Case Study of Mesospheric Gravity Wave Momentum Flux and Dynamical Instability Using the Arecibo Dual Beam Incoherent Scatter Radar

dc.contributor.author	Morton, Yu
dc.contributor.author	Zhou, Qihou
dc.date.accessioned	2008-12-15T21:59:56Z
dc.date.available	2008-12-15T21:59:56Z
dc.date.created	2006-05
dc.date.issued	2008-12-15T21:59:56Z
dc.identifier.uri	http://hdl.handle.net/2374.MIA/273
dc.description	We report the first observation of gravity wave momentum flux in the mesosphere using the dual-beam Arecibo incoherent scatter radar (ISR). Quasimonochromatic waves were observed throughout the daytime of July 28, 2001 in the altitude range of 65â 85 km. The largest wave speed was about 100 m/s and the dominant period was about 15 min. Instability, as indicated by the Richardson number, occurred at several altitudes, most dramatically at 77 and 81 kilometers. The zonal momentum flux is found to change sign at altitudes where dynamical instability occurs. No significant gravity waves were observed in the region having an eastward background wind, while they were ubiquitous when the background wind was westward. Citation: Zhou, Q., and Y. T. Morton (2006), A case study of mesospheric gravity wave momentum flux and dynamical instability using the Arecibo dual beam incoherent scatter radar, Geophys. Res. Lett., 33, L10802, doi:10.1029/ 2005GL025608.	en
dc.language.iso	en	en
dc.title	Case Study of Mesospheric Gravity Wave Momentum Flux and Dynamical Instability Using the Arecibo Dual Beam Incoherent Scatter Radar	en
dc.type	Text	en_US
dc.type.genre	Article	en_US

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