OZONE PRODUCTION IN THE PHILADELPHIA URBAN AREA DURING NE-OPS 99.

Conference · Mon Oct 01 04:00:00 EDT 2001

OSTI ID:789488

KLEINMAN, L I ^[1]; DAUM, P H; BRECHTEL, F; LEE, Y N; NUNNERMACKER, L J; SPRINGSTON, S R; WEINSTEIN-LLOYD, J

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1. BROOKHAVEN NATIONAL LABORATORY

As part of the 1999 NARSTO Northeast Oxidant and Particulate Study (NE-OPS) field campaign, the DOE G-1 aircraft sampled trace gases and aerosols in and around the Philadelphia metropolitan area. Twenty research flights were conducted between July 25 and August 11. The overall goals of these flights were to obtain a mechanistic understanding of O{sub 3} production; to characterize the spatial and temporal behavior of photo-oxidants and aerosols; and to study the evolution of aerosol size distributions, including the process of new particle formation. Within the NE-OPS program, other groups provided additional trace gas, aerosol, and meteorological observations using aircraft, balloon, remote sensing, and surface based instruments (Phillbrick et al., 2000). In this article we provide an overview of the G-1 observations related to O{sub 3} production, focusing on the vertical distribution of pollutants. Ozone production rates are calculated using a box model that is constrained by observed trace gas concentrations. Highest O{sub 3} concentrations were observed on July 31, which we present as a case study. On that day, O{sub 3} concentrations above the 1-hour 120 ppb standard were observed downwind of Philadelphia and also in the plume of a single industrial facility located on the Delaware River south of the city.

• Research Organization: Brookhaven National Lab., Upton, NY (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 789488
• Report Number(s): BNL--68706; KP1202010; KP1202010
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIRCRAFT
BOX MODELS
DELAWARE RIVER
OXIDIZERS
OZONE
PRODUCTION
REMOTE SENSING
URBAN AREAS