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Observations Of The Breakdown Of Mountain Waves Over The Andes Lidar Observatory At Cerro Pachon On 8/9 July 2012, James Hecht, Dave Fritts, L. Wang, L. J. Gelinas, R. J. Rudy, Richard L. Walterscheid, Michael J. Taylor, Pierre-Dominique Pautet, Steven Smith, S. J. Franke
Observations Of The Breakdown Of Mountain Waves Over The Andes Lidar Observatory At Cerro Pachon On 8/9 July 2012, James Hecht, Dave Fritts, L. Wang, L. J. Gelinas, R. J. Rudy, Richard L. Walterscheid, Michael J. Taylor, Pierre-Dominique Pautet, Steven Smith, S. J. Franke
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Although mountain waves (MWs) are thought to be a ubiquitous feature of the wintertime southern Andes stratosphere, it was not known whether these waves propagated up to the mesopause region until Smith et al. (2009) confirmed their presence via airglow observations. The new Andes Lidar Observatory at Cerro Pachon in Chile provided the opportunity for a further study of these waves. Since MWs have near-zero phase speed, and zero wind lines often occur in the winter upper mesosphere (80 to 100 km altitude) region due to the reversal of the zonal mean and tidal wind, MW breakdown may routinely occur …
Coordinated Investigation Of Midlatitude Upper Mesospheric Temperature Inversion Layers And The Associated Gravity Wave Forcing By Na Lidar And Advanced Mesospheric Temperature Mapper In Logan, Utah, Tao Yuan, Pierre-Dominique Pautet, Y. Zhao, Xuguang Cai, Michael J. Taylor, Neal R. Criddle
Coordinated Investigation Of Midlatitude Upper Mesospheric Temperature Inversion Layers And The Associated Gravity Wave Forcing By Na Lidar And Advanced Mesospheric Temperature Mapper In Logan, Utah, Tao Yuan, Pierre-Dominique Pautet, Y. Zhao, Xuguang Cai, Michael J. Taylor, Neal R. Criddle
All Physics Faculty Publications
Mesospheric inversion layers (MIL) are well studied in the literature but their relationship to the dynamic feature associated with the breaking of atmospheric waves in the mesosphere/lower thermosphere (MLT) region are not well understood. Two strong MIL events (ΔT ~30 K) were observed above 90 km during a 6 day full diurnal cycle Na lidar campaign conducted from 6 August to 13 August Logan, Utah (42°N, 112°W). Colocated Advanced Mesospheric Temperature Mapper observations provided key information on concurrent gravity wave (GW) events and their characteristics during the nighttime observations. The study found both MILs were well correlated with the development …