IMO Begins Updating Ship GHG Information

Press Release
Monday, February 25, 2013
Port Scene: Photo credit IMO

International experts are meeting at IMO Headquarters with the aim of providing current & reliable ship Green House Gas emission information.

This information would be used by IMO , through its Marine Environment Protection Committee (MEPC), to base its work on further measures to reduce GHG.

The Second IMO GHG Study 2009 estimated that international shipping emitted 870 million tonnes, or about 2.7% of the global man-made emissions of CO2 in 2007. An updated GHG inventory is considered necessary as the current estimate contained in the Second study does not take account of the economic downturn experienced globally since 2008. 

Exhaust gases are the primary source of GHG emissions from ships, with carbon dioxide the most important GHG, both in terms of quantity and of global warming potential. An updated inventory would also provide a baseline to enable the impact to be assessed of technical and operational energy efficiency measures for international shipping that entered into force on 1 January 2013.

The MEPC, at its sixty-fourth session in October 2012 endorsed, in principle, the outline for an update of the GHG emissions estimate. The Expert Workshop, meeting from 26 February to  1 March 2013, will further consider the methodology and assumptions to be used in the update. The Expert Workshop is expected to provide a summary of its deliberations as a report on its work to MEPC 65, meeting in May this year.

In addition to carbon dioxide (CO2), a global GHG inventory of emissions of GHGs and relevant substances emitted from ships, engaged in international transport could include: methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulphur hexafluoride (SF6), subject to data availability.
Other relevant substances that may contribute to climate change include: nitrogen oxides (NOx), non-methane volatile organic compounds (NMVOC), carbon monoxide (CO), particulate matter (PM) and sulphur oxides (SOx).

 


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