A 308 year record of climate variability in West Antarctica
A 308 year record of climate variability in West Antarctica
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南极洲西部 308 年的气候变化记录
DOI：
10.1002/2013gl057782
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发表时间：
2013
影响因子：
5.2
通讯作者：
E. Wolff
中科院分区：
文献类型：
--
作者：
E. Thomas;T. Bracegirdle;J. Turner;E. Wolff
我们提出了一个新的稳定同位素记录埃尔斯沃思土地提供了一个有价值的308年（1702-2009年）的气候变化记录，从沿海西南极洲。该地点的气候变化受到热带太平洋海面温度和大气压力的强烈影响，并与当地海冰状况有关。记录显示，自1950年代后期以来，该地区一直在变暖，其幅度与南极半岛和南极洲中西部的变暖幅度相似;然而，这种变暖趋势并非独一无二。更显著的同位素变暖（和变冷）趋势发生在19世纪中期和18世纪，这表明目前，该地区人为气候驱动因素的影响尚未超过过去300年气候变率的自然范围。
We present a new stable isotope record from Ellsworth Land which provides a valuable 308 year record (1702–2009) of climate variability from coastal West Antarctica. Climate variability at this site is strongly forced by sea surface temperatures and atmospheric pressure in the tropical Pacific and related to local sea ice conditions. The record shows that this region has warmed since the late 1950s, at a similar magnitude to that observed in the Antarctic Peninsula and central West Antarctica; however, this warming trend is not unique. More dramatic isotopic warming (and cooling) trends occurred in the mid‐nineteenth and eighteenth centuries, suggesting that at present, the effect of anthropogenic climate drivers at this location has not exceeded the natural range of climate variability in the context of the past ~300 years.