DOI: 10.1002/grl.50897
论文题名: Decrease in sodium density observed during auroral particle precipitation over Tromsø, Norway
作者: Tsuda T.T. ; Nozawa S. ; Kawahara T.D. ; Kawabata T. ; Saito N. ; Wada S. ; Ogawa Y. ; Oyama S. ; Hall C.M. ; Tsutsumi M. ; Ejiri M.K. ; Suzuki S. ; Takahashi T. ; Nakamura T.
刊名: Geophysical Research Letters
ISSN: 0094-8610
EISSN: 1944-8341
出版年: 2013
卷: 40, 期: 17 起始页码: 4486
结束页码: 4490
语种: 英语
英文关键词: aurora
; EISCAT
; lidar
; mesosphere/D-region
; polar region
; sodium layer
Scopus关键词: aurora
; EISCAT
; mesosphere/D-region
; Polar Regions
; Sodium layer
; Electric fields
; Optical radar
; Precipitation (chemical)
; aurora
; electric field
; electron density
; lidar
; polar region
; sodium
; Norway
; Troms
英文摘要: Using a simultaneous and common-volume observation by a European incoherent scatter (EISCAT) VHF radar and a sodium lidar at Tromsø, Norway (69.6°N, 19.2°E), we have determined, for the first time, the effect of pure particle precipitation, excluding that of the electric field, on sodium density variations. Our observation on 24-25 January 2012 showed that sodium atom density decreased when there was no ion temperature enhancement (indicating a weak electric field) and the electron density increased (indicating strong particle precipitation). From the results, we have concluded that auroral particle precipitation induced sodium atom density decrease in this event. Furthermore, a discussion is provided regarding the time response of the decrease in sodium density. Key Points Pure auroral particle precipitation effect induced sodium density decrease Simultaneous and common-volume observation by EISCAT radar and sodium lidar Time response of the sodium density decrease by the particle precipitation ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883513027&doi=10.1002%2fgrl.50897&partnerID=40&md5=730ed3297cfd9c6143123f8692444801
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5874
Appears in Collections: 气候减缓与适应
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作者单位: National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan
Recommended Citation:
Tsuda T.T.,Nozawa S.,Kawahara T.D.,et al. Decrease in sodium density observed during auroral particle precipitation over Tromsø, Norway[J]. Geophysical Research Letters,2013-01-01,40(17).