| Interdecadal change in the Antarctic Circumpolar Wave during 1951–2010 |
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| 作者姓名： | 卞林根 林祥 |
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| 作者单位： | State Key Laboratory of Weather Disaster,Chinese Academy of Meteorological Sciences |
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| 基金项目： | supported by Project of the Antarctic Environment Investigation and Assessment of China,SOA (Grant No. JDZX2011-2015) |
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| 摘 要： | 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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| 关 键 词： | Antarctic circumploar wave variability interdecadal change subperiods |
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