Marseille-Longchamp Supersite: A Cutting-Edge Air Quality Research Platform

Born from a close collaboration between AtmoSud and LCE, the Marseille-Longchamp supersite is located at the IMERA (Institute for Advanced Studies of Aix-Marseille University) in the heart of Parc Longchamp. This urban background site is representative of the air breathed by Marseille’s residents.

The Marseille-Longchamp supersite investigates a comprehensive set of non-regulated parameters to better understand fine particle pollution phenomena, precisely quantify particle sources, and ultimately refine dose-effect relationships of particulate matter on human health.

Instrumentation

In addition to the necessary instrumentation for measuring all regulated parameters (PM10, PM2.5, NOx, O3, SO2) and key greenhouse gases (CO2, CH4), the supersite is continuously equipped with:

  • ToF-ACSM (Time-of-Flight Aerosol Chemical Speciation Monitor) for real-time (15-minute resolution) analysis of the non-refractory fraction of submicron particles (i.e., Organic Aerosol -OA-, Sulfate, Nitrate, Ammonium, etc.) (since February 2017).
  • Aethalometer (AE33) for Black Carbon (BC) measurement (15-minute resolution).
  • Online elemental analyzer (Xact 625i, 60-minute resolution) for metal elements (since July 2018).
  • SMPS (Scanning Mobility Particle Sizer) for total submicron particle number measurement (15-700 nm) and size distribution (5-minute resolution) (since September 2018).
  • Meteorological station (temperature, relative humidity, 3D sonic anemometer).

A Scientific and Societal Tool

The Marseille-Longchamp supersite serves as a high-level scientific platform, a source of information, a decision-making aid, and a tool for assessing public policy effectiveness (both short- and long-term). It aims to become a hub for national and international scientific projects as well as higher education (Master’s level and beyond).

With the Marseille-Longchamp site, the city gains a unique and unifying tool addressing a major scientific and societal issue. It establishes direct links between cutting-edge research, public authorities, and the general public.

Results are available on HERMES: www.hermes-aq.com.

Contacts

LCE

 

Contacts atmosud

 

 References

  • Chazeau, B., Temime-Roussel, B., Gille, G., Mesbah, B., D'Anna, B., Wortham, H., and Marchand, N.: Measurement report: Fourteen months of real-time characterisation of the submicronic aerosol and its atmospheric dynamics at the Marseille–Longchamp supersite, Atmos. Chem. Phys., 21, 7293–7319, https://doi.org/10.5194/acp-21-7293-2021, 2021.
  • Chazeau, B., El Haddad, I., Canonaco, F., Temime-Roussel, B., D’Anna, B., Gille, G., Mesbah, B., Prévôt, A. S. H., Wortham, H. and Marchand, N.: Organic aerosol source apportionment by using rolling positive matrix factorization: Application to a Mediterranean coastal city, Atmos. Environ. X, 14, 100176, doi:10.1016/J.AEAOA.2022.100176, 2022.
  • Chen, G., Canonaco, F., Tobler, A., Aas, W., Alastuey, A., Allan, J., Atabakhsh, S., Aurela, M., Baltensperger, U., Bougiatioti, A., De Brito, J. F., Ceburnis, D., Chazeau, B., Chebaicheb, H., Daellenbach, K. R., Ehn, M., El Haddad, I., Eleftheriadis, K., Favez, O., Flentje, H., Font, A., Fossum, K., Freney, E., Gini, M., Green, D. C., Heikkinen, L., Herrmann, H., Kalogridis, A.-C., Keernik, H., Lhotka, R., Lin, C., Lunder, C., Maasikmets, M., Manousakas, M. I., Marchand, N., Marin, C., Marmureanu, L., Mihalopoulos, N., Močnik, G., Nęcki, J., O’Dowd, C., Ovadnevaite, J., Peter, T., Petit, J.-E., Pikridas, M., Matthew Platt, S., Pokorná, P., Poulain, L., Priestman, M., Riffault, V., Rinaldi, M., Różański, K., Schwarz, J., Sciare, J., Simon, L., Skiba, A., Slowik, J. G., Sosedova, Y., Stavroulas, I., Styszko, K., Teinemaa, E., Timonen, H., Tremper, A., Vasilescu, J., Via, M., Vodička, P., Wiedensohler, A., Zografou, O., Cruz Minguillón, M. and Prévôt, A. S. H.: European Aerosol Phenomenology - 8: Harmonised Source Apportionment of Organic Aerosol using 22 Year-long ACSM/AMS Datasets, Environ. Int., 107325, doi:10.1016/J.ENVINT.2022.107325, 2022.
  • Trechera, P., Garcia-Marlès, M., Liu, X., Reche, C., Pérez, N., Savadkoohi, M., Beddows, D., Salma, I., Vörösmarty, M., Casans, A., Casquero-Vera, J A., Hueglin, C., Marchand, N., Chazeau, B., Gille, G., Kalkavouras, P., Mihalopoulos, N., Ondracek, J., Zíková, N., Niemi, J V.., Manninen, H E., Green, D C., Tremper, A H., Norman, M., Vratolis, S., Eleftheriadis, K., Gómez-Moreno, F J., Alonso-Blanco, E., Gerwig, H., Wiedensohler, A., Weinhold, K., Merkel, M., Bastian, S., Petit, J-E., Favez, O.,Crumeyrolle, S., Ferlay, N, Dos Santos, S M., Putaud, J-P., Timonen, H., Lampilahti, J., Asbach, C., Wolf, C.,  Kaminski, H., Altug, H. Hoffmann, B., Rich, D Q., Pandolfi, M., Harrison, R M., Hopke, P K., Petäjä, T., Alastuey, A., and Querol, X., Phenomenology of Ultrafine Particle Concentrations and Size Distribution Across Urban Europe, Environment International, 172,  https://doi.org/10.1016/j.envint.2023.107744, 2023.

 

 

Team members