气候变化领域集成服务门户(CCPortal): A comparative study of mesoscale flow-field modelling in an Eastern Alpine region using WRF and GRAMM-SCI

CCPortal

DOI	10.1016/j.atmosres.2020.105288
	A comparative study of mesoscale flow-field modelling in an Eastern Alpine region using WRF and GRAMM-SCI
	Oettl D.; Veratti G.
发表日期	2021
ISSN	0169-8095
卷号	249
英文摘要	Recently, the mesoscale model GRAMM-SCI has been further developed to make use of the freely available global ERA5 reanalysis dataset issued by the ECMWF. In this study, first results are discussed for the federal state of Styria, which is situated in the eastern Alps of Austria. Additional simulations were made with the mesoscale model WRF, which serve as a benchmark in this work. The model runs covered one week in summer and another one in winter dominated by fair weather conditions. These were characterized by the development of complex mountain wind systems in the Alps, which play an important role for the dispersion of pollutants. Regarding the bias and the root mean square error both models perform very well in comparison with existing studies for Alpine areas and are able to capture the main features of observed surface flows such as valley-wind systems or katabatic flows at slopes. In addition, observed calm wind conditions at many stations during the winter period were reproduced by the models. However, the correct simulation of wind directions in these conditions was found to be extremely challenging. Existing model quality criteria for wind direction seem to be too strict for low-wind-speed conditions. Therefore, based on theoretical and empirical considerations, a new model evaluation benchmark for wind direction is proposed, which takes into account the random nature of horizontally meandering flows in stagnant weather situations. © 2020 Elsevier B.V.
英文关键词	Alpine meteorology; Flow-field modelling; GRAMM-SCI; Mountain-valley winds; Quality criteria for wind direction; WRF
语种	英语
scopus关键词	Wind; Comparative studies; Low wind speed condition; Meso-scale modeling; Model evaluation; Model qualities; Root mean square errors; Wind conditions; Wind directions; Mean square error; atmospheric modeling; boundary layer; comparative study; mesoscale meteorology; mountain environment; valley; weather forecasting; wind direction; wind field; Alpine County; California; United States
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141665
作者单位	Air Quality Control, Government of Styria, Landhausgasse 7, Graz, 8010, Austria; Dipartimento di Ingegneria “Enzo Ferrari”, Università degli Studi di Modena e Reggio Emilia, Italy
推荐引用方式 GB/T 7714	Oettl D.,Veratti G.. A comparative study of mesoscale flow-field modelling in an Eastern Alpine region using WRF and GRAMM-SCI[J],2021,249.
APA	Oettl D.,&Veratti G..(2021).A comparative study of mesoscale flow-field modelling in an Eastern Alpine region using WRF and GRAMM-SCI.Atmospheric Research,249.
MLA	Oettl D.,et al."A comparative study of mesoscale flow-field modelling in an Eastern Alpine region using WRF and GRAMM-SCI".Atmospheric Research 249(2021).