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www.clim-past-discuss.net/5/2411/2009/
doi:10.5194/cpd-5-2411-2009
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Winter and summer blocking variability in the North Atlantic region – evidence from long-term observational and proxy data from southwestern Greenland
1Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
2University of Bucharest, Faculty of Physics, Department of Atmospheric Physics, Bucharest, Romania
3Climed Norad, Zeicani 25, 040791, Bucharest, Romania
Abstract. We investigate the relationship between the North Atlantic atmospheric blocking and winter and summer temperature variability as derived from long-term observational and proxy records from southwestern Greenland. It is shown that during boreal winter warm (cold) conditions in southwestern Greenland are related with high (low) blocking activity in the Greenland-Scandinavian region. An index for the North Atlantic blocking is significantly correlated with an oxygen isotope record from Greenland ice cores suggesting a possible reconstruction of blocking variability in this region during past millennium. During summer, high (low) blocking activity in the Euro-Atlantic region is associated with cold (warm) conditions in southwestern Greenland. We conclude that historical temperature records as well as proxy data from Greenland can be used to obtain information related to multidecadal variation of summer blocking during past periods.
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Notice on Discussion StatusCitation: Rimbu, N. and Lohmann, G.: Winter and summer blocking variability in the North Atlantic region – evidence from long-term observational and proxy data from southwestern Greenland, Clim. Past Discuss., 5, 2411-2437, doi:10.5194/cpd-5-2411-2009, 2009. Bibtex EndNote Reference Manager XML
