Methodology bottom-up for estimation of the Air Emissions Inventory and carbon footprint for tugboats

Abstract

In October 2008, the Marine Environment Protection Committee (MEPC) adopted the Annex VI of the
revised regulation MARPOL which entered into force in July 2010. Several revisions were made, inter
alia, to the rules on Ozone-depleting substances, which is expected to produce a significant benefit for
the environment and human health, especially for people living in port cities and coastal communities.
At present, the sensitivity of the citizens regarding the emissions originated in the port areas are increasing,
perhaps because the most important commercial ports are placed within densely populated
cities.
In this context, it is presented in this work about the methodology proposed for the estimation of
the emissions inventory for tugboats by analysing their activity. For this purpose, it will be calculated
the fuel consumption of each tugboat, including the main engine and the auxiliary engines and then,
convert that consumption into atmospheric emissions.
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