HR: 0800h
AN: A51E-0131 [Abstracts]
TI: Small Marine Craft Emission Factors Observed From the R/V Ronald H. Brown During NEAQS 2002 and
NEAQS-ITCT 2004
AU: * Lerner, B M
EM: brian.lerner@noaa.gov
AF: NOAA Aeronomy Lab, 325 Broadway, R/AL7, Boulder, CO 80305
AU: * Lerner, B M
EM: brian.lerner@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder
216 UCB, Boulder, CO 80309-0216
AU: Williams, E J
EM: eric.j.williams@noaa.gov
AF: NOAA Aeronomy Lab, 325 Broadway, R/AL7, Boulder, CO 80305
AU: Williams, E J
EM: eric.j.williams@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder
216 UCB, Boulder, CO 80309-0216
AU: Murphy, P C
EM: paul.c.mruphy@noaa.gov
AF: NOAA Aeronomy Lab, 325 Broadway, R/AL7, Boulder, CO 80305
AU: Murphy, P C
EM: paul.c.mruphy@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder
216 UCB, Boulder, CO 80309-0216
AB:
During the NEAQS 2002 and NEAQS-ITCT 2004 field campaigns, the NOAA R/V Ronald H. Brown (RHB) often encountered small marine
recreational craft while sailing close to the New England coast. Measurement of a suite of trace gases at high time
resolution (1 Hz) allowed us to calculate emission factors (EFs), relative to carbon dioxide, for nitrogen oxides (NOx),
sulfur dioxide (SO2) and carbon monoxide (CO) for more than 60 distinct plumes from these vessels. Gasoline-powered craft
showed significantly higher NOx/CO2 and lower CO/CO2 EFs than current emissions inventories predict, although in agreement
with the most recent published literature. These findings imply lower volatile organic compound emissions from these
vessels, although this was not directly measured. Diesel-powered craft NOx/CO2 EFs scatter about the expected ratio, while
CO/CO2 factors are slightly high.
DE: 0322 Constituent sources and sinks
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005