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Atmosphere 2018, 9(12), 500;

Urban Air Quality in a Coastal City: Wollongong during the MUMBA Campaign

Centre for Atmospheric Chemistry, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia
CSIRO Climate Science Centre, Oceans and Atmosphere, Aspendale, Victoria 3195, Australia
Atmospheric Chemistry Observations & Modeling Laboratory, National Center for Atmospheric Chemistry, Boulder, CO 80301, USA
ANSTO Institute for Environmental Research, New Illawarra Rd, Lucas Heights, NSW 2234, Australia
Author to whom correspondence should be addressed.
Received: 26 November 2018 / Revised: 11 December 2018 / Accepted: 12 December 2018 / Published: 17 December 2018
(This article belongs to the Special Issue Air Quality in New South Wales, Australia)
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We present findings from the Measurements of Urban, Marine and Biogenic Air (MUMBA) campaign, which took place in the coastal city of Wollongong in New South Wales, Australia. We focus on a few key air quality indicators, along with a comparison to regional scale chemical transport model predictions at a spatial resolution of 1 km by 1 km. We find that the CSIRO chemical transport model provides accurate simulations of ozone concentrations at most times, but underestimates the ozone enhancements that occur during extreme temperature events. The model also meets previously published performance standards for fine particulate matter less than 2.5 microns in diameter (PM2.5), and the larger aerosol fraction (PM10). We explore the observed composition of the atmosphere within this urban air-shed during the MUMBA campaign and discuss the different influences on air quality in the city. Our findings suggest that further improvements to our ability to simulate air quality in this coastal city can be made through more accurate anthropogenic and biogenic emissions inventories and better understanding of the impact of extreme temperatures on air quality. The challenges in modelling air quality within the urban air-shed of Wollongong, including difficulties in accurate simulation of the local meteorology, are likely to be replicated in many other coastal cities in the Southern Hemisphere. View Full-Text
Keywords: air quality; traffic pollution; industrial emissions; modelling air quality; traffic pollution; industrial emissions; modelling

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Paton-Walsh, C.; Guérette, É.-A.; Emmerson, K.; Cope, M.; Kubistin, D.; Humphries, R.; Wilson, S.; Buchholz, R.; Jones, N.B.; Griffith, D.W.T.; Dominick, D.; Galbally, I.; Keywood, M.; Lawson, S.; Harnwell, J.; Ward, J.; Griffiths, A.; Chambers, S. Urban Air Quality in a Coastal City: Wollongong during the MUMBA Campaign. Atmosphere 2018, 9, 500.

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