Gravity wave activity in the troposphere and lower stratosphere: An observational study of seasonal and interannual variations

	Gravity wave activity in the troposphere and lower stratosphere: An observational study of seasonal and interannual variations
	Wu, Yongfu; Yuan, Wei; Xu, Jiyao
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2013-10-16
卷号	118 期号:19 页码:11352-11359
关键词	gravity waves saturation models dynamical and convective instabilities
ISSN号	2169-8996
通讯作者	北京8701信箱
中文摘要	An 11 year (1998-2008) temperature and wind data set obtained over Annette Island (55.03°N, 131.57°W) is used to examine gravity wave activity and their seasonal and interannual variations in gravity wave activity. Vertical wave number spectra of normalized temperature and wind fluctuations are calculated and are compared with the predictions of gravity wave saturation models. Results indicate that there are serious discrepancies between our measurements and earlier observational results at present stage of study of vertical wave number spectra. The correlation coefficients between tropospheric and stratospheric temperature spectral parameters are very small, suggesting that the result is in agreement with previous studies. Time series of total wave energy reveal clear seasonal and interannual variations. Maximum wave energy amplitudes occur near winter of each year in the troposphere and near summer of each year in the stratosphere. Specifically, the maximum wave energy amplitudes in the troposphere show a close correspondence with the maximum occurrence rate of dynamical instability. In addition, the maximum wave energy amplitudes in the stratosphere also show a close correspondence with the maximum occurrence rate of convective instability.
学科主题	空间物理
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1517]
专题	国家空间科学中心_空间科学部
作者单位	Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yongfu,Yuan, Wei,Xu, Jiyao. Gravity wave activity in the troposphere and lower stratosphere: An observational study of seasonal and interannual variations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2013,118(19):11352-11359.
APA	Wu, Yongfu,Yuan, Wei,&Xu, Jiyao.(2013).Gravity wave activity in the troposphere and lower stratosphere: An observational study of seasonal and interannual variations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,118(19),11352-11359.
MLA	Wu, Yongfu,et al."Gravity wave activity in the troposphere and lower stratosphere: An observational study of seasonal and interannual variations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 118.19(2013):11352-11359.