31 January 2019

Reductions of emissions from international shipping on European Seas bring important benefits

IIASA has completed a study on the potential for cost-effective air emission reductions from international shipping through designation of further Emission Control Areas on the European Seas with a focus on the Mediterranean Sea.

Credit: IMO Collection/flikr.com

Credit: IMO Collection/flikr.com

The study explored the impacts of alternative emission control interventions on relevant air pollutant emissions, examined their consequence on ambient air quality in Europe and the neighbouring regions, and explored the resulting improvements of human health. It estimated the costs of the various policy interventions, and compared them with monetized benefits on human health and other impacts.

As a central tool, the study employed the GAINS (Greenhouse gas – Air Pollution Interactions and Synergies) model, complemented by more detailed computations with MET Norway’s EMEP atmospheric chemistry-transport model (Simpson et al., 2012). Subsequently, EMRC’s ALPHA-RiskPoll model (Holland et al. 2013) provided full benefit analyses. By employing the same methodologies and models that have been used for the Clean Air Outlook of the European Commission, results are directly comparable with the Outlook results..

It is found that further controls of SO₂ emissions, e.g., through SO₂ emission control areas, could deliver rather fast benefits, and avoid by 2030 up to 4000 cases of premature deaths annually, and 8000 in 2050. In the longer run, by 2050, application of additional NOx control measures could double the health benefits. Even when using the lower (most conservative) health valuation, all reduction measures examined in the report emerged as cost-effective, with monetized benefits exceeding emission control costs typically by a factor of 6 in 2030 and by a factor of 12 in 2050.

Designation of the Mediterranean Sea as an Emission Control Area could by 2030 cut emissions of SO2 and NOx from international shipping by 80 and 20 percent, respectively, compared to current legislation. These additional emission reductions could avoid 4,100 cases of premature deaths in 2030 and more than 10,000 annual premature deaths in 2050. Even with the most conservative assumptions for health valuation, monetized benefits are on average more than four times higher than the costs in 2030 and nearly eight times higher in 2050.

Financial support for the study was provided by the European Commission, DG Environment. Results of the study will assist the Commission in its activities and negotiations within the International Maritime Organization (IMO) on further reductions of emissions from maritime transport on European Seas. They have been presented at the Regional Marine Pollution Emergency Response Centre for the Mediterranean Sea (REMPEC) meeting in December 2018 and will be subject of discussion at the European Maritime Safety Agency (EMSA) meeting in February 2019 as well as at the IMO MEPC 74th session in May 2019.


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Last edited: 04 February 2019

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Janusz Cofala

Senior Research Scholar

Air Quality and Greenhouse Gases

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International Institute for Applied Systems Analysis (IIASA)
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