Doppler Ducting Measurements of Short-Period Gravity Waves and Mesospheric Bores in OH and O₂ Airglow Emissions

Authors

Deepak B. Simkhada, Utah State University
Michael J. Taylor, Utah State University
Steven J. Franke, University of Illinois at Urbana-Champaign

Document Type

Poster

Publication Date

5-20-2024

Abstract

Airglow imaging measurements using the Utah State University Mesospheric Temperature Mapper (MTM) provide unique datasets for investigating horizontal characteristics and the occurrence of small-scale gravity waves. Here we investigate short-period ducted gravity wave and bore-like wave events observed simultaneously in OH and O₂ emission layers over Maui, Hawaii (20.7 N, 156.3 W), during 2003-2004. The coincident University of Illinois meteor radar provides continuous hourly wind measurements over the altitude range of 80-100 km to investigate the intrinsic properties of the wave events and to assess their ducting characteristics, as well as compare with theoretical predictions. Here we present one example of a ducted short-period gravity wave event and one example of a bore event. A simple analytical method based on the observation parameters was used to estimate the ducting characteristics of the waves. The ducting was likely associated with maxima and minima of the background wind, due in part to tides, as measured in the direction of wave propagation.

Comments

Publication date does not represent date presented.

Recommended Citation

Simkhada, Deepak B.; Taylor, Michael J.; and Franke, Steven J., "Doppler Ducting Measurements of Short-Period Gravity Waves and Mesospheric Bores in OH and O₂ Airglow Emissions" (2024). All Physics Faculty Publications. Paper 2199.
https://digitalcommons.usu.edu/physics_facpub/2199