Overview of IMPROVE and Visibility

This section provides introductory information about the IMPROVE monitoring program and results.  In addition, information concerning visibility science, issues of concern and regulations are provided.  More detailed information concerning these topics can be found via links in the documents and other sections of the website. 

IMPROVE Monitoring Program - Description of the IMPROVE monitoring program including objectives, monitoring instruments, analysis techniques, quality assurance and monitoring site locations.

Introduction to the Regional Haze Regulation - A summary of the regional haze rule and the visibility regulations leading to the haze rule.

Looking through the Atmosphere - An introduction to the science of visibility including the nature of light, the interaction of light with air pollutants, and the colors we see in the atmosphere.