干旱区生态环境知识资源中心(Arid): Evaluating NA-CORDEX historical performance and future change of western US precipitation patterns and modes of variability

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DOI	10.1002/joc.7083
	Evaluating NA-CORDEX historical performance and future change of western US precipitation patterns and modes of variability
	Meyer, Jonathan David Douglas; Wang, S. -Y. Simon; Gillies, Robert R.; Yoon, Jin-Ho
通讯作者	Meyer, JDD (corresponding author), Utah Climate Ctr, Logan, UT USA.
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN	0899-8418
EISSN	1097-0088
出版年	2021
卷号	41 期号:9 页码:4509-4532
英文摘要	The western U.S. precipitation climatology, simulated by the NA-CORDEX regional climate model ensembles, with spatial resolutions of 0.44 degrees (14 model members) and 0.22 degrees (15 model members), is examined to evaluate the capability of these ensembles to reproduce (1) the annual and semi-annual precipitation cycle of several hydrologically-important western U.S. regions and (2) localized seasonality in the amount and timing of precipitation. Similar to previous organized downscaling projects, NA-CORDEX ensembles continue to over-simulate wintertime precipitation over mountainous regions. However, both NA-CORDEX ensembles showed improvements to the Desert Southwest's summertime precipitation associated with the North American Monsoon. Furthermore, the predominant dry bias found throughout the 0.44 degrees ensemble was improved in many of the higher resolution 0.22 degrees ensemble members; associated with enhanced mesoscale processes and improved thermodynamics driving the model's convective parameterizations. When compared against observation-based gridded precipitation, the ability to capture the annual and semi-annual modes of variability was starkly improved in the higher resolution 0.22 degrees ensemble. The higher resolution members reproduced more consistent spatial patterns of variance featuring lower errors in magnitude-especially with respect to the winter-summer and spring-fall seasonality. A great deal of spread in model performance was found for the semi-annual cycles, although the higher-resolution ensemble exhibited better clustering of performance metrics. Ultimately, NA-CORDEX model performance is still tied to the fidelity of the large-scale parent model although we found performance is also closely related to which regional climate model was used while the future trend was more related to the parent GCM. Additionally, the value-added via finer domain grid spacing is clear. Lastly, future projections of precipitation patterns were analysed to examine trends in the seasonality of precipitation intensity and modes of variability.
英文关键词	future climate projections hydroclimate NA‐ CORDEX regional climate model seasonal variability western U S precipitation
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	SCI-E
WOS记录号	WOS:000646328000001
WOS关键词	REGIONAL CLIMATE MODEL ; NORTH-AMERICAN MONSOON ; UNITED-STATES ; PART I ; CMIP5 ; SIMULATIONS ; EXTREMES ; ERA
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350575
作者单位	[Meyer, Jonathan David Douglas; Wang, S. -Y. Simon; Gillies, Robert R.] Utah Climate Ctr, Logan, UT USA; [Wang, S. -Y. Simon; Gillies, Robert R.] Utah State Univ, Plants Soils & Climate Dept, Logan, UT 84322 USA; [Yoon, Jin-Ho] Gwangju Inst Sci & Technol, Sch Earth Sci & Environm Engn, 123Cheomdan Gwagi Ro, Gwangju 61005, South Korea
推荐引用方式 GB/T 7714	Meyer, Jonathan David Douglas,Wang, S. -Y. Simon,Gillies, Robert R.,et al. Evaluating NA-CORDEX historical performance and future change of western US precipitation patterns and modes of variability[J],2021,41(9):4509-4532.
APA	Meyer, Jonathan David Douglas,Wang, S. -Y. Simon,Gillies, Robert R.,&Yoon, Jin-Ho.(2021).Evaluating NA-CORDEX historical performance and future change of western US precipitation patterns and modes of variability.INTERNATIONAL JOURNAL OF CLIMATOLOGY,41(9),4509-4532.
MLA	Meyer, Jonathan David Douglas,et al."Evaluating NA-CORDEX historical performance and future change of western US precipitation patterns and modes of variability".INTERNATIONAL JOURNAL OF CLIMATOLOGY 41.9(2021):4509-4532.