The use of environmental decision support systems for modeling of atmospheric pollution following the chemical accidents

Authors

DOI:

https://doi.org/10.20535/SRIT.2308-8893.2022.3.04

Keywords:

atmospheric dispersion, RODOS system, hazardous substances, ammonia, LASAT, DIPCOT, “Povіtrya” system

Abstract

We studied the possibility of the combined application of screening models to assess the characteristics of sources in accidents at storage facilities for hazardous substances with complex models of atmospheric transport as part of modern decision support systems to calculate air pollution in a wide range of spatial and temporal scales. The evaporation time following an emergency spill, estimated by screening models, is used to set the emission intensity and calculate the atmospheric transport by the RODOS nuclear emergency response system. For the accident in Chernihiv on March 23, 2022, it was estimated that the maximum permissible concentration of ammonia 0.2 mg/m3 was exceeded at distances up to 75 km from the source. The dependence of the calculated maximum concentrations on time is close to asymptote cmax ~ t-4.5 up to 15 h after emission, which is consistent with the asymptote σ ~ t3/2 for the time dependence of the sizes of puffs following turbulent dispersion of instantaneous releases.

Author Biographies

Ivan Kovalets, The Institute of Mathematical Machines and Systems Problems of the National Academy of Sciences of Ukraine, Kyiv

Senior researcher, Doctor of Technical Sciences, the head of the Environmental Science Department of the Institute of Mathematical Machines and Systems Problems of the National Academy of Sciences of Ukraine, Kyiv, Ukraine.

Scientific interests: environmental modelling, atmospheric dispersion, environmental decision support systems.

Viacheslav Bespalov, The Institute of Mathematical Machines and Systems Problems of the National Academy of Sciences of Ukraine, Kyiv

Researcher at the Environmental Science Department of the Institute of Mathematical Machines and Systems Problems of the National Academy of Sciences of Ukraine, Kyiv, Ukraine.

Scientific interests: geographic-information systems, forecasting of consequences of environmental accidents.

Svitlana Maistrenko, The Institute of Mathematical Machines and Systems Problems of the National Academy of Sciences of Ukraine, Kyiv

Ph.D., a senior researcher at the Environmental Science Department of the Institute of Mathematical Machines and Systems Problems of the National Academy of Sciences of Ukraine, Kyiv, Ukraine.

Scientific interests: information technologies, geoinformation systems.

Oleg Udovenko, Ukrainian Centre for Water and Ecology Issues, Kyiv

Senior researcher at Ukrainian Centre for Water and Ecology Issues, Kyiv, Ukraine.

Research interests: geodata analysis, environmental modelling, hydrological models.

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Published

2022-10-30

Issue

No. 3 (2022)

Section

Decision making and control in economic, technical, ecological and social systems

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