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Application of Satellite Data for Three-dimensional Monitoring of PM2.5 Formation and Transport in San Joaquin Valley (SJV), California

Project Leads and Affiliations:

Dr. Rebecca Rosen (EPA Region 9, Air Division)
James Szykman (EPA/Office of Research and Development)

Key Collaborators:

Carol Bohnenkamp, EPA Region 9, Air Division
Dr. D. Allen Chu, MODIS Aerosol Team, Joint Center for Earth Systems Technology-University of Maryland Baltimore County (JCET-UMBC)/NASA Goddard Space Flight Center
Dr. Russell DeYoung and Dr. J. A. Al-Saadi, Science Directorate, NASA Langley Research Center
Dr. Ajith Kaduwela, California Air Resources Board (CARB)

Project Abstract Written: October 2005

Project Timeframe: 2006 - 2008

Topographic map of California shows how San Joaquin Valley (in green) traps air pollution like a bowl.
Topography of California shows how San Joaquin Valley (in green) traps air pollution like a bowl. Photo: US EPA Region 9.

Project Summary:

  1. Identify the opportunity to improve environmental health decision making: High concentrations of PM2.5 in SJV significantly affect the public, environmental, and economic health of the area. Currently, point source measurements from ground-based monitoring networks are used to validate model results, however these measurements are limited spatially. This project will establish a three-dimensional PM2.5 data set for SJV, leading to more comprehensive model evaluation and information that may produce more effective, better targeted control strategies to reduce PM2.5.
  2. Identify the expected major tangible results and products: This project will integrate high resolution MODIS AOD, lidar aerosol vertical profile, and ground-based PM2.5 to derive surface PM2.5 measurements from MODIS AOD. Evaluation of the adequacy of the PM2.5 ground-based measurement network and photochemical model validation are the expected products.
  3. Describe concisely how the collaboration is expected to work: EPA Region 9 Air Division will lead NASA Langley, JCET-UMBC, and EPA ORD to use technical tools and expertise to produce the 3-D data products for SJV. EPA Region 9 Air Division and CARB will determine the application of the technical products for regulatory purposes.
  4. Describe how the pilot project progress will be measured/tracked (i.e., an abbreviated logic model): Region 9 Air Division will work with the project collaborators to evaluate the results of the three phases of the project and determine the potential of the results to inform control strategies to reduce PM2.5 in SJV. At the conclusion of each phase, reports of the major results of each phase and any suggested regulatory changes will be distributed to decision makers at EPA and CARB.

Related Links:

More Advanced Monitoring Initiative (AMI) Projects


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