气候变化领域集成服务门户(CCPortal): The Tidal Response in the Mesosphere/Lower Thermosphere to the Madden-Julian Oscillation Observed by SABER

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DOI	10.1029/2020GL089172
	The Tidal Response in the Mesosphere/Lower Thermosphere to the Madden-Julian Oscillation Observed by SABER
	Kumari K.; Oberheide J.; Lu X.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	A statistical study of 18 years of diurnal temperature tides observed by the SABER instrument on board the TIMED satellite reveals a substantial response of the tides in the upper atmosphere (>60 km) to the Madden-Julian Oscillation (MJO) in the tropical troposphere. Nonmigrating tidal amplitudes are modulated at the intraseasonal MJO periods up to ~25% relative to the seasonal mean, twice as much as for the migrating tides (~10%). We fully characterize the tidal response for active MJO days as a function of season and MJO location as prescribed by the MJO index. The MJO modulation of the tides was predicted by models but could not be unequivocally observed before. Our results further point to an important role of background winds that partly cause a different response for equatorial and nonequatorial tidal modes in different seasons, which has implications for the MJO imprint on the ionospheric dynamo region. ©2020. The Authors.
英文关键词	Ionosphere; Tides; Background winds; Diurnal temperatures; Ionospheric dynamo; Madden-Julian oscillation; Mesosphere/lower thermospheres; Statistical study; Timed satellite; Tropical troposphere; Climatology; ionosphere; Madden-Julian oscillation; mesosphere; satellite altimetry; thermosphere; tidal current; tropical region; troposphere; upper atmosphere
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/169891
作者单位	Department of Physics and Astronomy, Clemson University, Clemson, SC, United States
推荐引用方式 GB/T 7714	Kumari K.,Oberheide J.,Lu X.. The Tidal Response in the Mesosphere/Lower Thermosphere to the Madden-Julian Oscillation Observed by SABER[J],2020,47(16).
APA	Kumari K.,Oberheide J.,&Lu X..(2020).The Tidal Response in the Mesosphere/Lower Thermosphere to the Madden-Julian Oscillation Observed by SABER.Geophysical Research Letters,47(16).
MLA	Kumari K.,et al."The Tidal Response in the Mesosphere/Lower Thermosphere to the Madden-Julian Oscillation Observed by SABER".Geophysical Research Letters 47.16(2020).