DAS Research

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Selected Research Projects

1. Field Study Design and Coordination

DRI Faculty:	Alan Gertler (PI) Doug Lowenthal, John Sagebiel, Ricky Tropp
Title:	Cairo Source Attribution Study
Sponsor(s):	USAID/Chemonics International
Collaborator(s):	Chemonics Int., Egyptian Environmental Affairs Agency
Objectives-Results:	Cairo, Egypt suffers from high ambient concentrations of atmospheric pollutants, including particulates (PM), carbon monoxide (CO), oxides of nitrogen (NO_x), ozone (O₃), and sulfur dioxide (SO₂), and volatile organic compounds (VOCs). In order to develop and implement a pollution-control strategy and to reduce the health impact of air pollution in Cairo, the Cairo Air Improvement Project (CAIP) was established. As part of the CAIP, source attribution studies were performed to assess the impact of various sources (e.g., lead smelters, motor vehicles, oil combustion, open burning, geological material, etc.) to ambient pollutant levels. Specific objectives of the source attribution study include: Estimating the spatial and temporal distributions of PM₁₀ and PM_2.5, and VOCs. Collecting source samples to better characterize the contributions from sources in the Greater Cairo area. Attributing PM₁₀, PM_2.5, and VOCs concentrations to specific source categories. Comparing the results of the 2002 study against the 1999 source attribution studies performed in the winter (February/March) and fall (October/November) to evaluate the impact of CAIP implemented strategies. Particular emphasis was placed on determining the sources of airborne lead and PM observed in greater Cairo and the effectiveness of lead control strategies on ambient lead concentrations.

DRI Faculty:	John Watson (PI), Judy Chow, Hampden Kuhns, Norm Robinson, Ricky Tropp, John Bowen, Steve Kohl, Dale Crow
Title:	Fresno Supersite
Sponsor(s):	US EPA Office of Air Quality Planning and Standards
Collaborator(s):	Aerosol Dynamics, U.C. Riverside CE-CERT, R.J. Lee Associates
Objectives-Results:	Fresno is one of seven supersites established in urban areas within the United States by the US EPA to better understand the measurement, sources, and health effects of suspended particulate matter (PM). General objectives of the Supersite program are to: 1) test and evaluate non-routine-monitoring methods, with the intent to establish their comparability with existing methods and determine their applicability to SIP development, exposure assessment, and health impact determination; 2) acquire databases that can be used to evaluate relationships between aerosol properties, co-factors, and observed health end-points; and 3) support regulatory agencies in the development of emissions reduction implementation plans that cost-effectively reduce particle concentrations.

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