GSTDTAP  > 气候变化
DOI10.1029/2018JD029172
Latitudinal Double-Peak Structure of Stationary Planetary Wave 1 in the Austral Winter Middle Atmosphere and Its Possible Generation Mechanism
Lu, Xian1; Wu, Haonan1; Oberheide, Jens1; Liu, Han-Li2; McInerney, Joseph M.2
2018-10-27
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:20页码:11551-11568
文章类型Article
语种英语
国家USA
英文摘要

We report a hitherto unknown latitudinal double-peak structure in the amplitude of stationary planetary wave 1 (SPW1) geopotential height in the stratosphere and lower mesosphere during austral winter. The primary peak is located at 60-70 degrees S and 30-40 km, and the secondary peak is at 30-50 degrees S and 40-60 km. According to 36 years (1981-2016) of the Modern-Era Retrospective analysis for Research and Applications, version 2, reanalysis data, the double-peak structure occurs with frequencies of similar to 61%, 97%, 53%, and 25% in May, June, July and August, respectively, while it rarely exists in other seasons. Significant downward Eliassen-Palm fluxes suggestive of downward-propagating waves are often found above the secondary peak, and phase progressions show opposite directions on its two sides. From the free-running Whole Atmosphere Community Climate Model and linear mechanistic model simulations, the secondary peak is likely generated by the interference of primary upward-and secondary downward-propagating SPW1 excited in situ by gravity wave forcing in the upper mesosphere. The strengths of the primary and secondary waves need to be comparable to form an effective interference pattern, which may explain the missing double-peak feature in boreal winter as the primary waves are too dominant. Summer-to-winter interhemispheric wave coupling is identified in the austral midwinter and appears to originate from the secondary SPW1 generated in the summer hemisphere. Since the double-peak structure of SPW1 is sensitive to the mean wind, wave-mean flow, and wave-wave interactions, this study provides a reference for general circulation and mechanistic models to simulate the middle atmosphere wave dynamics in austral winter.


Plain Language Summary The winter-hemisphere stationary planetary waves are the most dominant perturbations in the lower and middle atmosphere of the Earth. They make significant contribution to the dynamics, chemistry, transport, and transition of the stratosphere and lower mesosphere. It is therefore important to understand their characteristics, forming mechanisms, and impacts. In this paper, we newly identify an intriguing latitudinal double-peak feature of stationary planetary waves in austral winter months. Its statistical significance has been proved by using long-term satellite observations and reanalysis data. The underlying mechanisms suggested by modeling work not only rely on the structure of the polar vortex but also involve the secondary planetary wave generation and wave-wave interactions. This work uses a combination of satellite measurements, reanalysis product, whole atmosphere model, and mechanistic model, which provides a powerful tool to digest the important atmospheric phenomenon.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000452000300017
WOS关键词STRATOSPHERE ; MESOSPHERE ; MODEL ; PROPAGATION ; EVOLUTION ; CYCLE ; MERRA
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/32328
专题气候变化
作者单位1.Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA;
2.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA
推荐引用方式
GB/T 7714
Lu, Xian,Wu, Haonan,Oberheide, Jens,et al. Latitudinal Double-Peak Structure of Stationary Planetary Wave 1 in the Austral Winter Middle Atmosphere and Its Possible Generation Mechanism[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(20):11551-11568.
APA Lu, Xian,Wu, Haonan,Oberheide, Jens,Liu, Han-Li,&McInerney, Joseph M..(2018).Latitudinal Double-Peak Structure of Stationary Planetary Wave 1 in the Austral Winter Middle Atmosphere and Its Possible Generation Mechanism.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(20),11551-11568.
MLA Lu, Xian,et al."Latitudinal Double-Peak Structure of Stationary Planetary Wave 1 in the Austral Winter Middle Atmosphere and Its Possible Generation Mechanism".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.20(2018):11551-11568.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Lu, Xian]的文章
[Wu, Haonan]的文章
[Oberheide, Jens]的文章
百度学术
百度学术中相似的文章
[Lu, Xian]的文章
[Wu, Haonan]的文章
[Oberheide, Jens]的文章
必应学术
必应学术中相似的文章
[Lu, Xian]的文章
[Wu, Haonan]的文章
[Oberheide, Jens]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。