Short-Period Mesospheric Gravity Waves and Diurnal Tidal Interactions at a Critical Layer

Authors

Mitsumu K. Ejiri, Utah State University
Michael J. Taylor, Utah State UniversityFollow
Steven J. Franke, University of Illinois at Urbana-Champaign

Document Type

Poster

Journal/Book Title/Conference

2007 Joint Assembly

Location

Acapulco, Mexico

Publication Date

5-2007

Abstract

The US Maui-MALT program is designed to investigate the properties and dynamics of the low-latitude mesosphere and lower thermosphere region (MLT) in exceptional detail. On June 29, 2003, the University of Illinois Meteor Wind Radar (MWR) at Kihei, Maui (20.8N, 156.4W) observed a diurnal tidal wave with an amplitude twice as large as normal at mesospheric height (80-100 km) for 7 hours (14:00-21:00 UT). At the same time, the Utah State University Mesospheric Temperature Mapper (MTM) measured OH and O₂ band emission intensities and temperatures at nearby Haleakala Crater, Maui (20.8 N, 156.2W). The MTM observed a short-period gravity wave (GW) event propagating through this region for most of the night from 600 to 1500 UT. The GWs disappeared from the O₂ band data (peak altitude: ~94 km) and the OH band data (~87 km) around 14:00 UT and 14:30 UT, respectively.

Recommended Citation

Ejiri, Mitsumu K.; Taylor, Michael J.; and Franke, Steven J., "Short-Period Mesospheric Gravity Waves and Diurnal Tidal Interactions at a Critical Layer" (2007). All Physics Faculty Publications. Paper 2136.
https://digitalcommons.usu.edu/physics_facpub/2136