DOI: 10.1175/JCLI-D-12-00050.1
Scopus记录号: 2-s2.0-84865199074
论文题名: Decadal-interdecadal climate variability over antarctica and linkages to the tropics: Analysis of ice core, instrumental, and tropical proxy data
作者: Okumura Y.M. ; Schneider D. ; Deser C. ; Wilson R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 21 起始页码: 7421
结束页码: 7441
语种: 英语
Scopus关键词: Antarctica
; Decadal variability
; Inter-decadal variability
; Paleoclimates
; Teleconnections
; Atmospheric temperature
; Climatology
; Ice
; Surface properties
; Tropics
; advection
; atmospheric circulation
; climate change
; climate variation
; core analysis
; decadal variation
; ice core
; ice sheet
; nineteenth century
; paleoclimate
; proxy climate record
; teleconnection
; twentieth century
; Antarctica
; Atlantic Ocean
; Pacific Ocean
; Anthozoa
英文摘要: The Antarctic continent contains the majority of the global ice volume and plays an important role in a changing climate. The nature and causes of Antarctic climate variability are, however, poorly understood beyond interannual time scales due to the paucity of long, reliable meteorological observations. This study analyzes decadal-interdecadal climate variability over Antarctica using a network of annually resolved ice core records and various instrumental and tropical proxy data for the nineteenth and twentieth centuries. During the twentieth century, Antarctic ice core records indicate strong linkages to sea surface temperature (SST) variations in the tropical Pacific and Atlantic on decadal-interdecadal time scales. Antarctic surface temperature anomalies inferred from the ice cores are consistent with the associated changes in atmospheric circulation and thermal advection. A set of atmospheric general circulation model experiments supports the idea that decadal SST variations in the tropics force atmospheric teleconnections that affect Antarctic surface temperatures. When coral and other proxies for tropical climate are used to extend the analysis back to 1799, a similar Antarctic-tropical Pacific linkage is found, although the relationship is weaker during the first half of the nineteenth century. Over the past 50 years, a change in the phase of Pacific and Atlantic interdecadal variability may have contributed to the rapid warming of the Antarctic Peninsula and West Antarctica and related changes in ice sheet dynamics. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52135
Appears in Collections: 气候变化事实与影响
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作者单位: Institute for Geophysics, The University of Texas at Austin, Austin, TX, United States; Climate and Global Dynamics Division, NCAR, Boulder, CO, United States; School of Geography and Geosciences, University of St Andrews, St Andrews, United Kingdom
Recommended Citation:
Okumura Y.M.,Schneider D.,Deser C.,et al. Decadal-interdecadal climate variability over antarctica and linkages to the tropics: Analysis of ice core, instrumental, and tropical proxy data[J]. Journal of Climate,2012-01-01,25(21)