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https://hdl.handle.net/2440/53283
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Type: | Journal article |
Title: | A case study of the mesospheric 6.5-day wave observed by radar systems |
Author: | Jiang, G. Xu, J. Xiong, J. Ma, R. Ning, B. Murayama, Y. Thorsen, D. Gurubaran, S. Vincent, R. Reid, I. Franke, S. |
Citation: | Journal of Geophysical Research, 2008; 113(16):16111-1-16111-12 |
Publisher: | Amer Geophysical Union |
Issue Date: | 2008 |
ISSN: | 0148-0227 2169-8996 |
Statement of Responsibility: | G. Jiang, Jiyao Xu, J. Xiong, R. Ma, B. Ning, Y. Murayama, D. Thorsen, S. Gurubaran, R. A. Vincent, I. Reid, S. J. Franke |
Abstract: | In this paper, analysis of wind data detected by six ground-based radar systems located in equatorial and midlatitude belts shows that a strong mesospheric 6.5-day wave event occurred during April–May 2003. We compared the global distribution of the observed 6.5-day wave event with the theoretical wave structure (Rossby normal mode (s, n) = (1, −2)). Additionally, we investigated several important wave characteristics to understand the mesospheric 6.5-day wave event, i.e., wave period, vertical structure, relationship with background wind, propagating direction, and the zonal wave number. Our results are summarized into three points: (1) the latitudinal structure of the mesospheric 6.5-day wave during April–May 2003 is basically in agreement with the theoretical Rossby mode (s, n) = (1, −2), although the wave amplitude of zonal wind peaked at the subequatorial latitude of Northern Hemisphere but not at the theoretical place, equatorial region; (2) the main wave periods and the altitude distribution of large amplitude of this wave event varied with latitude; (3) the downward propagating wave phases indicated that this wave event originated in the lower atmosphere and propagated upward to the upper region. |
Keywords: | 6.5-day wave normal mode mesosphere lower thermosphere |
DOI: | 10.1029/2008JD009907 |
Published version: | http://dx.doi.org/10.1029/2008jd009907 |
Appears in Collections: | Aurora harvest 5 Physics publications |
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