Airborne emission measurements of SO2 , NOx and particles from individual ships using a sniffer technique
Open Access
- 3 July 2014
- journal article
- Published by Copernicus GmbH in Atmospheric Chemistry and Physics
- Vol. 7 (7), 1957-1968
- https://doi.org/10.5194/amt-7-1957-2014
Abstract
A dedicated system for airborne ship emission measurements of SO2, NOx and particles has been developed and used from several small aircraft. The system has been adapted for fast response measurements at 1 Hz, and the use of several of the instruments is unique. The uncertainty of the given data is about 20% for SO2 and 24% for NOx emission factors. The mean values with one standard deviation for multiple measurements of 158 ships measured from the air on the Baltic and North Sea during 2011 and 2012 show emission factors of 18.8 ± 6.5 g kg−1 fuel , 66.6 ± 23.4 g kg−1 fuel and 1.8 ± 1.3 1016 particles kg−1 fuel for SO2, NOx and particle number, respectively. The particle size distributions were measured for particle diameters between 15 and 560 nm. The mean sizes of the particles are between 45 and 54 nm dependent on the distance to the source, and the number size distribution is monomodal. Concerning the sulfur fuel content, around 85% of the monitored ships comply with the International Maritime Organization (IMO) limits. The reduction of the sulfur emission control area (SECA) limit from 1.5 to 1% in 2010 appears to have contributed to reduction of sulfur emissions that were measured in earlier studies from 2007 to 2009. The presented method can be implemented for regular ship compliance monitoring.Keywords
This publication has 27 references indexed in Scilit:
- Field test of available methods to measure remotely SO2 and NOx emissions from shipsPublished by Copernicus GmbH ,2013
- Measurements of air pollution emission factors for marine transportation in SECAAtmospheric Chemistry and Physics, 2013
- Ship emissions of SO2 and NO2: DOAS measurements from airborne platformsAtmospheric Chemistry and Physics, 2012
- Extension of an assessment model of ship traffic exhaust emissions for particulate matter and carbon monoxideAtmospheric Chemistry and Physics, 2012
- Impact of Fuel Quality Regulation and Speed Reductions on Shipping Emissions: Implications for Climate and Air QualityEnvironmental Science & Technology, 2011
- Size-resolved particle emission factors for individual shipsGeophysical Research Letters, 2011
- A modelling system for the exhaust emissions of marine traffic and its application in the Baltic Sea areaAtmospheric Chemistry and Physics, 2009
- In-use gaseous and particulate matter emissions from a modern ocean going container vesselAtmospheric Environment, 2008
- An investigation of the chemistry of ship emission plumes during ITCT 2002Published by American Geophysical Union (AGU) ,2005
- Exhaust emissions from ships at berthAtmospheric Environment, 2003