Divergent consensuses on Arctic amplification influence on midlatitude severe winter weather

J. Cohen (), X. Zhang, J. Francis, T. Jung, R. Kwok, J. Overland, T. J. Ballinger, U. S. Bhatt, H. W. Chen, D. Coumou, S. Feldstein, H. Gu, D. Handorf, G. Henderson, M. Ionita, M. Kretschmer, F. Laliberte, S. Lee, H. W. Linderholm, W. Maslowski, Y. Peings, K. Pfeiffer, I. Rigor, T. Semmler, J. Stroeve, P. C. Taylor, S. Vavrus, T. Vihma, S. Wang, M. Wendisch, Y. Wu and J. Yoon
Additional contact information
J. Cohen: Atmospheric and Environmental Research Inc.
X. Zhang: University of Alaska Fairbanks
J. Francis: Woods Hole Research Center
T. Jung: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research
R. Kwok: Jet Propulsion Laboratory
J. Overland: NOAA/PMEL
T. J. Ballinger: Texas State University
U. S. Bhatt: University of Alaska Fairbanks
H. W. Chen: Lund University
D. Coumou: Potsdam Institute for Climate Impact Research
S. Feldstein: Pennsylvania State University
H. Gu: Utah State University
D. Handorf: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research
G. Henderson: United States Naval Academy
M. Ionita: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research
M. Kretschmer: Vrije Universiteit Amsterdam
F. Laliberte: Environment and Climate Change Canada
S. Lee: Pennsylvania State University
H. W. Linderholm: University of Gothenburg
W. Maslowski: Naval Postgraduate School
Y. Peings: University of California
K. Pfeiffer: Atmospheric and Environmental Research Inc.
I. Rigor: University of Washington
T. Semmler: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research
J. Stroeve: University College London
P. C. Taylor: NASA Langley Research Center
S. Vavrus: University of Wisconsin
T. Vihma: Finnish Meteorological Institute
S. Wang: Utah State University
M. Wendisch: University of Leipzig
Y. Wu: Columbia University
J. Yoon: Gwangju Institute of Science and Technology

Nature Climate Change, 2020, vol. 10, issue 1, 20-29

Abstract: Abstract The Arctic has warmed more than twice as fast as the global average since the late twentieth century, a phenomenon known as Arctic amplification (AA). Recently, there have been considerable advances in understanding the physical contributions to AA, and progress has been made in understanding the mechanisms that link it to midlatitude weather variability. Observational studies overwhelmingly support that AA is contributing to winter continental cooling. Although some model experiments support the observational evidence, most modelling results show little connection between AA and severe midlatitude weather or suggest the export of excess heating from the Arctic to lower latitudes. Divergent conclusions between model and observational studies, and even intramodel studies, continue to obfuscate a clear understanding of how AA is influencing midlatitude weather.

Date: 2020
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DOI: 10.1038/s41558-019-0662-y

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