ABSTRACT
The Texas Air Quality Study (TexAQS) was the largest air quality field study ever undertaken in Texas and one of the largest ever done anywhere in the United States. During August and September of 2000, approximately 300 air quality investigators from around the world converged on Houston Texas. Five aircraft were deployed; five major ground chemistry sites were established and approximately 20 peripheral sites were established for collecting additional meteorological and chemical data. The scope, goals and preliminary results are available at the study website.

This presentation, by one of the four lead investigators for TexAQS, will provide an overview of the study and will discuss, in more detail, both the policy implications of the study and the enhanced understanding urban atmospheric chlorine chemistry that emerged from the study.