Dr. Bret Schichtel
Dr. Bret Schichtel
Affiliated Scientist, NPS
Office: CIRA, Rm 102
Phone: (970) 491-8581
Fax: (970) 491-8598
Email:
Mailing Address:
Bret Schichtel
Cooperative Institute for Research in the Atmosphere
Colorado State University
1375 Campus Delivery
Fort Collins, CO 80523-1375
Selected Publications
  • Hand, J. L., Ashbaugh, L. L., Malm, W. C., Pitchford, M. L., Schichtel, B. A., White, W. H., 2010: Spatial and seasonal variability in urban and rural PM2.5 speciated aerosol composition data from the IMPROVE and CSN networks, the American Association for Aerosol Research international specialty conference: Air Pollution and Health: Bridging the Gap from Sources to Health Outcomes.March 22-26, San Diego, CA
  • Chand, D., Huddleson, J.M., Malm, W. C., McClure, S. E., Moore, C.T., Schichtel, B. A., Wood, R., 2010: Transpacific transport of Eastern Asian aerosols based on the climatology of MODIS observations, .,
  • Levin, E. J. T., Beem, K. B., Carrico, C. M., Collett, J. L. Jr., Day, D. E., Kreidenweis, S. M., Malm, W. C., Schichtel, B. A., Schurman, M., 2009: Aerosol number and volume concentrations during the second Rocky Mountain Atmospheric Nitrogen and Sulfur study (RoMANS 2), The American Associiation of Aerosol Research 28th Annual Conference.October 26-30, Minneapolis, MN
  • Pitchford, M. L., Malm, W. C., Poirot, R. L., Schichtel, B. A., 2009: Characterization of the winter Midwestern particulate ntirate bulge, Journal of the Air & Waste Management Association, vol. 59, 1061-1069
  • Gebhart, K. A., Barna, M. G., Malm, W. C., Rodriguez, M. A., Schichtel, B. A., 2009: Comparison of MM5 winds to Estes Park profiler and MM5 Hysplit back trajectories for source attribution, Ad-Hoc Meteorological Modeling Group Meeting.June 25-26, 2009, National Center for Atmospheric Research, Boulder, CO
  • Beem, K. B., Carrico, C. M., Collett, J. L. Jr., Day, D. E., Hand, J. L., Kreidenweis, S. M., Lee, T. E., Levin, E. J. T., Malm, W. C., McMeeking, G. R., Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2009: Deopsition of reactive nitrogen during the Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study, Environmental Pollution, vol. , 158, 862-872
  • Schichtel, B. A., Collett, J. L. Jr., Holden, A. S., Malm, W. C., Patterson, L. A., Sullivan, A. P., 2009: Estimating the contribution of smoke and its source regions to fine particulate matter using a hybrid receptor model, the American Association of Aerosol Research 28th Annual Conference.October 26-30, Minneapolis, MN
  • Chand, D., Huddleson, J.M., Malm, W. C., McClure, S. E., Moore, C.T., Schichtel, B. A., 2009: Inter-annual variation in NO2 over the United States, American Geophysical Union Fall Meeting.December, San Francisco, CA
  • Malm, W. C., Carrico, C. M., Collett, J. L. Jr., Hao, W. M., Kreidenweis, S. M., Moosmüller, H. S., Schichtel, B. A., 2009: Measurements needed to understand the role of biomass burning within the regulatory framework of the Environmental Protection Agency and the federal land managing community, Invited Presentation at the American Association for Aerosol Research 28th Annual Conference.October 26-30, Minneapolis, MN
  • Malm, W. C., Barna, M. G., Beem, K. B., Carrico, C. M., Collett, J. L. Jr., Day, D. E., Gebhart, K. A., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Levin, E. J. T., McDade, C. E., McMeeking, G. R., Molenar, J. V., Raja, S., Rodriguez, M. A., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2009: RoMANS: Rocky Mountain Atmospheric Nitrogen and Sulfur Study Report, .,
  • Beem, K. B., Carrico, C. M., Collett, J. L. Jr., Day, D. E., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Mack, L., Malm, W. C., McMeeking, G. R., Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2008: A spatial analysis of precipitation chemistry coupled with aerosol and gas concentrations during the Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) Study, AGU Fall 2008 Conference.December 15-19, 2008, San Francisco, CA
  • Pitchford, M. L., Malm, W. C., Poirot, R. L., Schichtel, B. A., 2008: Characterization of the winter midwestern particulate nitrate bulge, Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Patterson, L. A., Collett, J. L. Jr., Holden, A. S., Kreidenweis, S. M., Malm, W. C., Schichtel, B. A., Sullivan, A. P., 2008: Development of a wildland fire smoke marker emissions map for the contiguous United States, American Geophysical Union (AGU) Fall 2008 Meeting.December 15-19, 2008, San Francisco, CA
