气候变化领域集成服务门户(CCPortal): Columnar optical characteristics and radiative properties of aerosols of the AERONET site in Minsk, Belarus

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DOI	10.1016/j.atmosenv.2021.118237
	Columnar optical characteristics and radiative properties of aerosols of the AERONET site in Minsk, Belarus
	Filonchyk M.; Peterson M.; Yan H.; Yang S.; Chaikovsky A.
发表日期	2021
ISSN	1352-2310
卷号	249
英文摘要	This study investigates columnar optical, microphysical and radiative properties of aerosols retrieved from the ground-based Aerosol Robotic Network (AERONET) station located in Minsk, Belarus. Mean values of aerosol optical depth (AOD), a measure of the amount of incoming light that aerosols prevent from reaching the surface, at a wavelength of 440 nm (AOD440) and Ångström exponent at 440–870 (AE440-870) between April 2002 and December 2019 were 0.22 ± 0.17 and 1.42 ± 0.29. A gradual decline of AOD440 by −0.009 and increase of AE440-870 by +0.0009 per year was noted. Seasonal change of AOD440 (AE440-870) demonstrates the highest values are in spring to summer and the lowest values are in winter for both indices. The data showed that the atmosphere over Minsk is under impact of various aerosol types with dominance of Continental Clean (СС) (52.21%), Mixed (MX) (24.30%) and Biomass burning/Urban-industrial (BUI) (20.54%) aerosol types, accounting for 97.05% of all aerosols. Aerosol volume size distribution (VSD), that defines the volume of all aerosol particles in the vertical atmosphere column, demonstrates a bimodal structure with clearly identified fine and coarse particles centered within a radius of 0.11–0.19 μm and 3.86–5.06 μm. Analysis of Asymmetry (ASY) parameter, Single scattering albedo (SSA), and Real and Imaginary Refractive Index (RRI and IRI) indicate the predominance of coarse-mode particles in autumn and winter; and fine-mode particles in spring and summer. The averaged aerosol direct radiative forcing (ARF) showed a cooling effect at the surface (SRF) and a significant warming in the atmosphere (ATM). The atmospheric heating rates varied from 0.40 ± 0.21 K day−1 (autumn) to 0.64 ± 0.38 K day−1 (winter). The results indicate definite changes in the aerosol optical, physical properties and types over Minsk during the study period. © 2021 Elsevier Ltd
关键词	AERONET AOD Heating rate Minsk Radiative forcing SSA
语种	英语
scopus关键词	Atmospheric radiation; Particle size analysis; Refractive index; Aerosol direct radiative forcing; Aerosol optical depths; Aerosol robotic network stations; Atmospheric heating rate; Coarse mode particles; Optical characteristics; Radiative properties; Single scattering albedo; Aerosols; AERONET; aerosol; albedo; heating; optical depth; optical property; radiative forcing; scattering; seasonal variation; size distribution; aerosol; atmosphere; autumn; Belarus; biomass; cooling; light; optical depth; optics; particle size; physical chemistry; priority journal; radiation; radiative forcing; refraction index; Review; seasonal variation; spring; summer; surface property; warming; winter; Belarus; Minsk [Belarus]
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248554
作者单位	Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou, 730070, China; Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou, 730070, China; Department of Geography/Geology, University of Nebraska Omaha, Omaha, NE 68182, United States; B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, 220072, Belarus
推荐引用方式 GB/T 7714	Filonchyk M.,Peterson M.,Yan H.,et al. Columnar optical characteristics and radiative properties of aerosols of the AERONET site in Minsk, Belarus[J],2021,249.
APA	Filonchyk M.,Peterson M.,Yan H.,Yang S.,&Chaikovsky A..(2021).Columnar optical characteristics and radiative properties of aerosols of the AERONET site in Minsk, Belarus.ATMOSPHERIC ENVIRONMENT,249.
MLA	Filonchyk M.,et al."Columnar optical characteristics and radiative properties of aerosols of the AERONET site in Minsk, Belarus".ATMOSPHERIC ENVIRONMENT 249(2021).