Black carbon in spring aerosols of Moscow urban background
| Autor: | Elena Volpert, Marina Chichaeva, N. Sitnikov, Sara Padoan, Olga Popovicheva |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Pollutant
Pollution Geography (General) 010504 meteorology & atmospheric sciences media_common.quotation_subject Geography Planning and Development megacity 010501 environmental sciences Environmental Science (miscellaneous) Particulates black carbon Atmospheric sciences air quality 01 natural sciences Wind speed Aerosol pollution G1-922 Environmental science Air quality index Air mass 0105 earth and related environmental sciences media_common Morning |
| Zdroj: | Geography, Environment, Sustainability, Vol 13, Iss 1, Pp 233-243 (2020) |
| ISSN: | 2542-1565 2071-9388 |
| DOI: | 10.24057/2071-9388-2019-90 |
| Popis: | Air quality in megacities is recognized as the most important environmental problem. Aerosol pollution by combustion emissions is remaining to be uncertain. Measurements of particulate black carbon (BC) were conducted at the urban background site of Meteorological Observatory (MO) MSU during the spring period of 2017 and 2018. BC mass concentrations ranged from 0.1 to 10 μg m–3, on average 1.5±1.3 and 1.1±0.9 µg/m3 , in 2017 and 2018, respectively. Mean BC concentrations displayed significant diurnal variations with poorly prominent morning peak and minimum at day time. BC mass concentrations are higher at night time due the shallow boundary layer and intensive diesel traffic which results in trapping of pollutants. Wind speed and direction are found to be important meteorological factors affected BC concentrations. BC pollution rose identifies the North as the direction of the preferable pollution. A negative correlation between BC concentrations and wind speed confirms the pollution accumulation preferably in stable weather days. Relation of BC pollution to a number of agriculture fires is distinguishable by air mass transportation from South and South-Est of Russia and Western Europe. Mean season ВС concentrations at rural and remote sites in different world locations are discussed. |
| Databáze: | OpenAIRE |
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