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Stability of the surface layer and its relation to the dispersion of primary pollutants in St. LouisThe effects of atmospheric stability on the dispersion of primary pollutants such as CO, total hydrocarbons (THC), and NO were examined in St. Louis. The pollutant levels were measured at 25 stations, temperature at 12 stations at 5 and 30 m height, and wind speed and direction at the 30 m level at 12 stations. Correlation coefficients were generated for pairs of the vertical temperature differences, the log of the mean wind speed reciprocal, the bulk Richardson number, and specific pollutant concentrations. A high correlation was obtained between the thermal stability and the urban concentration of the primary pollutants in the lowest part of the boundary layer. A restricted nighttime dispersion of the pollutants was observed, indicating near-ground increased concentrations at times when the source emissions actually decrease.
Document ID
19830057904
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Remsberg, E. E.
(NASA Langley Research Center Hampton, VA, United States)
Woodbury, G. E.
(NASA Langley Research Center Atmospheric Sciences Div., Hampton, VA, United States)
Date Acquired
August 11, 2013
Publication Date
February 1, 1983
Publication Information
Publication: Journal of Climate and Applied Meteorology
Volume: 22
ISSN: 0733-3021
Subject Category
Environment Pollution
Accession Number
83A39122
Distribution Limits
Public
Copyright
Other

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