Second order potential vorticity and its potential applications

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	Second order potential vorticity and its potential applications
其他题名	Second order potential vorticity and its potential applications
	Gao ShouTing 1; Xu PengCheng2 ; Li Na 1; Zhou YuShu 1
	2014-01-01
发表期刊	SCIENCE CHINA-EARTH SCIENCES
ISSN	1674-7313
卷号	57 期号:10 页码:2428-2434
摘要	A new invariant, the second order potential voracity (SPV), is derived in this paper. SPY is the dot product of vorticity and the potential voracity (PV) gradient, and is proven conservative for a compressible, adiabatic and frictionless atmosphere. Research shows that the new invariant may be used to indicate the evolution of PV, because SPV includes all the information that determines PV evolution: the wind field, and the PV gradient. Furthermore, SPV is capable of diagnosing heavy precipitation because of the strong signals it presents in areas of heavy rainfall. SPY also shows great potential as a comprehensive conserved quantity for indicating the dynamical tropopause and baroclinic instability.
其他摘要	A new invariant, the second order potential vorticity (SPV), is derived in this paper. SPV is the dot product of vorticity and the potential vorticity (PV) gradient, and is proven conservative for a compressible, adiabatic and frictionless atmosphere. Research shows that the new invariant may be used to indicate the evolution of PV, because SPV includes all the information that determines PV evolution: the wind field, and the PV gradient. Furthermore, SPV is capable of diagnosing heavy precipitation because of the strong signals it presents in areas of heavy rainfall. SPV also shows great potential as a comprehensive conserved quantity for indicating the dynamical tropopause and baroclinic instability.
关键词	TROPICAL CYCLONE PART I CYCLOGENESIS STRATOSPHERE DIAGNOSTICS TROPOSPHERE TROPOPAUSE ANOMALIES potential vorticity second order potential vorticity PV evolution PV gradient heavy rainfall
收录类别	CSCD
语种	英语
资助项目	[Key Research Program of the Chinese Academy of Sciences] ; [National Natural Science Foundation of China]
CSCD记录号	CSCD:5267876
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/52909
专题	应用数学研究所
作者单位	1.中国科学院 2.中国科学院数学与系统科学研究院 3.中国科学院大学
推荐引用方式 GB/T 7714	Gao ShouTing,Xu PengCheng,Li Na,et al. Second order potential vorticity and its potential applications[J]. SCIENCE CHINA-EARTH SCIENCES,2014,57(10):2428-2434.
APA	Gao ShouTing,Xu PengCheng,Li Na,&Zhou YuShu.(2014).Second order potential vorticity and its potential applications.SCIENCE CHINA-EARTH SCIENCES,57(10),2428-2434.
MLA	Gao ShouTing,et al."Second order potential vorticity and its potential applications".SCIENCE CHINA-EARTH SCIENCES 57.10(2014):2428-2434.