Articles | Volume 19, issue 14
https://doi.org/10.5194/acp-19-9309-2019
https://doi.org/10.5194/acp-19-9309-2019
Research article
 | 
19 Jul 2019
Research article |  | 19 Jul 2019

The sensitivity of PM2.5 acidity to meteorological parameters and chemical composition changes: 10-year records from six Canadian monitoring sites

Ye Tao and Jennifer G. Murphy

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Short summary
In this study, we analyzed the 10-year variation of aerosol pH in six Canadian cities and found the variation is largely attributed to the seasonal cycling of ambient temperature. We also found that in different seasons the pH sensitivity to chemical composition is distinctly different. This finding suggests the sensitivity of aerosol pH to chemical composition needs to be carefully examined for any particular region.
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