Atmospheric gravity waves identified by ground-based observations of the intensity and rotational temperature of OH airglow |
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| Authors: | Hidehiko Suzuki Kazuo Shiokawa Masaki Tsutsumi Takuji Nakamura Makoto Taguchi |
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| Institution: | aDepartment of Polar Science, The Graduate University for Advanced Studies, Tokyo 173-8515, Japan;bSolar-Terrestrial Environmental Laboratory, Nagoya University, Toyokawa 442-8507, Japan;cNational Institute of Polar Research, Tokyo 173-8515, Japan;dResearch Institute for Sustainable Humanosphere, Kyoto University, Kyoto 611-0011, Japan |
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| Abstract: | Spectroscopic observations of OH airglow undertaken on May 2, 2006 at Uji, Japan reveal variations in intensity and rotational temperature related to the passage of an atmospheric gravity wave. The variations exhibit a period of approximately 1 h and magnitudes of 2–6% in intensity and 0.5–2% in rotational temperature. The vertical wavelength and intrinsic frequency of the atmospheric gravity wave were determined from the horizontal wavelength derived by an OH airglow imager, the background horizontal wind velocity obtained by the middle and upper atmosphere (MU) radar, and the dispersion relationship. The observed variations are consistent with the values calculated using the model of Liu, A.Z., Swenson, G.R. 2003. A modeling study of O2 and OH airglow perturbations induced by atmospheric gravity waves. J. Geophys. Res. 108 (No. D4), 4151. doi:10.1029/2002JD002474]. |
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| Keywords: | OH Airglow Atmospheric gravity wave Rotational temperature Mesopause |
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