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2023
Long, R., S. Urbanski, E. Lincoln, M. Colon, S. Kaushik, J. Krug, R. Vanderpool, AND M. Landis. Summary of PM2.5 Measurement Artifacts Associated with the Teledyne T640 PM Mass Monitor Under Controlled Chamber Experimental Conditions Using Polydisperse Ammonium Sulfate Aerosols and Biomass Smoke. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION. Air & Waste Management Association, Pittsburgh, PA, , na, (2023). https://doi.org/10.1080/10962247.2023.2171156
2022
Long, R. AND M. Landis. Comparison of Ozone Measurement Methods in Biomass Burning Plumes. Western Regional Air Partnership – Fire and Smoke Workgroup Meeting, NA, Microsoft Teams, January 19, 2022.
Whitehill, A., R. Long, S. Urbanski, M. Colon, A. Habel, AND M. Landis. Evaluation of carpool and aeroqual air sensors in biomass burning plumes. ATMOSPHERE. MDPI, Basel, Switzerland, 13(6):877, (2022).
Urbanski, S., R. Long, H. Halliday, A. Habel, E. Lincoln, AND M. Landis. Fuel layer specific pollutant emission factors for fire prone forest ecosystems of the western U.S. and Canada. Atmospheric Environment: X. Elsevier B.V., Amsterdam, Netherlands, , 0000, (2022). https://doi.org/10.1016/j.aeaoa.2022.100188
Long, R. AND L. Valin. Impacts of lake breeze meteorology on ozone gradient observations along Lake Michigan shorelines in Wisconsin. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 269:0, (2022). https://doi.org/10.1016/j.atmosenv.2021.118834
Johnson, C., A. Whitehill, R. Long, AND R. Vanderpool. Investigation of Gaseous Criteria Pollutant Transport Efficiency as a Function of Tubing Material. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-22/212, 2022.
2021
Long, R. Boundary layer versus free tropospheric submicron particle formation: A case study from NASA DC-8 observations in the Asian continental outflow during the KORUS-AQ campaign. Atmospheric Research. Elsevier Science BV, Amsterdam, Netherlands, 264:na, (2021).
Long, R. AND L. Valin. Characterization of ground-based atmospheric pollution and meteorology sampling stations during the Lake Michigan Ozone Study 2017. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION. Air & Waste Management Association, Pittsburgh, PA, 71(7):866-889, (2021). https://doi.org/10.1080/10962247.2021.1900000
Long, R., A. Whitehill, A. Habel, S. Urbanski, H. Halliday, M. Colon, S. Kaushik, AND M. Landis. Comparison of Ozone Measurement Methods in Biomass Burning Smoke: An evaluation under field and laboratory conditions. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, 14(3):1783-1800, (2021).
Long, R. AND J. Szykman. Comprehensive evaluations of diurnal NO2 measurements during DISCOVER-AQ 2011: effects of resolution-dependent representation of NOx emissions. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 21(14):11133-11160, (2021). https://doi.org/10.5194/acp-21-11133-2021
Krug, Jonathan D., R. Long, M. Colon, A. Habel, S. Urbanski, AND M. Landis. Evaluation of Small Form Factor, Filter-Based PM2.5 Samplers for Temporary Non-Regulatory Monitoring During Wildland Fire Smoke Events. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 265:0, (2021). https://doi.org/10.1016/j.atmosenv.2021.118718
Olson, D., T. Riedel, J. Offenberg, M. Lewandowski, R. Long, AND Tad Kleindienst. Quantifying wintertime O3 and NOx formation with relevance vector machines. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 259:118538, (2021). https://doi.org/10.1016/j.atmosenv.2021.118538
Long, R. The Korea-United States Air Quality (KORUS-AQ) field study. Elementa: Science of the Anthropocene. University of California Press (UC Press), Oakland, CA, 9(1):1-27, (2021). https://doi.org/10.1525/elementa.2020.00163
Landis, M., R. Long, Jonathan D. Krug, M. Colon, R. Vanderpool, A. Habel, AND S. Urbanski. The U.S. EPA Wildland Fire Sensor Challenge: Performance and Evaluation of Solver Submitted Multi-Pollutant Sensor Systems. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 247:NA, (2021). https://doi.org/10.1016/j.atmosenv.2020.118165
Long, R. The roles of suburban forest in controlling vertical trace gas and OH reactivity distributions – a case study for Seoul Metropolitan Area. Faraday Discuss. Royal Society of Chemistry, Cambridge, Uk, , 537-550, (2021). https://doi.org/10.1039/d0fd00093k
2020
Landis, M., R. Long, A. Habel, S. Urbanski, AND J. Perth. Evaluating the Performance of Multi-Pollutant Sensor Pods in Biomass Combustion Smoke Apil 2020. International Association of Wildland Fire Smoke Symposium, Raleigh, NC, April 20 - 24, 2020.
