cc-by-4.0Kulmala, Markku2025-04-292023-11-282023-11-28https://datakatalogi.helsinki.fi/handle/123456789/5620This dataset supplements the manuscript "Heatwave reveals potential for enhanced aerosol formation in Siberian boreal forest", Environmental Research Letters, 2023. boreal forestaerosol particlesmolecular clustersdataset