globalchange  > 影响、适应和脆弱性
DOI: 10.5194/tc-7-263-2013
Scopus记录号: 2-s2.0-84886680815
论文题名:
Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades
作者: Roberts J; L; , Moy A; D; , Van Ommen T; D; , Curran M; A; J; , Worby A; P; , Goodwin I; D; , Inoue M
刊名: Cryosphere
ISSN: 19940416
出版年: 2013
卷: 7, 期:1
起始页码: 263
结束页码: 273
语种: 英语
英文摘要: A borehole temperature record from the Mill Island (East Antarctica) icecap reveals a large surface warming signal manifested as a 0.75K temperature difference over the approximate 100m depth in the zone of zero annual amplitude below the seasonally varying zone. The temperature profile shows a break in gradient around 49m depth, which we model with inverse numerical simulations, indicating that surface warming started around the austral summer of 1980/81AD±5 yr. This warming of approximately 0.37K per decade is consistent with trends seen in both instrumental and other reconstructions for Antarctica and, therefore, suggests that regional- rather than local-scale processes are largely responsible. Alteration of the surface energy budget arising from changes in radiation balances due to local cloud, the amount of liquid deposition and local air temperatures associated with altered air/sea exchanges also potentially plays a role at this location due to the proximity of the Shackleton Ice Shelf and sea-ice zone. © Author(s) 2013.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75007
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: Department of Sustainability, Environment, Water, Population and Communities, Australian Antarctic Division, Channel Highway, Kingston, TAS 7050, Australia; Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, TAS 7001, Australia; CSIRO Marine and Atmospheric Research, Castray Esplanade, Hobart, TAS 7000, Australia; Marine Climate Risk Group, Department of Environment and Geography, Macquarie University, Eastern Road, NSW, 2109, Australia; Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, TAS 7001, Australia

Recommended Citation:
Roberts J,L,, Moy A,et al. Borehole temperatures reveal a changed energy budget at Mill Island, East Antarctica, over recent decades[J]. Cryosphere,2013-01-01,7(1)
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