气候变化领域集成服务门户(CCPortal): Columnar and surface urban aerosol in the Moscow megacity according to measurements and simulations with the COSMO-ART model

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DOI	10.5194/acp-22-10443-2022
	Columnar and surface urban aerosol in the Moscow megacity according to measurements and simulations with the COSMO-ART model
	Chubarova, Natalia E.; Vogel, Heike; Androsova, Elizaveta E.; Kirsanov, Alexander A.; Popovicheva, Olga B.; Vogel, Bernhard; Rivin, Gdaliy S.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	10443
结束页码	10466
卷号	22 期号:16 页码:24
英文摘要	Urban aerosol pollution was analyzed over the Moscow megacity region using the COSMO-ART (COSMO - COnsortium for Small-scale MOdelling, ART - Aerosols and Reactive Trace gases) online coupled mesoscale model system and intensive measurement campaigns at the Moscow State University Meteorological Observatory (MSU MO, 55.707 degrees N, 37.522 degrees E) during the April-May period in 2018 and 2019. We analyzed mass concentrations of particulate matter with diameters smaller than 10 mu m (PM10), black carbon (BC) and aerosol gas precursors (NOx, SO2, CHx) as well as columnar aerosol parameters for fine and coarse modes together with different meteorological parameters, including an index characterizing the intensity of particle dispersion (IPD). Both model and experimental datasets have shown a statistically significant linear correlation of BC with NO2 and PM10 mass concentrations, which indicates mostly common sources of emissions of these substances. There was a pronounced increase in the BC/PM10 ratio from 0.7 % to 5.9 %, with the decrease in the IPD index related to the amplification of the atmospheric stratification. We also found an inverse dependence between the BC/PM10 ratio and columnar single-scattering albedo (SSA) for the intense air mixing conditions. This dependence together with the obtained negative correlation between wind speed and BC/PM10 may serve as an indicator of changes in the absorbing properties of the atmosphere due to meteorological factors. On average, the relatively low BC / PM10 ratio (for urban regions) of 4.7 % is the cause of the observed relatively high SSA = 0.94 in Moscow. Using long-term parallel aerosol optical depth (AOD) measurements over the 2006-2020 period at the MSU MO and under upwind clean background conditions at Zvenigorod Scientific Station (ZSS) of the IAP RAS (55.7 degrees N, 36.8 degrees E), we estimated the urban component of AOD (AOD(urb) and some other parameters as the differences at these sites. The annual mean AOD(urb) at 550 nm was about 0.021 with more than 85 % of the fine aerosol mode. The comparisons between AOD(urb) obtained from the model and measurements during this experiment have revealed a similar level of aerosol pollution of about AOD(urb) = 0.015-0.019, which comprised 15 %-19 % of the total AOD at 550 nm. The urban component of PM10 ( PM10(urb)) was about 16 mu g m(-3) according to the measurements and 6 mu g m(-3) according to the COSMO-ART simulations. We obtained a pronounced diurnal cycle of m PM10urb and urban BC (BCurb) as well as their strong correlation with the IPDs. With the IPD index change from 3 to 1 at night, there was about a 4 times increase in PM10urb (up to 30-40 mu g m(-3)) and a 3 times increase in BCurb (up to 3-3.5 mu g m(-3)). At the same time, no pronounced daily cycle was found for the columnar urban aerosol component (AOD(urb)), although there was a slight increase in model AOD(urb) at night.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000840801000001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273882
作者单位	Lomonosov Moscow State University; Helmholtz Association; Karlsruhe Institute of Technology; Lomonosov Moscow State University
推荐引用方式 GB/T 7714	Chubarova, Natalia E.,Vogel, Heike,Androsova, Elizaveta E.,et al. Columnar and surface urban aerosol in the Moscow megacity according to measurements and simulations with the COSMO-ART model[J],2022,22(16):24.
APA	Chubarova, Natalia E..,Vogel, Heike.,Androsova, Elizaveta E..,Kirsanov, Alexander A..,Popovicheva, Olga B..,...&Rivin, Gdaliy S..(2022).Columnar and surface urban aerosol in the Moscow megacity according to measurements and simulations with the COSMO-ART model.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(16),24.
MLA	Chubarova, Natalia E.,et al."Columnar and surface urban aerosol in the Moscow megacity according to measurements and simulations with the COSMO-ART model".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.16(2022):24.