Proceedings from the forum held September 21-23, 2004, at the Doubletree Hotel and Executive Meeting Center in Rockville, Maryland. "The theme of the forum was "Information to improve community responses to urban atmospheric hazards, weather events, and climate." It focused on the following elements of urban meteorology: severe weather, homeland security, air quality, water quality, and climate. The forum's agenda included key presentations at the beginning and end of the forum, five plenary session panels, and six workshop sessions scheduled in pairs ... This document summarizes the proceedings of the forum and provides a foundation for building on our successes"--P. iii. "Washington, D.C." "March 2005."