气候变化领域集成服务门户(CCPortal): Near-surface mean and gust wind speeds in ERA5 across Sweden: towards an improved gust parametrization

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DOI	10.1007/s00382-020-05302-6
	Near-surface mean and gust wind speeds in ERA5 across Sweden: towards an improved gust parametrization
	Minola L.; Zhang F.; Azorin-Molina C.; Pirooz A.A.S.; Flay R.G.J.; Hersbach H.; Chen D.
发表日期	2020
ISSN	0930-7575
起始页码	887
结束页码	907
卷号	55
英文摘要	The ERA5 reanalysis product has been compared with hourly near-surface wind speed and gust observations across Sweden for 2013–2017. ERA5 shows closer agreement than the previous ERA-Interim reanalysis with regard to both mean wind speed and gust measurements, although significant discrepancies are still found for inland and mountainous regions. Therefore, attempts have been made to improve formulations of the gust parametrization used in ERA5 by adding an elevation-dependency and by adjusting the convective gust contribution. Major improvements, especially over mountain regions, are achieved when the elevation differences among the stations are considered. Closer agreement between the observed and parametrized gusts is reached when the convective gust contribution is also tuned. The newly designed gust parametrization was also tested for Norway, which is characterized by more complex topography. Wind gusts from the selected Norwegian stations are more realistically simulated when both the elevation-dependency and the tuned convective contribution are implemented, although the parametrized gusts are still negatively biased. Such biases are not explained by the different in gust duration in recorded wind gusts between Sweden and Norway. © 2020, The Author(s).
英文关键词	ERA5; Parametrization; Wind gusts; Wind speed
语种	英语
scopus关键词	climate modeling; complex terrain; elevation; gust; mountain region; parameterization; wind velocity; Norway; Sweden
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/145388
作者单位	Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; Department of Meteorology and Center for Advanced Data Assimilation and Predictability Techniques, Penn State University, University Park, PA, United States; Department of Mechanical Engineering, University of Auckland, Auckland, New Zealand; Centro de Investigaciones sobre Desertificación, Consejo Superior de Investigaciones Cientificas (CIDE-CSIC), Moncada, Valencia, Spain; European Centre for Medium-Range Forecasts (ECMWF), Reading, United Kingdom
推荐引用方式 GB/T 7714	Minola L.,Zhang F.,Azorin-Molina C.,et al. Near-surface mean and gust wind speeds in ERA5 across Sweden: towards an improved gust parametrization[J],2020,55.
APA	Minola L..,Zhang F..,Azorin-Molina C..,Pirooz A.A.S..,Flay R.G.J..,...&Chen D..(2020).Near-surface mean and gust wind speeds in ERA5 across Sweden: towards an improved gust parametrization.Climate Dynamics,55.
MLA	Minola L.,et al."Near-surface mean and gust wind speeds in ERA5 across Sweden: towards an improved gust parametrization".Climate Dynamics 55(2020).