| Main Title |
Haze Climate of the United States. |
| Author |
Husar, R. B. ;
Patterson, D. E. ;
|
| CORP Author |
Washington Univ., St. Louis, MO. Center for Air Pollution Impact and Trend Analysis.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| Year Published |
1986 |
| Report Number |
EPA-R-810351; EPA/600/3-86/071; |
| Stock Number |
PB87-141057 |
| Additional Subjects |
Climate ;
Haze ;
United States ;
Visibility ;
History ;
Measurement ;
Weather stations ;
Trends ;
Fog ;
Graphs(Charts) ;
Meteorological charts ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB87-141057 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
102p |
| Abstract |
The historical data base of visual range at 137 surface synoptic meteorological stations is examined. The original observations of visual range each noon are converted to light extinction coefficient, BEXT= 24/VISIBILITY, a measure of haziness. The bext is summarized for each calendar quarter from 1948 to 1963 as percentiles of the distribution function, namely the 25th, 50th (median), 75th and 90th percentile. Detailed examination of station by station behavior indicate that the median is often obscured by an upper threshold of visual range reported. The results consist of trend graphs, as well as seasonal contour maps for each decade of the time period. |
| Supplementary Notes |
Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab. |
| NTIS Title Notes |
Final rept.. |
| PUB Date Free Form |
Dec 86 |
| Category Codes |
55C |
| NTIS Prices |
PC A06/MF A01 |
| Primary Description |
600/09 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
709315337 |
| Origin |
NTIS |
| Type |
CAT |
