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Attribution of the causes for the recent large changes in the Arctic, including sea ice, temperatures, and biological impacts, is formidable task because it is difficult to separate the signal due to anthropogenic greenhouse gases from the background of large natural climate variability. However, initial observational and modeling evidence of an anthropogenic influence in the Arctic has emerged over the last decade. I address this issue through application of methodological, evidentiary, and performance scientific standards which consist of three parts: is change occurring, which is the most consistent among a range of possible causes, and are these causes predictive? At the end of the 20th and beginning of the 21st century Arctic-wide warming is distinctive from the regional patterns of temperature anomalies that were seen earlier in the 20th century. IPCC model simulation results for the 1930s warm and 1960s cold temperature anomalies are consistent with natural climate variability, but all models show the influence of external forcing from greenhouse gases on warm temperature anomalies in the 1990s, and projections for the future. The recent sea ice reduction of summer 2007 Arctic by 40% compared to its 1980s extent is particularly scary and suggests that other surprises may be in store for the Arctic climate system. Sea ice loss appears to be on a fast track relative to consensus projections by IPCC models. This dramatic sea ice reduction was likely caused by a combination of greenhouse gas increases, fortuitous timing in the natural variability of the atmospheric general circulation, and positive feedbacks associated with a reduction in sea ice.

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References

  • Chapman WL, Walsh JE (2007) Simulations of arctic temperature and pressure by global coupled models. J Climate, 20, 609–632

    Article  Google Scholar 

  • Feldstein SB (2002) The recent trend and variance increases of the annular mode. J Climate, 15, 88–94

    Article  Google Scholar 

  • Gascard J-C et al. (2008) Exploring arctic transpolar drift during dramatic sea ice retreat. Eos Trans AGU, 89(3), 21

    Article  Google Scholar 

  • Holland MM, Bitz CM, Tremblay B (2006) Future abrupt reductions in the summer Arctic Seaice. Geophys Res Lett, 33, L23503, doi: 10.1029/2006GL028024

    Article  Google Scholar 

  • IPCC 2007, Climate change (2007) Synthesis Report, Summary for Policymakers, 22 pp

    Google Scholar 

  • Maslanik J, Drobot S, Fowler C, Emery W, Barry R (2007) On the arctic climate paradox and the continuing role of atmospheric circulation in affecting sea ice conditions. Geophys Res Lett, 34, L03711, doi: 10.1029/2006GL028269

    Article  Google Scholar 

  • Nghiem SV, Rigor IG, Perovich DK, Clemente-Colón P, Weatherly JW, Neumann G (2007) Rapid reduction of Arctic perennial sea ice. Geophys Res Lett, 34, L19504, doi: 10.1029/2007GL031138

    Article  Google Scholar 

  • Overland JE, Wang M (2005) The arctic climate paradox: the recent decrease of the arcticoscillation. Geophys Res Lett, 32, doi: 10.1029/2004GL021752

    Google Scholar 

  • Overland JE, Wang M, Salo S (2008) The recent arctic warm period. Tellus (in preparation)

    Google Scholar 

  • Palmer TN (1999) A nonlinear dynamical perspective on climate prediction. J Climate, 12, 575–591

    Article  Google Scholar 

  • Rigor IG, Wallace JM (2004) Variations in the age of Arctic Sea-ice and summer sea-ice extent. Geophys Res Lett, 31, L09401, doi: 10.1029/2004GL019492

    Article  Google Scholar 

  • Serreze MC, Walsh JE, Chapin FS III, Osterkamp T, Dyurgerov M, Romanovsky V, Oechel, J Morison WC, Zhang T, Barry RG (2000) Observational evidence of recent change in the northern high-latitude environment. Climatic Change, 46, 159–207

    Article  Google Scholar 

  • Serreze MC, Holland MM, Stroeve S (2007) Perspectives on the arctic's shrinking sea-ice cover. Science, 315, 1533–1536

    Article  Google Scholar 

  • Stroeve J, Holland MM, Meier W, Scambos T, Serreze M (2007) Arctic Sea ice decline, Faster than forecast. Geophys Res Lett, 24, L09501, doi: 10.1029/2007GL029703

    Article  Google Scholar 

  • Stroeve J, Serreze M, Drobot S, Gearheard S, Holland M, Maslanik J, Meier W, Scambos T (2008) Arctic Sea ice extent plummets in 2007. Eos Trans AGU, 89(2), 13

    Article  Google Scholar 

  • Wang M, Overland JE, Kattsov V, Walsh JE, Zhang X, Pavlova T (2007) Intrinsic versus forced variation in coupled climate model simulations over the arctic during the 20th century. J Climate, 20, 1093–1107

    Article  Google Scholar 

  • Wood KR, Overland JE (2006) Climate lessons from the first international polar year. Bull Am Meteorol Soc, 87, 1685–1697

    Article  Google Scholar 

Download references

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Correspondence to James E. Overland .

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Overland, J.E. (2009). The case for global warming in the Arctic. In: Nihoul, J.C.J., Kostianoy, A.G. (eds) Influence of Climate Change on the Changing Arctic and Sub-Arctic Conditions. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9460-6_3

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