Record Display for the EPA National Library Catalog


Main Title Remote monitoring of gaseous pollutants by differential absorption laser techniques /
Author Ahmed, S. A. ; Gergely, J. S. ; Barone, F.
CORP Author City Coll., of the City Univ. of New York. Dept. of Electrical Engineering.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory,
Year Published 1980
Report Number EPA-600/2-80-049; EPA-803109
Stock Number PB80-179351
OCLC Number 42712577
Subjects Air--Pollution--Measurement--Optical methods ; Air--Pollution--Measurement--Equipment and supplies
Additional Subjects Lidar ; Air pollution ; Remote sensing ; Nitrogen oxide ; Sulfur dioxide ; Ozone ; Optical radar ; Concentration(Composition) ; Errors ; Dyes ; Scintillation ; Aerosols ; Drift ; Adsorption ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  EPA-600/2-80-049 Region 1 Library/Boston,MA 05/25/2016
EJBD  EPA 600-2-80-049 Headquarters Library/Washington,DC 04/01/2016
EKBD  EPA-600/2-80-049 Research Triangle Park Library/RTP, NC 07/04/2003
ELBD ARCHIVE EPA 600-2-80-049 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 600-2-80-049 AWBERC Library/Cincinnati,OH 09/09/2016
NTIS  PB80-179351 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiii, 212 pages : illustrations ; 28 cm.
A single-ended laser radar (LIDAR) system was designed, built, and successfully operated to measure range-resolved concentrations of NO2, SO2, and O3 in the atmosphere using a Differential Absorption of Scattered Energy (DASE) LIDAR technique. The system used a flash-lamp pumped dye laser as the primary source of laser energy. For the NO2 measurements, the dye laser output was used directly in a novel simultaneous two wavelength output mode in which two wavelengths, one on and one off the resonance absorption of NO2 molecules are transmitted simultaneously and the relative attenuation determined for the two backscattered signals detected. This mode of operation effectively reduces errors due to scintillation and aerosol drift. For the SO2 and O3 measurements, it was necessary to frequency double the output of the dye laser to match the absorption spectra of the SO2 and O3 molecules. Field measurements, which were carried out over the Upper East Side of Manhattan for all three pollutants, produced range-resolved concentrations at ranges of over two kilometers.
"EPA-600/2-80-049." EPA grant no. 803109; EPA project officer: William F. Herget. Includes bibliographical references (pages 206-211).