An Examination of NOx, SO2, and CO Emissions from East Texas Power Plants

HR: 1340h
AN: A23C-1474 [Abstracts]
TI: An Examination of NOx, SO2, and CO Emissions from East Texas Power Plants
AU: * Peischl, J
EM: jeff.peischl@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: * Peischl, J
EM: jeff.peischl@noaa.gov
AF: NOAA, Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway, Boulder, CO 80305, United States
AU: Ryerson, T B
EM: thomas.b.ryerson@noaa.gov
AF: NOAA, Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway, Boulder, CO 80305, United States
AU: Holloway, J S
EM: john.s.holloway@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: Holloway, J S
EM: john.s.holloway@noaa.gov
AF: NOAA, Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway, Boulder, CO 80305, United States
AU: Aikin, K C
EM: kenneth.c.aikin@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: Aikin, K C
EM: kenneth.c.aikin@noaa.gov
AF: NOAA, Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway, Boulder, CO 80305, United States
AU: Frost, G J
EM: gregory.j.frost@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: Frost, G J
EM: gregory.j.frost@noaa.gov
AF: NOAA, Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway, Boulder, CO 80305, United States
AU: Fehsenfeld, F C
EM: fred.c.fehsenfeld@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: Fehsenfeld, F C
EM: fred.c.fehsenfeld@noaa.gov
AF: NOAA, Earth System Research Laboratory, Chemical Sciences Division, 325 Broadway, Boulder, CO 80305, United States
AB: Emissions from several East Texas power plants were measured from aircraft during the 2000 and 2006 Texas Air Quality Studies. One-second measurements were made of NO_y, SO₂, CO, and CO₂ during these flights. NO_y (total reactive nitrogen) is used as a proxy for power plant NO_x (NO + NO₂) emissions to account for any reactions that may have occurred between emission and measurement. Emission ratios of NO_y, SO₂, and CO to CO₂ were calculated from the closest down-wind transects of plumes from seven power plants. Emission ratios were also calculated with hourly data from the Continuous Emission Monitoring System (CEMS). The aircraft data show substantial (25-80 percent) reductions in NO_x emissions from four of the power plants between 2000 and 2006, whereas SO₂ and CO emissions from all plants appear to be largely unchanged during this time. Emission ratios calculated from the aircraft and from hourly CEMS data in 2006 agree to within an average of approximately 10 percent, which suggests the CEMS data are a fair representation of power plant emissions.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0322 Constituent sources and sinks
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