气候变化领域集成服务门户(CCPortal): Coordinated Observations of 8- and 6-hr Tides in the Mesosphere and Lower Thermosphere by Three Meteor Radars Near 60°S Latitude

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DOI	10.1029/2019GL086629
	Coordinated Observations of 8- and 6-hr Tides in the Mesosphere and Lower Thermosphere by Three Meteor Radars Near 60°S Latitude
	Liu G.; Janches D.; Lieberman R.S.; Moffat-Griffin T.; Fritts D.C.; Mitchell N.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Atmospheric 8- and 6-hr tides are observed for the first time in the zonal and meridional winds at ~82–97 km altitudes simultaneously at Tierra del Fuego (TDF; 53.7°S, 67.7°W), King Edward Point (KEP; 54.3°S, 36.5°W), and Rothera (ROT; 67.5°S, 68.0°W) at Southern Hemisphere (SH) middle-to-high latitudes during long time spans, allowing to reveal climatology and migrating nature. The monthly averaged amplitudes vary between ~1 and 8 m/s for the 8-hr tides while the amplitudes of 6-hr tides are smaller ~0.5–4 m/s. Both tides exhibit an annual pattern having the amplitude maxima during SH winter and minima in SH summer. The tidal phases are smaller (earlier) in the zonal wind than in the meridional wind by about 90°. The phase differences observed between TDF and KEP, which are located at similar latitudes but different longitudes suggest the propagation of migrating tides. The study finds that 8- and 6-hr tides are correlated. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Ionosphere; Atmospheric tide; Coordinated observations; High Latitudes; Meridional winds; Mesosphere and lower thermosphere; Phase difference; Southern Hemisphere; Wave interactions; Tides; climatology; Doppler radar; latitude; mesosphere; Southern Hemisphere; thermosphere; tide; zonal wind; Antarctica; King Edward Point; South Georgia; Tierra del Fuego
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/170890
作者单位	Space Sciences Laboratory, University of California, Berkeley, Berkeley, CA, United States; CUA/NASA GSFC, Greenbelt, MD, United States; Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD, United States; British Antarctic Survey, Cambridge, United Kingdom; GATS Inc., Boulder, CO, United States; Centre for Space, Atmospheric and Oceanic Science, University of Bath, Bath, United Kingdom
推荐引用方式 GB/T 7714	Liu G.,Janches D.,Lieberman R.S.,et al. Coordinated Observations of 8- and 6-hr Tides in the Mesosphere and Lower Thermosphere by Three Meteor Radars Near 60°S Latitude[J],2020,47(1).
APA	Liu G.,Janches D.,Lieberman R.S.,Moffat-Griffin T.,Fritts D.C.,&Mitchell N.J..(2020).Coordinated Observations of 8- and 6-hr Tides in the Mesosphere and Lower Thermosphere by Three Meteor Radars Near 60°S Latitude.Geophysical Research Letters,47(1).
MLA	Liu G.,et al."Coordinated Observations of 8- and 6-hr Tides in the Mesosphere and Lower Thermosphere by Three Meteor Radars Near 60°S Latitude".Geophysical Research Letters 47.1(2020).