  • Holden, A. S., Bench, G., Collett, J. L. Jr., Kreidenweis, S. M., Malm, W. C., Patterson, L. A., Schichtel, B. A., Sullivan, A. P., 2008: Estimating contributions of primary biomass burning to fine particulates in ambient aerosol in the western United States, American Association for Aerosol Research 27th Annual Conference.October 20-24, 2008, Orlando, FL
  • Schichtel, B. A., Collett, J. L. Jr., Holden, A. S., Malm, W. C., Patterson, L. A., Sullivan, A. P., 2008: Estimating the contribution of fire types to PM2.5 and haze using a hybrid receptor model, BlueSky Modeling Framework Stakeholders Annual Meeting.May 20-22, 2008, Boise, ID
  • Schichtel, B. A., Collett, J. L. Jr., Holden, A. S., Malm, W. C., Patterson, L. A., Sullivan, A. P., 2008: Estimating the contribution of smoke to fine particulate matter using a hybrid-receptor model, Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Schichtel, B. A., Bench, G., Chow, J. C., Fallon, S., Malm, W. C., McDade, C. E., Watson, J. G., 2008: Fossil and contemporary fine particulate carbon fractions at 12 rural and urban sites in the United States, Journal of Geophysical Research, vol. 113,
  • Schichtel, B. A., Malm, W. C., Moore, T., 2008: National Park Service's needs for an operational biomass burning emission inventory, First Workshop on a Cooperative Operational Biomass Burning Emissions Committee.December 2-3, 2008, University of Maryland, College Park, MD
  • Collett, J. L. Jr., Beem, K. B., Carrico, C. M., Day, D. E., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Mack, L., Malm, W. C., McMeeking, G. R., Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2008: Nitrogen deposition budgets for Rocky Mountain National Park, AGU Fall 2008 Conference.December 15-19, 2008, San Francisco, CA
  • Collett, J. L. Jr., Beem, K. B., Carrico, C. M., Day, D. E., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Levin, E. J. T., Malm, W. C., McMeeking, G. R., Raja, S., Scheandner, F., Schichtel, B. A., Sullivan, A. P., Taylor, C., 2008: Observations of airborne pollutants and deposition during the 2006 Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study, American Chemical Society Joint 63rd Northwest/21st Rocky Mountain Regional Meeting .June 15-18, 2008, Park City, UT
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Rodriguez, M. A., Schichtel, B. A., 2008: Predicting total nitrogen deposition at national parks, The Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Gebhart, K. A., Barna, M. G., Carrico, C. M., Collett, J. L. Jr., Hand, J. L., Lee, Taehyoung (T.), Malm, W. C., Rodriguez, M. A., Schichtel, B. A., Sullivan, A. P., 2008: Preliminary back trajectory-based source assessments for airborne particulate matter and deposited ions at Rocky Mountain National Park, CO, Air and Waste Management Association Specialty Conference on Aerosol and Atmospheric Optics: Visual Air Quality and Radiation.April 28-May 2, 2008, Moab, UT
  • Rodriguez, M. A., Barna, M. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2008: Regional air quality model simulation of the Rocky Mountain Atmospheric Nitrogen and Sulfur study: Preliminary results and analysis, Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Schichtel, B. A., 2008: Rocky Mountain Atmospheric Nitrogen and Sulfur study (RoMANS), Colorado Air Quality Control Commission Meeting.October 16, 2008, Denver, CO
  • Schichtel, B. A., Barna, M. G., Beem, K. B., Carrico, C. M., Collett, J. L. Jr., Day, D. E., Gebhart, K. A., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Mack, L., Malm, W. C., McMeeking, G. R., Raja, S., Rodriguez, M. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2008: Rocky Mountain Atmospheric Nitrogen and Sulfur study (RoMANS): Current results and status, Colorado Air Quality Control Commission Meeting.October 17, 2008, Denver, CO
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Rodriguez, M. A., Schichtel, B. A., 2008: Simulating nitrogen tracers from regional sources for RoMANS, The Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Schichtel, B. A., Barna, M. G., Collett, J. L. Jr., Gebhart, K. A., Kreidenweis, S. M., Malm, W. C., 2008: Source apportionment of sulfur and nitrogen species at Rocky Mountain National Park using modeled conservative tracer releases and tracers of opportunity, American Geophysical Union Fall 2008 Meeting.December 15-19, 2008, San Francisco, CA
