Variation of CCN and potential CDNC in the eastern Mediterranean
Authors/Creators
- 1. University of Crete, Chemistry Department
- 2. National Observatory of Athens, Institute for Environmental research and Sustainable Development
- 3. CSTACC, ICE-HT, FORTH, EPFL
- 4. University of Crete, Chemistry Department, CSTACC/ICE-HT/FORTH
Description
This peer reviewed conference proceeding paper by Neroladaki et al has been orally presented at the COMECAP 2021 Conference in Greece.
This study investigates the aerosol-CCN-cloud droplet link at the Finokalia atmospheric observatory from February to December 2014. A comprehensive dataset of the observed submicron aerosol size distribution, chemical composition and derived CCN concentrations is being processed with a state-of-the-art droplet parameterization to calculate the potential cloud droplet number concentration (CDNC) and maximum cloud supersaturation. Bulk hygroscopicity is calculated from the mixture of salts predicted by ISORROPIA-II thermodynamic model using the observed particle composition. The calculated CCN overestimate the available observations by 5-20% for most supersaturations between 0.2 and 1.0%. This error propagates to CDNC predictions. Both calculated CCN and CDNC maximize in summer, when the maximum supersaturation needed for cloud droplet to form is minimum.