气候变化领域集成服务门户(CCPortal): Assessment of MPAS variable resolution simulations in the grey-zone of convection against WRF model results and observations: An MPAS feasibility study of three extreme weather events in Europe

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DOI	10.1007/s00382-018-4562-z
	Assessment of MPAS variable resolution simulations in the grey-zone of convection against WRF model results and observations: An MPAS feasibility study of three extreme weather events in Europe
	Kramer M.; Heinzeller D.; Hartmann H.; van den Berg W.; Steeneveld G.-J.
发表日期	2020
ISSN	0930-7575
起始页码	253
结束页码	276
卷号	55
英文摘要	Regional weather forecasting models like the Weather Research and Forecasting (WRF) model allow for nested domains to save computational effort and provide detailed results for mesoscale weather phenomena. The sudden resolution change by nesting may cause artefacts in the model results. On the contrary, the novel global Model for Prediction Across Scales (MPAS) runs on Voronoi meshes that allow for smooth resolution transition towards the desired high resolution in the region of interest. This minimises the resolution-related artefacts, while still saving computational effort. We evaluate the MPAS model over Europe focussing on three mesoscale weather events: a synoptic gale over the North Sea, a föhn effect in Switzerland, and a case of organised convection with hail over the Netherlands. We use four different MPAS meshes (60 km global refined to-3 km (60– 3 km), analogous 30–3 km, 15–3 km, global 3 km) and compare their results to routine observations and a WRF setup with a single domain of 3 km grid spacing. We also discuss the computational requirements for the different MPAS meshes and the operational WRF setup. In general, the MPAS 3 km and WRF model results correspond to the observations. However, a global model at 3 km resolution as a replacement for WRF is not feasible for operational use. More importantly, all variable-resolution meshes employed in this study show comparable skills in short-term forecasting within the high-resolution area at considerably lower computational costs. © 2018, The Author(s).
英文关键词	Convection-permitting forecast; Föhn; Grey-zone; Hail; MPAS; Numerical weather prediction; Voronoi grid; WRF
语种	英语
scopus关键词	atmospheric convection; climate modeling; climate prediction; ensemble forecasting; image resolution; numerical model; regional climate; weather forecasting; Atlantic Ocean; North Sea; Switzerland
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/145414
作者单位	Wageningen University, Meteorology and Air Quality Section, PO box 47, Wageningen, 6700AA, Netherlands; Meteogroup, Research Department, Agro Business 99-101, Wageningen, 6708 PV, Netherlands; Institute of Meteorology and Climate Research, Karlsruhe Institude of Technology, Kreuzeckbahnstr, 19, Garmisch-Partenkirchen, 82467, Germany; Institute of Geography, Augsburg University, Alter Postweg 118, Augsburg, 86159, Germany
推荐引用方式 GB/T 7714	Kramer M.,Heinzeller D.,Hartmann H.,et al. Assessment of MPAS variable resolution simulations in the grey-zone of convection against WRF model results and observations: An MPAS feasibility study of three extreme weather events in Europe[J],2020,55.
APA	Kramer M.,Heinzeller D.,Hartmann H.,van den Berg W.,&Steeneveld G.-J..(2020).Assessment of MPAS variable resolution simulations in the grey-zone of convection against WRF model results and observations: An MPAS feasibility study of three extreme weather events in Europe.Climate Dynamics,55.
MLA	Kramer M.,et al."Assessment of MPAS variable resolution simulations in the grey-zone of convection against WRF model results and observations: An MPAS feasibility study of three extreme weather events in Europe".Climate Dynamics 55(2020).