Global modelling study (GSM TIP) of the ionospheric effects of excited N 2 , convection and heat fluxes by comparison with EISCAT and satellite data for 31 July 1990

• Main Authors: Korenkov, Yu. N., Klimenko, V. V., Förster, M., Surotkin, V. A., Smilauer, J.
• Other Authors: West Department of IZMIRAN, Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN), Russian Academy of Sciences Moscow (RAS)-Russian Academy of Sciences Moscow (RAS), Max-Planck-Institut für Extraterrestrische Physik (MPE), Institute of Atmospheric Physics Prague (IAP), Czech Academy of Sciences Prague (CAS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 1996
• Subjects: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; EISCAT
• Online Access: https://hal.science/hal-00316260; https://hal.science/hal-00316260/document; https://hal.science/hal-00316260/file/angeo-14-1362-1996.pdf

International audience Near-earth plasma parameters were calculated using a global numerical self-consistent and time-dependent model of the thermosphere, ionosphere and protonosphere (GSM TIP). The model results are compared with experimental data of different origin, mainly EISCAT measurements and simultaneous satellite data ( N e and ion composition). Model runs with varying inputs of auroral FAC distributions, temperature of vibrationally excited nitrogen and photoelectron energy escape fluxes are used to make adjustments to the observations. The satellite data are obtained onboard Active and its subsatellite Magion-2 when they passed nearby the EISCAT station around 0325 and 1540 UT on 31 July 1990 at a height of about 2000 and 2200 km, respectively. A strong geomagnetic disturbance was observed two days before the period under study. Numerical calculations were performed with consideration of vibrationally excited nitrogen molecules for high solar-activity conditions. The results show good agreement between the incoherent-scatter radar measurements ( N e , T e , T i ) and model calculations, taking into account the excited molecular nitrogen reaction rates. The comparison of model results of the thermospheric neutral wind shows finally a good agreement with the HWM93 empirical wind model.