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6programme. These studies include: aspects of regional-subregional-urban downscaling with focus on metro-
politan areas of St.Petersburg and Moscow; influence of dust transport from artificial tailing dumps and Cu-Ni
smelters of the Kola Peninsula on pollution of environment and health of population; aerosol feedbacks and
interactions at regional scale in the Arctic-boreal domain; estimation of spatio-temporal variability of elevated
black carbon episodes; influence of land cover changes on regional weather conditions/ patterns and its con-
sequences on meteorology for cases of extreme (with heatwave, heavy rains and snowfall) meteorological;
evaluation of atmosphere-land-sea surfaces interactions, and in particular, heat-moisture exchange/ regime
between these surfaces and for better understanding and forecasting of local meteorology in the Arctic; as-
sessment of potential pollution regional atmospheric transport resulted from wildfires in the Chernobyl zone;
analysis of urban meteorology and atmospheric pollution with integrated approach to high-resolution numeri-
cal modelling; and others.
The science education component (as part of the PEEX Educational Platform) for the Enviro-HIRLAM mod-
el is also realised, and though the organization and carrying out of the research training weeks. The latest face-
to-face trainings took place in April 2019 (Helsinki; Enviro-PEEX project) and June 2019 (Tyumen, Russia; AoF
ClimEco project), and next ones arranged and temporarily postponed into autumn 2021 (Moscow, ClimEco &
MegaCity projects) and spring 2022 in St.Petersburg; EDUFI PEEX-FRESReN project) in Russia. Short term visits
and trainings of young researchers are also expected as a part of the activities in the Enviro-PEEX(Plus) project,
MEGAPOLIS Russian Megagrant, and PEEX-CarbonPolygon collaboration, and others.
The model application areas are the following: aerosols-chemistry feedbacks studies on various meteoro-
logical variables; effects of various interactions of aerosols and cloud formation processes and radiative forcing
on urban-regional scales; boundary layer and sublayer parameterizations; urbanization processes impact on
changes in urban weather and climate on urban-subregional-regional scales; studies on atmospheric pollution
and its local impacts; improving prediction of extreme weather events; providing meteorology-chemistry input
to assessment studies for population and environment; integration modelling results into GIS environment for
further risk/vulnerability/consequences/etc. estimation, and others.
Influence of tsunami wave parameters on its passage through straits
An .G. Marchuk
Institute of Computational Mathematics and Mathematical Geophysics SB RAS
Email: mag@omzg.sscc.ru
DOI 10.24412/cl-35065-2021-1-01-38
The experience of historical tsunamis shows that when the tsunami wave passes the straits it loses a sig-
nificant part of its energy and becomes certainly lower in amplitude. Using numerical modeling, the influence
of wave length (period) on the ratio of tsunami height before and after it passes a narrow strait is considered.
The study was carried out both in the model configuration of the straits, and in the case of real geography and
the bottom relief.
Modeling of atmospheric diffusion taking into account wind impacts and building
A. V. Pavlova, S. E. Rubtsov, N. K. Istomin
Kuban State University, Krasnodar
Email: pavlova@math.kubsu.ru
DOI 10.24412/cl-35065-2021-1-01-39
The paper proposes a modification of the Margolus Neighborhood Cellular Automata (CA) [1], its spatial
implementation with the addition of such factors that affect the propagation of pollutant as wind and gravity,
which brings the model closer to the simulated process. We implement CA-diffusion in three-dimensional
space with various kinds of obstacles. When modeling the interaction of a substance with an obstacle, each
block in the basic substitution is associated with a binary type parameter, as a result of which all blocks are
subdivided into two types: internal and boundary. The entered parameter in the result determines the need to
rotate the block when performing basic substitution. Wherein, the boundary of the modeling area can be spec-
ified in the form of planes (plates) and parallelepipeds. It is also possible to simulate the effect of wind on the
admixture at a given angle. The transfer of substances in the absence of obstacles is modeled by a synchro-
nous shift of the cells of the state array with probabilities proportional to the corresponding components of
the wind speed vector [2].
This work was partially supported by the FRBR and Administration of Krasnodar Region (grant 19-41-230005).
References
1. Toffolli T., Margolus N. Cellular Automata Machines. USA: MIT Press, 1987. 279 p.
2. Rubtsov S. E., Pavlova A. V., Savenkov S. I. On the cellular automata model convection-diffusion processes
impurities // Ecological Bulletin of Scientific Centers of BSEC. 2016. No. 2. P. 62�68.
Study of the interaction of a reservoir with an ideal compressible fluid with an elastic half-space
A. V. Pavlova1, S. E. Rubtsov1, I. S. Telyatnikov2
1Kuban State University Krasnodar
2Southern Scientific Centre of RAS
Email: ilux_t@list.ru
DOI 10.24412/cl-35065-2021-1-01-40
We solved in a flat formulation the problem of harmonic oscillations for a basin with an ideal compressible
fluid on an elastic half-space exposed to a localized surface vibration load. The problem was reduced to an in-
tegral equation (IE) of the first kind for the amplitude of the contact hydrodynamic pressure with a kernel that
depends on the difference and the sum of arguments [1]. IE was solved by the factorization method [2].
A semi-analytical method is presented for determining the main parameters of the contact interaction in
hydroelastic systems "liquid-soil" taking into account the effect of natural and man-made vibration loads on
them, which makes it possible to identify the conditions for the occurrence of dynamic modes that are dan-
gerous for construction integrity and to estimate their frequencies range depending on the defining character-
istics of the system.
This work was partially supported by the FRBR (grant 19-08-00145) and SSC of the RAS (project No. 01201354241)
References
1. Pavlova A.V., Rubtsov S.E., Telyatnikov I.S. The study of the dynamic problem of vibrations of a reservoir with
liquid on an elastic foundation // IOP Conference Series: Materials Science and Engineering, 918 (2020) 012126.
DOI:10.1088/1757-899X/918/1/012126.
2. Vorovich I. I., Babeshko V. A. Dynamical Mixed Problems of Elasticity for Nonclassical Domains. M.: Nauka, 1979.
Sensitivity-operator-based inverse modeling framework with heterogeneous measurements
A. V. Penenko
Institute of Computational Mathematics and Mathematical Geophysics SB RAS
Novosibirsk State University
Email: aleks@ommgp.sscc.ru
DOI 10.24412/cl-35065-2021-1-01-41
Air quality monitoring systems vary in temporal and spatial coverage, the composition of the observed
chemicals, and the data's accuracy. The developed inverse modeling approach [1] is based on sensitivity oper-
