The results of an analysis of changes in the atmospheric air quality in Moscow during the lockdown period and the decline in business activity caused by the COVID-19 coronavirus pandemic are presented. The observed changes in urban air pollution represent a unique experiment to assess the impact of various anthropogenic influences on the composition of atmospheric air. The influence of weather factors and transport activity on the level of pollution in the spring of 2020 is considered. The level of the main pollutants in the atmosphere decreased by 30–50% during the period of lockdown, and a different type of changes was revealed near highways and in residential areas. This article discusses the possibilities and difficulties of using a “unique experiment” on a sharp decrease in traffic intensity in large cities to determine the contribution of various branches of the urban economy (transport, energy, industry, waste processing) to the total air pollution in large cities.

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COVID-19 封锁对莫斯科空气质量的影响

介绍了对封锁期间莫斯科大气空气质量变化和 COVID-19 冠状病毒大流行导致商业活动下降的分析结果。观察到的城市空气污染变化代表了一项独特的实验，用于评估各种人为影响对大气成分的影响。考虑了天气因素和交通活动对 2020 年春季污染水平的影响。封城期间，大气中主要污染物水平下降了30-50%，高速公路附近和居民区出现了不同类型的变化。