气候变化领域集成服务门户(CCPortal): Simulating precipitation and temperature in the Lake Champlain basin using a regional climate model: limitations and uncertainties

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DOI	10.1007/s00382-019-04987-8
	Simulating precipitation and temperature in the Lake Champlain basin using a regional climate model: limitations and uncertainties
	Huang H.; Winter J.M.; Osterberg E.C.; Hanrahan J.; Bruyère C.L.; Clemins P.; Beckage B.
发表日期	2020
ISSN	0930-7575
起始页码	69
结束页码	84
卷号	54 期号:2020-01-02
英文摘要	The Lake Champlain Basin has socioeconomic and ecological significance for the Northeastern United States and Quebec, Canada. Temperatures and extreme precipitation events have been increasing across this region over the past three decades. Accurate, high-resolution climate simulations are critical to assessing potential climate change risk in the Lake Champlain Basin. We evaluate the performance of a regional climate model, the Weather Research and Forecasting (WRF) model, to downscale ERA-Interim reanalysis data to 4 km for the Lake Champlain Basin. Specifically, we compare an ensemble of five WRF experiments with different physics configurations using a one-way, triple-nested domain (36, 12, and 4 km) over three 5-year periods (1980–1984, 1995–1999, and 2010–2014) to Daymet, a gridded observational dataset. We find that WRF simulations of the Lake Champlain Basin generally reproduce the observed temperature and precipitation seasonal cycles, but have cold and wet biases. The simulation of mean temperature by WRF is most sensitive to the choice of radiation scheme, while the simulation of mean precipitation is most sensitive to the choice of radiation, cumulus, and microphysics scheme. We find that turning the cumulus scheme on improves the simulation of the precipitation seasonal cycle at a 4 km resolution, but also substantially enhances the wet bias. Using a coarser resolution (36 km) produces smaller regionally averaged precipitation biases, but not improved correlations between simulated and observed monthly precipitation. Both spatial resolution and turning the cumulus scheme off have minor effects on simulated temperature. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Extreme events; Lake Champlain Basin; Model evaluation; Physics parameterization; Regional climate modeling; WRF
语种	英语
scopus关键词	air temperature; climate change; climate modeling; downscaling; extreme event; parameterization; precipitation assessment; regional climate; weather forecasting; Lake Champlain Basin
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145776
作者单位	Department of Earth Sciences, Dartmouth College, Hanover, NH, United States; Department of Geography, Dartmouth College, Hanover, NH, United States; Department of Atmospheric Sciences, Northern Vermont University–Lyndon, Lyndonville, VT, United States; National Center for Atmospheric Research, Boulder, CO, United States; Environmental Sciences and Management, North-West University, Potchefstroom, South Africa; Department of Plant Biology, University of Vermont, Burlington, VT, United States; Department of Computer Science, University of Vermont, Burlington, VT, United States
推荐引用方式 GB/T 7714	Huang H.,Winter J.M.,Osterberg E.C.,et al. Simulating precipitation and temperature in the Lake Champlain basin using a regional climate model: limitations and uncertainties[J],2020,54(2020-01-02).
APA	Huang H..,Winter J.M..,Osterberg E.C..,Hanrahan J..,Bruyère C.L..,...&Beckage B..(2020).Simulating precipitation and temperature in the Lake Champlain basin using a regional climate model: limitations and uncertainties.Climate Dynamics,54(2020-01-02).
MLA	Huang H.,et al."Simulating precipitation and temperature in the Lake Champlain basin using a regional climate model: limitations and uncertainties".Climate Dynamics 54.2020-01-02(2020).