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PARTICULATE CHARACTERISTICS AND VISUAL EFFECTS OF THE ATMOSPHERE AT RESEARCH TRIANGLE PARK, NC
Citation:
Conner, W., R. Bennett, W. Weathers, AND W. Wilson. PARTICULATE CHARACTERISTICS AND VISUAL EFFECTS OF THE ATMOSPHERE AT RESEARCH TRIANGLE PARK, NC. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-91/026 (NTIS PB91183392), 1991.
Description:
During a one-month period in the fall of 1987 a wide range in the visual quality of the atmosphere at Research Triangle Park, NC, was observed. uring this period, the light scatter coefficient; SO2, NO2, and O3 concentrations; temperature; relative humidity; and radiation intensity of the atmosphere were continuously monitored. In addition, 60 filter samples were intermittently collected with two dichotomous (large and small particle) size-selective samplers The dichotomous samplers were operated concurrently to obtain samples on teflon and quartz filters for different analyses. lso collected were six impactor samples for sulfate size distribution analysis; and at selected times during the study, long-path measurements were made of the atmospheric extinction coefficient and the extinction of contrast by the atmosphere.
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PARTICULATE CHARACTERISTICS AND VISUAL EFFECTS OF THE ATMOSPHERE AT RESEARCH TRIANGLE PARK, NC