Evaluation of vessel emissions in a lagoon area with ground based Multi axis DOAS measurements

Premuda, Margherita; Masieri, Samuele; Bortoli, Daniele; Kostadinov, I.; Petritoli, A.; Giovanelli, G.

doi:10.1016/j.atmosenv.2011.05.067

Cited by 16 publications

(9 citation statements)

References 28 publications

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“…For example, Berg et al (2012) performed airborne (from airplane and helicopter) DOAS measurements of NO 2 and SO 2 in ship plumes by measuring sea-scattered light. Masieri et al (2009) and Premuda et al (2011) Prata (2014) showed that a UV (SO 2 ) imaging camera can be used to measure SO 2 in ship plumes at the Kongsfjord at Ny Ålesund, Svalbard, and the harbor of Rotterdam. The global pathways of the ships can be seen in long timeaveraged NO 2 measurements from various satellite instruments: from GOME over the Indian Ocean (Beirle et al, 2004), from SCIAMACHY onboard ENVISAT over the Indian Ocean and the Red Sea (Richter et al, 2004), and in even more detail with many more visible ship tracks from GOME-2 onboard Metop-A (Richter et al, 2011).…”

Section: Doas Measurements Of Shipping Emissionsprevious Studiesmentioning

confidence: 99%

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

et al. 2017

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Abstract. A 3-year time series of ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of NO2 and SO2 on the island Neuwerk has been analyzed for contributions from shipping emissions. The island is located in the German Bight, close to the main shipping lane (at a distance of 6–7 km) into the river Elbe towards the harbor of Hamburg. Measurements of individual ship plumes as well as of background pollution are possible from this location. A simple approach using the column amounts of the oxygen molecule dimer or collision complex, O4, for the determination of the horizontal light path length has been applied to retrieve path-averaged volume mixing ratios. An excellent agreement between mixing ratios determined from NO2 retrievals in the UV and visible parts of the spectrum has been found, showing the validity of the approach. Obtained mixing ratios of NO2 and SO2 are compared to co-located in situ measurements showing good correlation on average but also a systematic underestimation by the MAX-DOAS O4 scaling approach. Comparing data before and after the introduction of stricter fuel sulfur content limits (from 1 to 0.1 %) on 1 January 2015 in the North Sea Emission Control Area (ECA), a significant reduction in SO2 levels is observed. For situations with wind from the open North Sea, where ships are the only local source of air pollution, the average mixing ratio of SO2 decreased by a factor of 8, while for NO2 in the whole time series from 2013 to 2016, no significant change in emissions was observed. More than 2000 individual ship emission plumes have been identified in the data and analyzed for the emission ratio of SO2 to NO2, yielding an average ratio of 0.3 for the years 2013/2014 and decreasing significantly, presumably due to lower fuel sulfur content, in 2015/2016. By sorting measurements according to the prevailing wind direction and selecting two angular reference sectors representative for wind from the open North Sea and coast excluding data with mixed air mass origin, relative contributions of ships and land-based sources to air pollution levels in the German Bight have been estimated to be around 40 % : 60 % for NO2 as well as SO2 in 2013/2014, dropping to 14 % : 86 % for SO2 in 2015/2016.

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Section: Doas Measurements Of Shipping Emissionsprevious Studiesmentioning

confidence: 99%

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

et al. 2017

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“…In addition, MAX-DOAS has been successfully employed for monitoring shipping emissions directly. Premuda et al (2011) used the ground-based MAX-DOAS measurements to evaluate the NO2 and SO2 levels in ship plume discharged from the single ship in the Giudecca Strait of the Venetian Lagoon. Seyler et al (2017) have utilized MAX-DOAS to perform long-term measurements of NO2 and SO2 from shipping emissions in the German Bight, and evaluated the reduction in SO2 levels after implement stricter sulfur limits in shipping fuel.…”

Section: Doas Technique Allows To Identify and Quantify The Absorptiomentioning

confidence: 99%

Surveillance of SO2 and NO2 from ship emissions by MAX-DOAS measurements and implication to compliance of fuel sulfur content

Cheng

Wang

Zhu

et al. 2019

Preprint

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Abstract. With the increased concerns on the shipping emitted air pollutants, the feasible technology for the surveillance is in high demand. Here we presented the shore-based Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements of emitted SO2 and NO2 from ships under different traffic conditions in China's ship emission control area (ECA) of Shanghai and Shenzhen, China. These three typical measurement sites are used to represent emission scenarios of ship docked at berth, navigation in the inland waterway and inbound/outbound in the deep water port. With 2-dimensional scanning, the observation shows that the hotspots of SO2 and NO2 can be quickly and easily located from multiple berth. Although the MAX-DOAS measurements can not distinguish the single ship plume in the busy shipping lanes of inland waterway area, it certificates that the variations of SO2 and NO2 levels are mainly impacted by the ship traffic density and atmospheric dispersion conditions. In the open water area with low density of vessels, the MAX-DOAS measurements can capture the pulse signal of ship emitted SO2 and NO2 very well, and characterize the peaks altitude and insistent duration of the individual ship plumes. Combined with the ship information of activity data, rated power of engine and fuel sulfur content, it was found that SO2&#8201;/&#8201;NO2 ratio in single plume is usually low (<&#8201;1.5) for inbound vessel due to the usage of auxiliary engine with less power and clean fuel of low sulfur content. Meanwhile, the unexpected high SO2&#8201;/&#8201;NO2 ratio implies the fuel usage with sulfur content exceeding limit of regulations. Therefore, the observed SO2&#8201;/&#8201;NO2 ratio in the plume of single ship can be used as the index for the compliance of fuel sulfur content, and then tag the suspicious ship for further enforcement. Combined the ship emission estimated by actual operation parameters and logical sulfur content, the shore-based MAX-DOAS measurement will provide the fast and more accurate way for the surveillance of ship emissions.

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“…For example Berg et al (2012) performed airborne (from airplane and helicopter) DOAS measurements of NO 2 and SO 2 in ship plumes by measuring sea scattered light. Masieri et al (2009) and Premuda et al (2011) Prata (2014) showed that a UV (SO 2 ) imaging camera can be used to measure SO 2 in ship plumes at the Kongsfjord at NyÅlesund, Svalbard and the harbor of Rotterdam.…”

Section: Doas Measurements Of Shipping Emissions -Previous Studiesmentioning

confidence: 99%

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

Seyler

Wittrock

Kattner

et al. 2017

Preprint

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Evaluation of vessel emissions in a lagoon area with ground based Multi axis DOAS measurements

Cited by 16 publications

References 28 publications

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

Surveillance of SO<sub>2</sub> and NO<sub>2</sub> from ship emissions by MAX-DOAS measurements and implication to compliance of fuel sulfur content

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

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Evaluation of vessel emissions in a lagoon area with ground based Multi axis DOAS measurements

Cited by 16 publications

References 28 publications

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

Surveillance of SO&lt;sub&gt;2&lt;/sub&gt; and NO&lt;sub&gt;2&lt;/sub&gt; from ship emissions by MAX-DOAS measurements and implication to compliance of fuel sulfur content

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements

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Surveillance of SO<sub>2</sub> and NO<sub>2</sub> from ship emissions by MAX-DOAS measurements and implication to compliance of fuel sulfur content