Transport of Po Valley aerosol pollution to the northwestern Alps – Part 1: Phenomenology

Diémoz, Henri; Barnaba, Francesca; Magri, Tiziana; Pession, Giordano; Dionisi, Davide; Pittavino, Sara; Tombolato, Ivan K. F.; Campanelli, Monica; Della Ceca, Lara Sofia; Hervo, Maxime; Di Liberto, Luca; Ferrero, Luca; Gobbi, Gian Paolo

doi:https://doi.org/10.5194/acp-19-3065-2019

Articles | Volume 19, issue 5

https://doi.org/10.5194/acp-19-3065-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-3065-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 5

Research article

|

11 Mar 2019

Research article |

| 11 Mar 2019

Transport of Po Valley aerosol pollution to the northwestern Alps – Part 1: Phenomenology

Henri Diémoz, Francesca Barnaba, Tiziana Magri, Giordano Pession, Davide Dionisi, Sara Pittavino, Ivan K. F. Tombolato, Monica Campanelli, Lara Sofia Della Ceca, Maxime Hervo, Luca Di Liberto, Luca Ferrero, and Gian Paolo Gobbi

Supplement

https://doi.org/10.5194/acp-19-3065-2019-supplement

Data sets

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

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

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

Video supplement

4-D CTM simulation of aerosol advections from the Po basin to the northwestern Alps H. Diémoz https://doi.org/10.5446/38391

Short summary

We assess the impact of air masses transported from the Po basin on the particulate matter (PM) levels in the northwestern Alps using multi-sensor observations from ground and space, and models. In this part 1 of the study, we investigate the phenomenon through three selected case studies representative of different seasons. We show that advected aerosols remarkably degrade the air quality of the Alpine area (PM₁₀ increasing up to >100 µg m⁻³) and we discuss the measurement–model discrepancies.