Articles | Volume 17, issue 9
https://doi.org/10.5194/tc-17-4133-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-4133-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
22 Sep 2023
Research article |
| 22 Sep 2023
| 22 Sep 2023
Forced and internal components of observed Arctic sea-ice changes
Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
David B. Bonan
California Institute of Technology, Pasadena, California, USA
Marius Årthun
Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
Lea Svendsen
Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
Robert C. J. Wills
Department of Atmospheric Sciences, University of Washington, Seattle, Washington, USA
Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland
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Short summary
The Arctic sea-ice cover is retreating due to climate change, but this retreat is influenced by natural (internal) variability in the climate system. We use a new statistical method to investigate how much internal variability has affected trends in the summer and winter Arctic sea-ice cover using observations since 1979. Our results suggest that the impact of internal variability on sea-ice retreat might be lower than what climate models have estimated.
The Arctic sea-ice cover is retreating due to climate change, but this retreat is influenced by...