  • Malm, W. C., Barna, M. G., Carrico, C. M., Collett, J. L. Jr., Gebhart, K. A., Schichtel, B. A., 2008: Source apportionment of sulfur and nitrogen species at Rocky Mountain National Park using modeled conservative tracer releases and tracers of opportunity, American Geophysical Union, Fall Meeting.December 15-19, 2008, San Francisco, CA
  • Malm, W. C., Barna, M. G., Carrico, C. M., Collett, J. L. Jr., Gebhart, K. A., Schichtel, B. A., 2008: Source apportionment of sulfur and nitrogen species at Rocky Mountain National Park using modeled conservative tracer releases and tracers of opportunity , Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Malm, W. C., Barna, M. G., Collett, J. L. Jr., Gebhart, K. A., Kreidenweis, S. M., Schichtel, B. A., 2008: Source apportionment of sulfur and nitrogen species at Rocky Mountain National Park using modeled conservative tracer releases and tracers of opportunity , National Atmospheric Deposition Program Annual Meeting.October 14-16, 2008, Madison, WI
  • Schichtel, B. A., Chow, J. C., Hand, J. L., Malm, W. C., Watson, J. G., White, W. H., 2008: Spatial and temporal trends in fine particulate carbon in the United States, Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Hand, J. L., Ashbaugh, L. L., DeBell, L., Malm, W. C., McDade, C. E., Pitchford, M. L., Schichtel, B. A., 2008: Spatial varibility in the seasonal distribution of PM2.5 speciated aerosol composition data from the IMPROVE and STN networks, Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • McClure, S. E., Ames, R. B., Fox, D. G., Moore, T., Schichtel, B. A., 2008: VIEWS/TSS: An integrated systems solution for air quality and regional haze planning, Air & Waste Management Association Visibility Specialty Conference.April 28-May 2, 2008, Moab, UT
  • Carrico, C. M., Barna, M. G., Beem, K. B., Collett, J. L. Jr., Day, D. E., Gebhart, K. A., Gorin, C. A., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., McMeeking, G. R., Raja, S., Rodriguez, M. A., Schichtel, B. A., Sullivan, A. P., 2007: Air quality observations during the 2006 Rocky Mountain Atmospheric Nitrogen and Sulfur Study (RoMANS), The Rocky Mountain States Section Air and Waste Management Conference.May 17, 2007, Golden, CO
  • Malm, W. C., Barna, M. G., Carrico, C. M., Collett, J. L. Jr., Day, D. E., Gebhart, K. A., Gorin, C. A., Kreidenweis, S. M., Lee, Taehyoung (T.), Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., 2007: An overview of the Rocky Mountain Atmospheric Nitrogen and Sulfur Study (RoMANS), Air & Waste Management Association 100th Annual Meeting.June 26-29, 2007, Pittsburgh, PA
  • Holden, A. S., Bench, G., Collett, J. L. Jr., Kreidenweis, S. M., Malm, W. C., Schichtel, B. A., Sullivan, A. P., 2007: Application of anion exchange chromatography with pulsed amperometric detection for measurement of levoglucosan in ambient aerosol samples, 26th American Association for Aerosol Research Annual Conference.September 24-28, 2007, Reno, NV
  • Schichtel, B. A., Collett, J. L. Jr., Holden, A. S., Malm, W. C., Sullivan, A. P., 2007: Contribution of smoke to PM2.5 and haze: Development of smoke source profiles and routine source apportionment tools, International Biomass Smoke Health Effects (IBSHE) Conference.August 21-22, 2007, University of Montana, Missoula, MT
  • Schichtel, B. A., Collett, J. L. Jr., Holden, A. S., Kreidenweis, S. M., Malm, W. C., Sullivan, A. P., 2007: Contribution of smoke to PM2.5 and haze: Development of smoke source profiles and routine source apportionment tools , The 2007 IMPROVE Steering Committee Meeting.September 5-6, 2007, Durango, CO
  • Malm, W. C., Bench, G., Chow, J. C., McDade, C. E., Schichtel, B. A., Watson, J. G., 2007: Fossil vs. contemporary carbon at 12 rural and urban sites in the United States, Mid-Atlantic/Northeast Visibility Union(MANE-VU) Regional Planning Organization (RPO) Science Meeting.July 10-11, 2007, Baltimore, MD
  • Schichtel, B. A., 2007: Interagency Monitoring of Protected Visual Environments (IMPROVE) monitoring program, Environmental Protection Agency's U.S.-Canada Visibility Workshop.October 10-13, 2007, Research Triangle Park, NC
  • Schichtel, B. A., Malm, W. C., Pitchford, M. L., 2007: Introduction to Visibility Science, Environmental Protection Agency U.S.-Canada Visibility Workshop.October 2007, Research Triangle Park, NC
  • Carrico, C. M., Collett, J. L. Jr., Day, D. E., DeMott, P., Gebhart, K. A., Hand, J. L., Holden, A. S., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., McMeeking, G. R., Petters, M. D., Prenni, A. J., Schichtel, B. A., Sullivan, A. P., 2007: Investigation of the properties of smoke from wildland fires: The relationship to visual impacts of smoke, The International Association of Wildland Fires Human Dimensions Conference.October 23-25, 2007, Fort Collins, CO