Halliday, H., C. Johnson, R. Long, R. Vanderpool, AND A. Whitehill. Recommendations for Nationwide Approval of Nafion™ Dryers Upstream of UV-Absorption Ozone Analyzers. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-20/390, 2020.
2019
Whitehill, A., L. Valin, D. Williams, J. Szykman, R. Long, S. Kaushik, P. Furdyna, AND D. Felton. Evaluation of continuous formaldehyde measurements in air. NYSERDA Air Quality & Health Effects Workshop, Albany, NY, April 09 - 10, 2019.
Whitehill, A., D. Williams, L. Valin, J. Szykman, AND R. Long. Formaldehyde and Formic Acid Measurements at Westport, CT. LISTOS Science Team Meeting, Albany, NY, April 11, 2019.
Mukerjee, S., L. Smith, R. Long, W. Lonneman, S. Kaushik, M. Colon, K. Oliver, AND D. Whitaker. Particulate matter, nitrogen oxides, ozone, and select volatile organic compounds during a winter sampling period in Logan, Utah, USA. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION. Air & Waste Management Association, Pittsburgh, PA, 69(6):778-788, (2019). https://doi.org/10.1080/10962247.2019.1587553
Olson, D., T. Riedel, R. Long, J. Offenberg, M. Lewandowski, AND T. Kleindienst. Time series analysis of wintertime O3 and NOx formation using vector autoregressions. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 218:116988, (2019). https://doi.org/10.1016/j.atmosenv.2019.116988
Whitehill, A., I. George, R. Long, K. Baker, AND M. Landis. Volatile Organic Compound Emissions from Prescribed Burning in Tallgrass Prairie Ecosystems. ATMOSPHERE. MDPI, Basel, Switzerland, 10(8):464, (2019). https://doi.org/10.3390/atmos10080464
2018
Whitehill, A., R. Long, AND S. Kaushik. Evaluation of Continuous Formaldehyde Measurements. National Ambient Air Monitoring Conference 2018, Portland, OR, August 13 - 16, 2018.
Whitehill, A., R. Long, AND S. Kaushik. Evaluation of continuous formaldehyde measurements in ambient air. Presented at AGU Fall Meeting 2018, Washington, DC, December 10 - 14, 2018.
Duvall, R., R. Long, M. Beaver, AND Jim Szykman. Student and Teacher-led Data Collection using Air Sensors during the DISCOVER-AQ Study. Air Sensors International Conference (ASIC), Oakland,CA, September 12 - 14, 2018.
Spinei, E., A. Whitehill, A. Fried, M. Tiefengraber, T. Knepp, S. Herndon, J. Herman, M. Muller, N. Abuhassan, A. Cede, D. Richter, J. Walega, J. Crawford, Jim Szykman, L. Valin, D. Williams, R. Long, R. Swap, Y. Lee, N. Nowak, AND B. Poche. The first evaluation of formaldehyde column observations by improved Pandora spectrometers during the KORUS-AQ field study. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, 11(9):4943-4961, (2018). https://doi.org/10.5194/amt-11-4943-2018
2017
Knepp, T., Jim Szykman, R. Long, R. Duvall, J. Krug, M. Beaver, K. Cavender, K. Kronmiller, M. Wheeler, R. Delgado, R. Hoff, T. Berkoff, E. Olson, R. Clark, D. Wolfe, D. Van Gilst, AND D. Neil. Assessment of mixed-layer height estimation from single-wavelength ceilometer profiles. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, 10:3963-3983, (2017).
2016
Long, R., M. Beaver, R. Duvall, Jim Szykman, S. Kaushik, K. Kronmiller, M. Wheeler, S. Garvey, AND J. Crawford. Evaluation and Comparison of Methods for Measuring Ozone and NO2 Concentrations in Ambient Air during DISCOVER-AQ. EM Magazine. Air and Waste Management Association, Pittsburgh, PA, , 1-11, (2016).
