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Dubna, situated in the Moskovskaya Oblast’ of Russia at coordinates 56.7364, 37.1625, occupies a unique geographical position approximately 120km north of Moscow. The city is strategically located on the banks of the Volga River and the Shosha River confluence, a feature profoundly influencing local climate and potential pollutant dispersion. The terrain is generally flat, characteristic of the East European Plain, with a modest elevation that doesn’t significantly impede air circulation. Dubna’s urban character is a blend of planned Soviet-era architecture and more recent developments, reflecting its history as a science city established in 1949. Surrounding Dubna is a landscape transitioning from urban to rural, with agricultural lands to the west and north, and forested areas extending eastward. This gradient impacts air quality; agricultural practices can contribute to particulate matter from soil disturbance and fertilizer use, while forests offer some natural filtration. The proximity to Moscow and its associated industrial belts introduces the potential for long-range pollutant transport. The Volga River, while a vital resource, can also act as a conduit for pollutant dispersal depending on current and weather patterns. The city’s location within a continental climate zone dictates distinct seasonal variations in air quality, influenced by temperature, precipitation, and wind direction.

Dubna experiences a pronounced seasonal air quality narrative dictated by its continental climate. Winter (December-February) typically sees the poorest air quality, driven by temperature inversions trapping pollutants from heating systems and vehicle emissions near the ground. Reduced sunlight hours also limit the natural breakdown of pollutants. Snow cover reflects radiation, exacerbating the inversion effect. Spring (March-May) brings a gradual improvement as temperatures rise and precipitation washes away accumulated pollutants, though thawing ground can release dust. Summer (June-August) generally offers the cleanest air, with prevailing winds aiding dispersion and increased vegetation absorbing pollutants. However, periods of stagnant air and heatwaves can lead to localised ozone formation. Autumn (September-November) is a transitional period, with decreasing temperatures and increased heating demand leading to a gradual decline in air quality. Fog, common in autumn, can trap pollutants, reducing visibility and increasing respiratory irritation. Sensitive groups – children, the elderly, and those with respiratory conditions – should limit strenuous outdoor activity during winter inversions and periods of high pollen counts in spring/summer. Monitoring wind direction is crucial; pollutants from Moscow can impact Dubna with southerly winds.