Update:

As National Ambient Air Quality Standard (NAAQS) for ozone is made more stringent, the background concentrations of ozone, that would occur in the absence of man-made emissions in North America, will become increasingly important in determining the magnitudes of emission reductions that will be required to achieve the ozone NAAQS. The magnitude of ozone concentrations that would occur in the absence of North American anthropogenic emissions is characterized as Policy Relevant Background (PRB) ozone. The Center for Energy and Environmental Resources (CEER), at the University of Texas at Austin (UT) hosted a workshop on the methods used to estimate PRB ozone in the United States.

CEER invited ten nationally recognized experts, working on the scientific issues related to PRB ozone, to a workshop titled “Methods for Establishing Policy Relevant Ozone Background Ozone Concentrations in the United States”. Workshop participants made public presentations and responded to a set of charge questions regarding PRB and the variability in both location and time throughout the year. The workshop participants drafted a consensus set of findings and recommendations which have been submitted for publication in the peer-reviewed scientific literature. The report will be released when accepted for publication.
 

Workshop Announcement with List of Speakers

Workshop Agenda with Links to Presentations