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Papers by Galina Bazilevskaya

In this paper, we discuss the influence of meteorological effects on the data of the ground insta... more In this paper, we discuss the influence of meteorological effects on the data of the ground installation CARPET, which is a detector of the charged component of secondary cosmic rays (CRs). This device is designed in the P.N. Lebedev Physical Institute (LPI, Moscow, Russia) and installed at the Dolgoprudny scientific station (Dolgoprudny, Moscow region; 55.56 • N, 37.3 • E; geomagnetic cutoff rigidity (R c = 2.12 GV) in 2017. Based on the data obtained in 2019-2020, the barometric and temperature correction coefficients for the CARPET installation were determined. The barometric coefficient was calculated from the data of the barometric pressure sensor included in the installation. To determine the temperature effect, we used the data of upper-air sounding of the atmosphere obtained by the Federal State Budgetary Institution "Central Aerological Observatory" (CAO), also located in Dolgoprudny. Upper-air sounds launch twice a day and can reach an altitude of more than 30 km.

Energetic particle precipitation leads to ionization in the Earth's atmosphere, initiating the fo... more Energetic particle precipitation leads to ionization in the Earth's atmosphere, initiating the formation of active chemical species which destroy ozone and have the potential to impact atmospheric composition and dynamics down to the troposphere. We report on one exceptionally strong high-energy electron precipitation event detected by balloon measurements in geomagnetic midlatitudes on 14 December 2009, with ionization rates locally comparable to strong solar proton events. This electron precipitation was possibly caused by waveparticle interactions in the slot region between the inner and outer radiation belts, connected with still poorly understood natural phenomena in the magnetosphere. Satellite observations of odd nitrogen and nitric acid are consistent with widespread electron precipitation into magnetic midlatitudes. Simulations with a 3D chemistryclimate model indicate the almost complete destruction of ozone in the upper mesosphere over the region where high-energy electron precipitation occurred. Such an extraordinary type of energetic particle precipitation can have major implications for the atmosphere, and their frequency and strength should be carefully studied.

40th COSPAR Scientific Assembly, 2014

Database of Solar Proton Events, 1970

The long-term observations of charged particle fluxes in the atmosphere at the polar and mid lati... more The long-term observations of charged particle fluxes in the atmosphere at the polar and mid latitudes are conducted by the Lebedev Physical Institute since 1957 up to the present time. Meteorological balloons with a Geiger counter telescope are launched several times a week in the Arctic, Antarctic and Moscow regions. Simple instrumentation returns the secondary cosmic ray fluxes at varies altitudes from the ground level up to the 30-35 km. Since the geomagnetic field and the atmosphere act as an energy analyzer it is possible to estimate the intensity of galactic cosmic rays with energy above 100 and 1500 MeV during the whole period of observations and energy spectra of solar cosmic rays (when available) at the atmospheric boundary. We present the particle absolute fluxes and energy spectra, discuss the reliability of the results obtained and compare the results with data of measurements performed by the neutron monitor network and the near-Earth orbit spacecraft. We argue for nec...

Uspekhi Fizicheskih Nauk, 2011

Science of The Total Environment

The Astrophysical Journal

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015)

Database of Solar Proton Events

Cosmic Research

We present new observational data on the phenomena of extremely high activity on the Sun and in t... more We present new observational data on the phenomena of extremely high activity on the Sun and in the heliosphere that took place in October-November 2003. A large variety of solar and heliospheric parameters give evidence that the interval under consideration is unique over the entire observation time. Based on these data, comparing them with similar situations in the past and using available theoretical concepts, we discuss possible cause-and-effect connections between the processes observed. The paper includes the first results and conclusions derived by the collaboration "Solar Extreme Events-2003" organized in Russia for detailed investigations of these events. As a result of our consideration, it is beyond question that the physical causes of solar and heliospheric phenomena in October-November 2003 are not exclusively local and do not belong only to the active regions and solar atmosphere above them. The energy reservoirs and driving forces of these processes have a more global nature. In general, they are hidden from an observer, since ultimately their sources lie in the subphotospheric layers of the Sun, where changes that are fast and difficult to predict can sometimes take place (and indeed they do). Solar flares can serve as sufficiently good tracers of these sudden changes and reconstructions on the Sun, although one can still find other diagnostic indicators among the parameters of magnetic fields, motions of matter, and emission characteristics. † Deceased.

Database of Solar Proton Events, 2000

Каталог солнечных протонных событий 23-го цикла солнечной активности (1996 − 2008 гг.

The observations of solar proton fluxes from boards of "Meteor", GOES satellites, galac... more The observations of solar proton fluxes from boards of "Meteor", GOES satellites, galactic cosmic ray fluxes measured in the stratosphere by balloons, solar radio irradiance and total ozone records (ground based and TOMS data) for 1960-2000 period, has been used to investigate spatial and temporal structure of total ozone response to cosmic influence. Linear simple and multiply regression analysis has