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Chemical and physical processes controlling the distribution of aerosols in the Lower Fraser Valley, Canada, during the Pacific 2001 field campaign

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(Microsoft Word - Spatial variation of airborne pollutants concentrations in\205) 1 Spatial variation of airborne pollutant concentrations in Brisbane, Australia and its potential impact on population exposure assessment L. Morawska1, D. Vishvakarman2, K. Mengersen3, S. Thomas1 1 Centre for Medical, Health and Environmental Physics, Queensland University of Technology, PO Box 2434 Brisbane, QLD 4001 Australia 2 School of Industrial Ecology and Built Environment, Faculty of Engineering and Physical Systems, Central Queensland University, Rockhampton, Australia. 3 School of Mathematical and Physical Sciences, The University of Newcastle, University Drive, Callaghan, NSW, Australia Published as: ��� ����� ��� ��� � ��� ������� ��� ������ ���� ��� ����� �� �������� �� ���� �� �� �� ��� � �������� � ����� ��� ��� ��� � �� ����� ���� ����� ���� ���� � �������� ������� �� � ������ �� ��� �� �� ���������������� �������������������������� �!������"##"�� ABSTRACT Spread of air pollution sources and non-uniform mixing conditions in urban or regional air sheds often result in spatial variation of pollutant concentrations over different parts of the air sheds. A comprehensive understanding of this variation of concentrations is imperative for informed planning, monitoring and assessment in a range of critical areas including assessment of monitoring network efficiency or assessment of population exposure variation as a function of the location in the city. The aims of this work were to study the city-wide variability of pollutants as measured by "urban background" type monitoring stations and to interpret the results in relation to the applicability of the data to population exposure assessments and the network efficiency. A comparison between ambient concentrations of NOx, ozone and PM10 was made for three stations in the Brisbane air shed network. The best correlated between the three stations were ozone concentrations followed by NOx con

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