Nighttime atmospheric nucleation driven by marine microorganisms
- 1Université Clermont Auvergne, Laboratoire de Meteorologie Physique, France
- 2GEOMAR, Helmholtz Centre for Ocean Research Kiel, 24105 Kiel, Germany
- 3Aerosol Physics Laboratory, Faculty of Engineering and Natural Sciences, University of Tampere, 33720 Tampere, Finland
- 4National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand
- 5Dept. Marine Sciences, University of Otago, Dunedin, New Zealand
- 6Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Madrid 28006, Spain
- 7National Institute of Water and Atmospheric Research (NIWA), Hamilton, New Zealand
- 8CSIRO Oceans & Atmosphere, Aspendale, Victoria, Australia
- 9Chemistry Department, Molecular Research Unit, University of Helsinki, 00014 Helsinki, Finland
Understanding ocean-cloud interactions and their effect on climate requires that atmospheric new particle formation is characterized. Yet, the process of particle formation from marine biogenic gaz-phase emissions has not been evidenced in the open ocean lower atmosphere, partly due to the naturally low concentrations of these particles in remote oceanic places. Here we show, using new ship-borne air-sea interface enclosures, that new particles are formed in relation to marine micro-biology present in the seawater. The chemical analysis of newly formed clusters with API-ToF-MS shows unexpected results, implicating nucleating coumpounds and pathways that are usually not taken into account in nucleation processes.
How to cite: Chamba, G., Peltola, M., Barthelmeß, T., Rissanen, M., Rose, C., Iyer, S., Saint-Macary, A., Saiz-Lopez, A., Rocco, M., Safi, K., Deppeler, S., Barr, N., Harvey, M., Engel, A., Dunne, E., Law, C., and Sellegri, K.: Nighttime atmospheric nucleation driven by marine microorganisms, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-8058, https://doi.org/10.5194/egusphere-egu23-8058, 2023.
