Record Display for the EPA National Library Catalog


Main Title Dependence of nephelometer scattering coefficients on relative humidity : fronts, nocturnal disturbance and wood smoke /
Author Griffing, Georg W. ; Griffing, George W.
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC. Meteorology and Assessment Div.
Publisher U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory, Meteorology and Assessment Division,
Year Published 1982
Report Number EPA-600/3-82-006
Stock Number PB82-188913
OCLC Number 703618564
Subjects Aerosols--Measurement. ; Hygreometry. ; Moisture meters.
Additional Subjects Nephelometers ; Humidity ; Air pollution ; Aerosols ; Visibility ; Data acquisition ; Density(Mass/volume) ; Wood ; Scattering coefficients
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-600/3-82-006 Research Triangle Park Library/RTP, NC 02/28/2011
NTIS  PB82-188913 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation viii, 28 p. : charts ; 28 cm.
The dependence of the nephelometer scattering coefficient of atmospheric air on the relative humidity at the RTP is discussed for four different meteorological examples. These examples feature (1) the passage of a low pressure system with thunderstorms, (2) the passage of a cold, dry front, (3) a nocturnal weather disturbance due to an unknown source, and (4) wood smoke aerosols from burning tree piles. Nephelometer scattering coefficient data were obtained by the use of two nephelometers. One nephelometer was operated at the ambient outside relative humidity and the other nephelometer at a different relative humidity. Using this operational mode of data acquisition, qualitative temporal information was deduced on the variations of aerosol size and number density as various meteorological parameters vary. The temporal trend of the visibility is also discussed for each example.
"January 1982." Includes bibliographical references (p. 27) EPA-600/3-82-006