Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/9770
Title: Radon as an atmospheric tracer in urban environments
Authors: Williams, AG
Chambers, SD
Griffiths, AD
Crawford, J
Conen, F
Reimann, S
Hill, M
Keywords: Radon
Tracer techniques
Air pollution
Switzerland
Air pollution monitoring
Benzene
Carbon dioxide
Issue Date: 16-Nov-2016
Publisher: Bureau of Meteorology and CSIRO Oceans and Atmosphere, Climate Science Centre, Melbourne
Citation: Williams, A. G., Chambers, S. D. Griffiths, A. D., Crawford, J., Conen, F., Reimann, S., & Hill, M. (2016). Radon as an atmospheric tracer in urban environments. Paper presented at the Atmospheric Composition & Chemistry Observations & Modelling Conference incorporating the Cape Grim Annual Science Meeting 2016 [abstracts], 16‐18 November 2016, Stanley, Tasmania.
Abstract: We demonstrate the multiple uses of radon as a tracer to explain observed diurnal characteristics of air pollution levels in a small inland European city (Bern, Switzerland), and to separate the influences of: local emissions within the city area; vertical dilution by boundary layer mixing; and horizontal advection of cleaner air from outside the city. This is accomplished by: (i) characterising the temporal variability in traffic density, radon, benzene and CO emissions at Bern city centre on diurnal and seasonal timescales; (ii) adapting a radon‐based stability technique developed by Chambers et al. (2015) to make it independent of seasonal changes in day length and radon source function; (iii) characterising the combined influence of traffic density and meteorological conditions on benzene and CO concentrations in Bern; and (iv) utilising the diurnal radon signal, together with an idealised box model incorporating a simple advection term, to remove the combined effects of local horizontal advection and atmospheric dilution. This allows us to seek an accurate relationship between traffic density and pollutant emissions in this compact inland city. © 2016 The Authors
URI: https://apo.ansto.gov.au/dspace/handle/10238/9770
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