Crawford, J., J. Al-Saadi, G. Pierce, R. Long, Jim Szykman, J. Leitch, C. Nowlan, J. Herman, AND A. Weinheimer. Multi-perspective observations of NO2 over the Denver area during DISCOVER-AQ: Insights for future monitoring. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , August, (2016).
Nowlan, C., X. Lu, J. Leitch, K. Chance, G. González Abad, C. Lu, P. Zoogman, J. Cole, T. Delker, W. Good, F. Murcray, L. Ruppert, D. Soo, M. Follette-Cook, S. Janz, M. Kowalewski, C. Loughner, K. Pickering, J. Herman, M. Beaver, R. Long, Jim Szykman, L. Judd, P. Kelley, W. Luke, X. Ren, AND J. Al-Saadi. Nitrogen dioxide observations from the Geostationary Trace gas and Aerosol Sensor Optimization (GeoTASO) airborne instrument: Retrieval algorithm and measurements during DISCOVER-AQ Texas 2013. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, 9(6):2647-2668, (2016).
Duvall, R., R. Long, M. Beaver, K. Kronmillwe, M. Wheeler, Jim Szykman, M. Silverman, AND J. Crawford. Performance Evaluation and Community Application of Low-Cost Sensors for Ozone and Nitrogen Dioxide. Sensors. MDPI, Basel, Switzerland, 16(10):1698, (2016).
Hagler, G., R. Williams, E. Thoma, Bill Mitchell, R. Duvall, R. Long, B. Gullett, A. Holder, T. Barzyk, Sue Kimbrough, S. Feinberg, A. Kaufman, AND H. Brantley. Rapid evolution of air pollution sensor technology for research and consumer product applications. Presented at WISeNet workshop, Durham, NC, May 09, 2016.
Hagler, G., R. Williams, E. Thoma, Bill Mitchell, R. Duvall, R. Long, B. Gullett, A. Holder, T. Barzyk, Sue Kimbrough, S. Feinberg, A. Kaufman, AND H. Brantley. Rapid evolution of air sensor technologies. Presented at Wireless Intelligent Sensor Network workshop, Durham, NC, May 09, 2016.
Szykman, Jim, R. Long, R. Duvall, T. Knepp, M. Beaver, K. Cavender, R. Clarke, AND E. Olsen. The use of LIDAR Technology for Measuring Mixing Heights under the Photochemical Assessment Monitoring Program; leveraging research under the joint DISCOVER-AQ/FRAPPÉ Missions. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 1-7, (2016).
2015
Long, R., M. Beaver, R. Duvall, EricS Hall, S. Kaushik, K. Kronmiller, M. Wheeler, AND S. Garvey. Evaluation and Comparison of Chemiluminescence and UV Photometric Methods for Measuring Ozone Concentrations in Ambient Air. In Proceedings, 2015 (108th) A&WMA Annual Conference, Raleigh, NC, June 22 - 25, 2015. Air and Waste Management Association, Pittsburgh, PA, 546, (2015).
Hagler, G., R. Williams, E. Thoma, B. Gullett, R. Long, M. Beaver, R. Duvall, Bill Mitchell, B. Squier, W. Jiao, AND X. Zhou. Next-generation air monitoring – an overview of EPA research to develop real-time instrumentation packages for stationary and mobile monitoring. Presented at Duke University's Wireless Intelligent Sensor Network workshop, Durham, NC, June 24, 2015.
Williams, R., R. Long, M. Beaver, R. Duvall, G. Hagler, Sue Kimbrough, E. Thoma, Bill Mitchell, W. Jiao, A. Kaufman, J. Rice, T. Hanley, AND S. Garvey. Sensor Technology and Performance Characteristics. AWMA 2015 Meeting, Raleigh, NC, June 22, 2015.
2014
Williams, R., D. Costa, A. Brown, A. Kaufman, D. Buchbinder, G. Hagler, E. Thoma, Bill Mitchell, B. Gullett, W. Jiao, Vasu Kilaru, R. Long, M. Beaver, R. Duvall, P. Solomon, K. Leovic, E. Smith, L. Stanek, Tim Watkins, P. Preuss, S. Katz, G. Robarge, E. Snyder, B. Sharpe, AND S. Garvey. #2) Sensor Technology-State of the Science. Webinar Presentation - Sensor Technology-State of the Science, Research Triangle Park, NC, July 08, 2014.
