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RECORD NUMBER: 9 OF 19

OLS Field Name OLS Field Data
Main Title Existing visibility levels in the United States : isopleth maps of visibility in suburban/nonurban area during 1974-76 /
Author Trijonis, John, ; Shapland, Dawn
Other Authors
Author Title of a Work
Shapland, Dawn.
Bachmann, John.
Wilson, William E.
Ellestad, Thomas G.
CORP Author Technology Service Corp., Santa Fe., NM.;Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Publisher U.S. Environmental Protection Agency, Office of Air, Noise and Radiation, Office of Air Quality Planning and Standards,
Year Published 1979
Report Number EPA-450/5-79-010; EPA-802815
Stock Number PB80-156177
OCLC Number 45721507
Subjects Visibility--United States--Maps. ; Air--Pollution--Research--United States.
Additional Subjects Visibility ; United States ; Rural areas ; Suburban areas ; Seasonal variations ; Maps
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=20011VPI.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EIAD  EPA-450/5-79-010 Region 2 Library/New York,NY 07/12/2002 DISPERSAL
EJBD ARCHIVE EPA 450-5-79-010 Headquarters Library/Washington,DC 09/02/2014
EKBD  EPA-450/5-79-010 Research Triangle Park Library/RTP, NC 01/26/2001
ERAD  EPA 450/5-79-010 Region 9 Library/San Francisco,CA 02/04/2013
ESAD  EPA 450-5-79-010 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-156177 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation vii, 27 pages : illustrations, 7 maps ; 28 cm
Abstract Maps are prepared which illustrate median, mid-day visibility levels in suburban/nonurban locations of the continental United States. Median visibilities at 94 locations are determined from cumulative frequency distributions of quality-checked airport observations. Seven locations in the Southwest with photographic photometry or nephelometry data (which agree quite well with the airport data) are also included. The spatial pattern of visibility is demonstrated with isopleth maps for both the annual medians and summertime medians during the years 1974-1976.
Notes EPA project officer: John Bachmann, William E. Wilson, and Thomas G. Ellestad. Prepared by Technology Service Corporation. "September 1979." Interim report. Includes bibliographical references (page 26). "EPA-450/5-79-010."
Contents Notes Maps are prepared which illustrate median, mid-day visibility levels in suburban/nonurban locations of the continental United States. Median visibilities at 94 locations are determined from cumulative frequency distributions of quality-checked airport observations. Seven locations in the Southwest with photographic photometry or nephelometry data (which agree quite well with the airport data) are also included. The spatial pattern of visibility is demonstrated with isopleth maps for both the annual medians and summertime medians during the years 1974-1976. The consistency of the spatial gradients in visibility and the agreement between neighboring locations attest to the quality of the visibility data. The isopleth maps reveal that the best visibility (70+ miles) occurs in the mountainous Southwest. Visibility is also quite good (45 - 70 miles) north and south of that region, but sharp gradients occur to the east and west of that region. Most of the area east of the Mississippi and south of the Great Lakes exhibits median visibilities of less than 15 miles annually and less than 10 miles during the summertime.
Place Published Research Triangle Park, N.C.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Air Quality Planning and Standards.; Technology Service Corporation.
Alternate Title Existing visibility levels in the United States : isopleth maps of visibility in suburban/nonurban areas during 1974-76
PUB Date Free Form 1979
NTIS Prices PC A03/MF A01
BIB Level m
Medium unmediated
Content text
Carrier volume
Cataloging Source RDA
OCLC Time Stamp 20140826140051
Language eng
Origin OCLC
Type MERGE
OCLC Rec Leader 02955cam 2200433Ki 45020