NSSC OpenIR  > 空间科学部
Variations of global gravity waves derived from 14 years of SABER temperature observations
Liu, Xiao; Yue, Jia; Xu, Jiyao; Garcia, Rolando R.; Russell, James M., III; Mlynczak, Martin; Wu, Dong L.; Nakamura, Takuji; 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.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
2017
Volume122Issue:12Pages:6231-6249
ISSN2169-897X
Language英语
AbstractThe 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.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/6136
Collection空间科学部
Corresponding AuthorLiu, 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.
Recommended Citation
GB/T 7714
Liu, Xiao,Yue, Jia,Xu, Jiyao,et al. Variations of global gravity waves derived from 14 years of SABER temperature observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(12):6231-6249.
APA Liu, Xiao.,Yue, Jia.,Xu, Jiyao.,Garcia, Rolando R..,Russell, James M., III.,...&Liu, X .(2017).Variations of global gravity waves derived from 14 years of SABER temperature observations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(12),6231-6249.
MLA Liu, Xiao,et al."Variations of global gravity waves derived from 14 years of SABER temperature observations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.12(2017):6231-6249.
Files in This Item:
File Name/Size DocType Version Access License
2017jgrd53889.pdf(4300KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Xiao]'s Articles
[Yue, Jia]'s Articles
[Xu, Jiyao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Xiao]'s Articles
[Yue, Jia]'s Articles
[Xu, Jiyao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Xiao]'s Articles
[Yue, Jia]'s Articles
[Xu, Jiyao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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