  • Collett, J. L. Jr., Beem, K. B., Carrico, C. M., Day, D. E., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., McMeeking, G. R., Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2007: Nitrogen emission, transport, and deposition in Colorado, The AGU Fall Meeting.December 10-14, 2007, San Francisco, CA
  • Collett, J. L. Jr., Beem, K. B., Carrico, C. M., Day, D. E., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., McMeeking, G. R., Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2007: Nitrogen transport and deposition during the Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study, The AGU Fall Meeting.December 10-14, 2007, San Francisco, CA
  • Collett, J. L. Jr., Beem, K. B., Carrico, C. M., Day, D. E., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., McMeeking, G. R., Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2007: Nitrogen transport and deposition during the Rocky Mountain Airborne Nitrogen and Sulfur (RoMANS) study, The 2007 American Geophysical Union Fall Meeting.December 10-14, 2007, San Francisco, CA
  • Collett, J. L. Jr., Beem, K. B., Carrico, C. M., Day, D. E., Gorin, C. A., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., McMeeking, G. R., Raja, S., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., 2007: Observations of airborne pollutants and deposition during the 2006 Rocky Mountain Airborne Nitrogen and Sulfur Study (RoMANS), The National Atmospheric Deposition Program (NADP) Meeting.September 10-12, 2007, Boulder, CO
  • Bench, G., Fallon, S., Malm, W. C., McDade, C. E., Schichtel, B. A., 2007: Relative contributions of fossil and contemporary carbon sources to PM2.5 aerosols at nine Interagency Monitoring for Proection of Visual Environments (IMPROVE) network sites, Journal of Geophysical Research, vol. 112,
  • Pitchford, M. L., Hand, J. L., Kumar, N., Lowenthal, D. H., Malm, W. C., Schichtel, B. A., 2007: Revised algorithm for estimating light extinction from IMPROVE particle speciation data, Journal of the Air & Waste Management Association , vol. 57, 1326-1336
  • Morris, K., Blett, T. , Collett, J. L. Jr., Gorin, C. A., Malm, W. C., Porter, E., Schichtel, B. A., 2007: Science informing policy: Implementing a critical load for Rocky Mountain National Park, The George Wright Society Biennial Conference.April 16-20, 2007, St. Paul, MN
  • Carrico, C. M., Barna, M. G., Beem, K. B., Collett, J. L. Jr., Day, D. E., Gebhart, K. A., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., McMeeking, G. R., Raja, S., Rodriguez, M. A., Schichtel, B. A., Schwandner, F. M., Sullivan, A. P., Taylor, C., 2007: The Rocky Mountain Atmospheric Nitrogen and Sulfur (RoMANS) Study of 2006, The Improve Newsletter, vol. ,
  • Malm, W. C., Collett, J. L. Jr., Schichtel, B. A., 2007: What modifications in the national deposition monitoring networks are required to be able to measure and source apportions representations of all reactive nitrogen species?, The NADP Conference.September 10-12, 2007, Boulder, CO
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Knipping, E. M., Malm, W. C., 2006: A hybrid source apportionment model integrating measured data and air quality model results, Journal of Geophysical Research, vol. 111,
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Malm, W. C., 2006: Association of airmass transport patterns and particulate sulfur concentrations at Big Bend National Park, Texas, Atmospheric Environment, vol. 40, 992-1006
  • Schichtel, B. A., Malm, W. C., Pitchford, M. L., 2006: Critique of "Precipitation in light extinction reconstruction" by P.A. Ryan, Journal of the Air & Waste Management Association, vol. 56, 539-546
  • Ames, R. B., Fox, D. G., McClure, S. E., Schichtel, B. A., 2006: Examples of web-based reporting and analysis products from VIEWS and the WRAP TSS, Air & Waste Management Association Annual Conference & Exhibition.June 20-23, 2006, New Orleans, Louisiana
  • Collett, J. L. Jr., Carrico, C. M., Day, D. E., Gebhart, K. A., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., Raja, S., Schichtel, B. A., Xiao-Ying, Y., 2006: Findings from the 2005 Rocky Mountain National Park Pilot Study, .,
