Study examines formation of new aerosol particles in upper residual layer of the atmosphere

The study was based on measurements made in northern boreal forest environment. Researchers examined the formation of new microparticles developing in the morning hours above the mixed boundary layer of the atmosphere, called the upper residual layer.

The results suggest that about 42% of the formation phenomena of new aerosol particles occurs in the upper parts of the upper boundary layer of the atmosphere. Thus these particles are a significant part of the aerosol load of the boundary layer in the boreal forest environment.

More information:

Janne Lampilahti, University of Helsinki, INAR, janne.lampilahti@helsinki.fi

Lampilahti, J., Leino, K., Manninen, A., Poutanen, P., Franck, A., Peltola, M., Hietala, P., Beck, L., Dada, L., Quéléver, L., Öhrnberg, R., Zhou, Y., Ekblom, M., Vakkari, V., Zilitinkevich, S., Kerminen, V.-M., Petäjä, T., and Kulmala, M.: Aerosol particle formation in the upper residual layer, Atmos. Chem. Phys., 21, 7901–7915, https://doi.org/10.5194/acp-21-7901-2021, 2021.

Scientific article available here

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