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Southern hemisphere atmospheric circulation: impacts on Antarctic climate and reconstructions from Antarctic ice core data

机译：南半球大气环流：对南极气候的影响和南极冰芯数据的重建

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摘要

The atmospheric circulation patterns in the Southern Hemisphere have had a significant impact on the climate of the Antarctic and there is much evidence that these circulation patterns have changed in the recent past. This change is thought to have contributed to the warming trend observed at the Antarctic Peninsula over the last 50 years—one of the largest trends observed in this period on the planet. The trends associated with the continental Antarctic climate are less clear but are likely to be impacted less directly by atmospheric circulation changes. The circulation changes can be put into the context of longer timescales by considering atmospheric circulation reconstructions that have been performed using data from Antarctic ice cores. In this review paper we look at the main body of work examining: Antarctic climate trends; the understanding and impact of atmospheric circulation of the mid- to high-latitudes of the Southern Hemisphere; and the usefulness and reliability of atmospheric circulation reconstructions from Antarctic ice core data. Finally, beyond several of the more quantitative reconstructions, it is deemed that an assessment of their consistency is not possible due to the variety of circulation characteristics that the various reconstructions consider.
机译：南半球的大气环流方式对南极洲的气候产生了重大影响，并且有很多证据表明，这些环流方式在最近的过去已经发生了变化。人们认为，这种变化是过去50年来在南极半岛观测到的变暖趋势的原因-这是地球上这一时期观测到的最大趋势之一。与大陆南极气候有关的趋势不太清楚，但可能受到大气环流变化的直接影响较小。通过考虑使用来自南极冰芯的数据进行的大气环流重建，可以将环流变化置于更长的时间尺度内。在这篇综述文件中，我们着眼于研究的主体：南极气候趋势；对南半球中高纬度大气环流的理解和影响；以及从南极冰芯数据中重建大气环流的有用性和可靠性。最后，除了几个更定量的重构之外，由于各种重构所考虑的各种循环特性，人们认为无法对其一致性进行评估。

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