| Main Title |
Visibility in the Southwest : an exploration of the historical data base / |
| Author |
Trijonis, John.
|
| Other Authors |
|
| CORP Author |
Washington, Univ., St. Louis, Mo. ;Technology Service Corp., Santa Monica, Calif.;Environmental Sciences Research Lab., Research Triangle Park, N.C. |
| Publisher |
Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency ; Available through the National Technical Information Service, |
| Year Published |
1978 |
| Report Number |
EPA 600/3-78-039; EPA-803896 |
| Stock Number |
PB-282 942 |
| OCLC Number |
15262285 |
| Subjects |
Visibility--Southwestern States ;
Air quality--Southwestern States ;
United States--Southwestern States
|
| Additional Subjects |
Air pollution ;
Visibility ;
Particles ;
Trends ;
Aerosols ;
Sulfates ;
Data analysis ;
Regions ;
Copper ;
Atmospheric composition ;
Southwest region(United States)
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-3-78-039 |
|
Headquarters Library/Washington,DC |
07/22/2014 |
| EKBD |
EPA-600/3-78-039 |
|
Research Triangle Park Library/RTP, NC |
07/18/2003 |
| ELBD ARCHIVE |
EPA 600-3-78-039 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ERAD |
EPA 600/3-78-039 |
|
Region 9 Library/San Francisco,CA |
09/04/2012 |
| ESAD |
EPA 600-3-78-039 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-282 942 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
108 pages : illustrations, tables ; 28 cm. |
| Abstract |
The historical data base pertinent to visibility in the Southwest is analyzed. The data base includes over 25 years of airport visibility observations and more than 10 years of NASN particulate measurements. The investigation covers existing levels of visibility, long-term trends in visibility, and visibility/pollutant relationships. Although still quite good, visibility in the Southwest has deteriorated over the past two decades. The haze levels in the Southwest appear to be mostly the result of secondary aerosols, especially sulfates. These conclusions are verified by decreases in sulfates and increases in visibility during the 1967-1968 industry-wide copper strike. |
| Notes |
Includes bibliographical references (pages 101-103). |
