Articles | Volume 19, issue 15
Atmos. Chem. Phys., 19, 10129–10160, 2019
https://doi.org/10.5194/acp-19-10129-2019
Atmos. Chem. Phys., 19, 10129–10160, 2019
https://doi.org/10.5194/acp-19-10129-2019

Research article 12 Aug 2019

Research article | 12 Aug 2019

Transport of Po Valley aerosol pollution to the northwestern Alps – Part 2: Long-term impact on air quality

Henri Diémoz et al.

Data sets

ARPA Valle d'Aosta: Air quality data ARPA Valle d'Aosta http://www.arpa.vda.it/it/aria/la-qualità-dell-aria/stazioni-di-monitoraggio/inquinanti-export-dati

Centro Funzionale: weather data Centro Funzionale http://cf.regione.vda.it/richiesta_dati.php

ALC data E-PROFILE http://data.ceda.ac.uk/badc/eprofile/data/

Sun-sky radiometer data EuroSkyRad http://www.euroskyrad.net/index.html

Air quality data Regione Piemonte http://www.regione.piemonte.it/ambiente/aria/rilev/ariaday/ariaweb-new/index.php/it/home

Short summary
In a companion paper, we investigated airmass exchanges from the Po plain to the Alps through detailed case studies. Here (part 2) we use 3 years of multi-sensor observations and models to quantify the long-term impact of transport on air quality (>25% on PM10) and aerosol physico-chemical characteristics. We quantify the frequency of occurrence (up to 70% of days) in relation to meteorology (wind flows). We also show how the experimental results can improve air-quality forecasting capabilities.
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Final-revised paper
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