气候变化领域集成服务门户(CCPortal): Technical Note: Improved sampling of behavioral subsurface flow model parameters using active subspaces

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DOI	10.5194/hess-24-4567-2020
	Technical Note: Improved sampling of behavioral subsurface flow model parameters using active subspaces
	Erdal D.; Cirpka O.A.
发表日期	2020
ISSN	1027-5606
起始页码	4567
结束页码	4574
卷号	24 期号:9
英文摘要	In global sensitivity analysis and ensemble-based model calibration, it is essential to create a large enough sample of model simulations with different parameters that all yield plausible model results. This can be difficult if a priori plausible parameter combinations frequently yield non-behavioral model results. In a previous study span classCombining double low linecit idCombining double low linexref we developed and tested a parameter-sampling scheme based on active-subspace decomposition. While in principle this scheme worked well, it still implied testing a substantial fraction of parameter combinations that ultimately had to be discarded because of implausible model results. This technical note presents an improved sampling scheme and illustrates its simplicity and efficiency by a small test case. The new sampling scheme can be tuned to either outperform the original implementation by improving the sampling efficiency while maintaining the accuracy of the result or by improving the accuracy of the result while maintaining the sampling efficiency. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	Sensitivity analysis; Well testing; Behavioral model; Global sensitivity analysis; Model calibration; Model simulation; Parameter combination; Sampling efficiency; Sampling schemes; Subspace decomposition; Efficiency; accuracy assessment; flow modeling; parameter estimation; sampling; sensitivity analysis; simulation; subsurface flow
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/159303
作者单位	Erdal, D., Center for Applied Geoscience, University of Tübingen, Hölderlinstr. 12, Tübingen, 72074, Germany, Now At: Tyréns Ab, Lilla Badhusgatan 2, Gothenburg, 41121, Sweden; Cirpka, O.A., Center for Applied Geoscience, University of Tübingen, Hölderlinstr. 12, Tübingen, 72074, Germany
推荐引用方式 GB/T 7714	Erdal D.,Cirpka O.A.. Technical Note: Improved sampling of behavioral subsurface flow model parameters using active subspaces[J],2020,24(9).
APA	Erdal D.,&Cirpka O.A..(2020).Technical Note: Improved sampling of behavioral subsurface flow model parameters using active subspaces.Hydrology and Earth System Sciences,24(9).
MLA	Erdal D.,et al."Technical Note: Improved sampling of behavioral subsurface flow model parameters using active subspaces".Hydrology and Earth System Sciences 24.9(2020).