气候变化领域集成服务门户(CCPortal): Improving AGCM Hurricane Structure With Two-Way Nesting

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DOI	10.1029/2018MS001359
	Improving AGCM Hurricane Structure With Two-Way Nesting
	Gao K.; Harris L.; Chen J.-H.; Lin S.-J.; Hazelton A.
发表日期	2019
ISSN	19422466
起始页码	278
结束页码	292
卷号	11 期号:1
英文摘要	We demonstrate that two-way nesting significantly improves the structure of simulated hurricane in an atmospheric general circulation model. Two sets of 30-day hindcast experiments are conducted, one with the global-uniform-resolution (approximately 25-km nominal horizontal resolution) and the other with a regionally refined two-way nest (approximately 8 km over the tropical North Atlantic). The increase in the horizontal resolution on the nested grid improves the representation of storm intensity and intensification rate. When normalized by the radius of maximum wind (RMW), composite hurricane structures are generally similar in both simulations and compare well to observations. However, the hurricanes in the globally uniform configuration have much larger RMWs than observed, while those in the two-way-nested configuration have more realistic RMWs. We also find that the representation of the RMW has a critical impact on the simulation of inertial stability and boundary-layer convergence in the inner-core region. The more realistic inner-core size (indicated by RMW) and structure are possible reasons for the improved intensification rates in the two-way-nested configuration. © 2019. The Authors.
语种	英语
scopus关键词	Boundary layers; Hurricanes; Atmospheric general circulation models; Horizontal resolution; Inertial stability; North Atlantic; Storm intensity; Two-way nesting; Uniform configurations; Uniform resolution; Atmospheric structure; atmospheric general circulation model; boundary layer; convergence; hindcasting; hurricane; resolution; simulation; Atlantic Ocean; Atlantic Ocean (North)
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156985
作者单位	The Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States; NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; University Corporation for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Gao K.,Harris L.,Chen J.-H.,et al. Improving AGCM Hurricane Structure With Two-Way Nesting[J],2019,11(1).
APA	Gao K.,Harris L.,Chen J.-H.,Lin S.-J.,&Hazelton A..(2019).Improving AGCM Hurricane Structure With Two-Way Nesting.Journal of Advances in Modeling Earth Systems,11(1).
MLA	Gao K.,et al."Improving AGCM Hurricane Structure With Two-Way Nesting".Journal of Advances in Modeling Earth Systems 11.1(2019).