Muhammad Nabeel Khan, Salman Tariq, Nimra Ehsan, Tunjeena Haseeb
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Classification of aerosol types in mega-city of Lahore (Pakistan) using ground-based remote sensing
This study was aimed at classifying the aerosol types and assessing their temporal distribution in the atmosphere of Lahore. For this purpose, we utilized the particle linear depolarization ratio (PLDR) and single scattering albedo (SSA) from Aerosol Robotic Network (AERONET) version 3 inversion products. Datasets from AERONET stationed at Lahore were computed to obtain results. Based on the dust ratio (Rd) (obtained from SSA and PLDR) aerosols were classified into pure dust (PD), pollution aerosols: non-absorbing (NA), weakly absorbing (WA), moderately absorbing (MA), and strongly absorbing (SA) aerosols, and mixtures: pollution-dominated mixture (PDM), and dust dominated-mixture (DDM). The highest aerosol density was in regions with higher angstrom exponent (AE) values. The atmosphere of Lahore is dominated by 65% pollution aerosols (29% PDM and 34% pollution aerosols). DDM (dust-dominated mixtures) prevails mostly in the summer and spring seasons, while PD or DDM is observed in very low quantities in the cold season (only in pre- and post-winter season months). The winter season months are highly polluted with 80% pure pollution aerosol dominance. Mostly low PLDR values are observed in the atmosphere of Lahore indicating dominance by pollution aerosols associated with anthropogenic pollution sources.
期刊介绍：
Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health.
It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes.
International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals.
Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements.
This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.
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