HR: 15:10h
AN: A13I-07 [Abstracts]
TI: Impact of Emissions from Commercial Shipping During TexAQS 2006
AU: * Williams, E
EM: eric.j.williams@noaa.gov
AF: NOAA, ESRL/CSD
325 Broadway, Boulder, CO 80305, United States
AU: * Williams, E
EM: eric.j.williams@noaa.gov
AF: CIRES, University of Colorado, Boulder, CO 80309, United States
AU: Lerner, B
EM: brian.lerner@noaa.gov
AF: NOAA, ESRL/CSD
325 Broadway, Boulder, CO 80305, United States
AU: Lerner, B
EM: brian.lerner@noaa.gov
AF: CIRES, University of Colorado, Boulder, CO 80309, United States
AU: Murphy, P
EM: paul.c.murphy@noaa.gov
AF: NOAA, ESRL/CSD
325 Broadway, Boulder, CO 80305, United States
AU: Murphy, P
EM: paul.c.murphy@noaa.gov
AF: CIRES, University of Colorado, Boulder, CO 80309, United States
AB:
Commercial marine vessels range in size from small fishing boats (20-30 meters in length) to extremely large
container ships (over 300 meters in length). These ships almost without exception use diesel engines for
propulsion and auxiliary power generation. The larger ships, comprising bulk carriers, tankers and container
carriers, utilize diesel engines that produce power in the 10 MW to 100 MW range. These engines typically
consume heavy fuel oils which are high in sulfur content (1%-4.5% by weight). These engines are also
extremely efficient, converting essentially all of the carbon in the fuel to CO2, but also emitting NOx, CO, SO2,
VOCs, and PM.
During TexAQS 2006 our measurements on board the NOAA research ship Ronald H. Brown allowed us to
characterize the emissions from a large number of commercial marine vessels. The measurements provided
the means to calculate mass-based emission factors for many of the compounds noted above. With the
information broadcast by these vessels over the Automated Information System, we have unequivocally
determined the emission factors for over 200 vessels both at dock and underway. Our data largely confirm
published average emission factors, but also show significant variability especially with NOx. This talk will
present those results and then use the data to show that emissions of NOx and SO2 from these vessels are not
negligible in the Houston-Galveston region.
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting