Evaluating model outputs using integrated global speleothem records of climate change since the last glacial

doi:10.5194/cp-15-1557-2019

	Evaluating model outputs using integrated global speleothem records of climate change since the last glacial
	Comas-Bru, Laia 49,50; Harrison, Sandy P.49; Werner, Martin 51; Rehfeld, Kira 52; Scroxton, Nick 53; Veiga-Pires, Cristina 54; Ahmad, Syed Masood 55; Brahim, Yassine Ait 56; Mozhdehi, Sahar Amirnezhad 50; Arienzo, Monica 57
刊名	CLIMATE OF THE PAST
	2019-08-09
卷号	15 期号:4 页码:1557-1579
ISSN号	1814-9324
DOI	10.5194/cp-15-1557-2019
通讯作者	Comas-Bru, Laia(l.comasbru@reading.ac.uk)
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 delta O-18 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 delta O-18 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.
资助项目	European Geosciences Union[W2017/413] ; Irish Centre for Research in Applied Geosciences (iCRAG) ; European Association of Geochemistry (Early Career Ambassadors program 2017) ; Quaternary Research Association UK ; Navarino Environmental Observatory, Stockholm University ; University College Dublin, Savillex (UK)[SF1428] ; Ibn Zohr University, Morocco ; University of Reading ; European Research Council[694481] ; Natural Environment Research Council (JPI-Belmont project PAleao-Constraints on Monsoon Evolution and Dynamics (PACMEDY)) ; Geological Survey Ireland[2017-SC-056] ; Royal Irish Academy ; Portuguese Science Foundation[UID/MAR/00350/2013] ; Deutsche Forschungsgemeinschaft[RE3994/2-1] ; Past Global Changes (PAGES) programme
WOS关键词	STABLE-ISOTOPE VARIATIONS ; GROWTH FREQUENCY VARIATIONS ; GENERAL-CIRCULATION MODEL ; DELTA-O-18 WATER ISOTOPE ; HIGH-RESOLUTION ; OXYGEN-ISOTOPE ; ASIAN MONSOON ; ATMOSPHERIC CIRCULATION ; NORTH-ATLANTIC ; PMIP4 CONTRIBUTION
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000480317900001
资助机构	European Geosciences Union ; Irish Centre for Research in Applied Geosciences (iCRAG) ; European Association of Geochemistry (Early Career Ambassadors program 2017) ; Quaternary Research Association UK ; Navarino Environmental Observatory, Stockholm University ; University College Dublin, Savillex (UK) ; Ibn Zohr University, Morocco ; University of Reading ; European Research Council ; Natural Environment Research Council (JPI-Belmont project PAleao-Constraints on Monsoon Evolution and Dynamics (PACMEDY)) ; Geological Survey Ireland ; Royal Irish Academy ; Portuguese Science Foundation ; Deutsche Forschungsgemeinschaft ; Past Global Changes (PAGES) programme
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13564]
专题	地球环境研究所_现代环境研究室
通讯作者	Comas-Bru, Laia
作者单位	1.Univ New South Wales, Sch Biol Earth & Environm Sci, Kensington, NSW 2052, Australia 2.Arizona State Univ, Inst Human Origins, POB 874101, Tempe, AZ 85287 USA 3.Ruhr Univ Bochum, Inst Geol Mineral & Geophys, Sediment & Isotope Geol, Univ Str 150,IA E5-179, D-44801 Bochum, Germany 4.Geol Survey Israel, 32 Yeshayahu Leibowitz, IL-9371234 Jerusalem, Israel 5.Hebrew Univ Jerusalem, Inst Earth Sci, Edmond J Safra Campus, IL-91904 Jerusalem, Israel 6.Chulalongkorn Univ, Fac Sci, Dept Geol, MESA Res Unit, 254 Phayathai Rd, Bangkok 10330, Thailand 7.Dept Biol Geol & Environm Sci, Via Zamboni 67, I-40126 Bologna, Italy 8.Johannes Gutenberg Univ Mainz, Inst Geosci, Johann Joachim Becher Weg 21, D-55128 Mainz, Germany 9.Hungarian Acad Sci, Res Ctr Astron & Earth Sci, Inst Geol & Geochem Res, Budaorsi Ut 45, H-1112 Budapest, Hungary 10.Univ Melbourne, Sch Geog, Melbourne, Vic 3010, Australia
推荐引用方式 GB/T 7714	Comas-Bru, Laia,Harrison, Sandy P.,Werner, Martin,et al. Evaluating model outputs using integrated global speleothem records of climate change since the last glacial[J]. CLIMATE OF THE PAST,2019,15(4):1557-1579.
APA	Comas-Bru, Laia.,Harrison, Sandy P..,Werner, Martin.,Rehfeld, Kira.,Scroxton, Nick.,...&Zhang, Haiwei.(2019).Evaluating model outputs using integrated global speleothem records of climate change since the last glacial.CLIMATE OF THE PAST,15(4),1557-1579.
MLA	Comas-Bru, Laia,et al."Evaluating model outputs using integrated global speleothem records of climate change since the last glacial".CLIMATE OF THE PAST 15.4(2019):1557-1579.