Multi-proxy summer and winter precipitation recontruction for southern Africa over the last 200 years

Show simple item record Neukom, Raphael Nash, David J. Endfield, Georgina H. Grab, Stefan W. Grove, Craig A. Kelso, Clare Vogel, Coleen H. Zinke, Jens 2014-10-09T05:23:55Z 2014-10-09T05:23:55Z 2014-05
dc.description.abstract 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. en_US
dc.description.librarian hb2014 en_US
dc.description.sponsorship University of Brighton and AIMS/CSIRO/UWA en_US
dc.description.uri en_US
dc.identifier.citation Neulom, R, Nash, DJ, Endfield, GH, Grab, SW, Grove, CA, Kelso, C, Vogel, CH & Zinke, J 2014, 'Multi-proxy summer and winter precipitation recontruction for southern Africa over the last 200 years', Climate Dynamics, vol. 42, no. 9-10, pp. 2713-2726. en_US
dc.identifier.issn 0930-7575 (print)
dc.identifier.issn 1432-0894 (online)
dc.identifier.other 10.1007/s00382-013-1886-6
dc.language.iso en en_US
dc.publisher Springer en_US
dc.rights © Springer-Verlag Berlin Heidelberg 2013.The original publication is available at : en_US
dc.subject Precipitation reconstruction en_US
dc.subject Southern Africa en_US
dc.subject Palaeoclimate en_US
dc.subject Climate dynamics en_US
dc.subject Southern hemisphere en_US
dc.title Multi-proxy summer and winter precipitation recontruction for southern Africa over the last 200 years en_US
dc.type Postprint Article en_US

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