PM^sub 10^ Dispersion in Adelaide and Its Relationship with Rainfall

The aim of this study is to use a range of statistical tools to assess particulate matter less than 10 [mu]m (PM^sub 10^) in the atmosphere that has been measured daily at five locations in South Australia over a 7-year period. We consider a wind rose model to provide a graphical display of the frequency distribution of wind speed to explore the role of PM^sub 10^ accumulation over time. A generalised least squares technique with a first-order autoregressive model was applied to the realisation of average changes in PM^sub 10^, and these were assessed at the 5 % significance level. This study found the change in variability of PM^sub 10^ concentration over time. The pre-whitened PM^sub 10^ series were considered as realisations of white noise using correlogram plots. Furthermore, a robust regression technique involving wet (>0.5-mm rainfall) and dry properties (