| Main Title |
Dependence of nephelometer scattering coefficients on relative humidity : evolution of aerosol bursts / |
| Author |
Griffing, George W.
|
| CORP Author |
Environmental Sciences Research Lab., Research Triangle Park, NC. |
| Publisher |
U.S. Environmental Protection Agency, Office of Research and Development, Health Effects Research Laboratory, |
| Year Published |
1981 |
| Report Number |
EPA-600/4-81-030 |
| Stock Number |
PB81-198293 |
| OCLC Number |
703638359 |
| Subjects |
Aerosols--Measurement ;
Hygrometry ;
Moisture meters
|
| Additional Subjects |
Nephelometers ;
Humidity ;
Aerosols ;
Weather ;
Light(Visible radiation) ;
Scattering ;
Solar radiation ;
Gases ;
Aerosol burst ;
Anticyclonic weather ;
NTISEPAORD
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EKBD |
EPA-600/4-81-030 |
|
Research Triangle Park Library/RTP, NC |
02/28/2011 |
| NTIS |
PB81-198293 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vii, 29 p. : charts ; 28 cm. |
| Abstract |
Observations on the temporal dependence of the nephelometer scattering coefficient on relative humidity are presented and discussed for four different cases. For each case, the weather at the Research Triangle Park, North Carolina was dominated by an anticyclonic weather system. By taking simultaneous nephelometer scattering coefficient observation at two different relative humidities, it was possible to conclude that with nocturnal stable atmospheric conditions: In general, the scattering coefficient increases from sundown to sunup due to aerosol growth and an increasing trend of the aerosol number density: In general, the relatively rapid increase and subsequent decrease of the scattering coefficient during a 2 to 3 hour period after sunup is due to a relatively rapid aerosol growth and shrinkage. The latter behavior of the scattering coefficient was called an aerosol burst. |
| Notes |
"March 1981." Includes bibliographical references (p.28-29) "EPA-600/4-81-030." |
