HR: 10:35h
AN: A12A-02    [Abstracts]
TI: Understanding The Correlation of San Joaquin Air Quality Monitoring With Aerosol Optical Thickness Satellite Measurements
AU: * Ballard, M
EM: marshall.ballard@gmail.gov
AF: DEVELOP Internship Program, NASA Ames Research Center Mail Stop 242-4, Moffett Field, CA 94035-1000, United States
AU: Newcomer, M
EM: newcomer@sfsu.edu
AF: DEVELOP Internship Program, NASA Ames Research Center Mail Stop 242-4, Moffett Field, CA 94035-1000, United States
AU: Rudy, J
EM: J_Rudy154@hotmail.com
AF: DEVELOP Internship Program, NASA Ames Research Center Mail Stop 242-4, Moffett Field, CA 94035-1000, United States
AU: Lake, S
EM: surfersachi@hotmail.com
AF: DEVELOP Internship Program, NASA Ames Research Center Mail Stop 242-4, Moffett Field, CA 94035-1000, United States
AU: Sambasivam, S
EM: sivakami07@gmail.com
AF: DEVELOP Internship Program, NASA Ames Research Center Mail Stop 242-4, Moffett Field, CA 94035-1000, United States
AU: Strawa, A W
EM: Anthony.W.Strawa@nasa.gov
AF: Atmospheric Science Branch Earth Science Division, NASA Ames Research Center Mail Stop 245-4, Moffett Field, CA 94035-1000, United States
AU: Schmidt, C
EM: cschmidt@mail.arc.nasa.gov
AF: DEVELOP Internship Program, NASA Ames Research Center Mail Stop 242-4, Moffett Field, CA 94035-1000, United States
AU: Skiles, J
EM: Joseph.W.Skiles@nasa.gov
AF: DEVELOP Internship Program, NASA Ames Research Center Mail Stop 242-4, Moffett Field, CA 94035-1000, United States
AB: Air quality in the San Joaquin Valley (SJV) has failed to meet state and federal attainment standards for Particulate Matter (PM) for several years. Air quality agencies currently use ground monitoring sites to monitor air quality in the San Joaquin Valley. This method provides accurate information at specific points but does not provide a clear indication of what is occurring over large regions. Using measurements from satellite imagery has the potential to provide valuable air quality information in a timely manner across large regions. While previous studies show good correlations between satellite derived Aerosol Optical Thickness (AOT) and surface PM measurements on the East Coast of the United States, the data do not correlate well in the SJV. This paper compares PM_2.5 ground data from the California Air Resources Board (CARB) and the Interagency Monitoring of Protected Environments (IMPROVE) sites with satellite data in an effort to understand this discrepancy. To verify satellite AOT value accuracy, ground AOT values were collected from the Aerosol Robotic Network (AERONET) and from measurements using the hand-held MicroTops II Sun Photometer field instrument. We found good correlation of the AOT values between MODIS, MISR and AERONET. However, we found poor correlations between satellite- based AOT values and PM_2.5 values, and consideration of aerosol speciation did not improve the correlations. Further investigation is needed to determine the causes of the poor correlation. Acquiring detailed information on the meteorological conditions and vertical profiles of the atmosphere using ground-based LIDAR or data from CALIPSO may provide better results.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 4801 Aerosols (0305, 4906)
DE: 4906 Aerosols (0305, 4801)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting