1. GEMMA and POLARIS Centre, Università degli Studi di Milano-Bicocca, 20126 Milano, Italy
2. Institute of Oceanology, Polish Academy of Sciences, 81-712 Sopot, Poland
3. Department of Environmental Science, Stockholm University, 10691 Stockholm, Sweden
4. Bolin Centre for Climate Research, Stockholm University, 10691 Stockholm, Sweden
5. Aerosol d.o.o., Kamniška 39A, SI-1000 Ljubljana, Slovenia
6. Center for Atmospheric Research, University of Nova Gorica, SI-5000 Nova Gorica, Slovenia
7. Condensed Matter Physics Department, J. Stefan Institute, 1000 Ljubljana, Slovenia
8. Department of Environmental Sciences, Computer Science and Statistics, University of Ca’ Foscari, 30172 Venezia Mestre, Italy