Impact of fuel sulfur regulations on carbonaceous particle emission from a marine engine

IF 8.5 1区地球科学 Q1 METEOROLOGY & ATMOSPHERIC SCIENCES npj Climate and Atmospheric Science Pub Date : 2024-11-22 DOI:10.1038/s41612-024-00838-4

Martin Bauer, Hendryk Czech, Lukas Anders, Johannes Passig, Uwe Etzien, Jan Bendl, Thorsten Streibel, Thomas W. Adam, Bert Buchholz, Ralf Zimmermann

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Abstract

Ship traffic substantially contributes to air pollution, thus affecting climate and human health. Recently introduced regulations by the International Maritime Organization (IMO) on the fuel sulfur content (FSC) caused a shift in marine fuel onsumption from heavy fuel oils (HFO) to diesel-like distillate fuels, but also to alternative hybrid fuels and the operation of sulfur scrubbers. Using multi-wavelength thermal-optical carbon analysis (MW-TOCA), our study provides emission factors (EF) of carbonaceous aerosol particles and link the fuel composition to features observed in the soot microstructure, which may be exploited in online monitoring by single-particle mass spectrometry (SPMS). Particulate matter from distillate fuels absorbs stronger light of the visible UV and near-infrared range than HFO. However, Simple Forcing Efficiency (SFE) of absorption weighted by EF of total carbon compensated the effect, leading to a net reduction by >50% when changing form HFO to distillate fuels.

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燃料硫含量法规对船用发动机碳质颗粒排放的影响

船舶交通严重加剧了空气污染，从而影响气候和人类健康。国际海事组织（IMO）最近出台了关于燃料硫含量（FSC）的规定，导致船舶燃料消费从重油（HFO）转向柴油类馏分燃料，同时也转向替代性混合燃料和硫洗涤器的运行。通过使用多波长热光学碳分析（MW-TOCA），我们的研究提供了碳质气溶胶颗粒的排放因子（EF），并将燃料成分与烟尘微观结构中观察到的特征联系起来，这些特征可在单颗粒质谱仪（SPMS）在线监测中加以利用。与氢氟烯烃相比，来自馏分燃料的颗粒物质吸收更强的可见紫外线和近红外光。然而，以总碳的 EF 加权的吸收简单强迫效率（SFE）弥补了这一影响，当从氢氟烯烃燃料转变为馏分燃料时，吸收简单强迫效率净减少了 50%。

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来源期刊

npj Climate and Atmospheric Science Earth and Planetary Sciences-Atmospheric Science

CiteScore

8.80

自引率

3.30%

发文量

审稿时长

21 weeks

期刊介绍： npj Climate and Atmospheric Science is an open-access journal encompassing the relevant physical, chemical, and biological aspects of atmospheric and climate science. The journal places particular emphasis on regional studies that unveil new insights into specific localities, including examinations of local atmospheric composition, such as aerosols. The range of topics covered by the journal includes climate dynamics, climate variability, weather and climate prediction, climate change, ocean dynamics, weather extremes, air pollution, atmospheric chemistry (including aerosols), the hydrological cycle, and atmosphere–ocean and atmosphere–land interactions. The journal welcomes studies employing a diverse array of methods, including numerical and statistical modeling, the development and application of in situ observational techniques, remote sensing, and the development or evaluation of new reanalyses.