DOI: 10.1002/2015GL066411
论文题名: A sporadic sodium layer event detected with five-directional lidar and simultaneous wind, electron density, and electric field observation at Tromsø, Norway
作者: Tsuda T.T. ; Nozawa S. ; Kawahara T.D. ; Kawabata T. ; Saito N. ; Wada S. ; Hall C.M. ; Tsutsumi M. ; Ogawa Y. ; Oyama S. ; Takahashi T. ; Ejiri M.K. ; Nishiyama T. ; Nakamura T. ; Brekke A.
刊名: Geophysical Research Letters
ISSN: 0094-8476
EISSN: 1944-8207
出版年: 2015
卷: 42, 期: 21 起始页码: 9190
结束页码: 9196
语种: 英语
英文关键词: EISCAT
; lidar
; lower thermosphere
; mesosphere
; polar region
; sodium layer
Scopus关键词: Atoms
; Electric fields
; Ionosphere
; Radar
; Sodium
; EISCAT
; Lower thermosphere
; mesosphere
; Polar Regions
; Sodium layer
; Optical radar
; detection method
; electric field
; electron density
; lidar
; mesosphere
; observational method
; polar region
; radar
; sodium
; thermosphere
; wind velocity
; Norway
; Troms
; Tromso
英文摘要: A sporadic sodium layer (SSL) was detected with five-directional lidar observation on 15 December 2012 at Tromsø, Norway. We have derived the horizontal velocity of the SSL front from the SSL onset times at the five positions and compared it with the background wind velocity from the collocated meteor radar and European Incoherent Scatter (EISCAT) radar. As a result, both velocities were fairly consistent. The increase rate in the height-integrated sodium density around the SSL onset was 3-6 ×1010 m-2 s-1, which was comparable to relatively large cases in the previous studies. However, the EISCAT-observed electric field was too small to induce such a rapid sodium atom production. In addition, the amounts of the sodium atom increases at the five positions were mostly same. Thus, there were no clear signatures for the sodium atom production. These results strongly indicate that the observed SSL was just advected by the background wind. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954508207&doi=10.1002%2f2015GL066411&partnerID=40&md5=57f3e8d686712085dcbb87588ee50f6d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8092
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Communication Engineering and Informatics, University of Electro-Communications, Chofu, Japan
Recommended Citation:
Tsuda T.T.,Nozawa S.,Kawahara T.D.,et al. A sporadic sodium layer event detected with five-directional lidar and simultaneous wind, electron density, and electric field observation at Tromsø, Norway[J]. Geophysical Research Letters,2015-01-01,42(21).