气候变化领域集成服务门户(CCPortal): Radiosonde Observations of a Wintertime Meridional Convergence of Gravity Waves Around 60°S in the Lower Stratosphere

CCPortal

DOI	10.1029/2020GL089740
	Radiosonde Observations of a Wintertime Meridional Convergence of Gravity Waves Around 60°S in the Lower Stratosphere
	Moffat-Griffin T.; Colwell S.R.; Wright C.J.; Hindley N.P.; Mitchell N.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	Satellite observations show that there is a wintertime hotspot of gravity wave activity, located mainly over the ocean, around 60°S in the stratosphere. However, the sources of the gravity waves making up this hotspot are varied and complex and remain unclear. Here we use radiosonde observations from 11 Antarctic stations and selected small islands close to 60°S to examine the horizontal directional pseudo-momentum flux and energy density distributions of upward propagating gravity waves in the lower stratosphere. This paper shows, for the first time, that short vertical wavelength gravity waves in the lower stratosphere clearly propagate meridionally toward 60°S during the winter months. This result supports previous studies that show that this belt of gravity wave activity over the ocean is contributed to by wave sources outside 60°S. © 2020. The Authors.
英文关键词	Radiosondes; Antarctic stations; Energy density distributions; Lower stratosphere; Momentum flux; Radiosonde observations; Satellite observations; Upward propagating gravity waves; Wave activity; Gravity waves; gravity wave; meridional circulation; momentum; observational method; radiosonde; satellite data; stratosphere; wave propagation; wavelength
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169568
作者单位	Atmosphere, Ice and Climate Team, British Antarctic Survey, Cambridge, United Kingdom; Centre for Space, Atmospheric and Oceanic Science, University of Bath, Bath, United Kingdom
推荐引用方式 GB/T 7714	Moffat-Griffin T.,Colwell S.R.,Wright C.J.,et al. Radiosonde Observations of a Wintertime Meridional Convergence of Gravity Waves Around 60°S in the Lower Stratosphere[J],2020,47(20).
APA	Moffat-Griffin T.,Colwell S.R.,Wright C.J.,Hindley N.P.,&Mitchell N.J..(2020).Radiosonde Observations of a Wintertime Meridional Convergence of Gravity Waves Around 60°S in the Lower Stratosphere.Geophysical Research Letters,47(20).
MLA	Moffat-Griffin T.,et al."Radiosonde Observations of a Wintertime Meridional Convergence of Gravity Waves Around 60°S in the Lower Stratosphere".Geophysical Research Letters 47.20(2020).