Characteristics of equatorial gravity waves derived from mesospheric airglow imaging observations

Details Characteristics of equatorial gravity waves derived from mesospheric airglow imaging observations Characteristics of equatorial gravity waves derived from mesospheric airglow imaging observations

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009angeo..27.1625s&link_type=abstract

Annales Geophysicae, Volume 27, Issue 4, 2009, pp.1625-1629

Physics

3

Scientific paper

We present the characteristics of small-scale (<100 km) gravity waves in the equatorial mesopause region derived from OH airglow imaging observations at Kototabang (100.3° E, 0.2° S), Indonesia, from 2002 to 2005. We adopted a method that could automatically detect gravity waves in the airglow images using two-dimensional cross power spectra of gravity waves. The propagation directions of the waves were likely controlled by zonal filtering due to stratospheric mean winds that show a quasi-biennial oscillation (QBO) and the presence of many wave sources in the troposphere.

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