| 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 |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| 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. |
| Abstract |
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. |
| Notes |
"January 1982." Includes bibliographical references (p. 27) EPA-600/3-82-006 |
