Main Title |
Trends of Seasonal Haziness and Sulfur Emissions Over the Eastern U.S. |
Author |
Husar, R. B. ;
|
CORP Author |
Washington Univ., St. Louis, MO. Center for Air Pollution Impact and Trend Analysis.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. |
Publisher |
Jun 89 |
Year Published |
1989 |
Report Number |
EPA/600/3-89/062; |
Stock Number |
PB89-220511 |
Additional Subjects |
Haze ;
Sulfur dioxide ;
Air pollution ;
United States ;
Regional planning ;
Visibility ;
Trends ;
Winter ;
Summer ;
Comparison ;
Periodic variations ;
Graphs(Charts) ;
States(United States) ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-220511 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
31p |
Abstract |
The reduction in visual range in the eastern U.S. is caused largely by sulfate particles. Therefore, it is expected that the spatial distribution and temporal trend of man-made haziness will, to some extent, correspond to the spatial-temporal pattern of sulfur emissions. The purpose of the study is to examine the sulfur emission-haze relationship using regionally and seasonally disaggregated SO(2) emissions and visual range data. Across much of the Northeast the wintertime haziness has been either declining or slightly increasing over the past three decades. The summertime haziness has been generally increasing in all areas of the eastern U.S. The monthly sulfur emissions for individual states were reconstructed using yearly emission trends and seasonal emission rates. Before 1970 winter emissions were greater but since the 1970's the summer emissions have become comparable in magnitude. These relationships may be used as a first indication of how visibility might change with changes in SO(2) emissions. |
Supplementary Notes |
Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. |
Category Codes |
68A; 91A; 55C |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
927230104 |
Origin |
NTIS |
Type |
CAT |