气候变化领域集成服务门户(CCPortal): A spectral approach to estimating the timescale-dependent uncertainty of paleoclimate records

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DOI	10.5194/cp-17-825-2021
	A spectral approach to estimating the timescale-dependent uncertainty of paleoclimate records - Part 2: Application and interpretation
	Dolman A.M.; Kunz T.; Groeneveld J.; Laepple T.
发表日期	2021
ISSN	1814-9324
起始页码	743
结束页码	756
卷号	17 期号:2
英文摘要	Proxy climate records are an invaluable source of information about the earth's climate prior to the instrumental record. The temporal and spatial coverage of records continues to increase; however, these records of past climate are associated with significant uncertainties due to non-climate processes that influence the recorded and measured proxy values. Generally, these uncertainties are timescale dependent and correlated in time. Accounting for structure in the errors is essential for providing realistic error estimates for smoothed or stacked records, detecting anomalies, and identifying trends, but this structure is seldom accounted for. In the first of these companion articles, we outlined a theoretical framework for handling proxy uncertainties by deriving the power spectrum of proxy error components from which it is possible to obtain timescale-dependent error estimates. Here in Part 2, we demonstrate the practical application of this theoretical framework usingthe example of marine sediment cores. We consider how to obtain estimates for the required parameters and give examples of the application of this approach for typical marine sediment proxy records.Our new approach of estimating and providing timescale-dependent proxy errors overcomes the limitations of simplistic single-value error estimates. We aim to provide the conceptual basis for a more quantitative use of paleo-records for applications such as model-data comparison, regional and global synthesis of past climate states, and data assimilation. © 2021 Author(s).
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/183584
作者单位	Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Research Unit Potsdam, Telegrafenberg A45, Potsdam, 14473, Germany; Institute of Geology, Hamburg University, Hamburg, 20146, Germany; Department of Geosciences, University of Bremen, Bremen, 28359, Germany; MARUM - Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, Bremen, 28334, Germany
推荐引用方式 GB/T 7714	Dolman A.M.,Kunz T.,Groeneveld J.,et al. A spectral approach to estimating the timescale-dependent uncertainty of paleoclimate records - Part 2: Application and interpretation[J],2021,17(2).
APA	Dolman A.M.,Kunz T.,Groeneveld J.,&Laepple T..(2021).A spectral approach to estimating the timescale-dependent uncertainty of paleoclimate records - Part 2: Application and interpretation.Climate of the Past,17(2).
MLA	Dolman A.M.,et al."A spectral approach to estimating the timescale-dependent uncertainty of paleoclimate records - Part 2: Application and interpretation".Climate of the Past 17.2(2021).