HR: 1340h
AN: A23C-1477 [Abstracts]
TI: Small marine craft emission factors observed from the NOAA R/V Ronald H. Brown during TexAQS/GoMACCS 2006
AU: * Lerner, B M
EM: brian.lerner@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway
R/CSD7, Boulder, CO 80305,
AU: * Lerner, B M
EM: brian.lerner@noaa.gov
AF: University of Colorado
Cooperative Institute for Research in Environmental Sciences, UCB 216, Boulder, CO 80309-0216,
AU: Lack, D
EM: daniel.lack@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway
R/CSD7, Boulder, CO 80305,
AU: Lack, D
EM: daniel.lack@noaa.gov
AF: University of Colorado
Cooperative Institute for Research in Environmental Sciences, UCB 216, Boulder, CO 80309-0216,
AU: Murphy, P C
EM: paul.c.murphy@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway
R/CSD7, Boulder, CO 80305,
AU: Murphy, P C
EM: paul.c.murphy@noaa.gov
AF: University of Colorado
Cooperative Institute for Research in Environmental Sciences, UCB 216, Boulder, CO 80309-0216,
AU: Williams, E J
EM: eric.j.williams@noaa.gov
AF: NOAA Earth System Research Laboratory, 325 Broadway
R/CSD7, Boulder, CO 80305,
AU: Williams, E J
EM: eric.j.williams@noaa.gov
AF: University of Colorado
Cooperative Institute for Research in Environmental Sciences, UCB 216, Boulder, CO 80309-0216,
AB:
During the TexAQS/GoMACCS 2006 field campaign, the NOAA R/V Ronald H. Brown often encountered small
marine recreational craft and small fishing vessels while sailing close to the Texas coast, especially in Galveston
Bay. 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 distinct exhaust plumes from these sources. Photoacoustic aerosol absorption spectroscopy (PAS)
measurements made concurrently allowed for the first quantification of mass EFs for light-absorbing particles
from fishing craft. As previously observed along the New England coast, gasoline-powered recreational vessels
showed significantly higher NOx/CO2 and lower CO/CO2 EFs than current emissions inventories predict,
although in agreement with the most recent published literature of laboratory studies. These findings imply lower
volatile organic compound emissions from these vessels, although this was not directly measured.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0322 Constituent sources and sinks
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting