Effect of fuel on the hygroscopicity of particles emitted from 1.6MW marine engine

Niina Kuittinen, Fanni Mylläri, Panu Karjalainen, Pauli Pekka Simonen, Päivi Aakko-Saksa, Hilkka Timonen, Topi Rönkkö

    Research output: Contribution to conferenceConference AbstractScientificpeer-review


    Particles originated from ship exhaust aerosol can increase the concentration of cloud condensation nuclei over heavily trafficked shipping lanes, possibly affecting marine stratocumulus clouds and enabling the formation of ship track clouds. The reduction of sulphur in marine fuels has been estimated to decrease the direct and indirect cooling effects of particles originated from ship engines. In this study, the effect of fuel on the tendency of ship engine exhaust particles to grow by water intake was studied by applying hygroscopic tandem differential mobility analyser (HTDMA). The measurements were conducted with medium-speed testbed engine burning four different fuels. The measured growth factors were between 1-1.25 after exposing the aerosol to relative humidity of 80%. Fuel type affected the hygroscopic growth factors and larger growth factor were observed for the fuels with higher sulphur content.
    Original languageEnglish
    Number of pages1
    Publication statusPublished - 31 Aug 2020
    MoE publication typeNot Eligible
    EventEuropean Aerosol Conference, EAC 2020 - Virtual, Aachen, Germany
    Duration: 30 Aug 20204 Sept 2020
    https://phaidra.univie.ac.at/open/o:1164483 (Program & Abstracts)


    ConferenceEuropean Aerosol Conference, EAC 2020
    Internet address


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