Dr. Marc L. Pitchford

Executive Director Of Division Of Atmospheric Sciences
4d6172632e5069746368666f7264406472692e656475
775-674-7127
atmospheric visibility, remote area air quality, IMPROVE, urban visibility

Professional Interests

Dr. Pitchford has been involved in air quality monitoring and assessment research since 1974. In particular his interests and experience has been in leading technical teams responsible for the design and management of extensive aerosol and visibility monitoring studies and networks. Among his achievements is the design and oversight of the IMPROVE aerosol and visibility monitoring network which started with 20 sites in 1986 and continues to operate over 160 sites nationwide; the design and technical leadership of Project MOHAVE (1991 – 1996) and the BRAVO Study (1997 – 2004), both involved extensive field monitoring programs with ambient measurements and tracer release and monitoring followed by deterministic and receptor modeling for source attribution; and co-technical leader of the EPA PM Super Sites program that funded five university research partnerships to develop and operate sophisticated aerosol monitoring sites various urban areas. Dr. Pitchford has also acted as a visibility subject matter expert adviser to the US Environmental Protection Agency for the development and implementation of policy for visibility protection of national parks and wilderness areas, and for the review/revisions of the Secondary Particulate Matter National Ambient Air Quality Standards.

Research Areas

  • Meteorology
  • Air Quality

Education

DegreeYearInstitutionArea
Ph.D. 1992 University of Nevada, Reno Physics
M.S. 1974 University of Nevada, Reno Atmospheric Physics
B.S. 1971 Wisconsin State University-Oshkosh Physics

Professional Activities and Memberships

  • Interagency Monitoring of Protected Visual Environments (IMPROVE) Chair, Steering Committee (1985 – 2011)
  • USDA Agriculture Air Quality Task Force – Member (2004 – 2006)
  • Western Regional Air Partnership (WRAP) - Chair, Ambient Monitoring and Reporting Forum (1997 – 2006)
  • Central States Regional Air Partnership (CenRAP) - Monitoring Workgroup member (2002 – 2009)
  • Regional Planning Organizations, Technical Coordination - Co-chair, Data Analysis and Monitoring Committee (2002 – 2009)
  • Columbia River Gorge Air Quality Study Technical Advisory Committee Member (2003 – 2009)
  • Air and Waste Management Association – Member (1980 – present)
  • International Air Quality Advisory Board to the International Joint Commission (U.S. and Canada) - Technical Advisory Panel Member (2003 – 2006)

Publications & Presentations

2015

Cheng, Z., Jiang, J., Chen, C., Gao, J., Wang, S., Watson, J. G., Wang, H., Deng, J., Wang, B., Zhou, M., Chow, J. C., Pitchford, M. L., Hao, J. (2015). Estimation of Aerosol Mass Scattering Efficiencies under High Mass Loading: Case Study for the Megacity of Shanghai, China, Environ. Sci. Technol., 49, 831-838
So, R., Vingarzan, R., Jones, K., Pitchford, M. L. (2015). Modeling of time-resolved light extinction and its applications to visibility management in the Lower Fraser Valley of British Columbia, Canada, J. Air & Waste Manage. Assoc., 65, (6), 707-720

2014

Hand, J., Schichtel, B., Malm, W., Copeland, S., Molenar, J., Frank, N., Pitchford, M. L. (2014). Widespread reductions in haze across the United States from the early 1990s through 2011, Atmospheric Environment, 94, 671-679, doi: 10.1016/j.atmosenv.2014.05.062
Hand, J. L., Schichtel, B. A., Malm, W. C., Pitchford, M. L., Frank, N. H. (2014). Spatial and seasonal patterns in urban influence on regional concentrations of speciated aerosols across the United States, J. Geophys. Res.: Atmos., 119, (22), 12832-12839, DOI: 10.1002/2014JD022328

2012

Hand, J. L., Schichtel, B. A., Malm, W. C., Pitchford, M. L. (2012). Particulate sulfate ion concentration and SO2 emission trends in the United States from the early 1990s through 2010, Atmos. Chem. Phys., 12, 10353-10365, doi: 10.5194/acp-12-10353-2012
Hand, J. L., Schichtel, B. A., Malm, W. C., Pitchford, M. L., Frank, N. H. (2012). Seasonal composition of remote and urban fine particulate matter in the United States, J. Geophys. Res., 117, (D05209), Online, doi: 10.1029/2011JD017122.
Schichtel, B. A., Rodriguez, M. A., Barna, M. G., Gebhart, K. A., Pitchford, M. L., Malm, W. C. (2012). A semi-empirical, receptor-oriented Lagrangian model for simulating fine particulate carbon at rural sites, Atmos. Environ., 61, 361-370
White, W. H., Farber, R. J., Malm, W. C., Nuttall, M., Pitchford, M. L., Schichtel, B. A. (2012). Comment on "Effect of coal-fired power generation on visibility in a nearby National Park (Therhorst and Berkman, 2010)", Atmos. Environ., 55, 173-178

