Comparison of Large- and Small-Scale Gravity Waves Over Halley, Antarctica and Petrolina, Brazil

Authors

Thomas Martin, Utah State University
M.J. Taylor, Utah State University
K. Nielsen, Utah State University
P.-D. Pautet, Utah State University
M.J. Jarvis, Utah State University

Document Type

Article

Publication Date

5-17-2024

Abstract

Investigations of small-scale mesospheric gravity waves have been made from a number of sites around the globe. The Center for Atmospheric Space Sciences at Utah State University has operated all-sky CCD imagers at Petrolina (9°S), Brazil and Halley (76°S), Antarctica, to capture images of gravity waves in the OH airglow emission (altitude `87km). A recently proven method utilizing "Keograms" has been used to analyze larger-scale gravity waves (e.g. Taylor et. al, 2009). Keograms were initially developed to study auroral motions at high-latitudes. Using the same technique we have investigated the characteristics, such as horizontal wavelength, phase speed, and the observed period, at high-latitude and the equatorial region of both the larger- and small-scale gravity waves. Further analysis using this method will be applied to other available data sets to develop a better understanding of the characteristics and variability of larger-scale mesospheric gravity waves.

Comments

Publication date does not represent date presented.

Recommended Citation

Martin, Thomas; Taylor, M.J.; Nielsen, K.; Pautet, P.-D.; and Jarvis, M.J., "Comparison of Large- and Small-Scale Gravity Waves Over Halley, Antarctica and Petrolina, Brazil" (2024). All Physics Faculty Publications. Paper 2184.
https://digitalcommons.usu.edu/physics_facpub/2184