气候变化领域集成服务门户(CCPortal): Added value of very high resolution climate simulations over South Korea using WRF modeling system

CCPortal

DOI	10.1007/s00382-019-04992-x
	Added value of very high resolution climate simulations over South Korea using WRF modeling system
	Qiu L.; Im E.-S.; Hur J.; Shim K.-M.
发表日期	2020
ISSN	0930-7575
起始页码	173
结束页码	189
卷号	54 期号:2020-01-02
英文摘要	This study investigates the added value of very high resolution in long-term climate simulations over South Korea using the Weather Research and Forecasting (WRF) model. A one-way double-nested modeling system consisting of a mother domain (20-km resolution) and nested domain (5-km resolution) is customized for simulating the distinct climatological patterns in Korea, where the region-specific climate is largely influenced by the area’s complex geographical features. The ERA-Interim reanalysis data are used for the initial and boundary conditions, and the simulation spans the period from December 1, 1985 to December 31, 2005 (20-year analysis period with 1-month spin-up). Simulations from both the mother and the nested domain show reasonable performance in capturing the general characteristics of summer temperature and precipitation in terms of temporally and spatially averaged quantities. However, the added value from the nested domain with its higher resolution is apparently found in the reproduction of the intensity and frequency of extreme events and in the physical realism related to the partitioning of convective and large-scale precipitation. The nested domain not only better resolves the sharp gradients of temperature variation over short distances but also substantially reduces the systematic cold bias seen in temperature extremes produced by the mother domain. Furthermore, the nested domain is better able to simulate the upper tail of precipitation distributions and thus of extreme events. The higher resolution also improves the simulation of partitioning between convective and large-scale precipitation, leading to a plausible relationship between extreme precipitation and temperature and showing good agreement with in situ observation. Given the different behaviors of convective and large-scale precipitation in response to temperature changes, their realistic partitioning in the model has important potential for enhancing the reliability of precipitation projection under global warming. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Added value; Climate extremes; High resolution; Regional climate simulation
语种	英语
scopus关键词	air temperature; climate modeling; climatology; computer simulation; extreme event; global warming; precipitation (climatology); regional climate; temperature anomaly; weather forecasting; South Korea
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/145777
作者单位	Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong; Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Kowloon, Hong Kong; National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, South Korea
推荐引用方式 GB/T 7714	Qiu L.,Im E.-S.,Hur J.,et al. Added value of very high resolution climate simulations over South Korea using WRF modeling system[J],2020,54(2020-01-02).
APA	Qiu L.,Im E.-S.,Hur J.,&Shim K.-M..(2020).Added value of very high resolution climate simulations over South Korea using WRF modeling system.Climate Dynamics,54(2020-01-02).
MLA	Qiu L.,et al."Added value of very high resolution climate simulations over South Korea using WRF modeling system".Climate Dynamics 54.2020-01-02(2020).