气候变化领域集成服务门户(CCPortal): Assessment of the capability of CMIP6 global climate models to simulate Arctic cyclones

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DOI	10.1016/j.accre.2021.07.007
	Assessment of the capability of CMIP6 global climate models to simulate Arctic cyclones
	Song J.-N.; Fu G.; Xu Y.; Han Z.-Y.; Sun Q.-Z.; Wang H.
发表日期	2021
ISSN	1674-9278
起始页码	660
结束页码	676
卷号	12 期号:5
英文摘要	Arctic cyclones are one of the important synoptic-scale systems that affect weather variability over the Arctic and can cause intense weather phenomena and disasters. Thus, research on the assessment of the climate characteristics, activity laws, and variability trends of Arctic cyclones using climate models has practical significance. On the basis of the fifth-generation European Center for Medium-Range Weather Forecasts reanalysis (ERA5) data, the spatiotemporal variations of Arctic cyclones during 1981–2014 are analyzed by detecting and tracking cyclones using the Lagrangian method. Then, the simulation results of 14 global climate models from the Coupled Model Intercomparison Project Phase 6 (CMIP5) are compared with the results of ERA5. Both the individual models and their ensemble mean can simulate the spatial distribution of the density of cyclone tracks with reasonable capability, the correlation coefficients of track density are approximately 0.6. Furthermore, in boreal winter, the Atlantic zonal negative bias of track density is stronger than that in summer. By contrast, in boreal summer, the negative bias over the Arctic Ocean region is stronger than that in winter. Moreover, the simulations of density -field-related variables (i.e., cyclolysis, cyclogenesis, track, and lowest center pressure densities) of Arctic cyclones are generally better in winter than in summer, and the models can simulate well that the number of external Arctic cyclones entering the Arctic region from the midlatitudes is more than the internal Arctic cyclones generated inside the Arctic region (60°‒90°N). Furthermore, we show that the capability of models to capture Arctic cyclones with a short lifespan (<3 d) is somewhat poor. Except for the simulation of the minimum pressure of Arctic cyclones, the performance of high-resolution models is better than that of low-resolution models. The simulation of Arctic cyclone radius is poor among all of the variables related to Arctic cyclones, and the observed trends of intensities are not well simulated. In general, the simulation of location-field-related variables (i.e., intensity, radius, deepening rate, and center pressure) of Arctic cyclones is better in winter than in summer. © 2021 The Authors
英文关键词	Arctic cyclones; CMIP6; Simulation capability assessment
来源期刊	Advances in Climate Change Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236449
作者单位	Ocean University of China, Qingdao, 266100, China; Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, 100081, China; National Marine Environmental Forecasting Center, Beijing, 100081, China
推荐引用方式 GB/T 7714	Song J.-N.,Fu G.,Xu Y.,et al. Assessment of the capability of CMIP6 global climate models to simulate Arctic cyclones[J],2021,12(5).
APA	Song J.-N.,Fu G.,Xu Y.,Han Z.-Y.,Sun Q.-Z.,&Wang H..(2021).Assessment of the capability of CMIP6 global climate models to simulate Arctic cyclones.Advances in Climate Change Research,12(5).
MLA	Song J.-N.,et al."Assessment of the capability of CMIP6 global climate models to simulate Arctic cyclones".Advances in Climate Change Research 12.5(2021).