6:15 PM - 7:30 PM
[PCG32-P08] Study about the structure of Venusian lower atmosphere
Keywords:Venus atmosphere, Venus Express, Radio occultation, GCM
The analysis period of data is 2006 to 2010, and the number of temperature profiles is 280. All the temperature profiles are classified at each latitude bin, which is divided every 10? degree, and averaged in the vertical direction with the width of 1 km. In this study the hemispheric and localtime dependences are not considered. As a result, there is a clear difference of the atmospheric structure between low and middle altitudes and high latitudes. In low and middle latitudes the neutral stable layer is located in the altitude of 50-60 km, and the atmosphere is weakly stable under 50 km altitude. In the high latitudes the neutral stable layer is consecutively located in the altitude of 40-60 km. In this presentation we will discuss what generates the difference of the atmospheric structure below the cloud layer by comparing with the numerical result obtained in a general circulation model named AFES.