Modelling of the ionosphere/thermosphere behaviour during the April 2002 magnetic storms: A comparison of the UAM results with the ISR and NRLMSISE-00 data

Physical mechanisms responsible for forming the 4-peak longitudinal structure of the 135.6nm ionospheric emission: First results from the Canadian IAM

“…The timestep in the ionospheric component (for block 3 only) was set to 15 s so that the E Â B drift during one timestep is always less than the spatial grid cell even in the high-latitude areas during magnetic storms (this accommodates the magnetic storms which occurred during the simulation period). The UAM has been used in numerous simulations of the Earth's upper atmosphere behavior under different geophysical conditions and has shown reasonable agreement with available observations (see Namgaladze et al (2006), Knyazeva et al (2012) and references therein).…”

“…In particular, the neutral composition change (O/N 2 ratio) was not considered in our study in spite of its importance for storm time effects (Namgaladze et al, 2006). However this change does not directly influence the longitudinal modulation of the EIA and hence lies out of the scope of the current study.…”

Characteristics of the O+(2P–2D) 732.0 and 733.0 nm airglow emissions observed with WINDII and simulated with the C‐IAM

“…The Canadian Ionosphere and Atmosphere Model (Canadian IAM or C‐IAM) is a new project aimed at the development of the whole atmosphere modeling capabilities in Canada. The first version of the C‐IAM is composed of the extended Canadian Middle Atmosphere Model [ Beagley et al , ] and the Upper Atmosphere Model [ Namgaladze et al , ], currently coupled in a one‐way manner. The model is described in a later section.…”

Numerical Simulation of the Influence of the may 2–3, 2010 Geomagnetic Storm on HF Radio-Wave Propagation in the Ionosphere

“…Even the International Reference Ionosphere (IRI) model [4]), which describes well the ionospheric behavior in a quiet geomagnetic environment does not reproduce ionospheric disturbances during storms [5,6]. However, different threedimensional global numerical models of the Earth's upper atmosphere describe these disturbances well enough [7][8][9][10][11]. In this paper, as a model of the medium, we used a global self-consistent model of the thermosphere, ionosphere, and protonosphere (GSM TIP model [12,13]) developed in the Western Division of N. V. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of the Russian Academy of Sciences (WD IZMIRAN).…”