Beaver, M., R. Long, K. Kronmiller, R. Duvall, S. Kaushik, T. Morphy, AND P. King. Ambient intercomparison of direct and indirect methods for ambient nitrogen dioxide. National Ambient Monitoring Conference, Atlanta, GA, August 11 - 14, 2014.
Beaver, M., R. Long, Jim Szykman, R. Duvall, K. Baker, J. Kelly, A. Weinheimer, D. Knapp, D. Montzka, S. Pusede, AND R. Cohen. DISCOVER-AQ SJV Surface Measurements and Initial Comparisons with Photochemical Model Simulations. CMAS Conference, Chapel Hill, NC, October 27 - 29, 2014.
Knepp, T., M. Pippin, J. Crawford, Jim Szykman, R. Long, L. Cowen, A. Cede, N. Abuhassan, J. Herman, R. Delgado, J. Compton, T. Berkoff, J. Fishman, D. Martins, R. Stauffer, A. Thompson, A. Weinheimer, D. Knapp, D. Montzka, D. Lenschow, AND D. Neil. Estimating Surface NO2 and SO2 Mixing Ratios from Fast-Response Total Column Observations and Potential Application to Geostationary Missions. JOURNAL OF ATMOSPHERIC CHEMISTRY. Springer, New York, NY, 0(0):1-26, (2014).
Duvall, R., R. Long, M. Beaver, EricS Hall, J. Szykman, AND S. Kaushik. Evaluation of small sensor technology for criteria air pollutants at ground-based sites and a citizen science network. National Ambient Air Monitoring Conference, Atlanta, GA, August 11 - 14, 2014.
Hall, E., S. Kaushik, R. Vanderpool, R. Duvall, M. Beaver, R. Long, AND P. Solomon. Integrating Sensor Monitoring Technology into the Current Air Pollution Regulatory Support Paradigm: Practical Considerations. American Journal of Environmental Engineering. Scientific & Academic Publishing, Rosemead, CA, 4(6):147-154, (2014).
Williams, R., Tim Watkins, AND R. Long. Low Cost Sensor Calibration Options. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 10-15, (2014).
Hagler, G., R. Williams, E. Thoma, B. Gullett, R. Long, M. Beaver, R. Duvall, Bill Mitchell, B. Squier, W. Jiao, AND X. Zhou. Next-generation air monitoring – an overview of EPA research to develop real-time instrumentation packages for stationary and mobile monitoring. Presented at 2nd Annual Workshop on Wireless Sensor Networks (WISEnet), Durham, NC, June 09, 2014 - March 10, 2016.
Williams, R., R. Long, M. Beaver, R. Duvall, Sue Kimbrough, E. Thoma, Bill Mitchell, J. Rice, T. Hanley, AND S. Garvey. Observations from Laboratory and Field-based Evaluations of Select Low Cost Sensor Performance. 2014 International Society of Exposure Science, Cincinnati, OH, October 12 - 16, 2014.
Long, R., E. Hall, M. Beaver, R. Duvall, S. Kaushik, K. Kronmiller, M. Wheeler, S. Garvey, Z. Drake, AND F. McElroy. Performance of the Proposed New Federal Reference Methods for Measuring Ozone Concentrations in Ambient Air. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/432 (NTIS PB2015-101240), 2014.
Long, R., M. Beaver, R. Williams, K. Kronmiller, AND S. Garvey. Procedures and Concepts of EPA's Ongoing Sensor Evaluation Efforts. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 8-9, (2014).
Long, R., M. Beaver, R. Duvall, EricS Hall, AND S. Kaushik. Review of Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence. CASAC AMMS Teleconference on Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescene, Research Triangle Park, NC, April 03, 2014.
Long, R., M. Beaver, R. Duvall, EricS Hall, AND S. Kaushik. Review of Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence:Supplemental Material for CASAC AMMS. CASAC AMMS Teleconference on Federal Reference Method for Ozone, Washington, DC, June 12, 2014.
Williams, R., R. Long, M. Beaver, A. Kaufman, F. Zeiger, M. Heimbinder, I. Hang, R. Yap, B. Acharya, B. Ginwald, K. Kupcho, S. Robinson, O. Zaouak, B. Aubert, M. Hannigan, R. Piedrahita, N. Masson, B. Moran, M. Rook, P. Heppner, C. Cogar, N. Nikzad, AND W. Griswold. Sensor Evaluation Report. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-14/143 (NTIS PB2015-100611), 2014.
