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Xiangdong Zhang, J. Walsh, Jing Zhang, U. Bhatt, M. Ikeda (2004)
Climatology and Interannual Variability of Arctic Cyclone Activity: 1948–2002Journal of Climate, 17
W. Walczowski, J. Piechura (2007)
Pathways of the Greenland Sea warmingGeophysical Research Letters, 34
Alfred Wegener Institute for Polar and Marine Research, D-27570 Bremerhaven
O. Skagseth (2008)
Arctic‐Subartctic Ocean Fluxes: Defining the Role of the Northern Seas in ClimateGeophys. Res. Lett.
P. Skeie (2000)
Meridional flow variability over the Nordic Seas in the Arctic oscillation frameworkGeophysical Research Letters, 27
R. Preisendorfer, C. Mobley (1988)
Principal Component Analysis in Meteorology and Oceanography
R. Graversen, T. Mauritsen, M. Tjernström, E. Källén, G. Svensson (2008)
Vertical structure of recent Arctic warmingNature, 451
J. Wallace, Catherine Smith, C. Bretherton (1992)
Singular value decomposition of wintertime sea surface temperature and 500-mb height anomaliesJournal of Climate, 5
D. Thompson, J. Wallace (1998)
The Arctic oscillation signature in the wintertime geopotential height and temperature fieldsGeophysical Research Letters, 25
T. Osborn (2004)
Simulating the winter North Atlantic Oscillation: the roles of internal variability and greenhouse gas forcingClimate Dynamics, 22
G. North, T. Bell, Robert Cahalan, F. Moeng (1982)
Sampling Errors in the Estimation of Empirical Orthogonal FunctionsMonthly Weather Review, 110
C. Deser, H. Teng (2008)
Evolution of Arctic sea ice concentration trends and the role of atmospheric circulation forcing, 1979–2007Geophysical Research Letters, 35
I. Rigor, J. Wallace, R. Colony (2002)
Response of Sea Ice to the Arctic OscillationJournal of Climate, 15
J. Comiso, Claire Parkinson, Robert Gersten, L. Stock (2008)
Accelerated decline in the Arctic sea ice coverGeophysical Research Letters, 35
(2005)
MSLP composite for the months with (a) positive and (b) negative ARP index extremes during 2001/02-2005/06 winters, and (c) their differences (positive minus negative)
J. Maslanik, S. Drobot, C. Fowler, W. Emery, R. Barry (2007)
On the Arctic climate paradox and the continuing role of atmospheric circulation in affecting sea ice conditionsGeophysical Research Letters, 34
R. Kistler, E. Kalnay, W. Collins, S. Saha, G. White, J. Woollen, M. Chelliah, W. Ebisuzaki, M. Kanamitsu, V. Kousky, H. Dool, R. Jenne, M. Fiorino (2001)
The NCEP–NCAR 50-Year Reanalysis: Monthly Means CD-ROM and DocumentationBulletin of the American Meteorological Society, 82
W. Walczowski, J. Piechura (2007)
Pathways of the Greenland Sea warmingJ. Clim., 34
D. Perovich, J. Richter-Menge, K. Jones, B. Light (2008)
Sunlight, water, and ice: Extreme Arctic sea ice melt during the summer of 2007Geophysical Research Letters, 35
Xiangdong Zhang, M. Ikeda, J. Walsh (2003)
Arctic Sea Ice and Freshwater Changes Driven by the Atmospheric Leading Mode in a Coupled Sea Ice-Ocean ModelJournal of Climate, 16
Ø. Skagseth, T. Furevik, R. Ingvaldsen, H. Loeng, K. Mork, K. Orvik, V. Ozhigin (2008)
Volume and Heat Transports to the Arctic Ocean Via the Norwegian and Barents Seas
N. Keenlyside, M. Latif, J. Jungclaus, L. Kornblueh, E. Roeckner (2008)
Advancing decadal-scale climate prediction in the North Atlantic sectorNature, 453
Arctic climate system change has accelerated tremendously since the beginning of this century, and a strikingly extreme sea‐ice loss occurred in summer 2007. However, the greenhouse‐gas‐emissions forcing has only increased gradually and the driving role in Arctic climate change of the positively‐polarized Arctic/North Atlantic Oscillation (AO/NAO) trend has substantially weakened. Although various contributing factors have been examined, the fundamental physical process, which orchestrates these contributors to drive the acceleration and the latest extreme event, remains unknown. We report on drastic, systematic spatial changes in atmospheric circulations, showing a sudden jump from the conventional tri‐polar AO/NAO to an unprecedented dipolar leading pattern, following accelerated northeastward shifts of the AO/NAO centers of action. These shifts provide an accelerating impetus for the recent rapid Arctic climate system changes, perhaps shedding light on recent arguments about a tipping point of global‐warming‐forced climate change in the Arctic. The radical spatial shift is a precursor to the observed extreme change event, demonstrating skilful information for future prediction.
Geophysical Research Letters – Wiley
Published: Nov 1, 2008
Keywords: ; ;
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