globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-013-1886-6
Scopus记录号: 2-s2.0-84899974329
论文题名:
Multi-proxy summer and winter precipitation reconstruction for southern Africa over the last 200 years
作者: Neukom R.; Nash D.J.; Endfield G.H.; Grab S.W.; Grove C.A.; Kelso C.; Vogel C.H.; Zinke J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期:2017-09-10
起始页码: 2713
结束页码: 2726
语种: 英语
英文关键词: Climate dynamics ; Palaeoclimate ; Precipitation reconstruction ; Southern Africa ; Southern hemisphere
英文摘要: This study presents the first consolidation of palaeoclimate proxy records from multiple archives to develop statistical rainfall reconstructions for southern Africa covering the last two centuries. State-of-the-art ensemble reconstructions reveal multi-decadal rainfall variability in the summer and winter rainfall zones. A decrease in precipitation amount over time is identified in the summer rainfall zone. No significant change in precipitation amount occurred in the winter rainfall zone, but rainfall variability has increased over time. Generally synchronous rainfall fluctuations between the two zones are identified on decadal scales, with common wet (dry) periods reconstructed around 1890 (1930). A strong relationship between seasonal rainfall and sea surface temperatures (SSTs) in the surrounding oceans is confirmed. Coherence among decadal-scale fluctuations of southern African rainfall, regional SST, SSTs in the Pacific Ocean and rainfall in south-eastern Australia suggest SST-rainfall teleconnections across the southern hemisphere. Temporal breakdowns of the SST-rainfall relationship in the southern African regions and the connection between the two rainfall zones are observed, for example during the 1950s. Our results confirm the complex interplay between large-scale teleconnections, regional SSTs and local effects in modulating multi-decadal southern African rainfall variability over long timescales. © 2013 Springer-Verlag Berlin Heidelberg.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54526
Appears in Collections:过去全球变化的重建

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作者单位: Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland; Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, 8903 Birmensdorf, Switzerland; School of Environment and Technology, University of Brighton, Lewes Road, Brighton, BN2 4GJ, United Kingdom; School of Geography, Archaeology and Environmental Studies, University of the Witwatersrand (Wits), Private Bag 3, Johannesburg, 2050, South Africa; School of Geography, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom; Department of Marine Geology, NIOZ Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel, Netherlands; Department of Geography, Environmental Management and Energy Studies, University of Johannesburg, PO Box 524, Auckland Park, 2006, South Africa; Department of Geography, Geoinformatics and Meteorology, University of Pretoria, Hatfield, Private Bag X20, Pretoria, 0028, South Africa; School of Earth and Environment, University of Western Australia Oceans Institute, 35 Stirling Highway, Crawley, WA, 6009, Australia; Australian Institute of Marine Science, Nedlands, WA, 6009, Australia

Recommended Citation:
Neukom R.,Nash D.J.,Endfield G.H.,et al. Multi-proxy summer and winter precipitation reconstruction for southern Africa over the last 200 years[J]. Climate Dynamics,2014-01-01,42(2017-09-10)
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