Journal
ASIAN JOURNAL OF ATMOSPHERIC ENVIRONMENT
Volume 16, Issue 3, Pages -Publisher
SPRINGERNATURE
DOI: 10.5572/ajae.2022.052
Keywords
Fuel sulfur content; MARPOL Annex VI; SO2; Sniffing method; Kanmon Straits
Categories
Funding
- study on Global Limit for Marine Fuels Sulphur to better Air Quality (GLIMMS-AQ)
- Environment Research and Technology Development Fund
- [JPMEERF20185002]
Ask authors/readers for more resources
This study compared data before and after the introduction of the new global limit on sulfur content in ship fuel and found a significant reduction in ship emissions of SO2. The results of the study indicate that the 2020 global limit led to much greater reductions in SO2 emissions from ships than expected.
The global limit on the sulfur content of ship fuel was reduced from 3.50% to 0.50% in January 2020 to reduce ship emissions of SO2 and particulate matter. We conducted observational campaigns before and after the new global limit was intro-duced to detect changes in coastal air quality. We measured ambient concentrations of SO2 and CO2 ship plumes on shore with the sniffing method under the Kanmon Bridge over the Kanmon Straits between Honshu and Kyusyu Islands, Japan, for several weeks in August to September in 2019 and 2020. The fuel sulfur content (FSC) estimated from our measurements mainly varied from 0.50% to 3.00% in 2019, whereas the range narrowed to 0.10% to 0.40% in 2020, showing that all the ships complied. The mean FSC in 2020 was reduced to 16% of that in 2019, which was consistent with the reduction in the ambient SO2 concentration. Sakurai et al. (2021) estimated that after the 2020 global limit was brought in, SO2 emissions from ships were reduced to 24% of their previous values by assuming that all ships have a FSC of 0.50%. Our results indicate the 2020 global limit led to much greater reductions in SO2 emissions from ships than expected.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available