Zonal wave structures in the nighttime tropospheric density and temperature and in theDregion ionosphere over Mars: Modeling and observations

摘要: [1] We report the first model results of zonal wind perturbations in nighttime D region ionosphere Mars during winter and summer seasons at latitude ranges 60°S–64°S 64.7°N–67.3°N, respectively. The production rate, ion density, electron density are calculated between longitudes 0° 360°E due to impact galactic cosmic rays on troposphere these latitudes. In this calculation, temperature air used from measurements made by radio occultation experiment board Global Surveyor low solar activity period. distribution temperature, fitted a least squares method altitudes near surface, 15 km 30 km. modes seasonal winds also Fourier analysis heights. These suggest mode wave number 2 northern high latitudes numbers 3 8 southern latitudes, It is found that consists permanent peak, which varies with east both hemispheres. semidiurnal tides dominate peak oscillation seasons, water cluster ions H3O+(H2O)n, NO2−(H2O)n CO3−(H2O)n major species Mars.