Atmospheric Tidal Dynamics and E- and D-Region Physics: Proceedings of the CO.1 and C4.1 Symposia of COSPAR Scientific Commission C Which Were Held During the Thirty-first COSPAR Scientific Assembly, Birm(v.21/6 Advances in Space Research)

Paperback. Our knowledge of the dynamics of the upper atmosphere has increased substantially with the launch of NASA's Upper Atmosphere Research Satellite (UARS). The winds associated with tides and planetary scale disturbances have been found to be significantly larger than expected. What has been even more surprising is the extent to which airglow variability is controlled by these dynamics. Variations in airglow emission rate have been observed for many decades, but until the global scale picture became available, their origin remained a mystery. Hence this session on Influence of Tides on Species Concentrations was particularly timely. This volume consists of papers presented at the session, including model results, satellite observations, and ground-based observations. What is clear from this volume is the very dominant role of dynamics in airglow variability and species concentrations. Experimental papers deal with GLO observations of E- and F-

Table of Contents:
Influence of Tides on Species Concentrations. Preface (G.G. Shepherd). The photochemistry of the MLT oxygen airglow emissions and the expected influences of tidal perturbations (I.C. McDade). Empirical semidiurnal migrating tide model for the upper mesosphere/lower thermosphere (Yu.I. Portnyagin, T.V. Solovjova). Seasonal and local time variations in the O( 1 S) green line, O 2 atmospheric band, and OH meinel band emissions as measured by the high resolution doppler imager (W.R. Skinner et al. ). Seasonal variations of temperature near the mesopause from Fabry-Perot interferometer observations of OH meinel emissions (G.H. Choi et al. ). Horizontal parameters of the internal gravity waves registered over Yakutia (P.P. Ammosov, G.A. Gavrilyeva). E- and D-Region Physics and Modelling. Preface (W. Singer). Model calculations of the silicon and magnesium chemistry in the mesosphere and lower thermosphere (J. Fritzenwallner, E. Kopp). GLO observations of E- and F-region metal atoms and ions (J.A. Gardner et al. ). The global 3D-calculation of the distribution of the plasma components within the 80 to 130 km height range (G. Sonnemann et al. ). Comparison between an empirical and a theoretical model of the D -region (M. Friedrich, K.M. Torkar). Ion-acoustic instability caused by neutral wind action on sporadic E-layers (C.-V. Meister et al. ).