Accounting for meteorological effects in the detector of the charged component of cosmic rays

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 (Rc = 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.

OZONE CONTENT OVER THE RUSSIAN FEDERATION IN THE SECOND QUARTER OF 2021

The review is compiled on the basis of the results of the operation of the total ozone (TO) monitoring over the CIS and Baltic countries functioning in the operational mode at the Central Aerological Observatory (CAO). The monitoring system uses data from the national network equipped with M-124 filter ozonometers that is under the methodological supervision of the Main Geophysical Observatory. The quality of the functioning of the entire system is operationally controlled at CAO by the comparison with the OMI satellite equipment observations (NASA, USA). Basic TO observation data are generalized for each month of the second quarter of 2021 and for the second quarter. Data of routine observations of surface ozone values in the Moscow region are also considered.

Accounting for meteorological effects in the the detector of the charged component of cosmic rays

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, S55.56 °, W37.3 °; Rc = 2.12 GV) in 2017. Based on the data obtained in 2019–2020, the barometric and temperature 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.

RPCA FOR INCORRECT UPPER AIR RADIO SOUNDING DATA DETECTION

The “Middle Atmosphere” Regional Information and Analytic Center (Central Aerological Observatory) works out algorithms for analyzing the quality of aerological data based on machine learning methods. Different approaches to the data preparation are described, the examples of data that were rejected using standard approaches are given, the ways to develop and improve the quality of aerological information transmitted to the WMO international network are outlined.

TRAJECTORY STUDIES OF THE MIDDLE ATMOSPHERE

A short description and some applications of the trajectory and dispersion models developed in Central Aerological Observatory (CAO) for studying the stratospheric and tropospheric transport of pollutants are presented. The TRACAO trajectory model is applied to investigate the processes related to the ozone depletion in the winter polar stratosphere, in order to study the mid-latitude stratosphere-troposphere exchange, as well as to analyze balloon and aircraft (M55 “Geophysics,” Yak-42D “Roshydromer”) observations. Then based on the TRACAO, the GLADIM dispersion model that simulates trajectories of the set of particles with the eddy diffusion parameterization and determines the pollutant concentration at the regular grid points, was developed. The dispersion model was applied to simulate volcanic ash dispersion and carbon dioxide profile reconstruction. The model validation was done by comparisons with the results of the widely used FLEXPART model. Nowadays these models are used at the “Middle Atmosphere” Regional Information and Analytic Center established in CAO.

NUMERICAL GLOBAL MODELS OF THE IONOSPHERE, OZONOSPHERE, TEMPERATURE REGIME, AND CIRCULATION FOR ALTITUDES OF 0-130 KM. RESULTS AND PERSPECTIVES

An overview of the work on the development and use of global numerical models of the atmosphere, that has been carried out in the Laboratory for Atmospheric Chemistry and Dynamics (Central Aerological Observatory), is presented. The models were created in the framework of the Roshydromet plans.

MICROWAVE REMOTE SENSING OF THE ATMOSPHERE: FROM PRINCIPAL POSSIBILITIES TO ROUTINE MEASUREMENTS

The article is aimed to retrospective analysis of the results in microwave remote sensing of the atmosphere since 60 ages of the twenty century up to the recent time. Article describes the development stages for passive remote sensing of the atmosphere in the Central Aerological Observatory. It contains the first experimental works with super sensitive microwave radio receiver, which confirms output from quantum mechanics calculations regarding atmosphere gases absorption. The way from this first steps to the recent routine microwave sounding on the observation net of Roshydromet is described. Specially emphasized the results of ground based and aircraft microwave researches, which were obtained with the scientific priority at the time of their revealing and which are still actual up to the now days. The values of these results are demonstrated by the utilization of it in the current weather modification projects and urban meteorology projects.

Ozone Content over the Russian Federation in 2020

The review is based on the results of operation of the total ozone (TO) monitoring system in Russia and neighboring countries that functions in the operational mode at the Central Aerological Observatory. The monitoring system uses data from the national network equipped with M-124 filter ozonometers being under the methodological supervision of the Main Geophysical Observatory. The quality of the functioning of the entire system is operationally controlled using the OMI satellite equipment observations (NASA, USA). Basic TO observation data are generalized for each month of the fourth quarter of 2020, for the fourth quarter, and for the whole year. Data of routine observations of surface ozone in the Moscow region are also presented.

INTENDED PRECIPITATION ENHANCEMENT. THE RESULTS OF STUDIES AND OPERATIONAL ACTIVITIES

The paper presents the results of long-term studies in the field of precipitation enhancement performed at the Central Aerological Observatory. The studies were carried out at specially equipped weather sites in different geographical regions, which made it possible to obtain experimental data on the effectiveness of weather modification operations in different climatic zones. The results allowed developing an operational technology of precipitation enhancement and implementing relevant projects both in Russia and abroad. Operational results are also presented.

RESEARCH OF EFFICIENCY OF NANOSIZED POWDERED ICE-FORMING REAGENTS

The article discusses nanosized powdery ice-forming reagents, which are supposed to be used in the works on active action on clouds in order to regulate precipitation and hail suppression, as well as to dissipate supercooled fog. These ice-forming reagents have been obtained by the levilite method, in which a layer of silver iodide is deposited on the surface of nanosilica particles. Description of the methodology for studying the effectiveness of nanosized powdery ice-forming reagents, as well as the results of laboratory studies of their effectiveness obtained in different organizations is given. The results of studies of ice-forming reagents carried out at laboratories of RPA “Typhoon”, High-Mountain Geophysical Institute, JSC “Cheboksary production association n.a. V.I. Chapaev” and ANO “Agency of atmospheric technologies” have shown that the efficiency of these reagents differs significantly from those obtained earlier in the Central Aerological Observatory. It has been suggested that the low efficiency of nanosized ice-forming reagents is due to the high aggregation of the original nanosilicum particles, resulting from the high surface activity of these particles. Possible ways to reduce the degree of aggregation of powders by modifying the surface of the original nanoparticles aimed at decreasing the high activity of the nanosilica particles surface are discussed.