中国科学院国家空间科学中心机构知识库
Advanced  
NSSC OpenIR  > 空间科学部  > 期刊论文
题名: Variations of global gravity waves derived from 14 years of SABER temperature observations
作者: Liu, Xiao; Yue, Jia; Xu, Jiyao; Garcia, Rolando R.; Russell, James M., III; Mlynczak, Martin; Wu, Dong L.; Nakamura, Takuji
作者部门: 空间科学部
通讯作者: Liu, X (reprint author), Henan Normal Univ, Sch Math & Informat Sci, Henan Engn Lab Big Data Stat Anal & Optimal Contr, Xinxiang, Peoples R China. ; Liu, X (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China.
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN号: 2169-897X
出版日期: 2017
卷号: 122, 期号:12, 页码:6231-6249
收录类别: SCI
项目资助者: National Science Foundation of China [41574143, 41374158, 41331069, 41229001] ; Educational Commission of Henan Province of China [17HASTIT010, 2014GGJS-047] ; Excellent Young Teachers of Henan Normal University [2014YQ0006] ; Specialized Research Fund of the State Key Laboratory of Space Weather ; Open Research Program of the State Key Laboratory of Space Weather
英文摘要: The global gravity wave (GW) potential energy (PE) per unit mass is derived from SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) temperature profiles over the past 14 years (2002-2015). Since the SABER data cover longer than one solar cycle, multivariate linear regression is applied to calculate the trend (means linear trend from 2002 to 2015) of global GW PE and the responses of global GW PE to solar activity, to QBO (quasi-biennial oscillation) and to ENSO (El Nino-Southern Oscillation). We find a significant positive trend of GW PE at around 50 degrees N during July from 2002 to 2015, in agreement with ground-based radar observations at a similar latitude but from 1990 to 2010. Both the monthly and the deseasonalized trends of GW PE are significant near 50 degrees S. Specifically, the deseasonalized trend of GW PE has a positive peak of 12-15% per decade at 40 degrees S-50 degrees S and below 60 km, which suggests that eddy diffusion is increasing in some places. A significant positive trend of GW PE near 50 degrees S could be due to the strengthening of the polar stratospheric jets, as documented from Modern Era Retrospective-analysis for Research and Applications wind data. The response of GW PE to solar activity is negative in the lower and middle latitudes. The response of GW PE to QBO (as indicated by 30 hPa zonal winds over the equator) is negative in the tropical upper stratosphere and extends to higher latitudes at higher altitudes. The response of GW PE to ENSO (as indicated by the Multivariate ENSO Index) is positive in the tropical upper stratosphere. Plain Language Summary Gravity waves (GWs) are disturbances of the atmosphere with horizontal wavelengths of several kilometers to several thousand kilometers. GWs can be generated by many sources, e.g., wind jets, deep convection, and flow over topography. The global GW potential energy (PE) per unit mass is derived from SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) temperature profiles over the past 14 years (2002-2015). We find a significant positive trend of GW PE at around 50 degrees N during July from 2002 to 2015. Both the monthly and the deseasonalized trends in of GW PE are significant near 50 degrees S. Specifically, the deseasonalized trend of GW PE has a positive peak of 12-15% per decade at 40 degrees S-50 degrees S and below 60 km, which suggests that eddy diffusion is increasing in some places. The response of GW PE to solar activity is negative in the lower and middle latitudes. The response of GW PE to QBO (as indicated by 30 hPa zonal winds over the equator) is negative in the tropical upper stratosphere and extends to higher latitudes at higher altitudes. The response of GW PE to ENSO (as indicated by the MEI index) is positive in the tropical upper stratosphere.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6136
Appears in Collections:空间科学部_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
2017jgrd53889.pdf(4300KB)期刊论文作者接受稿限制开放View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Liu, Xiao]'s Articles
[Yue, Jia]'s Articles
[Xu, Jiyao]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Liu, Xiao]‘s Articles
[Yue, Jia]‘s Articles
[Xu, Jiyao]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 2017jgrd53889.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院国家空间科学中心 - Feedback
Powered by CSpace