All Physics Faculty Publications

Document Type

Article

Journal/Book Title/Conference

Geophysical Research Letters

Volume

22

Issue

20

Publisher

American Geophysical Union

Publication Date

10-1995

First Page

2853

Last Page

2856

DOI

10.1029/95GL02949

Abstract

Simultaneous observations of gravity waves using an Na wind/temperature lidar and a multi‐wavelength all‐sky nightglow imager were obtained, for the first time, during the ALOHA‐93 campaign. A novel investigation of intrinsic wave parameters has been made by combining measurements of the horizontal wave components imaged in four nightglow emissions (height range ∼80–100 km) with Na lidar soundings of the horizontal wind field and temperature profiles over the same height interval. On October 19 both instruments registered marked monochromatic wave motions. The intrinsic periods of several of these waves have been determined and were found to vary considerably with altitude, often resulting in a significant increase over their observed wave periods. It is shown that these two instrumental techniques generally sampled different regions of the gravity wave spectrum: the lidar exhibiting most sensitivity to short vertical wavelength waves (less than about 10 km) while the imager was most responsive to larger vertical wavelength waves. This study illustrates the significant advantages of combining wind/temperature lidar and multi‐wavelength image observations for intrinsic gravity wave measurements.

Comments

Published by the American Geophysical Union in Geophysical Research Letters: http://www.agu.org/pubs/crossref/1995/95GL02949.shtml

Publisher PDF is available for download through the link above.

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