CalNex-LA
Aerosol samplers at CalTech
Scope of project
Los Angeles is still famous for its photochemical smog although the pollution levels have decreased a lot since the 70s. Within the CalNex campaign, PSI contributes to the assessment of the sources of particulate matter. A HiVol sampler was run at 3-4 hours time resolution with subsequent 14C analyses to assess the contribution of fossil and non-fossil carbon to the aerosols in Pasadena. The samples of the rotating drum impactor (2-hourly resolution) are further analyzed with synchrotron x-ray fluoresence analyzing the elemental composition of elements larger than magnesium. In a new setup, we also plan to measure sodium on these samples.Field campaign
| Dates | 15 May - 16 June 2010 |
| Location | Campus of the California Institute of Technology (Caltech), Pasadena, California |
| Instruments (PSI) | 1 RDI (Rotating Drum Impactor), 1 HiVol Sampler |
Publications
Journal Articles
Light-absorbing soluble organic aerosol in Los Angeles and Atlanta: A contrast in secondary organic aerosol.Zhang, X., Y.-H. Lin, J. D. Surratt, P. Zotter, A. S. H. Prévôt, and R. J. Weber, 2011
Geophys. Res. Lett., 38, L21810.
Conference Contributions
High time-resolution elemental composition of particulate matter in Pasadena.Visser, S., M. Furger, and A.S.H. Prévôt, 2011.
CalNex Data Analysis Workshop, Sacramento, California, USA, 16-19 May 2011.
Diurnal cycle of fossil and non-fossil total carbon using 14C analyses during CalNex
Zotter, P., Prévôt, A. S. H., Zhang, Y. L., Szidat, S., Zhang, X., Lin, Y.-H., Hayes, P., Schnelle-Kreis, J., Seibert, G., Zimmermann, R., Surratt, J. D., Jimenez, J. L., Weber, R. and Baltensperger, U., 2011
CalNex Data Analysis Workshop, Sacramento, California, USA, 16-19 May 2011.
Diurnal cycle of fossil and non-fossil total carbon using 14C analyses during CalNex
Zotter, P., Zhang, Y. L., Hayes, P., Zhang, X., Lin, Y.-H., Szidat, S., Surratt, J. D., Weber, R., Jimenez, J. L., Baltensperger, U. and Prévôt, A. S. H, 2011
European Aerosol Conference, Manchester, UK, 4-9 September 2011