globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2014.01.013
论文题名:
Quantifying climate change in Huelmo mire (Chile, Northwestern Patagonia) during the Last Glacial Termination using a newly developed chironomid-based temperature model
作者: Massaferro J.; Larocque-Tobler I.; Brooks S.J.; Vandergoes M.; Dieffenbacher-Krall A.; Moreno P.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 399
起始页码: 214
结束页码: 224
语种: 英语
英文关键词: Antarctic Cold Reversal ; Chironomids ; Huelmo-Mascardi Cold Reversal ; Northern Patagonia ; Temperature reconstruction ; Younger Dryas
英文摘要: The development of quantitative temperature reconstructions in regions of paleoclimate interest is an important step for providing reliable temperature estimates in that region. Fossil chironomid assemblages have been studied in Patagonia showing great promise for reconstructing paleotemperatures; however there is still a lack of robust temperature inference models in that area.To contribute to the understanding of climate change, a transfer function using chironomids preserved in 46 lakes in Chile and Argentina was developed. The best performing model to infer the mean air temperature of the warmest month was a 3-component WA-PLS model with a coefficient of correlation (r2jack) of 0.56, a root mean square error of prediction (RMSEP) of 1.69°C and a maximum bias of 2.07°C. This model was applied to the chironomids preserved in the sediment of the Huelmo mire (41°31' S, 73°00' W), in the lake district of northwestern Patagonia. The reconstruction showed several cold spells (one at 13,200 to 13,000calyrBP and a cooling trend between 12,600 and 11,500calyrBP) associated with the Younger Dryas and/or Huelmo-Mascardi Cold Reversal (HMCR). Our findings support climate models proposing fast acting inter-hemispheric coupling mechanisms including the recently proposed bipolar atmospheric and/or bipolar ocean teleconnections rather than a bipolar see-saw model. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69408
Appears in Collections:过去全球变化的重建

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作者单位: CENAC/APN, Fagnano 244, 8400 Bariloche, Argentina; The L.A.K.E.S. Institute, Dreihubelweg 68, 3250 Lyss, Switzerland; Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; GNS Science, Lower Hutt 5040, New Zealand; School of Biology and Ecology, University of Maine, Orono, ME 04468, United States; Institute of Ecology and Biodiversity, Universidad de Chile, Santiago, Chile; Department of Ecological Sciences, Universidad de Chile, Santiago, Chile

Recommended Citation:
Massaferro J.,Larocque-Tobler I.,Brooks S.J.,et al. Quantifying climate change in Huelmo mire (Chile, Northwestern Patagonia) during the Last Glacial Termination using a newly developed chironomid-based temperature model[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,399
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