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DOI	10.1088/1748-9326/ab88fa
	Influence of model resolution on bomb cyclones revealed by HighResMIP-PRIMAVERA simulations
	Jiaxiang G.; Shoshiro M.; Roberts M.J.; Haarsma R.; Putrasahan D.; Roberts C.D.; Scoccimarro E.; Terray L.; Vanniere B.; Vidale P.L.
发表日期	2020
ISSN	17489318
卷号	15 期号:8
英文摘要	Bomb cyclones are explosively intensifying extratropical cyclones that can cause severe damage to life and property. However, the poor ability of coarse-resolution climate models to simulate bomb cyclones, including underestimation of the frequency of bomb cyclones, remains a problem. In this study, the dependence of bomb cyclone characteristics on horizontal resolution from 135 to 18 km is investigated by analyzing the outputs of HighResMIP historical simulations of atmospheric general circulation models and four reanalysis datasets. Robust resolution dependence of bomb cyclone characteristics is identified for both the models and the reanalyses. Finer horizontal resolution significantly increases the frequency of bomb cyclones and reduces their average horizontal size. A regression analysis indicates that bomb cyclone frequency is roughly doubled from 140 km to 25 km resolution. The overall increase in bomb cyclone number is associated with a large increase in small bomb cyclones and a moderate decrease in large ones. Bomb cyclones in higher-resolution models are also accompanied by a higher maximum wind speed and more extreme wind events, which is probably related to the increased pressure gradients due to the smaller size of the bomb cyclones. These results imply that high-resolution models should be used for evaluating the impacts of bomb cyclones. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	cyclone size; explosive cyclones; high-resolution AGCMs; maximum wind speed; multi-model analysis
语种	英语
scopus关键词	Bombs (ordnance); Climate models; Regression analysis; Wind; Atmospheric general circulation models; Cyclone frequency; Extratropical cyclones; High-resolution models; Higher resolution; Historical simulation; Horizontal resolution; Maximum wind speed; Storms; climate modeling; model; simulation; tropical cyclone
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153905
作者单位	Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan; Department of Earth and Planetary Science, Faculty of Science, Hokkaido University, Sapporo, Japan; Met Office Hadley Centre, Exeter, EX1 3PB, United Kingdom; Koninklijk Nederlands Meteorologisch Instituut (KNMI), De Bilt, Netherlands; Max Planck Gesellschaft zur Foerderung der Wissenschaften E.V. (MPI-M), Hamburg, Germany; European Centre for Medium-Range Weather Forecasts (ECMWF), Reading, United Kingdom; Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC), Bologna, Italy; CECI, Université de Toulouse, CERFACS/CNRS, Toulouse, France; National Centre for Atmospheric Science (NCAS), University of Reading, Reading, United Kingdom
推荐引用方式 GB/T 7714	Jiaxiang G.,Shoshiro M.,Roberts M.J.,et al. Influence of model resolution on bomb cyclones revealed by HighResMIP-PRIMAVERA simulations[J],2020,15(8).
APA	Jiaxiang G..,Shoshiro M..,Roberts M.J..,Haarsma R..,Putrasahan D..,...&Vidale P.L..(2020).Influence of model resolution on bomb cyclones revealed by HighResMIP-PRIMAVERA simulations.Environmental Research Letters,15(8).
MLA	Jiaxiang G.,et al."Influence of model resolution on bomb cyclones revealed by HighResMIP-PRIMAVERA simulations".Environmental Research Letters 15.8(2020).