2011

Hand, J. L., Copeland, S. A., McDade, C. E., Day, D. E., Moore, C. T., Dillner, A. M., Pitchford, M. L., Indresand, H., Schichtel, B. A., Malm, W. C., Watson, J. G. (2011). Spatial and seasonal patterns and temporal variability of haze and its constituents in the United States, IMPROVE Report V, Cooperative Institute for Research in the Atmosphere
Murphy, D. M., Chow, J. C., Leibensperger, E. M., Malm, W. C., Pitchford, M. L., Schichtel, B. A., Watson, J. G., White, W. H. (2011). Decreases in elemental carbon and fine particle mass in the United States, Atmos.Chem.Phys., 4679-4686

2009

Kavouras, I. G., Etyemezian, V. R., DuBois, D. W., Xu, J., Pitchford, M. L. (2009). Source reconciliation of atmospheric dust causing visibility impairment in Class I areas of the western United States, J. Geophys. Res. - Atmospheres, 114, (D2), doi: 10.1029/2008JD009923

2007

Etyemezian, V. R., Kuhns, H. D., Pitchford, M. L., Ahonen, S., Nikolich, G. (2007). Wind shear inducing soil stability measuring device, U.S. Patent Office, January 2, 2007, No. 7,155,966 B1
Etyemezian, V. R., Nikolich, G., Ahonen, S. M., Pitchford, M. L., Sweeney, R., Purcell, J., Gillies, J. A., Kuhns, H. D. (2007). The Portable In Situ Wind Erosion Laboratory (PI-SWERL): A new method to measure PM10 windblown dust properties and potential for emissions, Atmos. Environ., 41, (18), 3789-3796, doi: 10.1016/j.atmosenv.2007.01.018
Kavouras, I. G., Etyemezian, V. R., Xu, J., DuBois, D. W., Green, M. C., Pitchford, M. L. (2007). Assessment of the local windblown component of dust in the western United States, J. Geophys. Res, 112, (D08211), doi: 10.1029/2006JD007832
Malm, W. C., Pitchford, M. L., McDade, C., Ashbaugh, L. L. (2007). Coarse particle speciation at selected locations in the rural continental United States, Atmos. Environ., 41, (10), 2225-2239
Pitchford, M. L., Malm, W. C., Schichtel, B., Kumar, N., Lowenthal, D. H., Hand, J. (2007). Revised algorithm for estimating light extinction from IMPROVE particle speciation data, J. Air & Waste Manage. Assoc., 57, 1326-1336

2006

Kavouras, I. G., Xu, J., Etyemezian, V. R., DuBois, D. W., Green, M. C., Pitchford, M. L. (2006). Contributions of dust and smoke on aerosol extinction coefficient, Eos Trans AGU, 87, (52)
Xu, J., DuBois, D. W., Pitchford, M. L., Green, M. C., Etyemezian, V. R. (2006). Attribution of Sulfate Aerosols in Federal Class 1 Areas of the Western United States Based on Trajectory Regression Analysis, Atmos Environ, 40, 3433-3447

2003

Etyemezian, V. R., Kuhns, H. D., Gillies, J. A., Chow, J. C., Green, M. C., Hendrickson, K., McGown, M., Pitchford, M. L. (2003). Vehicle based road dust emissions measurement (III): Effect of speed, traffic volume, location, and season on PM10 road dust emissions, Atmos. Environ., 37, 4583-4593
Etyemezian, V. R., Kuhns, H. D., Gillies, J. A., Green, M. C., Pitchford, M. L., Watson, J. G. (2003). Vehicle-Based Road Dust Emissions Measurement (I): Methods and Calibration, Atmos. Environ., 37, 4559-4571
Green, M. C., Kuhns, H. D., Pitchford, M. L., Dietz, R., Ashbaugh, L. L., Watson, T. (2003). Application of the Tracer-Aerosol Gradient Interpretive Technique (TAGIT) to sulfur attribution for the Big Bend Regional Aerosol and Visibility Observational (BRAVO) Study, J. Air & Waste Manage. Assoc.

