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DOI10.5194/hess-23-1741-2019
Technical note: Changes in cross- and auto-dependence structures in climate projections of daily precipitation and their sensitivity to outliers
Hnilica, Jan1,2; Hanel, Martin2; Pus, Vladimir2
发表日期2019
ISSN1027-5606
EISSN1607-7938
卷号23期号:3页码:1741-1749
英文摘要

Simulations of regional or global climate models are often used for climate change impact assessment. To eliminate systematic errors, which are inherent to all climate model simulations, a number of post-processing (statistical downscaling) methods have been proposed recently. In addition to basic statistical properties of simulated variables, some of these methods also consider a dependence structure between or within variables. In the present paper we assess the changes in cross-and auto-correlation structures of daily precipitation in six regional climate model simulations. In addition the effect of outliers is explored making a distinction between ordinary outliers (i.e. values exceptionally small or large) and dependence outliers (values deviating from dependence structures). It is demonstrated that correlation estimates can be strongly influenced by a few outliers even in large datasets. In turn, any statistical downscaling method relying on sample correlation can therefore provide misleading results. An exploratory procedure is proposed to detect the dependence outliers in multivariate data and to quantify their impact on correlation structures.


WOS研究方向Geology ; Water Resources
来源期刊HYDROLOGY AND EARTH SYSTEM SCIENCES
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/95177
作者单位1.Czech Acad Sci, Inst Hydrodynam, Patankou 5, Prague 16612 6, Czech Republic;
2.Czech Univ Life Sci Prague, Fac Environm Sci, Kamycka 129, Prague 16521 6, Suchdol, Czech Republic
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GB/T 7714
Hnilica, Jan,Hanel, Martin,Pus, Vladimir. Technical note: Changes in cross- and auto-dependence structures in climate projections of daily precipitation and their sensitivity to outliers[J],2019,23(3):1741-1749.
APA Hnilica, Jan,Hanel, Martin,&Pus, Vladimir.(2019).Technical note: Changes in cross- and auto-dependence structures in climate projections of daily precipitation and their sensitivity to outliers.HYDROLOGY AND EARTH SYSTEM SCIENCES,23(3),1741-1749.
MLA Hnilica, Jan,et al."Technical note: Changes in cross- and auto-dependence structures in climate projections of daily precipitation and their sensitivity to outliers".HYDROLOGY AND EARTH SYSTEM SCIENCES 23.3(2019):1741-1749.
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