Towards a concentration closure of sub-6 nm aerosol particles and sub-3 nm atmospheric clusters

Markku Kulmala, Dominik Stolzenburg (Corresponding author), Lubna Dada, Runlong Cai, Jenni Kontkanen, Chao Yan, Juha Kangasluoma, Lauri R. Ahonen, Loic Gonzalez-Carracedo, Juha Sulo, Santeri Tuovinen, Chenjuan Deng, Yiran Li, Katrianne Lehtipalo, Kari E. J. Lehtinen, Tuukka Petäjä, Paul M. Winkler, Jingkun Jiang, Veli-Matti Kerminen