Coincident Observations by the Kharkiv IS Radarand Ionosonde, DMSP and Arase (ERG) Satellites, and FLIP Model Simulations: Implicationsfor the NRLMSISE-00 Hydrogen Density, Plasmasphere, and Ionosphere

0492721 - ÚFA 2019 RIV US eng J - Journal Article
Kotov, D.V. - Richards, P. G. - Truhlík, Vladimír - Bogomaz, O. V. - Shulha, M. - Maruyama, N. - Hairston, M. - Miyoshi, Y. - Kasahara, Y. - Kumamoto, A. - Tsuchiya, F. - Matsuoka, A. - Shinohara, I. - Hernández-Pajares, M. - Domnin, I. F. - Zhivolup, T.G. - Emelyanov, L. Ya. - Chepurnyy, Ya. M.
Coincident Observations by the Kharkiv IS Radarand Ionosonde, DMSP and Arase (ERG) Satellites, and FLIP Model Simulations: Implicationsfor the NRLMSISE-00 Hydrogen Density, Plasmasphere, and Ionosphere.
Geophysical Research Letters. Roč. 45, č. 16 (2018), s. 8062-8071. ISSN 0094-8276. E-ISSN 1944-8007
R&D Projects: GA MŠMT(CZ) LTAUSA17100
Institutional support: RVO:68378289
Keywords : thermospheric hydrogen * 100% underestimation by NRLMSISE-00 model * observations and simulations * plasmasphere * ionosphere * prominent effects of weak magnetic storm
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 4.578, year: 2018
https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL079206

This paper reports the results of ionosphere and plasmasphere observations with the Kharkiv incoherent scatter radar and ionosonde, Defense Meteorological Satellite Program, and Arase (ERG) satellites and simulations with field line interhemispheric plasma model during the equinoxes and solstices of solar minimum 24. The results reveal the need to increase NRLMSISE-00 thermospheric hydrogen density by a factor of similar to 2. For the first time, it is shown that the measured plasmaspheric density can be reproduced with doubled NRLMSISE-00 hydrogen density only. A factor of similar to 2 decrease of plasmaspheric density in deep inner magnetosphere (L approximate to 2.1) caused by very weak magnetic disturbance (D-st > -22nT) of 24 December 2017 was observed in the morning of 25 December 2017. During the next night, prominent effects of partially depleted flux tube were observed in the topside ionosphere (similar to 50% reduced H+ ion density) and at the F2-layer peak (similar to 50% decreased electron density). The likely physical mechanisms are discussed.
Permanent Link: http://hdl.handle.net/11104/0286114