Please use this identifier to cite or link to this item:
Title: A study into the effect of the diurnal tide on the structure of the background mesosphere and thermosphere using the new coupled middle atmosphere and thermosphere (CMAT) general circulation model
Authors: Harris, M. J.
Arnold, N. F.
Aylward, A. D.
First Published: 2002
Publisher: European Geosciences Union (EGU), Copernicus Publications, Springer Verlag
Citation: Annales Geophysicae: Atmospheres Hydrospheres and Space Science, 2002, 20, pp.225-236
Abstract: A new coupled middle atmosphere and thermosphere general circulation model has been developed, and some first results are presented. An investigation into the effects of the diurnal tide upon the mean composition, dynamics and energetics was carried out for equinox conditions. Previous studies have shown that tides deplete mean atomic oxygen in the upper mesosphere-lower thermosphere due to an increased recombination in the tidal displaced air parcels. The model runs presented suggest that the mean residual circulation associated with the tidal dissipation also plays an important role. Stronger lower boundary tidal forcing was seen to increase the equatorial local diurnal maximum of atomic oxygen and the associated 0(1S) 557.7 nm green line volume emission rates. The changes in the mean background temperature structure were found to correspond to changes in the mean circulation and exothermic chemical heating.
DOI Link: 10.5194/angeo-20-225-2002
Type: Article
Rights: © Author(s) 2002. This work is distributed under the Creative Commons Attribution 3.0 License. Available from the publisher website at
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat 
angeo-20-225-2002.pdf2.79 MBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.