Abstract
During 2003–2004, SUPARCO, the Pakistan Space and Upper Atmosphere Research Commission has conducted a year long baseline air quality study in country’s major urban areas (Karachi, Lahore, Quetta, Rawalpindi, Islamabad and Peshawar). The objective of this study was to establish baseline levels and behavior of airborne pollutants in urban centers with temporal and spatial parameters. This study reveals that the highest concentrations of CO were observed at Quetta (14 ppm) while other pollutants like SO2 (52.5 ppb), NO x (60.75 ppb) and O3 (50 ppb) were higher at Lahore compared to other urban centers like Karachi, Peshawar etc. The maximum particulate (TSP) and PM10 levels were observed at Lahore (996 ug/m3 and 368 ug/m3 respectively), Quetta (778 ug/m3, 298 ug/m3) and in Karachi (410 ug/m3, 302 ug/m3). In all major cities the highest levels were recorded at major intersections and variations were directly correlated with traffic density. These pollutants showed highest levels in summer and spring while lowest were observed in winter and monsoon. A data bank has been generated for future planning and air pollution impact studies.
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Ghauri, B., Lodhi, A. & Mansha, M. Development of baseline (air quality) data in Pakistan. Environ Monit Assess 127, 237–252 (2007). https://doi.org/10.1007/s10661-006-9276-8
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DOI: https://doi.org/10.1007/s10661-006-9276-8