气候变化领域集成服务门户(CCPortal): Estimating the extent of Antarctic summer sea ice during the Heroic Age of Antarctic exploration

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DOI	10.5194/tc-10-2721-2016
	Estimating the extent of Antarctic summer sea ice during the Heroic Age of Antarctic exploration
	Edinburgh T.; Day J.J.
发表日期	2016
ISSN	19940416
卷号	10 期号:6
英文摘要	In stark contrast to the sharp decline in Arctic sea ice, there has been a steady increase in ice extent around Antarctica during the last three decades, especially in the Weddell and Ross seas. In general, climate models do not to capture this trend and a lack of information about sea ice coverage in the pre-satellite period limits our ability to quantify the sensitivity of sea ice to climate change and robustly validate climate models. However, evidence of the presence and nature of sea ice was often recorded during early Antarctic exploration, though these sources have not previously been explored or exploited until now. We have analysed observations of the summer sea ice edge from the ship logbooks of explorers such as Robert Falcon Scott, Ernest Shackleton and their contemporaries during the Heroic Age of Antarctic Exploration (1897-1917), and in this study we compare these to satellite observations from the period 1989-2014, offering insight into the ice conditions of this period, from direct observations, for the first time. This comparison shows that the summer sea ice edge was between 1.0 and 1.7° further north in the Weddell Sea during this period but that ice conditions were surprisingly comparable to the present day in other sectors. © Author(s) 2016.
学科领域	climate change; climate modeling; exploration; ice cover; sea ice; spatiotemporal analysis; summer; trend analysis; Arctic; Ross Sea; Southern Ocean; Weddell Sea; Falconidae
语种	英语
scopus关键词	climate change; climate modeling; exploration; ice cover; sea ice; spatiotemporal analysis; summer; trend analysis; Arctic; Ross Sea; Southern Ocean; Weddell Sea; Falconidae
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119539
作者单位	Department of Meteorology, University of Reading, Reading, United Kingdom; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
推荐引用方式 GB/T 7714	Edinburgh T.,Day J.J.. Estimating the extent of Antarctic summer sea ice during the Heroic Age of Antarctic exploration[J],2016,10(6).
APA	Edinburgh T.,&Day J.J..(2016).Estimating the extent of Antarctic summer sea ice during the Heroic Age of Antarctic exploration.Cryosphere,10(6).
MLA	Edinburgh T.,et al."Estimating the extent of Antarctic summer sea ice during the Heroic Age of Antarctic exploration".Cryosphere 10.6(2016).