TY - JOUR
T1 - Pollutant transport during a regional o3 episode in the mid-atlantic states
AU - Ryan, William F.
AU - Doddridge, Bruce G.
AU - Dickerson, Russell R.
AU - Morales, Raymond M.
AU - Hallock, Kristen A.
AU - Roberts, Paul T.
AU - Blumenthal, Donald L.
AU - Anderson, Jerry A.
AU - Civerolo, Kevin L.
N1 - Funding Information:
Aircraft and radiosonde observations were funded by the Maryland Department of the Environment, Air and Radiation Management Administration. Many members of the Air Chemistry Group at UM participated in these observations, including Willnetta Ball, Shobha Kondragunta, Kevin Rhoads, Chad Palmer, Fernando Rodriguez, Robert Gersten, and Ed King. Observations at SNP were made by Kristen Hallock under a cooperative agreement with the National Park Service and with the assistance of John Ray, Shane Spitzer, and Julie Thomas (CA-400059041). Observations at the Wye Research and Education Center were made by Kevin Civerolo as part of the AEROCE program funded by the National Science Foundation (NSF-ATM9421079). Support for the Wye observations was also provided by the National Oceanic and Atmospheric Administration, Air Resources Laboratory through the Cooperative Institute for Climate Studies. Funding for NARSTO-NE related work was provided by the Electric Power Research Institute (EPRI, WO-910810). The assistance of Dr. Roland Draxler in the use of the HY-SPLIT model and of the Wye Education and Research Center is also appreciated.
PY - 1998/9
Y1 - 1998/9
N2 - Ozone (O3) concentrations in the Baltimore-Washington (B-W) metropolitan area frequently exceed the National Ambient Air Quality Standard (NAAQS) in the summer months. The most extreme O3 events occur in multi-day high O3 episodes.1 These events can be regional in scale, with O3 concentrations exceeding the NAAQS at numerous locations along the eastern U.S. seaboard, and are typically associated with slow-moving or stagnant high pressure systems.2-5 In the B-W region, the most extreme events typically occur with surface high pressure overhead or just west of the region and an upper air high-pressure area (ridge) to the west or northwest.1 Besides providing conditions conducive to local O3 production (Subsidence and strong low-level inversions, weak horizontal winds, little cloud cover), this weather pattern may also result in transport of O3 and its precursors from heavily industrialized areas west and north of the B-W region. In this paper, observations and back trajectories made during the severe regional O3 event of July 12-15, 1995, are used to confirm the hypothesis that significant regional-scale transport of O3 and its precursors occur during extreme O3 events of the standard type in the B-W area.
AB - Ozone (O3) concentrations in the Baltimore-Washington (B-W) metropolitan area frequently exceed the National Ambient Air Quality Standard (NAAQS) in the summer months. The most extreme O3 events occur in multi-day high O3 episodes.1 These events can be regional in scale, with O3 concentrations exceeding the NAAQS at numerous locations along the eastern U.S. seaboard, and are typically associated with slow-moving or stagnant high pressure systems.2-5 In the B-W region, the most extreme events typically occur with surface high pressure overhead or just west of the region and an upper air high-pressure area (ridge) to the west or northwest.1 Besides providing conditions conducive to local O3 production (Subsidence and strong low-level inversions, weak horizontal winds, little cloud cover), this weather pattern may also result in transport of O3 and its precursors from heavily industrialized areas west and north of the B-W region. In this paper, observations and back trajectories made during the severe regional O3 event of July 12-15, 1995, are used to confirm the hypothesis that significant regional-scale transport of O3 and its precursors occur during extreme O3 events of the standard type in the B-W area.
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U2 - 10.1080/10473289.1998.10463737
DO - 10.1080/10473289.1998.10463737
M3 - Article
C2 - 9775759
AN - SCOPUS:0032168840
SN - 1047-3289
VL - 48
SP - 786
EP - 797
JO - Journal of the Air and Waste Management Association
JF - Journal of the Air and Waste Management Association
IS - 9
ER -