Williams, R., R. Long, M. Beaver, G. Hagler, Sue Kimbrough, E. Thoma, Bill Mitchell, T. Hanley, J. Rice, S. Garvey, B. Sharpe, W. Jiao, AND K. Kronmiller. Sensor Technology Performance Characteristics- Field and Laboratory Observations. 2014 Air Sensors Workshop, Research Triangle Park, NC, June 09 - 10, 2014.
Williams, R., R. Long, M. Beaver, A. Kaufman, T. Hanley, J. Rice, AND S. Garvey. The State of Sensor Technology and Air Quality Monitoring. Presented at National Environmental Monitoring Conference, Washington, DC, August 04 - 08, 2014.
2013
Beaver, M., K. Kronmiller, R. Duvall, S. Kaushik, T. Morphy, P. King, AND R. Long. Direct and Indirect Methods for the Measurement of Ambient Nitrogen Dioxide. Presented at AWMA Measurement Technologies meeting, Sacramento, CA, November 19 - 21, 2013.
Beaver, M., K. Kronmiller, R. Duvall, S. Kaushik, T. Morphy, P. King, AND R. Long. Direct and Indirect Methods for the Measurement of Nitrogen Dioxide (NO2). Presented at AWMA Measurements Meeting, Sacramento, CA, November 20, 2013.
2012
HALL, ERICS, M. BEAVER, R. W. LONG, AND R. W. VANDERPOOL. EPA's Reference and Equivalent Supporting NAAQS Implementation through Methods Research Program: Research, Development, and Analysis. EM: AIR AND WASTE MANAGEMENT ASSOCIATION'S MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, 5(May 2012):8-12, (2012).
2011
CHEN, F., R. W. VANDERPOOL, R. W. WILLIAMS, F. DIMMICK, B. GROVER, R. W. LONG, AND R. MURDOCH. Field Evaluation of Portable and Central Site PM Samplers Emphasizing Additive and Differential Mass Concentration Estimates. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 45(26):4522-4527, (2011).
2006
LONG, R. W., M. S. LANDIS, K. KRONMILLER, B. D. GROVER, D. J. EATOUGH, R. AL-HORR, AND R. K. STEVENS. (AAAR) - SEMI-CONTINUOUS DETERMINATION OF WATER-SOLUBLE PARTICULATE COMPONENTS AND THEIR GASEOUS PRECURSORS: LABORATORY AND FIELD EVALUATION OF INSTRUMENTATION BASED ON WET WALL DENUDER AND ION CHROMATOGRAPHY TECHNOLOGY . Presented at International Aerosol Conference (AAAR), St. Paul, MN, September 10 - 15, 2006.
GLOVER, B. D., D. J. EATOUGH, W. R. WOOLWINE, J. CANNON, N. L. EATOUGH, R. W. LONG, AND R. A. CARY. CLOSURE BETWEEN SEMI-CONTINUOUS MEASUREMENT OF PM 2.5 MASS AND COMPOSITION. Presented at 99th Air & Waste Management Association Annual Conference, New Orleans, LA, June 20 - 23, 2006.
LONG, R. W., M. S. LANDIS, K. KRONMILLER, B. D. GROVER, D. J. EATOUGH, R. K. STEVENS, AND R. AL-HORR. SEMI-CONTINUOUS DETERMINATION OF WATER-SOLUBLE PARTICULATE COMPONENTS AND THEIR GASEOUS PRECURSORS: LABORATORY AND FIELD EVALUATION OF INSTRUMENTATION BASED ON WET WALL DENUDER AND ION CHROMATOGRAPHY TECHNOLOGY. Presented at AWMA Symposium, Durham, NC, May 09 - 11, 2006.
2005
LONG, R. W. LABORATORY AND FIELD EVALUATION OF INSTRUMENTATION FOR THE SEMI-CONTINUOUS DETERMINATION OF WATER-SOLUBLE PARTICULATE COMPONENTS AND GASES. Presented at University of South Florida, Tampa, FL, May 18, 2005.
WILSON, W. E., B. D. GROVER, N. L. EATOUGH, D. J. EATOUGH, AND R. W. LONG. SEMI-VOLATILE SECONDARY AEROSOLS IN URBAN ATMOSPHERES: MEETING A MEASURED CHALLENGE. Presented at American Association of Aerosol Research 2005, Atlanta, GA, February 07 - 11, 2005.