气候变化领域集成服务门户(CCPortal): Evaluating model outputs using integrated global speleothem records of climate change since the last glacial

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DOI	10.5194/cp-15-1557-2019
	Evaluating model outputs using integrated global speleothem records of climate change since the last glacial
	Comas-Bru L.; Harrison S.P.; Werner M.; Rehfeld K.; Scroxton N.; Veiga-Pires C.; Ahmad S.M.; Brahim Y.A.; Mozhdehi S.A.; Arienzo M.; Atsawawaranunt K.; Baker A.; Braun K.; Breitenbach S.; Burstyn Y.; Chawchai S.; Columbu A.; Deininger M.; Demény A.; Dixon B.; Hatvani I.G.; Hu J.; Kaushal N.; Kern Z.; Labuhn I.; Lachniet M.S.; Lechleitner F.A.; Lorrey A.; Markowska M.; Nehme C.; Novello V.F.; Oster J.; Pérez-Mejías C.; Pickering R.; Sekhon N.; Wang X.; Warken S.; Atkinson T.; Ayalon A.; Baldini J.; Bar-Matthews M.; Bernal J.P.; Boch R.; Borsato A.; Boyd M.; Brierley C.; Cai Y.; Carolin S.; Cheng H.; Constantin S.; Couchoud I.; Cruz F.; Denniston R.; Dragusin V.; Duan W.; Ersek V.; Finné M.; Fleitmann D.; Fohlmeister J.; Frappier A.; Genty D.; Holzkämper S.; Hopley P.; Johnston V.; Kathayat G.; Keenan-Jones D.; Koltai G.; Li T.-Y.; Lone M.A.; Luetscher M.; Mattey D.; Moreno A.; Moseley G.; Psomiadis D.; Ruan J.; Scholz D.; Sha L.; Smith A.C.; Strikis N.; Treble P.; Ünal-Imer E.; Vaks A.; Vansteenberge S.; Voarintsoa N.R.G.; Wong C.; Wortham B.; Wurtzel J.; Zhang H.; SISAL working group members
发表日期	2019
ISSN	18149324
起始页码	1557
结束页码	1579
卷号	15 期号:4
英文摘要	Although quantitative isotope data from speleothems has been used to evaluate isotope-enabled model simulations, currently no consensus exists regarding the most appropriate methodology through which to achieve this. A number of modelling groups will be running isotope-enabled palaeoclimate simulations in the framework of the Coupled Model Intercomparison Project Phase 6, so it is timely to evaluate different approaches to using the speleothem data for data-model comparisons. Here, we illustrate this using 456 globally distributed speleothem d18O records from an updated version of the Speleothem Isotopes Synthesis and Analysis (SISAL) database and palaeoclimate simulations generated using the ECHAM5-wiso isotope-enabled atmospheric circulation model. We show that the SISAL records reproduce the first-order spatial patterns of isotopic variability in the modern day, strongly supporting the application of this dataset for evaluating model-derived isotope variability into the past. However, the discontinuous nature of many speleothem records complicates the process of procuring large numbers of records if data-model comparisons are made using the traditional approach of comparing anomalies between a control period and a given palaeoclimate experiment. To circumvent this issue, we illustrate techniques through which the absolute isotope values during any time period could be used for model evaluation. Specifically, we show that speleothem isotope records allow an assessment of a model's ability to simulate spatial isotopic trends. Our analyses provide a protocol for using speleothem isotope data for model evaluation, including screening the observations to take into account the impact of speleothem mineralogy on d18O values, the optimum period for the modern observational baseline and the selection of an appropriate time window for creating means of the isotope data for palaeo-time-slices. © 2019 Author(s).
语种	英语
scopus关键词	atmospheric circulation; climate change; climate modeling; CMIP; Last Glacial; paleoclimate; speleothem
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146872
作者单位	School of Archaeology, Geography & Environmental Sciences, Reading University, Whiteknights, Reading, RG6 6AH, United Kingdom; UCD School of Earth Sciences, University College Dublin, Belfield, Dublin 4, Ireland; Division Climate Science – Paleoclimate Dynamics, Climate Science division, Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bussestr. 24, Bremerhaven, 27570, Germany; Institute of Environmental Physics, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 229, Heidelberg, 69120, Germany; Department of Geosciences, University of Massachusetts Amherst, 611 North Pleasant Street, Amherst, MA 01003-9297, United States; Universidade do Algarve, Marine and Environmental Research Centre – CIMA, Campus de Gambelas, Faro, 8005-139, Portugal; Department of Geography, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, 110025, India; Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, Shaanxi, China; School of Earth Sciences, University Coll...
推荐引用方式 GB/T 7714	Comas-Bru L.,Harrison S.P.,Werner M.,et al. Evaluating model outputs using integrated global speleothem records of climate change since the last glacial[J],2019,15(4).
APA	Comas-Bru L..,Harrison S.P..,Werner M..,Rehfeld K..,Scroxton N..,...&SISAL working group members.(2019).Evaluating model outputs using integrated global speleothem records of climate change since the last glacial.Climate of the Past,15(4).
MLA	Comas-Bru L.,et al."Evaluating model outputs using integrated global speleothem records of climate change since the last glacial".Climate of the Past 15.4(2019).