气候变化领域集成服务门户(CCPortal): Explicit Prediction of Continental Convection in a Skillful Variable-Resolution Global Model

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DOI	10.1029/2018MS001542
	Explicit Prediction of Continental Convection in a Skillful Variable-Resolution Global Model
	Harris L.M.; Rees S.L.; Morin M.; Zhou L.; Stern W.F.
发表日期	2019
ISSN	19422466
起始页码	1847
结束页码	1869
卷号	11 期号:6
英文摘要	We present a new global-to-regional model, cfvGFS, able to explicitly (without parameterization) represent convection over part of the Earth. This model couples the Geophysical Fluid Dynamics Laboratory Finite-Volume Cubed-Sphere Dynamical Core (FV3) to the Global Forecast System physics and initial conditions, augmented with a six-category microphysics and a modified planetary boundary layer scheme. We examine the characteristics of cfvGFS on a 3-km continental U. S. domain nested within a 13-km global model. The nested cfvGFS still has good hemispheric skill comparable to or better than the operational Global Forecast System, while supercell thunderstorms, squall lines, and derechos are explicitly represented over the refined region. In particular, cfvGFS has excellent representations of fine-scale updraft helicity fields, an important proxy for severe weather forecasting. Precipitation biases are found to be smaller than in uniform-resolution global models and competitive with operational regional models; the 3-km domain also improves upon the global models in 2-m temperature and humidity skill. We discuss further development of cfvGFS and the prospects for a unified global-to-regional prediction system. ©2019. The Authors.
英文关键词	convective-scale modeling; FV3; global modeling; severe convection; variable-resolution models
语种	英语
scopus关键词	Boundary layers; Storms; FV^3; Global modeling; Scale modeling; Severe convections; Variable resolution; Weather forecasting; atmospheric convection; boundary layer; fluid dynamics; forecasting method; humidity; precipitation intensity; prediction; severe weather; thunderstorm
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/156890
作者单位	Geophysical Fluid Dynamics Laboratory, NOAA, Princeton, NJ, United States; University Corporation for Atmospheric Research, Boulder, CO, United States; Atmospheric and Oceanic Sciences Program, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Harris L.M.,Rees S.L.,Morin M.,et al. Explicit Prediction of Continental Convection in a Skillful Variable-Resolution Global Model[J],2019,11(6).
APA	Harris L.M.,Rees S.L.,Morin M.,Zhou L.,&Stern W.F..(2019).Explicit Prediction of Continental Convection in a Skillful Variable-Resolution Global Model.Journal of Advances in Modeling Earth Systems,11(6).
MLA	Harris L.M.,et al."Explicit Prediction of Continental Convection in a Skillful Variable-Resolution Global Model".Journal of Advances in Modeling Earth Systems 11.6(2019).