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Rodriguez, M. A., 2006: Integrating air quality data and modeling results to refine source appportionment estimates (poster), CIRA Science Symposium.May 16-17, 2006, Fort Collins, CO
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2006: Modeling regional sulfate during the BRAVO study: Part 1. Base emissions simulation and performance evaluation, Atmospheric Environment, vol. 40, 2436-2448
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2006: Modeling regional sulfate during the BRAVO study: Part 2. Emission sensitivity simulations and source apportionment, Atmospheric Environment, vol. 40, 2423-2435
  • Collett, J. L. Jr., Carrico, C. M., Day, D. E., Gebhart, K. A., Hand, J. L., Kreidenweis, S. M., Lee, Taehyoung (T.), Malm, W. C., Raja, S., Schichtel, B. A., Xiao-Ying, Y., 2006: Preliminary report of findings from the 2005 Rocky Mountain National Park Pilot Study, .,
  • Gebhart, K. A., Barna, M. G., Malm, W. C., Schichtel, B. A., 2006: Qualitative back-trajectory apportionment of sources of particulate sulfate at Big Bend National Park, TX, Atmospheric Environment, vol. 40, 2823-2834
  • Gebhart, K. A., Barna, M. G., Malm, W. C., Schichtel, B. A., 2006: Quantitative back-trajectory apportionment of sources of particulate sulfate at Big Bend National Park, TX, Atmospheric Environment, vol. 40, 2823-2834
  • Rodriguez, M. A., Barna, M. G., Gebhart, K. A., Schichtel, B. A., 2006: Regional modeling using CAMx: Evaluation of the air quality in the western national parks, CIRA Science Symposium.May 16-17, 2006, Fort Collins, CO
  • Barna, M. G., Gebhart, K. A., Rodriguez, M. A., Schichtel, B. A., 2006: Simulating sulfur and nitrogen deposition at western national parks, 99th Air & Waste Management Association Annual Conference.June 20-23, 2006, New Orleans, LA
  • Rodriguez, M. A., Barna, M. G., Schichtel, B. A., 2006: Using CAMx to model the potential impacts of a proposed power plant in the Four Corners region, 99th Air & Waste Management Association Annual Conference.June 20-23, 2006, New Orleans, LA
  • Schichtel, B. A., 2005: Cause of haze at Big Bend National Park, Texas: Results from the BRAVO study
  • Gebhart, K. A., Barna, M. G., Schichtel, B. A., 2005: Directional biases in back trajectories caused by model and input data, Journal of the Air & Waste Management Association, vol. 55, 1649-1662
  • Barna, M. G., Gebhart, K. A., Rodriguez, M. A., Schichtel, B. A., 2005: Evaluating the linearity of sulfate formation in response to change in sulfur dioxide emissions within a regional air quality model, NOAA/EPA Golden Jubilee Symposium on Air Qualtiy Modeling and Its Applications.2005, Durham, NC
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Malm, W. C., 2005: Evaluation of a Eulerian and Lagrangian air quality model using perfluorocarbon tracers released in Texas for the BRAVO haze study, Atmoospheric Environment, vol. 39, 7044-7062
  • Malm, W. C., Ashbaugh, L. L., McDade, C. E., Pitchford, M. L., Schichtel, B. A., 2005: Fine and coarse particle speciation at selected locations in the continental United States, 98th Annual Air and Waste Management Association Conference.2005, Minneapolis, MN
  • Malm, W. C., Carrico, C. M., Carrillo, J., Collett, J. L. Jr., Day, D. E., Kreidenweis, S. M., Lee, Taehyoung (T.), McMeeking, G. R., Schichtel, B. A., 2005: Intercomparison and closure calculations using measurements of aerosol species and optical properties during the Yosemite Aerosol Characterization Study, Journal of Geophysical Research, vol. 110,
  • DeBell, L., Ashbaugh, L. L., Fox, D. G., Hyslop, N., Malm, W. C., McDade, C. E., Pitchford, M. L., Schichtel, B. A., 2005: Introduction to the IMPROVE program's new interactive web-based data validation tools, 24th Annual National Conference on Managing Environmental Quality Systems.2005, San Diego, CA
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Knipping, E. M., Malm, W. C., Pitchford, M. L., Tombach, I. H., 2005: Reconciliation and interpretation of Big Bend National Park particulate sulfur source apportionment: Results from the Big Bend Regional Aerosol and Visibility Observational Study: Part I, Journal of the Air & Waste Management Association, vol. 55, 1709-1725
  • Pitchford, M. L., Barna, M. G., Gebhart, K. A., Knipping, E. M., Malm, W. C., Schichtel, B. A., Tombach, I. H., 2005: Reconciliation and interpretation of the Big Bend National Park light extinction source apportionment: Results from the Big Bend Regional Aerosol and Visibility Observational study: Part II, Journal of the Air & Waste Management Association, vol. 55, 1726-1732
