News 13.4.2022

Fine particle emissions from diesel fuel do not significantly promote the formation of ice crystals in mixed clouds

Researchers of the Finnish Meteorological Institute took part in a study in which a measurement campaign was used for studying the emissions of fossil-based diesel fuel and two components of biodiesel.
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Two different post-treatment systems for emissions were used in the tests and photochemical treatment was used to age some of the samples. The results confirm previously published research, according to which fine particle emissions of diesel fuel are ineffective ice cores in freezing conditions that typically occur in mixed clouds.

Further information:

Mika Komppula, Finnish Meteorological Institute,

Kimmo Korhonen, University of Eastern Finland,

Scientific article is available on Atmospheric Chemistry and Physics.

Korhonen, K., Kristensen, T. B., Falk, J., Malmborg, V. B., Eriksson, A., Gren, L., Novakovic, M., Shamun, S., Karjalainen, P., Markkula, L., Pagels, J., Svenningsson, B., Tunér, M., Komppula, M., Laaksonen, A., and Virtanen, A.: Particle emissions from a modern heavy-duty diesel engine as ice nuclei in immersion freezing mode: a laboratory study on fossil and renewable fuels, Atmos. Chem. Phys., 22, 1615–1631,, 2022.