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DOI	10.1016/j.quascirev.2018.11.030
	Investigating the 8.2 ka event in northwestern Madagascar: Insight from data–model comparisons
	Voarintsoa N.R.G.; Matero I.S.O.; Railsback L.B.; Gregoire L.J.; Tindall J.; Sime L.; Cheng H.; Edwards R.L.; Brook G.A.; Kathayat G.; Li X.; Michel Rakotondrazafy A.F.; Madison Razanatseheno M.O.
发表日期	2019
ISSN	0277-3791
起始页码	172
结束页码	186
卷号	204
英文摘要	The 8.2 ka event is a well-known cooling event in the Northern Hemisphere, but is poorly understood in Madagascar. Here, we compare paleoclimate data and outputs from paleoclimate simulations to better understand it. Records from Madagascar suggest two distinct sub-events (8.3 ka and 8.2 ka), that seem to correlate with records from northern high latitude. This could indicate causal relationships via changes in the Atlantic Meridional Overturning Circulation (AMOC) with changes in moisture source's δ18O, and changes in the mean position of the Inter-Tropical Convergence Zone (ITCZ), as climate modelling suggests. These two sub-events are also apparent in other terrestrial records, but the climatic signals are different. The prominent 8.2 ka sub-event records a clear antiphase relationship between the northern and southern hemisphere monsoons, whereas such relationship is less evident during the first 8.3 ka sub-event. Data–model comparison have also shown a mismatch between the paleoclimate data and the model outputs, the causes of which are more or less understood and may lie in the proxies, in the model, or in both data and model. Knowing that paleoclimate proxies and climate models produce different sets of variables, further research is needed to improve the data–model comparison approach, so that both paleoclimate data and paleoclimate models will better predict the likely climate status of a region during a specified time in the past with minimal uncertainties. © 2018 Elsevier Ltd
英文关键词	8.2 ka event; AMOC; Data–model comparisons; Holocene; ITCZ–Monsoon; Madagascar; Paleoclimate modeling; Speleothems; Stable isotopes
语种	英语
scopus关键词	Atmospheric thermodynamics; Oceanography; 8.2 ka event; AMOC; Holocenes; Madagascar; Model comparison; Paleoclimates; Speleothems; Stable isotopes; Climate models; climate modeling; comparative study; Holocene; intertropical convergence zone; meridional circulation; Northern Hemisphere; paleoclimate; proxy climate record; speleothem; stable isotope; Atlantic Ocean; Madagascar
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152050
作者单位	Department of Geology, University of Georgia, Athens, GA 30602-2501, United States; University of Leeds, School of Earth and Environment, Leeds, LS2 9JT, United Kingdom; Ice Dynamics and Paleoclimate, British Antarctic Survey, Cambridge, CB3 0ET, United Kingdom; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China; Department of Earth Sciences, University of Minnesota, Minneapolis, MN 55455, United States; Department of Geography, University of Georgia, Athens, GA 30602-2502, United States; Mention Sciences de la Terre et de l'Environnement, Domaine Sciences et Technologie, Université d'Antananarivo, Madagascar
推荐引用方式 GB/T 7714	Voarintsoa N.R.G.,Matero I.S.O.,Railsback L.B.,等. Investigating the 8.2 ka event in northwestern Madagascar: Insight from data–model comparisons[J],2019,204.
APA	Voarintsoa N.R.G..,Matero I.S.O..,Railsback L.B..,Gregoire L.J..,Tindall J..,...&Madison Razanatseheno M.O..(2019).Investigating the 8.2 ka event in northwestern Madagascar: Insight from data–model comparisons.Quaternary Science Reviews,204.
MLA	Voarintsoa N.R.G.,et al."Investigating the 8.2 ka event in northwestern Madagascar: Insight from data–model comparisons".Quaternary Science Reviews 204(2019).