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Volume 9, issue 1
The Cryosphere, 9, 53–64, 2015
https://doi.org/10.5194/tc-9-53-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
The Cryosphere, 9, 53–64, 2015
https://doi.org/10.5194/tc-9-53-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 07 Jan 2015

Research article | 07 Jan 2015

Recent summer Arctic atmospheric circulation anomalies in a historical perspective

A. Belleflamme et al.
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Anagnostopoulou, C., Tolika, K., and Maheras, P.: Classification of circulation types: a new flexible automated approach applicable to NCEP and GCM datasets, Theor. Appl. Climatol., 96, 3–15, https://doi.org/10.1007/s00704-008-0032-6, 2009.
Ballinger, T., and Sheridan, S.: Associations between circulation pattern frequencies and sea ice minima in the western Arctic, Int. J. Climatol., 34, 1385–1394, https://doi.org/10.1002/joc.3767, 2014.
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Bardossy, A. and Caspary, H.-J.: Detection of climate change in Europe by analyzing European atmospheric circulation patterns from 1881 to 1989, Theor. Appl. Climatol., 42, 155–167, https://doi.org/10.1007/BF00866871, 1990.
Belleflamme, A., Fettweis, X., Lang, C., and Erpicum, M.: Current and future atmospheric circulation at 500 hPa over Greenland simulated by the CMIP3 and CMIP5 global models, Clim. Dynam., 41, 2061–2080, https://doi.org/10.1007/s00382-012-1538-2, 2013.
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Short summary
The 2007-2012 summertime circulation anomaly over the Arctic region (i.e. more high pressure systems over the Beaufort Sea, the Canadian Arctic Archipelago, and Greenland) is put in a historical perspective. While the 2007-2012 anomaly seems to be exceptional, similar circulation conditions have occurred since 1871, on the basis of five reanalyses (ERA-Interim, ERA-40, NCEP/NCAR, ERA-20C, 20CRv2). The attribution of this anomaly (natural variability or global warming) remains debatable.
The 2007-2012 summertime circulation anomaly over the Arctic region (i.e. more high pressure...
Citation