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Thermal stability of the surface layer and its relation to the dispersion of primary pollutants in St. LouisThe present investigation is concerned with the applicability of the vertical temperature gradient, DT, as a dispersion parameter for urban area sources. Data on DT were tabulated from temperature measurements at 5 m and 30 m obtained on 30 m towers at 12 stations. DT was obtained by subtracting the value at 5 m from that at 30 m. Positive DT values represent an inversion. Accuracy of the DT data is 0.1 K. Hourly measurements of DT along with concentrations of the primary pollutants, CO, NO, and total hydrocarbons (THC), are available from the 1976 RAPS data base for St. Louis. Linear correlations between a given pollutant species concentration and DT are developed from that data set. It could be confirmed that a strong positive correlation exists at night between the thermal stability of the lowest part of the boundary layer and the urban concentration of the primary pollutants CO, NO, and hydrocarbons.
Document ID
19820043087
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Remsberg, E. E.
(NASA Langley Research Center Hampton, VA, United States)
Woodbury, G. E.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Environment Pollution
Meeting Information
Meeting: Joint Conference on Applications of Air Pollution Meteorology
Location: San Antonio, TX
Start Date: January 11, 1982
End Date: January 15, 1982
Sponsors: American Meteorological Society
Accession Number
82A26622
Distribution Limits
Public
Copyright
Other

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