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题名: Simultaneous lidar observation of peculiar sporadic K and Na layers at Sao Jose dos Campos (23.1 degrees S, 45.9 degrees W), Brazil
作者: Jiao, Jing; Yang, Guotao; Cheng, Xuewu; Liu, Zhengkuan; Wang, Jihong; Yan, Zhenzhong; Wang, Chi; Batista, Paulo; Pimenta, Alexandre; Andrioli, Vania; Denardini, C. M.
作者部门: 空间科学部
通讯作者: Jiao, Jing ; Yang, Guotao ; Cheng, Xuewu ; Liu, Zhengkuan ; Wang, Jihong ; Yan, Zhenzhong ; Wang, Chi ; Batista, Paulo ; Pimenta, Alexandre ; Andrioli, Vania ; Denardini, C. M.
关键词: Low-latitude lidar ; Sodium layer ; Potassium layer ; Es ; Tide
刊名: ADVANCES IN SPACE RESEARCH
ISSN号: 0273-1177
出版日期: 2018
卷号: 61, 期号:7, 页码:1942-1951
收录类别: SCI
项目资助者: Natural Science Foundation of China [41474130, 41264006, 41604130] ; NSSC research fund for key development directions ; Specialized Research Fund for State Key Laboratories of China ; China-Brazil Joint Laboratory for Space Weather, CAS
英文摘要: We present the first simultaneous observation of mesopause sodium (Na) and potassium (K) layer by a lidar which has Na and K channel simultaneously at the South Hemisphere site, Sao Jose dos Campos (23.1 degrees S, 45.9 degrees W). Measurements reported here were conducted on two nights with 3.5 and 8 h of observations in November 2016. On 20 November 2016, sporadic layers in both Na and K layer occurred above 100 km, and the higher layers corresponded well with sporadic E (Es) layer. And the density of Na at 100-105 km is higher than that at main layer around 90 km, but K density around 100 km is at least 3 times smaller compared with the K density around 90 km for the similar period. On 21 November 2016, both sporadic layers occurred in main layer height with obvious descending variations with time, which seems like tidal induced. Notably, the peak K/Na ratio slowly increased with time. And Na layer and K layer showed different processes along with time with K density reaching its maximum 1 h later than that of Na. Correlations of Na/K density, Es, and winds were also discussed. (C) 2017 COSPAR. Published by Elsevier Ltd. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6234
Appears in Collections:空间科学部_期刊论文

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