Comparison Studies
Intercomparision of Ambient Optical Monitoring Techniques by John V. Molenar, David S. Cismoski, and Roger M. Tree, Air Resource Specialists, Inc., Fort Collins, Colorado - 1992.
Comparison of Atmospheric Extinction Measurements made by a Transmissometer, Integrating Nephelometer, and Teleradiometer with Natural and Artificial Black Target by William C. Malm, Air Quality Division, National Park Service, CIRA- Foothills Campus, Colorado State University, Fort Collins, Colorado; Gerald Persha, Optec, Inc., Lowell, Michigan; Roger Tree, Air Resource Specialists, Inc., Fort Collins, Colorado; Roger Stocker, Department of Atmospheric Science, Colorado State University, Fort Collins, Colorado; Ivar Tombach, Aerovironment, Inc., Monrovia, California; and Hari Iyer, Department of Statistics, Colorado State University, Fort Collins, Colorado - September 7, 1986.
Comparison of Three Measures of Visibility Extinction in Denver, Colorado by John G. Watson, Judith C. Chow, Lyle C. Pritchett, Desert Research Institute, University of Nevada System, Reno, Nevada; L. Williard Richards, Sonoma Technology, Inc., Santa Rosa, California; David L. Dietrich, John Molenar, John Faust, Air Resource Specialists, Inc., Fort Collins, Colorado; Stephen R. Andersen, ENSR Consulting and Engineering, Fort Collins, Colorado; and Christine Sloane, General Motors Research Laboratory, Dearborn, Michigan- 1989.
NGN Nephelometer
Theoretical Analysis of the Response Characteristics of Optec NGN-2 and TSI 3563 Integrating Nephelometers, by John Molenar, Air Resource Specialists, Inc., Fort Collins, Colorado - August 8, 1997.
Analysis of the Optec NGN-3 PM2.5 Size-cut Nephelometer, by Joseph P. Adlhoch, John V. Molenar, David L. Dietrich, Air Resource Specialists, Inc., Fort Collins, Colorado; and Gerald C. Persha, Optec, Inc., Lowell, Michigan - 1999.
Analysis of the Real World Performance of the Optec NGN-2 Ambient Nephelometer, by John V. Molenar, Air Resource Specialists, Inc., Fort Collins, Colorado - Presented at Visual Air Quality: Aerosols and Global Radiation Balance, Attitach Bear Summit, Barlett, New Hampshire, September 9-12, 1997.
Theoretical and Experimental Analysis of the Optec NGN Nephelometer by John V. Molenar, Air Resource Specialists, Inc., Fort Collins, Colorado.
Field Test Results of the Optec NGN-3 PM2.5 Size-cut Nephelometer by Joseph Adlhoch, John V. Molenar, David Dietrich and Tom Moore Air Resource Specialists, Inc., Fort Collins, Colorado.