  • Ames, R. B., Fox, D. G., McClure, S. E., Schichtel, B. A., 2005: The Visibility Information Exchange Web System (VIEWS), Air Toxics, and IMPROVE websites: Database driven internet sites for access, inter-comparison, and on-line analysis of air quality data, Air & Waste Management Association Specialty Conference: Environmental Data Analysis: Assessing Health and Environmental Impacts, Developing Policy and Achieving Regulatory Compliance.October 4-5, 2005, Oak Brook, Ilinois
  • Malm, W. C., Ashbaugh, L. L., McDade, C. E., Pitchford, M. L., Schichtel, B. A., 2004: An update of spatial and monthly trends in speciated fine particle concentration in the United States, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Pitchford, M. L., Barna, M. G., Gebhart, K. A., Green, M. C., Knipping, E. M., Kumar, N., Malm, W. C., Pun, B., Schichtel, B. A., Seigneur, C., Tombach, I. H., 2004: Big Bend Regional Aerosol and Visibility Observational (BRAVO) Study: Official Report
  • Schichtel, B. A., Barna, M. G., Day, D. E., Gebhart, K. A., Kreidenweis, S. M., Malm, W. C., 2004: Big Bend regional aerosol and visibility observational (BRAVO) study results: Air quality data and source attribution analyses results from the National Park Service/Cooperative Institute for Research in the Atmosphere
  • Hansen, J., Bond, T., Cairns, B., Gaeggler, H., Liepert, B., Novakov, T., Schichtel, B. A., 2004: Carbonaceous aerosols in the industrial era, EOS, vol. 85, 241-244
  • Pitchford, M. L., Barna, M. G., Gebhart, K. A., Knipping, E. M., Malm, W. C., Schichtel, B. A., Tombach, I. H., 2004: Causes of haze at Big Bend National Park: Results of the BRAVO study and more, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Malm, W. C., Ashbaugh, L. L., McDade, C. E., Pitchford, M. L., Schichtel, B. A., 2004: Coarse particle speciation at nine locations in the continental United States, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Husar, R. B., Gebhart, K. A., Hoijarvi, K., Kayin, S., Malm, W. C., Poirot, R. L., Schichtel, B. A., 2004: Combineed Aerosol Trajectory Tool, CATT: Status report on tools development and use, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Gebhart, K. A., Barna, M. G., Schichtel, B. A., 2004: Directional biases in back-trajectories due to model and input data, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2004: Evaluation of REMSAD-BRAVO simulation using tracer data and synthesized modeling, Particulate Matter Model Performance Workshop.2004, Research Triangle Park, NC
  • DeBell, L., Ashbaugh, L. L., Fox, D. G., Hyslop, N., Malm, W. C., McDade, C. E., Pitchford, M. L., Schichtel, B. A., 2004: Overview of the IMPROVE network's quality assurance procedures and introduction to our new interactive web-based tools, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Ames, R. B., Fox, D. G., Hand, J. L., Malm, W. C., Schichtel, B. A., 2004: Preliminary apportionments of carbonaceous aerosols to wild fire smoke using long-term records from the IMPROVE network, Electric Utilities Environmental Conference.2004, Tucson, AZ
  • Ames, R. B., Fox, D. G., Malm, W. C., Schichtel, B. A., 2004: Preliminary apportionments of carbonaceous aerosols to wild fire smoke using observations from the IMPROVE network, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Malm, W. C., Pitchford, M. L., 2004: Reconciliation of particulate sulfate source apportionment during the BRAVO study, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2004: Regional simulation of sulfate aerosol for the BRAVO study, Electric Utilities Environmental Conference, Air Quality, Global Climate Change and Renewable Energy.2004, Tucson, AZ
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2004: Simulating sulfate contributions from regional sources at six national parks during the BRAVO study, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Ames, R. B., Fox, D. G., McClure, S. E., Schichtel, B. A., 2004: The Visibility Information Exchange Web System (VIEWS): An update on availalbe datasets and web based tools for data analysis and visualization, Air and Waste Management Association Specialty Conference.October 25-29, 2004, Ashville, NC
  • Hand, J. L., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2004: The contribution of mineral aerosols to visibility estimates in the western U.S. during the Asian dust event of Spring 2001, Electric Utilities Environmental Conference, Air Quality, Global Climate Change and Renewable Energy.2004, Tucson, AZ
