HR: 0830h
AN: A51E-0718    [PDF]
TI: Measurements of Marine Vessel Emissions
AU: * Williams, E J
EM: eric@al.noaa.gov
AF: Aeronomy Laboratory/NOAA, 325 Broadway, Boulder, CO 80305 United States
AU: * Williams, E J
EM: eric@al.noaa.gov
AF: CIRES, University of Colorado, Boulder, CO 80309 United States
AU: Lerner, B M
EM: blerner@al.noaa.gov
AF: Aeronomy Laboratory/NOAA, 325 Broadway, Boulder, CO 80305 United States
AU: Lerner, B M
EM: blerner@al.noaa.gov
AF: CIRES, University of Colorado, Boulder, CO 80309 United States
AU: Middlebrook, A M
EM: amiddlebrook@al.noaa.gov
AF: Aeronomy Laboratory/NOAA, 325 Broadway, Boulder, CO 80305 United States
AB: Nitrogen and sulfur emissions from large marine vessels are a significant source of these species to the atmosphere. One estimate indicates that oxidized nitrogen from this source is at least 14% of all combustion emissions globally (1). More importantly, since approximately 70% of all ship emissions occur within 400 km of land (1) marine vessel emissions are of significance regionally in coastal areas and locally in ports. Marine vessel emissions are calculated from marine fuel usage and various emission factors, where sulfur emission factors depend on the sulfur content of fuel and nitrogen emission factors depend on the vessel engine type: slow-speed diesel, medium-speed diesel, and other (generally steam-turbine). Currently, the best available emission factors come from a Lloyd's Register of Shipping sponsored emissions research program. Measurements were made of emissions from engines during bench tests and from in-service marine vessels directly at the stack. While these results are the best available data, the significance of marine vessel emissions suggests that additional evaluation of emission factors be conducted. During the 2002 New England Air Quality Study (NEAQS 2002) the NOAA research vessel Ronald H. Brown was equipped with trace gas and aerosol monitoring instrumentation for the purpose of investigating the factors that affect air quality in coastal New England. As a part of that study, measurements were made of gaseous and particulate emissions from marine vessels, both in port and underway. This talk will present those results and relate them to current inventory estimates of marine vessel emissions. (1) Corbett, J.J., et al., Global nitrogen and sulfur inventories for oceangoing ships, J. Geophy. Res., 104, 3457-3470, 1999.
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0322 Constituent sources and sinks
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting