Identification of Long-Range Transport Pathways and Potential Source Regions of PM2.5 and PM10 at Akedala Station, Central Asia
作者： Hanlin Li , Qing He , Xinchun Liu
关键词: Effects of high altitude on humans 、 Range (biology) 、 China 、 Air pollution 、 Physical geography 、 Air mass 、 Atmosphere 、 Central asia 、 Environmental science 、 Particulate pollution
摘要: Cluster analyses, potential source contribution function (PSCF) and concentration-weight trajectory (CWT) were used to identify the main transport pathways regions with hourly PM2.5 PM10 concentrations in different seasons from January 2017 December 2019 at Akedala Station, located northwest China (Central Asia). The annual mean of 11.63 ± 9.31 19.99 14.39 µg/m3, respectively. air pollution was most polluted winter, dominant part (between 54 76%) constituted aerosols Akedala. Particulate can be traced back eastern Kazakhstan, northern Xinjiang, western Mongolia. cluster analyses showed that atmosphere mainly affected by masses transported northwest. came central which are characterized highly industrialized semi-arid desert areas. In addition, pressure profile back-trajectories mass distribution distributed above 840 hPa. This indicates strongly high altitude masses. According results PSCF CWT methods, areas very similar those PM10. winter autumn, weighted values These contributed highest 25 40 µg/m3 30 60 these seasons. spring summer, border between northeast southern Russia. 10 20
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