  • Barna, M. G., Fox, D. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2003: Assessing the impact of regional pollutant sources on air quality and visibility at Big Bend National Park with REMSAD, 96th Annual AWMA Conference.2003, San Diego, CA
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Malm, W. C., 2003: Assessment of the source receptor relationship at Big Bend, TX, using forward airmass histories, 96th Annual AWMA Conference.2003, San Diego, CA
  • Gebhart, K. A., Barna, M. G., Schichtel, B. A., 2003: Comparison of results of back-trajectory modeling using several combinations of models and input wind fields during the BRAVO study, 96th Annual AWMA Conference.2003, San Diego, CA
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Malm, W. C., 2003: Integrating air quality data and Eulerian modeling results to apportion Big Bend Texas' sulfate among sources in the United States and Mexico, AGU Fall Meeting.2003, San Francisco, CA
  • Barna, M. G., Malm, W. C., Pitchford, M. L., Schichtel, B. A., 2003: Introduction to visibility, Western Regional Air Partnership (WRAP) Tribal Policy and Technical Workshop.2003, Albuquerque, NM
  • Barna, M. G., Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2003: Investigating pollutant sources that contribute sulfate aerosol to Big Bend National Park with the REMSAD air quality model, Presented to the Big Bend National Park management and staff.2003, Big Bend National Park, TX
  • Schichtel, B. A., 2003: Long-term visibility trends in air quality in the national parks
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Malm, W. C., 2003: Source apportionment of particulate sulfur at Big Bend National Park using an inverse modeling technique, Air and Waste Management Association Conference.2003, San Diego, CA
  • Gebhart, K. A., Barna, M. G., Schichtel, B. A., 2003: Source apportionment of sulfate and unique tracers at Big Bend National Park using a back-trajectory receptor model and measurements from the BRAVO study, 96th Annual AWMA Conference.2003, San Diego, CA
  • Malm, W. C., Ashbaugh, L. L., Eldred, R. A., Pitchford, M. L., Schichtel, B. A., 2003: Spatial and monthly trends in speciated fine particle concentration in the United States, Journal of Geophysical Research, vol. 109
  • Malm, W. C., Ashbaugh, L. L., Eldred, R. A., Pitchford, M. L., Schichtel, B. A., 2003: Spatial and temporal trends in particle concentration and extinction in the United States, American Association for Aerosol Research Conference.2003, Pittsburg, PA
  • Malm, W. C., Ashbaugh, L. L., Edlred, R., Pitchford, M. L., Schichtel, B. A., 2003: Spatial and temporal trends in particle concentration in the United States, Air and Waste Management Association Conference.2003, San Diego, CA
  • Schichtel, B. A., Barna, M. G., Gebhart, K. A., Malm, W. C., 2003: Transport patterns during high and low sulfur concentrations at Big Bend, Texas during BRAVO, 96th Annual Air and Waste Management Association Conference.2003, San Diego, CA
  • Malm, W. C., Ames, R. B., Gebhart, K. A., Schichtel, B. A., 2002: A ten-year spatial and temporal trend of sulfate across the United States, J. Geophys. Res., vol. 107, 4626
  • Barna, M. G., Gebhart, K. A., Green, M. C., Schichtel, B. A., 2002: Simulation of the transport and dispersion of perfluorocarbon tracers released in Texas using multiple assimilated meteorological wind fields, AGU Annual Conference.2002, San Francisco, CA
  • Schichtel, B. A., 2002: Spatial and temporal patterns of light absorbing (elemental) carbon in rural areas of the United States, Presentation to the Air Quality Research Subcommittee of the White House Committee on the Environment and Natural Resources (CENR).2002, Washington, DC
  • Schichtel, B. A., Ames, R. B., Engle, M. S., Fox, D. G., Malm, W. C., Pitchford, M. L., Winchester, J. I., 2002: The IMPROVE and WRAP web sites: Supporting better understanding and control of regional haze, 95th Annual Meeting of the Air and Waste Management Association.June 24-28, 2002, Baltimore, MD
  • Gebhart, K. A., Malm, W. C., Schichtel, B. A., 2001: Analysis of several back-trajectory methods for potential use in source apportionment studies for the BRAVO project, Specialty Conference of the Air and Waste Management Association.October 2-5, 2001, Bend, OR
