Main Title |
Temporal and Spatial Variability of the Visual Effects of Stack Plumes. |
Author |
Seigneur, C. ;
Hudischewskyj, A. B. ;
Hogo, H. ;
|
CORP Author |
Systems Applications, Inc., San Rafael, CA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
Year Published |
1985 |
Report Number |
EPA/600/3-85/039; |
Stock Number |
PB85-200020 |
Additional Subjects |
Plumes ;
Visibility ;
Spatial distribution ;
Temporal environments ;
Air pollution ;
Chimneys ;
Field tests ;
Mathematical models ;
Turbulent flow ;
Comparison ;
Atmospheric scattering ;
Atmospheric disturbances ;
Industrial wastes ;
Combustion products ;
Electric power plants ;
Experimential design ;
Sulfur transport and transformation program ;
Atmospheric dispersion ;
Computer applications
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB85-200020 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
49p |
Abstract |
Temporal and spatial variabilities of stack plumes are analyzed by means of field data analysis and computer simulations. In this investigation, photographs from field programs of the study Visibility Impairment due to Sulfur Transport and Transformation in the Atmosphere were analyzed via sensitometry, and PLUVUE II model simulations were conducted for a case study. Analysis of the temporal variability of plume visibility led to documentation of the fact that the visual effects of plumes vary with time because of (1) turbulent fluctuations, (2) changes in atmospheric stability, and (3) changes in the observer-plume-sun scattering angle. Likewise, the analysis of the spatial variability of plume visibility led to the fact that the visual effects of plumes vary with downwind distance from the stacks because of (1) turbulent fluctuations, (2) dilution of the plume and/or a change in the observer-plume distance, and (3) changes in the observer-plume-sun scattering angle. |
NTIS Title Notes |
Final rept. 1 Feb 83-1 Jan 84. |
PUB Date Free Form |
May 85 |
Category Codes |
4A; 55B; 68A; 97R |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
521419803 |
Origin |
NTIS |
Type |
CAT |