# Laboratory of Computational Experiments

эта страница также доступна на русском языке посмотреть на русском языкеHead of laboratory: Victor S. Mingalev (doctor of physics & mathematics, professor).

## Main scientific purpose

Study of the irregular structure and dynamics of the atmosphere and ionosphere of the Earth by means of mathematical modeling

## Principal tasks

- Simulation of the formation of the global neutral wind system of the Earth’s atmosphere under different geophysical conditions
- Modeling of the mechanisms responsible for the formation of cyclones in the lower atmosphere
- Numerical simulation of the spatial structure of the high-latitude F-layer ionosphere
- Simulation of the F-layer modification by high-power HF radio waves

## Mathematical models developed and utilized

- A mathematical model of the global neutral wind system of the Earth’s atmosphere, which produces 3D planetary distributions of the zonal, meridional, and vertical components of the neutral wind velocity and neutral gas density at the levels of the troposphere, stratosphere, mesosphere, and lower thermosphere, the global temperature field being the input of the model.
- A regional version of the above model, which additionally produces the neutral gas temperature in the altitude range from 0 to 15 km over limited regions of the Earth’s surface
- A mathematical model of the convecting high-latitude ionosphere which produces 3D distributions of the electron density, positive ion velocity and electron and ion temperatures at the F-layer altitudes
- A version of the model of the convecting F-layer ionosphere, which can be modified by high-power HF radio waves

## Current research of the laboratory of computational experiments

includes:

- The influence of the horizontal non-uniformity of the neutral gas temperature on the global atmosphere circulation under different geophysical conditions.
- Investigation of the initial stage of the formation of cyclones in the lower atmosphere
- Effects of various physical processes on the spatial structure of the high-latitude F-region ionosphere
- The dynamics of irregularities produced by high-power HF radio waves pumped into the F-region ionosphere

## Scientific relations

Over the last years the lab of computational experiments has been conducting joint researches with the following Institutes and Universities:

- Space Research Institute of the Russian Academy of Sciences, Moscow
- Space Research Institute of the Austrian Academy of Sciences, Graz
- Institute of Automated Design of the Russian Academy of Sciences, Moscow
- Moscow State University, Moscow
- University of Aerospace Instrumentations, St. Petersburg

The lab of computational experiments takes part in the basic research program “Environment in changeable climate conditions: extreme natural phenomena and catastrophes” of the Presidium of the Russian Academy of Sciences.

The scientific researchers of the lab participate in the program “Plasma processes in the solar system” of the Division Physical Sciences of the Russian Academy of Sciences.

## Future plans

- Improvement of the developed mathematical models by applying new numerical methods
- Adaptation of the existing mathematical model of the Earth’s atmosphere for numerical simulation of global circulations of atmospheres of other planetary bodies
- Application of the developed numerical models to simulations of the irregular structure and dynamics of the atmosphere and ionosphere of the Earth

## Main publications

Mingalev I. V., Mingalev V. S. The global circulation model of the lower and middle atmosphere of the Earth with a given temperature distribution // Mathematical Modeling. – 2005. – V.17, No.5. – P. 24-40 (in Russian)

Mingalev I.V., Mingalev V.S., Mingalev O.V., Kazeminejad B., Lammer H., Biernat H.K., Lichtenegger H.I.M., Schwingenschuh K., Rucker H.O. First simulation results of Titan’s atmosphere dynamics with a global 3-D non-hydrostatic circulation model // Annales Geophysicae. – 2006.- V. 24, No.8. – P. 2115-2129

Andreev M.Yu., Lukicheva T.N., Mingalev V. S. Model study of the effect of the main ionospheric trough on oblique radiowave propagation // Geomagnetism and Aeronomy. – 2006. – V.46, No.1. – P. 94-100

Mingalev O.V., Mingalev I. V., Mingalev V. S. Two-dimensional numerical simulation of dynamics of small-scale irregularities in the near-Earth plasma // Cosmic Research. – 2006. – V.44, No.5. – P. 398-408

Belotserkovskii O.M., Mingalev I.V., Mingalev V.S., Mingalev O.V., Oparin A.M. Mechanism of the appearance of a large-scale vortex in the troposphere above a nonuniformly heated surface // Doklady Earth Sciences. – 2006. – V.411, No.8. – P. 1284-1288

Borodachev L.V., Mingalev I.V., Mingalev O.V. The numerical approximation of discrete Vlasov-Darwin model based on the optimal reformulation of field equations // Mathematical Modeling. – 2006. – V.18, No.11. – P. 117-125 (in Russian)

Mingalev I.V., Mingalev V.S., Mingaleva G.I. Numerical simulation of the global distributions of the horizontal and vertical wind in the middle atmosphere using a given neutral gas temperature field // J. Atmos. Solar-Terr. Phys. – 2007. – V. 69, Nos.4/5. – P. 552-568

Andreev M.Yu., Mingaleva G.I., Mingalev V. S. Numerical simulation of the structure of the high-latitude ionospheric F region during meridional HF propagation // Geomagnetism and Aeronomy. – 2007. – V.47, No.4. – P. 487-495

Andreev M.Yu., Blagoveshchensky D.V., Vystavnoi V.M., Mingalev V.S., Mingaleva G.I. Interpretation of experimental data on HF propagation on the St. Petersburg-Spitsbergen path // Geomagnetism and Aeronomy. – 2007. – V.47, No.4. – P. 502-509

Mingaleva G.I., Mingalev V.S., Mingalev I.V. Model prediction of the most effective frequency for the large-scale modification of the midlatitude ionospheric F2 layer by powerful HF radiowaves // Geomagnetism and Aeronomy. – 2008. – V.48, No.1. – P. 66-74

Mingalev I.V., Mingalev O.V., Mingalev V.S. Model simulation of the global circulation in the middle atmosphere for January conditions // Advances in Geosciences. – 2008. – V. 15, No.4. – P. 11-16

Mingalev I.V., Mingalev V.S., Mingalev O.V., Kazeminejad B., Lammer H., Biernat H.K., Lichtenegger H.I.M., Schwingenschuh K., Rucker H.O. Numerical simulation of circulation of Titan’s atmosphere: Interpretation of measurements of Huygens probe // Cosmic Research. – 2009. – V.47, No.2. – P. 114-125

Mingaleva G.I., Mingalev V.S., Mingalev I.V. Model simulation of the large-scale high-latitude F-layer modification by powerful HF waves with different modulation // J. Atmos. Solar-Terr. Phys. – 2009. V. 71, No.5. – P. 559-568

Mingalev O.V., Mingalev I. V., Mingalev V. S., Khodachenko M.L. Analytical configurations of a force-free magnetic cylinder in the solar wind // Geomagnetism and Aeronomy. – 2009. – V.49, No.5. – P. 574-581

Blagoveshchensky D.V., Andreyev M.Yu., Mingalev V.S., Mingaleva G.I., Kalishin A.S. Physical and model interpretation of HF radio propagation on the St. Petersburg–Longyearbyen (Svalbard) path // Advances in Space Research.- 2009.-V.43, No.12 . – P. 1974-1985