气候变化领域集成服务门户(CCPortal): The impact of proxy selection strategies on a millennium-long ensemble of hydroclimatic records in Monsoon Asia

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DOI	10.1016/j.quascirev.2019.105917
	The impact of proxy selection strategies on a millennium-long ensemble of hydroclimatic records in Monsoon Asia
	Schneider L.; Ljungqvist F.C.; Yang B.; Chen F.; Chen J.; Li J.; Hao Z.; Ge Q.; Talento S.; Osborn T.J.; Luterbacher J.
发表日期	2019
ISSN	0277-3791
卷号	223
英文摘要	Large-scale palaeoclimate reconstructions can be very sensitive to the proxy records they are based on, and hence to the criteria used to select proxy records. Data selection rarely follows objective criteria that are applicable to all types of proxies, including both low- and high-resolution records. Thus, there is a need for a uniform and transparent approach to assess the suitability of input proxy data for a reconstruction. Here, we develop classification criteria that are applicable to multiple proxy types and evaluate different selection strategies using a network of 62 millennium-long terrestrial hydroclimate proxy records from Monsoon Asia. Our results reveal that robust evidence for a coherent climate signal and high dating accuracy are important criteria for benchmarking the suitability of each proxy record. We determine these criteria by reviewing the literature for each record (rather than screening against instrumental data). We show that the proposed selection approach can yield a network with a stronger common signal. By evaluating the uncertainty and centennial variability of composite reconstructions, from differently selected subsets of the proxy network, it appears beneficial to use suitable proxies stemming from different archives, as well as having a dense network of proxy sites. We suggest that future large-scale palaeoclimate reconstructions might be improved by evaluating proxy networks according to the universal categories presented here and, if indicated, removing less suitable records. This will strengthen the climate signal in the final reconstruction, allowing more precise inferences about past climate variability and more robust comparisons with climate model simulations. © 2019 Elsevier Ltd
英文关键词	Data treatment; Eastern Asia; Expert assessment; Holocene; Large-scale reconstruction; Low resolution; Multi-proxy; Paleoclimatology; Past millennium; Spatial decorrelation length
语种	英语
scopus关键词	Atmospheric thermodynamics; Climatology; Repair; Data treatment; Eastern Asia; Expert assessment; Holocenes; Low resolution; Multi proxies; Paleoclimatology; Past millennium; Spatial decorrelation; Climate models; accuracy assessment; benchmarking; climate modeling; climate signal; ensemble forecasting; environmental assessment; historical record; Holocene; hydrometeorology; long-term change; monsoon; paleoclimate; proxy climate record; reconstruction; resolution
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/151733
作者单位	Department of Geography, Climatology, Climate Dynamics and Climate Change, Justus Liebig University of Giessen, Germany; Department of History, Stockholm University, Stockholm, Sweden; Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Swedish Collegium for Advanced Study, Uppsala, Sweden; Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; Key Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China; Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Science, Northwest University, Xi'an, Shaanxi 710127, China; State Key Laboratory of Loess and Quatern...
推荐引用方式 GB/T 7714	Schneider L.,Ljungqvist F.C.,Yang B.,et al. The impact of proxy selection strategies on a millennium-long ensemble of hydroclimatic records in Monsoon Asia[J],2019,223.
APA	Schneider L..,Ljungqvist F.C..,Yang B..,Chen F..,Chen J..,...&Luterbacher J..(2019).The impact of proxy selection strategies on a millennium-long ensemble of hydroclimatic records in Monsoon Asia.Quaternary Science Reviews,223.
MLA	Schneider L.,et al."The impact of proxy selection strategies on a millennium-long ensemble of hydroclimatic records in Monsoon Asia".Quaternary Science Reviews 223(2019).