[pam-users] Paul et al, npj Climate and Atmospheric Science, 2025

[pam-users]

Paul, Andreas, Kokkola, Tuukka, Fang, Zheng, Ihalainen, Mika, Czech, Hendryk, Etzien, Uwe, Hohaus, Thorsten, Sippula, Olli, Rudich, Yinon, Buchholz, Bert, Kiendler-Scharr, Astrid, Zimmerman, Ralf, The impact of photochemical aging on secondary aerosol formation from a marine engine, npj Climate and Atmospheric Science, 106, 8, 1, https://doi.org/10.1038/s41612-025-00985-2, 2025.

Abstract. Ship traffic is known as an important contributor to air pollution. Regulations aimed at reducing sulfur oxide pollution by limiting the fuel sulfur content (FSC) may also decrease primary particulate matter (PM) emitted from ships. However, there is a knowledge gap regarding how the FSC affects secondary aerosol formation. The emissions from a research ship engine operated with either low sulfur heavy fuel oil (LS-HFO) (FSC = 0.5%) or marine gas oil (MGO) (FSC = 0.01%), were photochemically processed in the oxidation flow reactor “PEAR” to achieve an equivalent photochemical age between 0 and 9 days in the atmosphere. FSC was found to have no significant impact on secondary organic aerosol formation after 3 days of aging, at 1.7 ± 0.4 g/kg for MGO and 1.5 ± 0.4 g/kg for LS-HFO. Furthermore, the composition and oxidative pathways remained similar regardless of FSC. However, because of the higher secondary SO4 formation and primary aerosol emissions, LS-HFO had significantly higher total PM than MGO.

PAM Wiki - Publications Using Other Oxidation Flow Reactors<https://sites.google.com/site/pamwiki/publications-using-other-oxidation-flow-reactors>

Andrew Lambe
Principal Scientist
Aerodyne Research, Inc.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.aerodyne.com/pipermail/aerodyne-pam-users/attachments/20250317/ebcfb702/attachment.htm>