Concentration Fluctuations and Averaging Time in Vapor Clouds
Copyright © 1995 American Institute of Chemical Engineers
Author(s): David J. Wilson
Published Online: 17 SEP 2010
Print ISBN: 9780816906796
Online ISBN: 9780470937976
About this Book
This book contributes to more reliable and realistic predictions by focusing on sampling times from a few seconds to a few hours. Its objectives include developing clear definitions of statistical terms, such as plume sampling time, concentration averaging time, receptor exposure time, and other terms often confused with each other or incorrectly specified in hazard assessments; identifying and quantifying situations for which there is no adequate knowledge to predict concentration fluctuations in the near-field, close to sources, and far downwind where dispersion is dominated by atmospheric turbulence; identifying areas where further information is required to define concentration variability statistics; and formulating an operation model for concentration fluctuations based on the current state of knowledge of dispersion processes.