Record Display for the EPA National Library Catalog

RECORD NUMBER: 15 OF 28

OLS Field Name OLS Field Data
Main Title Effects of atmospheric aerosols on infrared irradiance at the earth's surface in a nonurban environment /
Author Riches, M. R. ; Riches, Michael R.
Other Authors
Author Title of a Work
Peterson, James T.
Flowers, Edwin C.
CORP Author North Carolina State Univ., Raleigh. Dept. of Geosciences.;National Environmental Research Center, Research Triangle Park, N.C. Meteorology Lab.
Publisher Environmental Protection Agency, Office of Research and Development ; National Technical Information Service,
Year Published 1975
Report Number EPA-650/4-75-017; EPA-ROAP-26AAS
Stock Number PB-243 635
OCLC Number 01891446
Subjects Aerosols. ; Infrared radiation.
Additional Subjects Air pollution ; Aerosols ; Atmospheric attenuation ; Solar radiation ; Turbidity ; Light transmission ; Temperature ; Humidity ; Radiometers ; Detectors ; Infrared radiation ; Least squares method ; Regression analysis ; Earth surface ; Air pollution detection ; Atmospheric transmissivity
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=20015UVD.PDF
Local Library Info
Library Local Subject Local Note
EKB Errata ([1] leaf) laid in.
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 650/4-75-017 Region 3 Library/Philadelphia, PA 05/24/1996
EJBD ARCHIVE EPA 650-4-75-017 Headquarters Library/Washington,DC 04/20/2010
EJBD  EPA 650-4-75-017 c.1 Headquarters Library/Washington,DC 05/07/2013
EKAM  EPA 650/4-75-017 Region 4 Library/Atlanta,GA 01/17/1997
EKBD  EPA-650/4-75-017 Research Triangle Park Library/RTP, NC 09/11/2012
ELBD  EPA 650-4-75-017 AWBERC Library/Cincinnati,OH 06/22/2006
NTIS  PB-243 635 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 vi, 36 p. ; 27 cm.
Abstract
This report describes a study designed to measure hemispheric infrared downward-directed irradiance at the earth's surface and ambient aerosol concentrations at Research Triangle Park, North Carolina. A Funk-type net radiometer (with a blackened cavity on the underside) was used to measure the incident all-wave energy. From the value obtained, the observed solar radiation was subtracted to determine the infrared component. The expected incident infrared irradiance was calculated from prevailing atmospheric conditions. Six methods were used for these calculations: four empirical equations based on surface conditions, the Yamamoto chart, and a radiative transfer program using vertical profiles of temperature and moisture. The observed-minus-calculated downwelling irradiances were then compared to concurrent measurements of turbidity obtained with a Volz sunphotometer, nephelometer-indicated atmospheric extinction coefficient, and a relative humidity. These measurements were analyzed by least-squares regression to determine the extent to which incident hemispheric infrared radiation is affected by varying amounts of atmospheric aerosols and relative humidity.
Notes
"Program Element No. lAA009; ROAP No. 26AAS." "May 1975." Includes bibliographical references (p. 32-35).