气候变化领域集成服务门户(CCPortal): Calcium and sodium concentrations of the Talos Dome ice core, Antarctica

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DOI	https://doi.org/10.1594/PANGAEA.833044
	Calcium and sodium concentrations of the Talos Dome ice core, Antarctica
	Schüpbach; Simon; Federer; Urs; Kaufmann; Patrik R; Albani; Samuel; Barbante; Carlo; Stocker; Thomas F; Fischer; Hubertus
发布日期	2014-05-28
数据集类型	dataset
英文简介	In this study we report on new non-sea salt calcium (nssCa2+, mineral dust proxy) and sea salt sodium (ssNa+, sea ice proxy) records along the East Antarctic Talos Dome deep ice core in centennial resolution reaching back 150 thousand years (ka) before present. During glacial conditions nssCa2+ fluxes in Talos Dome are strongly related to temperature as has been observed before in other deep Antarctic ice core records, and has been associated with synchronous changes in the main source region (southern South America) during climate variations in the last glacial. However, during warmer climate conditions Talos Dome mineral dust input is clearly elevated compared to other records mainly due to the contribution of additional local dust sources in the Ross Sea area. Based on a simple transport model, we compare nssCa2+ fluxes of different East Antarctic ice cores. From this multi-site comparison we conclude that changes in transport efficiency or atmospheric lifetime of dust particles do have a minor effect compared to source strength changes on the large-scale concentration changes observed in Antarctic ice cores during climate variations of the past 150 ka. Our transport model applied on ice core data is further validated by climate model data.
空间范围	Latitude: -72.817000 * Longitude: 159.183000
时间范围	2005-01-01T00:00:00 - 2005-01-01T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	冰冻圈
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/213767
推荐引用方式 GB/T 7714	Schüpbach,Simon,Federer,et al. Calcium and sodium concentrations of the Talos Dome ice core, Antarctica.2014-05-28.https://doi.org/10.1594/PANGAEA.833044.