An important development during the sixty-seventh
session of MEPC was the approval of the third IMO
GHG study 2014 (IMO, 2014a). The study provides
updates to earlier estimates for GHG emissions
from ships contained in the second IMO GHG
study (2009). The third IMO GHG study estimates
that international shipping emitted 796 million tons
of CO2 in 2012, compared to 885 million tons in
2007. This represented 2.2 per cent of the global
emissions of CO2 in 2012, compared to 2.8 per cent
in 2007