Influence of background winds and lidar temperatures on theestimation of dynamic parameters of gravity waves observed in images of the mesospheric airglow layers

• Autores: Fábio Vargas, Paulo Batista, Delano Gobbi, B. R. Clemesha, Dale Simonich
• Localización: Óptica pura y aplicada, ISSN-e 2171-8814, Vol. 44, Nº. 1 (MAR), 2011 (Ejemplar dedicado a: V Workshop LIDAR measur. in Latinamerica), págs. 107-113
• Idioma: inglés
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• Resumen

  • A model has been developed to account the perturbation of gravity waves disturbing the volume emission rate of mesospheric airglow layers. The model was combined with an image processing algorithm to retrieve the dynamic parameters of gravity waves modulating the airglow radiance due to its propagation through the emission layers. The procedure provided all intrinsic wave parameters from the images but there are concerns about its accuracy if neither measured wind nor temperature information is taken into account before the parameter estimation. In this work we use vertical profiles of background wind provided by meteor radar and temperature by a Na Lidar as input in the estimation procedure to investigate the sensitivity of this method and explore the influence of those two atmospheric fields on the results. The main goal is to identify points for improvements of the theoretical model and the parameter estimation accuracy. Key words: Gravity Waves, Airglow Imaging, Meteor Radar Winds,. Lidar Temperature.