globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2017.08.011
Scopus记录号: 2-s2.0-85029459190
论文题名:
The dynamic relationship between temperate and tropical circulation systems across South Africa since the last glacial maximum
作者: Chase B.M.; Chevalier M.; Boom A.; Carr A.S.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2017
卷: 174
起始页码: 54
结束页码: 62
语种: 英语
英文关键词: Climate dynamics ; Holocene ; Hyrax middens ; Last glacial maximum ; Palaeoclimate ; South Africa ; Stable isotopes
Scopus关键词: Climate change ; Climatology ; Glacial geology ; Precipitation (meteorology) ; Rain ; Climate dynamics ; Holocenes ; Hyrax middens ; Last Glacial Maximum ; Palaeoclimate ; South Africa ; Stable isotopes ; Tropics ; Procaviidae
英文摘要: A fundamental and long-standing question of southern African palaeoclimatology is the way tropical and temperate climate system dynamics have influenced rainfall regimes across the subcontinent since the Last glacial maximum. In this paper, we analyse a selection of recently published palaeoclimate reconstructions along a southwest-northeast transect across South Africa. These records span the last 22,000 years, and encompass the transition between the region's winter and summer rainfall zones. In synthesis, these records confirm broad elements of the dominant paradigm, which proposes an inverse coeval relationship between temperate and tropical systems, with increased precipitation in the winter (summer) rainfall zone during glacial (interglacial) periods. Revealed, however, is a substantially more complex dynamic, with millennial-scale climate change events being strongly – even predominantly – influenced by the interaction and combination of temperate and tropical systems. This synoptic forcing can create same sign anomalies across the South African rainfall zones, contrary to expectations based on the classic model of phase opposition. These findings suggest a new paradigm for the interpretation of southern African palaeoenvironmental records that moves beyond simple binary or additive influences of these systems. © 2017
资助项目: Funding was received from the European Research Council (ERC) under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC Starting Grant “HYRAX”, grant agreement no. 258657.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59093
Appears in Collections:过去全球变化的重建

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作者单位: Centre National de La Recherche Scientifique, UMR 5554, Institut des Sciences de L'Evolution-Montpellier, Université Montpellier, Bat.22, CC061, Place Eugène Bataillon, Montpellier, France; Institute of Earth Surface Dynamics Geopolis, University of Lausanne, Quartier UNIL-Mouline, Bâtiment Géopolis, Lausanne, Switzerland; School of Geography, Geology and the Environment, University of Leicester, Leicester, United Kingdom

Recommended Citation:
Chase B.M.,Chevalier M.,Boom A.,et al. The dynamic relationship between temperate and tropical circulation systems across South Africa since the last glacial maximum[J]. Quaternary Science Reviews,2017-01-01,174
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