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Interdecadal change in the Antarctic Circumpolar Wave during 1951–2010

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Abstract

In this study, we defined an index of the Antarctic Circumploar Wave (ACW) and analyzed its variability for the period 1951–2010. A regime shift of the circumpolar westerly in the Southern Ocean and an interdecadal change of the ACW, which occurred around the mid-1970s, were identified. Associated with these changes, the variations of the ACW show three distinct sub-periods: 1951–1973, 1974–1980, and 1981–2010. They are characterized by different speeds, amplitudes, and wave structures. We briefly investigated possible mechanisms responsible for the different behaviors of the ACW during the three periods.

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Correspondence to Lingen Bian  (卞林根).

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Bian, L., Lin, X. Interdecadal change in the Antarctic Circumpolar Wave during 1951–2010. Adv. Atmos. Sci. 29, 464–470 (2012). https://doi.org/10.1007/s00376-011-1143-z

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  • DOI: https://doi.org/10.1007/s00376-011-1143-z

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