气候变化领域集成服务门户(CCPortal): Lagrangian study of the final warming in the southern stratosphere during 2002: Part II. 3D structure

CCPortal

DOI	10.1007/s00382-019-04833-x
	Lagrangian study of the final warming in the southern stratosphere during 2002: Part II. 3D structure
	Curbelo J.; Mechoso C.R.; Mancho A.M.; Wiggins S.
发表日期	2019
ISSN	0930-7575
起始页码	1277
结束页码	1286
卷号	53 期号:2020-03-04
英文摘要	This two-part paper aims to provide a Lagrangian perspective of the final southern warming in spring of 2002, during which the stratospheric polar vortex (SPV) experienced a unique splitting. We approach the subject from a dynamical systems viewpoint and search for Lagrangian coherent structures using a Lagrangian descriptor that is applied to reanalysis data. Part I presents our methodology and focuses by means of a kinematic model, on the understanding of fundamental processes for filamentation and ultimately for vortex splitting on an isentropic surface in the middle stratosphere. The present Part II discusses the three dimensional evolution of the flow during the selected event. For this, we apply the definition of vortex boundary developed in Part I for guidance in the selection of trajectories to illuminate the evolving flow structures, and invoke a criterion that allows to justify why at an isentropic level a pinched vortex will split in later times. Lagrangian structures identified include surfaces that are several kilometers deep, and which a particle trajectory analysis confirms as barriers to the flow. The role of Lagrangian structures in determining the fate of particles during the SPV splitting is discussed. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Filamentation; Lagrangian transport structures; Links between troposphere and stratosphere; Normally hyperbolic invariant manifold (NHIM); Stratospheric warming; Vortex split
语种	英语
scopus关键词	atmospheric dynamics; flow structure; Lagrangian analysis; stratosphere; three-dimensional flow; three-dimensional modeling; troposphere; vortex flow; warming; Swinepox virus (STRAIN KASZA)
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146100
作者单位	Departamento de Matemáticas, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, 28049, Spain; Instituto de Ciencias Matemáticas, CSIC-UAM-UC3M-UCM, C/ Nicolás Cabrera 15, Campus de Cantoblanco UAM, Madrid, 28049, Spain; Department of Atmospheric and Oceanic Sciences, University of California Los Angeles, Los Angeles, CA, United States; School of Mathematics, University of Bristol, Bristol, BS8 1TW, United Kingdom
推荐引用方式 GB/T 7714	Curbelo J.,Mechoso C.R.,Mancho A.M.,et al. Lagrangian study of the final warming in the southern stratosphere during 2002: Part II. 3D structure[J],2019,53(2020-03-04).
APA	Curbelo J.,Mechoso C.R.,Mancho A.M.,&Wiggins S..(2019).Lagrangian study of the final warming in the southern stratosphere during 2002: Part II. 3D structure.Climate Dynamics,53(2020-03-04).
MLA	Curbelo J.,et al."Lagrangian study of the final warming in the southern stratosphere during 2002: Part II. 3D structure".Climate Dynamics 53.2020-03-04(2019).