- Dataset for Measurement report: Ion clusters as indicator for local new particle formation(2023-06-20) Santeri Tuovinen; Janne Lampilahti; Veli-Matti Kerminen; Markku Kulmala; INAR - Institute for Atmospheric and Earth System Research, University of Helsinki - Santeri Tuovinen; INAR - Institute for Atmospheric and Earth System Research, University of Helsinki - Janne Lampilahti; INAR - Institute for Atmospheric and Earth System Research, University of Helsinki - Veli-Matti Kerminen; INAR - Institute for Atmospheric and Earth System Research, University of Helsinki - Markku Kulmala