2002

Kuhns, H. D., Etyemezian, V. R., Green, M. C., Hendrickson, K., McGown, M., Barton, K., Pitchford, M. L. (2002). Vehicle-based road dust emissions measurement (II): Effects of precipitation, wintertime road sanding, and street sweepers on PM10 fugitive dust emissions from paved and unpaved roads, Atmos. Environ.

2001

Kuhns, H. D., Etyemezian, V. R., Landwehr, D., Macdougall, C. S., Pitchford, M. L., Green, M. C. (2001). Testing Re-entrained Aerosol Kinetic Emissions from Roads (TRAKER): A new approach to infer silt loading on roadways, Atmos. Environ., 35, 2815-2825

2000

Pitchford, M. L., Green, M. C., Kuhns, H. D., Farber, R. J. (2000). Characterization of regional transport and dispersion using Project MOHAVE tracer data, J. Air & Waste Manage. Assoc., 50, (5), 733-745

1999

Kuhns, H. D., Green, M. C., Pitchford, M. L., Vasconcelos, L., White, W. H., Mirabella, V. (1999). Attribution of particulate sulfur in the Grand Canyon to specific point sources using Tracer-Aerosol Gradient Interpretive Technique (TAGIT), J. Air Waste Manage. Assoc., 49, (8), 906-915

1998

Watson, J. G., Chow, J. C., DuBois, D. W., Green, M. C., Frank, N., Pitchford, M. L. (1998). Network design principles for population-oriented monitoring of suspended particles, 461-472
Watson, J. G., Chow, J. C., Moosmüller, H., Green, M. C., Frank, N., Pitchford, M. L. (1998). Guidance for using continuous monitors in PM 2.5 monitoring networks

1997

Pitchford, M. L., Chow, J. C., Watson, J. G., Moore, C., Campbell, D., Eldred, R., Vanderpool, R., Ouchida, P., Hering, S., Frank, N. (1997). Prototype PM 2.5 federal reference method field studies report - An EPA staff report
Watson, J. G., Chow, J. C., DuBois, D. W., Green, M. C., Frank, N., Pitchford, M. L. (1997). Guidance for network design and optimal site exposure for PM 2.5 and PM 10
Watson, J. G., Chow, J. C., DuBois, D. W., Green, M. C., Frank, N., Pitchford, M. L. (1997). Network design principles for population-oriented monitoring of suspended particles, 461-472

1993

Watson, J. G., Green, M. C., Hoffer, T. E., Lawson, D., Eatough, D., Farber, R., Malm, W., McDade, C., Pitchford, M. L. (1993). Project MOHAVE data analysis plan

1990

Mathai, C., Watson, J. G., Rogers, C. F., Chow, J. C., Tombach, I., Zwicker, J., Cahill, T., Feeney, P., Eldred, R., Pitchford, M. L., Mueller, P. (1990). Intercomparison of ambient aerosol samplers used in western visibility and air quality studies, Environ. Sci. Technol, 24, (7), 1090-1099

1989

Mueller, P., Henry, R., Balson, W., Richards, L., Pitchford, M. L., Watson, J. G., Neff, W., Saxena, P., Wilson, W. (1989). Future research on visibility and fine particles: Report from a panel discussion, 972-989

1988

Trijonis, J., McGown, M., Pitchford, M. L., Blumenthal, D., Roberts, P., White, W., Macias, E., Weiss, R., Waggoner, A., Watson, J. G., Chow, J. C., Flocchini, R. (1988). The RESOLVE project: Visibility conditions and causes of visibility degradation in the Mojave desert of California

1987

Trijonis, J., Pitchford, M. L., McGown, M., Blumenthal, D., Dodson, T., Flocchini, R., Kelso, R., Knuth, W., Macias, E., Gara, J., Pitchford, A., Smith, T., Waggoner, A., Watson, J. G., Weiss, R., White, W. (1987). Preliminary extinction budget results from the RESOLVE program, In Transactions, Visibility Protection: Research and Policy Aspects, 872-883, Air & Waste Management Association: Pittsburgh, PA

1983

Hansen, D., Watson, J. G., Bhardwaja, P., Farber, R., Kelso, R., Malm, W., Mueller, P., Pitchford, M. L., Wilson, W. (1983). The SCENES: A major air quality and visibility research study in the southwestern United States
Hansen, D., Watson, J. G., Bhardwaja, P., Farber, R., Kelso, R., Malm, W., Mueller, P., Pitchford, M. L., Wilson, W. (1983). The SCENES: A major air quality and visibility research study in the southwestern United States, Air & Waste Management Association: Pittsburgh, PA

Authors

Abstract

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