cc-by-4.0Kulmala, Markku2025-04-292021-04-012021-04-01https://datakatalogi.helsinki.fi/handle/123456789/5718This dataset contains the following data Finland (Hyytiälä, HTL): - NAIS data (SMEAR II station and Zeppelin) - Zeppelin LDA data (meteorological data and location) - Zeppelin SMPS data - Mixed layer height (2013-05-08) - API-ToF (pseudo SA) data from Zeppelin Italy (San Pietro Capofiume, SPC): - NAIS data (SPC and Zeppelin) - Zeppelin LDA data (meteorological data and location) - Zeppelin SMPS data - Meteorology, SO2, SMPS and APS data from SPC - Mixed layer height from lidar - API-ToF (pseudo SA) data from Zeppelin - HYSPLIT airmass backtrajectories (2012-06-30)Planetary boundary layerAerosolsNew particle formationdataset