The thermosphere general circulation modeling with the parametrization of radiative processes

The paper presents a new version of the global three-dimensional general circulation model of the Earth’s thermosphere (90-500 km) with high spatial resolution (2 × 2.5 × 80), including consistent calculation of radiative processes. Based on a detailed analysis of the reproduction of the various components of radiation transfer a good agreement of radiation balance with empirical data is shown in the new model. Analytical estimations and model results proved that the thermosphere global state formation is essentially determined by the ratio between the radiation heating and heat sink due to molecular parameters, as well as by the lower boundary conditions. On the base of the preliminary model identification with empirical data a satisfactory reproduction of the thermal balance and the thermospheric general circulation features is shown.