Impacts of background ozone production on Houston and Dallas, TX Air Quality during the NOAA 2006 TexAQS field mission

R. Bradley Pierce
NASA Langley


During 2006 NOAA Texas Air Quality Study (TexAQS II) field mission members of the Real-time Air Quality Modeling System (RAQMS) team, in collaboration with representatives from the NOAA P3 and NASA HSRL, AIRS, CALIPSO, OMI, and TES instrument teams, conducted a field study involving synthesis of near-real-time satellite, airborne and surface measurements, and RAQMS chemical/aerosol analyses to investigate regional influences on Houston and Dallas Air Quality. Results show that enhanced background O3 production was present 16% of days during the study in Houston and Dallas Fort Worth (DFW), and preceded 3 out of 6 Houston periods and 4 out of 6 DFW periods with elevated O3. Case studies linking Houston local air quality to remote satellite observations during TEXAQS illustrate the influence of remote emissions from the SE US and Pacific NW on Houston air quality and demonstrates the importance of integrating of satellite, aircraft, and surface measurements of aerosol and trace gases in conjunction with advanced modeling techniques for characterizing the impact of emissions from remote sources on local air quality.