Climate variability during the last 1000 years inferred from Andean ice cores: A review of methodology and recent results
Climate variability during the last 1000 years inferred from Andean ice cores: A review of methodology and recent results
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从安第斯冰芯推断的过去 1000 年的气候变化：方法论和最新结果的回顾
DOI：
10.1016/j.palaeo.2008.03.054
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
U. Schotterer
中科院分区：
文献类型：
--
作者：
F. Vimeux;P. Ginot;M. Schwikowski;M. Vuille;G. Hoffmann;L. Thompson;U. Schotterer
安第斯冰芯调查大约在30年前开始。目前，从南纬0°到52°的10个钻孔点已经进行了古气候重建。大多数到达基岩的冰芯覆盖了过去的2万年，在过去的几个世纪到过去的1000年里，奎尔卡亚遗址的季节性分辨率都是如此。我们讨论了热带冰芯作为气候档案的潜力和局限性，这与重建南美洲过去1000年气候变化的合作努力有关。我们指出了南美洲冰芯的独特性，因为它们位于高海拔地区，以及它们的两个主要限制，这与(i)某些代用物在气候方面的解释和（ii）当季节周期不再确定时，相对较差的测年有关。此外，我们还概述了迄今为止用于分析热带气候动力学的代用指标。最后讨论了保存在冰芯中的ENSO、小冰期和20世纪的年代际变化记录，包括人类活动时期。
Andean ice core investigations began approximately 30 years ago. Today, 10 drilling sites, from 0° to 52°S, have been explored for paleoclimate reconstructions. Most of the ice cores reaching the bedrock cover the last 20,000 years with seasonal resolution over the last few centuries to the last 1000 years for the Quelccaya site. We discuss both the potential and the limitations of tropical ice cores as climate archives with regard to the collaborative effort to reconstruct past climate variations in South America over the last 1000 years. We point out the uniqueness of South American ice cores, due to their location at high altitude, and also their two main limitations, which are related to (i) the interpretation of certain proxies in terms of climate and (ii) the relatively poor dating when seasonal cycles are no longer resolved. In addition, we present an overview of the proxies that have been used so far to analyze tropical climate dynamics. Finally we discuss records of ENSO, the Little Ice Age and the 20th century decadal variability, including the anthropogenic period, which are all preserved in ice cores.