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Airborne monitoring of compliance to NOx emission regulations from ocean-going vessels in the Belgian North Sea
Van Roy, W.; Scheldeman, K.; Van Roozendael, B.; Van Nieuwenhove, A.; Schallier, R.; Vigin, L.; Maes, F. (2022). Airborne monitoring of compliance to NOx emission regulations from ocean-going vessels in the Belgian North Sea. Atmospheric Pollution Research 13(9): 101518. https://dx.doi.org/10.1016/j.apr.2022.101518
In: Atmospheric Pollution Research: Buca. ISSN 1309-1042, more
Related to:
Van Roy, W.; Scheldeman, K.; Van Roozendael, B.; Van Nieuwenhove, A.; Schallier, R.; Vigin, L.; Maes, F. (2023). Corrigendum to ‘Airborne monitoring of compliance to NOx emission regulations from ocean-going vessels in the Belgian North Sea’ [Atmos. Pollut. Res. 13 (2022), 101518]. Atmospheric Pollution Research 14(12): 101922. https://dx.doi.org/10.1016/j.apr.2023.101922, more
Peer reviewed article  
Available in  Authors 
Keyword
    Marine/Coastal
Author keywords
    Ship emissions; Air pollution; Airborne surveillance; Maritime policy; Marine environment; Nitrogen dioxide
Authors  Top 
  • Van Roy, W., more
  • Scheldeman, K., more
  • Van Roozendael, B., more
  • Van Nieuwenhove, A., more
Abstract
    Along the worldwide tightening of standards for sulphur emission from ocean going vessels (OGVs) come actions that are also being taken to reduce nitrogen emission. Particularly, as a milestone in this regard, on January 1st, 2021 the NOx Emission Control Area (NECA) for the North Sea and Baltic Sea came into effect. In response to the newly established NECA, the sniffer sensor system on the Belgian coastguard aircraft was modified and extended with a NOx sensor. Moreover, a methodology was developed to evaluate OGV compliance to the NOx emission limits through in situ measurements of the plume exhaust. The quality and uncertainty of the measurements demonstrate that it is likely to achieve an effective compliance monitoring of the NOx emission standards on the sea. Those emission standards are further divided into four tiers depending on the keel laying date. As has been proved by the results, NOx emissions for Tier II OGVs, contrary to what might be expected, are on average higher than those for Tier I OGVs. What is even more problematic, Tier II OGVs have also more often been found to be non-compliant than Tier I OGVs.
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