Inversion Of The The Lunar Surface Thermal Inertia Based On Infrared And Microwave Brightness Temperature

Lunar thermal environment is of vital important to understand the origin and evolution of the Earth-Moon system and solar system. The comprehensive interpretation of the thermal inertia, surface temperature and rock abundance gives us a new view of lunar material properties.Lunar surface physical temperature is the key to retrieval thermal inertia. The infrared brightness temperature from Diviner Lunar Radiometer Experiment(DLRE) gives us a new way to modify the physical temperature based on the Christiansen Feature of lunar surface material. On the other hand, Microwave brightness temperature from Change's Lunar Microwave Sounder combined with Microwave radioactive transfer equation can compute the physical temperature profile. Through the comparison between Apollo heat flow data and the inversed physical temperature profile, the rationality of those methods can be verified.The apparent thermal inertia is the approximation of the real thermal inertia. Albedo, solar irradiance and surface physical temperature are used to estimate the apparent thermal inertia in this thesis. Thus, two different means to get the real thermal inertia: one is solving the definition equation of thermal inertia by temperature profile, and the other one is fitting the simulated temperature calculated by the heat conduction equation with the measured temperature.The relationship of physical temperature and thermal inertia is found. We come to the conclusion that both in two dimensions of time and space, the thermal inertia does have a strong correlation with the physical temperature, and they change in the same pattern. In addition, the features of the typical caterers are investigated. It can be seen that high rock abundance area has the high thermal inertia and small diurnal temperature variations.