DOI: 10.5194/cp-13-231-2017
Scopus记录号: 2-s2.0-85015309253
论文题名: Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperature reconstruction
作者: Turney C.S.M. ; Fogwill C.J. ; Palmer J.G. ; Van Sebille E. ; Thomas Z. ; McGlone M. ; Richardson S. ; Wilmshurst J.M. ; Fenwick P. ; Zunz V. ; Goosse H. ; Wilson K.-J. ; Carter L. ; Lipson M. ; Jones R.T. ; Harsch M. ; Clark G. ; Marzinelli E. ; Rogers T. ; Rainsley E. ; Ciasto L. ; Waterman S. ; Thomas E.R. ; Visbeck M.
刊名: Climate of the Past
ISSN: 18149324
出版年: 2017
卷: 13, 期: 3 起始页码: 231
结束页码: 248
语种: 英语
英文摘要: Occupying about 14% of the world's surface, the Southern Ocean plays a fundamental role in ocean and atmosphere circulation, carbon cycling and Antarctic ice-sheet dynamics. Unfortunately, high interannual variability and a dearth of instrumental observations before the 1950s limits our understanding of how marine-atmosphere-ice domains interact on multi-decadal timescales and the impact of anthropogenic forcing. Here we integrate climate-sensitive tree growth with ocean and atmospheric observations on southwest Pacific subantarctic islands that lie at the boundary of polar and subtropical climates (52-54°S). Our annually resolved temperature reconstruction captures regional change since the 1870s and demonstrates a significant increase in variability from the 1940s, a phenomenon predating the observational record. Climate reanalysis and modelling show a parallel change in tropical Pacific sea surface temperatures that generate an atmospheric Rossby wave train which propagates across a large part of the Southern Hemisphere during the austral spring and summer. Our results suggest that modern observed high interannual variability was established across the mid-twentieth century, and that the influence of contemporary equatorial Pacific temperatures may now be a permanent feature across the mid- to high latitudes. © Author(s) 2017. 资助项目: ARC, Australian Research Council
; ARC, Australian Research Council
; ARC, Australian Research Council
; ARC, Australian Research Council
; UNSW, University of New South Wales
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48936
Appears in Collections: 气候变化与战略
There are no files associated with this item.
Recommended Citation:
Turney C.S.M.,Fogwill C.J.,Palmer J.G.,et al. Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperature reconstruction[J]. Climate of the Past,2017-01-01,13(3)