Sea salt sodium record from Talos Dome (East Antarctica) as a potential proxy of the Antarctic past sea ice extent.
Sea salt sodium record from Talos Dome (East Antarctica) as a potential proxy of the Antarctic past sea ice extent.
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DOI：
10.1016/j.chemosphere.2017.03.025
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发表时间：
2017-06
期刊：
影响因子：
8.8
通讯作者：
M. Severi;S. Becagli;L. Caiazzo;V. Ciardini;Ester Colizza;F. Giardi;K. Mezgec;C. Scarchilli
中科院分区：
文献类型：
--
作者：
M. Severi;S. Becagli;L. Caiazzo;V. Ciardini;Ester Colizza;F. Giardi;K. Mezgec;C. Scarchilli
近几十年来，南极海冰呈现出增加的趋势，但南大洋各区域之间存在很大的区域差异。在卫星时代（1979年以后），罗斯海和印度部分的海冰有所增加。在这里，我们提出了一个记录的ssNa+通量在塔罗斯穹地区在25年的时间跨度从1979年到2003年，表明该标记可以作为一个潜在的代理重建海冰范围在罗斯海和西太平洋至少在最近几十年。在发现了25年期间海冰范围最大值之间的正相关关系后，我们在TALDICE记录中使用了这种关系，以重建20世纪的海冰状况。我们的尝试性重建强调了从20世纪50年代开始海冰范围（SIE）的下降，并指出从20世纪60年代开始SIE的变化更大，上个世纪最大的海冰范围发生在20世纪90年代。
Antarctic sea ice has shown an increasing trend in recent decades, but with strong regional differences from one sector to another of the Southern Ocean. The Ross Sea and the Indian sectors have seen an increase in sea ice during the satellite era (1979 onwards). Here we present a record of ssNa+flux in the Talos Dome region during a 25-year period spanning from 1979 to 2003, showing that this marker could be used as a potential proxy for reconstructing the sea ice extent in the Ross Sea and Western Pacific Ocean at least for recent decades. After finding a positive relationship between the maxima in sea ice extent for a 25-year period, we used this relationship in the TALDICE record in order to reconstruct the sea ice conditions over the 20th century. Our tentative reconstruction highlighted a decline in the sea ice extent (SIE) starting in the 1950s and pointed out a higher variability of SIE starting from the 1960s and that the largest sea ice extents of the last century occurred during the 1990s.