气候变化领域集成服务门户(CCPortal): A 2680-year record of sea ice extent in the Ross Sea and the associated atmospheric circulation derived from the DT401 East Antarctic ice core

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DOI	10.1007/s11430-015-5125-3
	A 2680-year record of sea ice extent in the Ross Sea and the associated atmospheric circulation derived from the DT401 East Antarctic ice core
	Li ChuanJin; Ren JiaWen; Xiao CunDe; Hou ShuGui; Ding MingHu; Qin DaHe
发表日期	2015
ISSN	1674-7313
起始页码	2090
结束页码	2102
卷号	58 期号:11
英文摘要	Long time series of Antarctic sea ice extent (SIE) are important for climate research and model forecasting. A historic ice extent in the Ross Sea in early austral winter was rebuilt through sea salt ions in the DT401 ice core in interior East Antarctica. El Nio-Southern Oscillation (ENSO) had a significant influence on the sea salt deposition in DT401 through its influence on the Ross Sea SIE and the transport of sea salt inland. Spectral analysis also supported the influence of ENSO with a significant 2-6 a periodicity band. In addition, statistically significant decadal (10 a) and pentadecadal (50-70 a) periodicities suggested the existence of a teleconnection from the Pacific decadal oscillation (PDO), which originated from sea surface temperature anomalies in the tropical Pacific Ocean. The first eigenvector of the empirical orthogonal function analysis (EOF1) showed lower values during the Medieval Warm Period (MWP), while higher values were found in the Little Ice Age (LIA). A higher frequency of ENSO events were found in the cold climatic stage. The post 1800 AD period was occupied by significant fluctuations of the EOF1, and PDO may be one of the influencing factors. The EOF1 values showed moderate fluctuations from 680 BC to 1000 AD, showing that the climate was relatively stable in this period.
英文关键词	sea salt ions; sea ice extent; ENSO; DT401; Eastern Antarctica
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
来源期刊	SCIENCE CHINA-EARTH SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158570
作者单位	Li, CJ (corresponding author), Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Li ChuanJin,Ren JiaWen,Xiao CunDe,et al. A 2680-year record of sea ice extent in the Ross Sea and the associated atmospheric circulation derived from the DT401 East Antarctic ice core[J],2015,58(11).
APA	Li ChuanJin,Ren JiaWen,Xiao CunDe,Hou ShuGui,Ding MingHu,&Qin DaHe.(2015).A 2680-year record of sea ice extent in the Ross Sea and the associated atmospheric circulation derived from the DT401 East Antarctic ice core.SCIENCE CHINA-EARTH SCIENCES,58(11).
MLA	Li ChuanJin,et al."A 2680-year record of sea ice extent in the Ross Sea and the associated atmospheric circulation derived from the DT401 East Antarctic ice core".SCIENCE CHINA-EARTH SCIENCES 58.11(2015).