globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA025059
Scopus记录号: 2-s2.0-85047509267
论文题名:
Estimation of Mesospheric Densities at Low Latitudes Using the Kunming Meteor Radar Together With SABER Temperatures
作者: Yi W.; Xue X.; Reid I.M.; Younger J.P.; Chen J.; Chen T.; Li N.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:4
起始页码: 3183
结束页码: 3195
语种: 英语
英文关键词: density ; mesosphere ; meteor ; MSIS ; radar ; SABER
英文摘要: Neutral mesospheric densities at a low latitude have been derived during April 2011 to December 2014 using data from the Kunming meteor radar in China (25.6°N, 103.8°E). The daily mean density at 90 km was estimated using the ambipolar diffusion coefficients from the meteor radar and temperatures from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) instrument. The seasonal variations of the meteor radar-derived density are consistent with the density from the Mass Spectrometer and Incoherent Scatter (MSIS) model, show a dominant annual variation, with a maximum during winter, and a minimum during summer. A simple linear model was used to separate the effects of atmospheric density and the meteor velocity on the meteor radar peak detection height. We find that a 1 km/s difference in the vertical meteor velocity yields a change of approximately 0.42 km in peak height. The strong correlation between the meteor radar density and the velocity-corrected peak height indicates that the meteor radar density estimates accurately reflect changes in neutral atmospheric density and that meteor peak detection heights, when adjusted for meteoroid velocity, can serve as a convenient tool for measuring density variations around the mesopause. A comparison of the ambipolar diffusion coefficient and peak height observed simultaneously by two co-located meteor radars indicates that the relative errors of the daily mean ambipolar diffusion coefficient and peak height should be less than 5% and 6%, respectively, and that the absolute error of the peak height is less than 0.2 km. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114153
Appears in Collections:气候减缓与适应

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作者单位: CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei, China; Mengcheng National Geophysical Observatory, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; School of Physical Sciences, University of Adelaide, Adelaide, SA, Australia; Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, China; ATRAD Pty Ltd., Thebarton, SA, Australia; National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao, China; State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Yi W.,Xue X.,Reid I.M.,et al. Estimation of Mesospheric Densities at Low Latitudes Using the Kunming Meteor Radar Together With SABER Temperatures[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(4)
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