资源环境科技发展态势分析平台

Gravity waves (GWs) transport momentum and energy in the atmosphere, and it has become a difficult problem how to use satellites data to extract the horizontal parameters of GWs. We firstly applied the multi-channel maximum entropy method to the temperature profile triples based on the favorable conditions of satellite flight between year 2006 and 2007 after COSMIC launch, and analyzed the three-dimensional properties of GWs. The latitudinal and seasonal distribution of horizontal wavelengths of gravity waves were obtained. The momentum fluxes showed the maximum in the summertime subtropics and the wintertime high latitudes, which revealed possible convective sources in the summertime subtropics and mountain waves expected to occur in the winter jet region in the winter hemisphere high latitudes. The fluxes also showed the maximum at summer high latitudes, which were seldom reported.