Global comparison of the model results of GSM TIP with IRI for summer conditions

Korenkov, Yu. N.; Клименко, В. В.; Бессараб, Ф. С.

doi:10.1016/j.asr.2008.08.016

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The adopted auroral precipitating energy flux and spatial distribution are typical for lower geomagnetic conditions and in accordance with the statistical model of Hardy et al (1985). The model has been described in detail by Namgaladze et al (1988Namgaladze et al ( , 1990Namgaladze et al ( , 1991, and its application has been presented in the papers by Korenkov et al (1996Korenkov et al ( , 1998Korenkov et al ( , 2003Korenkov et al ( , 2009). …”

Section: Brief Gsm Tip Descriptionmentioning

confidence: 99%

Global modeling of hot O distribution in the upper thermosphere

Бессараб¹,

Korenkov²

2011

Earth Planet Sp

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The existence of hot oxygen (hot O, O h ) in the upper thermosphere is mainly confirmed by optical observations of high-altitude airglow. In the experiments described here, a peak of O h population was found at an altitude of approximately 550 km with a temperature of about 4000 K. Although it was shown that O h concentration could reach a value of 1-2% with respect to ambient (cold) O, a realistic global distribution of O h concentration and temperature has not been established. The presence of non-thermal atoms in the thermosphere leads to variations in the thermo-dynamical regime in the upper atmosphere. The major chemical processes involved in O h production were taken into account in the time-dependent, Global Self-consistent Model of Thermosphere, Ionosphere and Protonosphere (GSM TIP) of the Earth in order to simulate global distribution of O h concentration and temperature (T h ). Calculations were carried out in the geomagnetic coordinate system for moderate solar, quiet geomagnetic conditions, and winter season. It was shown that the maximum O h is located at −60• latitude, 300• longitude, and 24 UT. The T h maximum is about 2050 K. This temperature and O h concentration cause an increase in neutral gas temperature at high thermosphere by ∼100 K during daytime and by ∼70 K during nighttime. Variations in the neutral gas velocity circulation were calculated. The maximum increase in neutral velocity was about 36 m/s, corresponding to = 50• , = 180• in the northern and = −50• , = 270• in the southern hemisphere.

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