IMO to update GHG inventory

26 Feb 2013
The Second IMO GHG Study 2009 estimated that international shipping emitted 870 million tonnes of global man-made CO2 in 2007

The Second IMO GHG Study 2009 estimated that international shipping emitted 870 million tonnes of global man-made CO2 in 2007

International experts are meeting at International Maritime Organisation (IMO) headquarters this week to begin work on updating the inventory of greenhouse gases (GHG) from international shipping.

The Expert Workshop, which will take place from 26 February to 1 March 2013, will consider the methodology and assumptions to be used in the update.

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. The updated inventory is deemed necessary as the current estimated contained in the Second Study does not take account of the global economic downturn experienced since 2008.

The IMO hopes that, through its Marine Environment Protection Committee (MPEC), the reliable and up-to-date information will be used as a base for further measures to reduce GHG.

In addition to carbon dioxide a global GHG inventory of emission and relevant substances emitted from ships engaged in international transport could include methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulphur hexafluoride.

Other relevant substances that may contribute to climate change include nitrogen oxides, non-methane volatile organic compounds, carbon monoxide, particulate matter and sulphur oxides.

The update will add to the IMO’s already adopted technical and operational measures to reduce emissions – the Energy Efficiency Design Index (EEDI) and the Ship Energy Efficiency Management Plan (SEEMP) – which entered into force on 1 January 2013.

The Expert Workshop is expected to provide a summary of its deliberations to MEPC 65, meeting in May this year.

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