Held, Tony, Qi Ying, Ajith Kaduwela, Michael J. Kleeman (2004) Modeling Particulate Matter in the San Joaquin Valley with a Source-Oriented Externally Mixed Three-Dimensional Photochemical Grid Model. Atmospheric Environment 38 (22), 3689 - 3711
The CIT-UCD model results show excellent agreement with most measurements collected during the IMS95 4–6 January 1996 modeling episode. The fractional bias (FBIAS) for SJV ozone and PM10 are approximately 0.16 and −0.19, respectively, for all SJV stations excluding Bakersfield. Most modeled criteria gases, PM precursor gases, and chemically speciated PM concentrations show strong agreement with their corresponding measurements at the Chowchilla, Fresno, Kern Wildlife Refuge, and Bakersfield sampling stations. Furthermore, the modeled PM size distribution of nitrate, ammonium ion, and sulfate agree well with cascade impactor measurements made at Bakersfield on 5 January 1996. Given the robust model agreement with both gas and condensed phase measurements, it appears that the CIT-UCD model adequately captures the fundamental transport and chemical reactivity of air pollutants in the IMS95 domain during a typical severe pollution episode. These results suggest that the CIT-UCD model can be used to explore control scenarios designed to improve air quality in the SJV.