DOI: 10.1175/JCLI-D-15-0354.1
Scopus记录号: 2-s2.0-84982676282
论文题名: Accumulation variability in the Antarctic Peninsula: The role of large-scale atmospheric oscillations and their interactions*
作者: Goodwin B.P. ; Mosley-Thompson E. ; Wilson A.B. ; Porter S.E. ; Roxana Sierra-Hernandez M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 7 起始页码: 2579
结束页码: 2596
语种: 英语
Scopus关键词: Atmospheric pressure
; Antarctic Peninsula
; Atmospheric circulation variability
; Atmospheric oscillations
; Environmental conditions
; High temporal resolution
; Pacific decadal oscillation
; Southern Annular Mode
; Southern oscillation index
; Ice
; accumulation rate
; atmospheric circulation
; ice core
; Pacific Decadal Oscillation
; Southern Oscillation
; temporal variation
; tropical meteorology
; Antarctic Peninsula
; Antarctica
; Bruce Plateau
; West Antarctica
英文摘要: A new ice core drilled in 2010 to bedrock from the Bruce Plateau (BP) on the Antarctic Peninsula (AP) provides a high temporal resolution record of environmental conditions in this region. The extremely high annual accumulation rate at this site facilitates analysis of the relationships between annual net accumulation An on the BP and large-scale atmospheric oscillations. Over the last ~45 years, An on the BP has been positively correlated with both the southern annular mode (SAM) and Southern Oscillation index (SOI). Extending this analysis back to 1900 reveals that these relationships are not temporally stable, and they exhibit major shifts in the late-1940s and themid-1970s that are contemporaneous with phase changes in the Pacific decadal oscillation (PDO). These varying multidecadal characteristics of the An-oscillation relationships are not apparent when only data from the post-1970s era are employed. Analysis of the longer ice core record reveals that the influence of the SAMon An depends not only on the phase of the SAMand SOI but also on the phase of the PDO. When the SAM's influence on BP An is reduced, such as under negative PDO conditions, BP An is modulated by variability in the tropical and subtropical atmosphere through its impacts on the strength and position of the circumpolar westerlies in the AP region. These results demonstrate the importance of using longer-term ice core-derived proxy records to test conventional views of atmospheric circulation variability in the AP region. © 2016 American Meteorological Society. 资助项目: BAS, British Antarctic Survey
; NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49966
Appears in Collections: 气候变化事实与影响
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作者单位: Byrd Polar and Climate Research Center, Department of Geography (Atmospheric Sciences Program), The Ohio State University, Columbus, OH, United States; Agency for Toxic Substances and Disease Registry, United States; Byrd Polar and Climate Research Center, The Ohio State University, Columbus, OH, United States
Recommended Citation:
Goodwin B.P.,Mosley-Thompson E.,Wilson A.B.,et al. Accumulation variability in the Antarctic Peninsula: The role of large-scale atmospheric oscillations and their interactions*[J]. Journal of Climate,2016-01-01,29(7)