1998 Progress Report: Investigations of Factors Determining the Occurrence of Ozone and Fine Particles in Northeastern USAEPA Grant Number: R826373
Title: Investigations of Factors Determining the Occurrence of Ozone and Fine Particles in Northeastern USA
Investigators: Philbrick, C. Russell , Allen, George , Clark, Richard , Daum, Peter , Dickerson, Russell R. , Doddridge, Bruce , Georgopoulos, Panos G. , Hatch, Victoria , Koutrakis, Petros , Lawrence, Joy , Lazaridis, M. , Lysak, Dan , Mohnen, Volker , Munger, J. W. , Newman, Leonard , Porter, Steve , Rao, S. Trivikrama , Wofsy, Steven C. , Wolfson, Jack M. , Zurbenko, Igor
Current Investigators: Philbrick, C. Russell , Allen, George , Clark, Richard , Daum, Peter , Dickerson, Russell R. , Doddridge, Bruce , Georgopoulos, Panos G. , Hatch, Victoria , Hogrefe, Christian , Kleinman, Larry , Koutrakis, Petros , Lawrence, Joy , Lazaridis, M. , Mohnen, Volker , Munger, J. W. , Porter, Steve , Rao, S. Trivikrama , Ryan, William , Wofsy, Steven C. , Wolfson, Jack M. , Zurbenko, Igor
Institution: Pennsylvania State University , Brookhaven National Laboratory , Harvard University , Millersville University of Pennsylvania , Rutgers University - New Brunswick , The State University of New York at Albany , University of Idaho , University of Maryland - College Park
Current Institution: Pennsylvania State University , Brookhaven National Laboratory , Harvard University , Millersville University of Pennsylvania , Rutgers, The State University of New Jersey , The State University of New York at Albany , University of Idaho , University of Maryland
EPA Project Officer: Shapiro, Paul
Project Period: April 15, 1998 through April 14, 2003 (Extended to April 14, 2004)
Project Period Covered by this Report: April 15, 1998 through April 14, 1999
Project Amount: $3,000,000
RFA: Special Opportunity in Tropospheric Ozone (1997) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Air
Objective:The objectives of this research project are to investigate the urban polluted environment to find the relationships and conditions leading to high ozone concentrations and increased levels of fine particles, determine the contributions from local and distant sources, examine the role that meteorological properties play in concentrating and distributing pollutant concentrations, and interpret these results within the context of past measurement programs to extend the knowledge gained to other applicable locations and atmospheric conditions.
Progress Summary:A field site in northeast Philadelphia was established, and the initial field measurements program was conducted on August 1-22, 1998. The field measurements program was given the name NE-OPS (Northeast-Oxidant and Particle Study) and was associated with the NARSTO program to adopt the NARSTO data archiving convention for the project. The primary objective of the measurement program during summer 1998 was to develop the facilities for operation of the field site and to compare the several instruments to be employed during the measurements program. However, the major air pollution episode of the summer occurred at the end of the measuring program, August 21-22, 1998, and provided an excellent data set for analysis. The measurements from the August 21-22 event clearly show the importance of transported aged materials in development of a significant pollution event. The unique set of vertical profiles obtained with lidar, tethersondes and aircraft spirals clearly show the incursion of processed precursor materials from an aloft layer, transported into the region, and then mixed downward to the surface by the rising daytime convective boundary layer. The initiation of an ozone and particulate matter pollution event on August 21, 1998, was captured in vertical profiles of the ozone, aerosol extinction, water vapor, and other meteorological parameters. The measurements clearly show the value of time sequences of ozone and aerosol (PM) profiles in understanding the evolution of air pollution episodes. Results reveal the importance of the surface layer dynamics in determining the actual pollution hazard for the surface dwelling population. During the 2-week period of the pilot study, hazardous levels of ozone frequently were observed existing above the surface layer. The vertical transport intensity and the composition of surface layer gases that can destroy ozone cause surface exposures to differ.
Future Activities:The 1998 summer measurement program resulted in establishing the field site in Philadelphia, provided a set of data for comparison of instruments and for development of the data analysis and quality control procedures, and provided an initial data set on the air quality in the Philadelphia area. The data obtained during the 1998 summer measurement program will be used for development of analysis procedures and should result in several papers that make use of the results. Plans have been made for an 8-week intensive investigation during the period of mid-June to mid-August 1999. Several other research groups are expected to join in with the 1999 measurement program, including groups from Argonne National Laboratory, Pacific Northwest National Laboratory, and several other universities.
Journal Articles on this Report : 1 Displayed | Download in RIS Format
|Other project views:||All 194 publications||26 publications in selected types||All 20 journal articles|
||Eatough DJ, Obeidi F, Pang YB, Ding Y, Eatough NL, Wilson WE. Integrated and real-time diffusion denuder sampler for PM2.5. Atmospheric Environment 1999;33(17):2835-2844.||