a 3. An, S.-I., Kim, H.-J., and Kim, S.-K.:
Rate-Dependent Hysteresis of the Atlantic Meridional Overturning Circulation System and Its Asymmetric Loop, Geophys. Res. Lett., 48, e2020GL090132, https://doi.org/10.1029/2020GL090132, 2021. a, b, c, d, e 4. Armour, K., Eisenman, I., Blanchard-Wrigglesworth, E., McCusker, K., and Bitz, C.:
The reversibility of sea ice loss in a state-of-the-art climate model, Geophys. Res. Lett., 38, L16705, https://doi.org/10.1029/2011GL048739, 2011. a 5. Baer, S. M., Erneux, T., and Rinzel, J.:
The slow passage through a Hopf bifurcation: delay, memory effects, and resonance, SIAM J. Appl. Math., 49, 55–71, 1989. a, b
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