| dc.description.abstract | Ionosphere plasma concentration and dynamic transport numerical model is an alternative platform to carry out variety of researches such as irregularities, principal species chemistry, pho- tochemistry, and metallic mass input estimation, etc. Our efforts to develop a time-dependent theoretical ionosphere model in low and mid-latitude have been established and the model is so- called Mid-Latitude Ionosphere Layer Model (the MLIL model) which is capable of simulating time-varying density profiles of 41 major species in ionosphere with 30s temporal resolution and 0.2km spacial resolution by means of solving nonlinear stiff coupling Differential Algebraic Equa- tions (DAEs) system. The MLIL model is established on the basis of former researches of chemistry, atmosphere constituent photochemistry, quantity estimation of metallic species input to upper at- mosphere from meteoroids, and dynamic transport forces simulation. Nevertheless, in order to more comprehensively modeling reality of ionosphere environment, we have made following efforts to our MLIL model: organization/adoption of high-resolution photoionization/photoabsorption cross sections and branching ratios for major neutral gases, adoption of high-resolution solar flux measurements from SDO-EVE satellite missions, calculation of photoelectron impact, development of efficient solving algorithm for non-linear DAEs system without filter added (i.e. high-stability solving procedures), organization/identification of chemical reactions and their reaction rates be- tween 41 species in ionosphere region, where 41 species including 7 non-metallic ions: O+2 , NO+, O+(4S), O+(2D), O+(2P), N+2 , N+, 15 metallic ions: Fe+, Mg+, Na+, etc, 19 metallic neutrals: Fe, Mg, Na, etc. Overall, the new scientific finding includes investigation of three solar irradiance models, background density profiles compared with AE-C measurement, exploration of photoelec- tron impact on background ionosphere as well as on plasma layer structures, and ionospheric layer structures simulation and relevant researches. | en_US |