  • Ames, R. B., Fox, D. G., Malm, W. C., Schichtel, B. A., 2001: Apportionment of particle carbon to wildland fires, regional haze and global radiation balance - aerosol measurements and models: Closure, reconciliation, and evaluation, AWMA Specialty Conference.October 2-5, 2001, Bend, OR
  • Husar, R. B., Schichtel, B. A., Tratt, D. M., 2001: Asian dust events of April 1998, J. Geophy. Res., vol. 106, 18317-18330
  • Schichtel, B. A., Gebhart, K. A., Malm, W. C., 2001: Assessment of the source receptor relationship at Big Bend, TX, using forward airmass histories: Methodology and evaluation, AWMA/AGU Regional Haze and Global Radiation Balance Conference.October 2-5, 2001, Bend, OR
  • Schichtel, B. A., Husar, R. B., 2001: Eastern North American transport climatology during high-and low-ozone days, Atmospheric Environment, vol. 35, 1029-1038
  • Gebhart, K. A., Ashbaugh, L. L., Malm, W. C., Schichtel, B. A., 2001: Empirical orthogonal function (EOF) analysis of BRAVO particulate data, International Specialty Conference of the Air and Waste Management Association.October 2-5, 2001, Bend, OR
  • Schichtel, B. A., 2001: Forward airmass history analyses and evaluation of airmass history analyses using tracer analysis and transport visualizations, BRAVO Data Analysis Meeting.2001, Dallas, TX
  • Falke, S. R., Husar, R. B., Schichtel, B. A., 2001: Fusion of SeaWiFS and TOMS satellite data with surface observations and topographic data during extreme aerosol events, J. Air and Waste Management Association, vol. 51, 1579-1585
  • Schichtel, B. A., Falke, S. R., Husar, R. B., Wilson, W. E., 2001: Haze trends over the United States, 1980-1995, Atmospheric Environment, vol. 35, 5205-5210
  • Schichtel, B. A., Ames, R. B., Ashbaugh, L. L., Eldred, R. A., Engle, M. S., Fox, D. G., Malm, W. C., Pitchford, M. L., 2001: IMPROVE aerosol monitoring network and data delivery system, 20th Annual Conference of the American Association for Aerosol Research.October 15-19, 2001, Portland, OR
  • Schichtel, B. A., Fox, D. G., 2001: IMPROVE and WRAP launch new websites, CIRA Newsletter, vol. 15, 9-11
  • Husar, R. B., Falke, S. R., Schichtel, B. A., 2001: MODELS3-IMPROVE-PM/FRM: Comparison of time-averaged concentrations
  • Schichtel, B. A., Gebhart, K. A., 2001: Source oriented regional scale transport analyses to Big Bend, Texas, during the Big Bend Regional Aerosol and Visibility study, International Specialty Conference of the Air and Waste Management Association.October 2-5, 2001, Bend, OR
  • Schichtel, B. A., Ames, R. B., Engle, M. S., Fox, D. G., Malm, W. C., Winchester, J. I., 2001: The IMPROVE web site, AWMA/AGU Regional Haze and Global Radiation Balance Conference.October 2-5, 2001, Bend, OR
  • Schichtel, B. A., Gebhart, K. A., 2001: Transport patterns associated with high and low sulfate concentration at Big Bend, Texas during the Big Bend Regional Aerosol and Visibility study, International Specialty Conference of the Air and Waste Management Association.October 2-5, 2001, Bend, OR
  • Schichtel, B. A., Gebhart, K. A., Malm, W. C., 2001: Transport patterns during high and low sulfur concentrations at Big Bend, Texas during BRAVO, AWMA/AGU Regional Haze and Global Radiation Balance Conference.October 2-5, 2001, Bend, OR
  • Husar, R. B., Schichtel, B. A., 2001: Visualization of transboundary air pollutant transport to the US: Final report, CAPITA Cooperative Research Agreement with EPA, vol. CX #825834
  • Malm, W. C., Ames, R. B., Ashbaugh, L. L., Collett, J. L. Jr., Copeland, S., Gebhart, K. A., Lebens, R., Molenar, J. V., Schichtel, B. A., Sisler, J. F., Vimont, J., 2001: WESTAR/NPS visibility monitoring data analysis, WESTAR/NPS Visibility Monitoring Data Analysis Workshop.August 28-29, 2001, Fort Collins, CO
  • Schichtel, B. A., Falke, S. R., Husar, R. B., Wilson, W. E., 2000: Haze trends over the United States, 1980-1995, AWMA/JGR Specialty Conference.September 2000, Vienna, Austria
  • Schichtel, B. A., Fox, D. G., 2000: IMPROVE and WRAP websites launched to provide comprehensive data and information, IMPROVE Newsletter, vol. Fall 2000, 3-8
  • Falke, S. R., Husar, R. B., Schichtel, B. A., 1998: U.S. seasonal and annual fine particulate concentrations, 91st Annual Conference of the Air and Waste Management Association.June 14-19, 1998, San Diego, CA
  • Schichtel, B. A., Husar, R. B., Malm, W. C., Poirot, R. L., Wilson, W. E., 1992: Reconciliation of visibility and aerosol composition data over the U.S., 85th Annual Meeting of the Air and Waste Management Association.June 16-21, 1992, Kansas City, MO
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