Office of Research and Development Publications

National Risk Management Research Laboratory (NRMRL) Research Publications

See all EPA publications for John Walker, Jr. Include records from any date Include records from any EPA source

Records 26 to 37 of 37 records from [ORD-NRMRL] published between 07/16/2013 and 07/16/2018 from author John Walker, Jr.

2015

Spence, P., Johnt Walker, W. Robarge, B. Preston, AND D. Osmond. Comparing Nitrous Oxide Emissions from Three Residential Landscapes under Different Management Schemes Following Natural Rainfall Events. Urban Ecosystems. Springer Science+Business Media B.V, Dordrecht, Netherlands, 18:1-17, (2015).

Almand-Hunter, B., Johnt Walker, N. Masson, L. Hafford, AND M. Hannigan. Development and validation of inexpensive, automated, dynamic flux chambers. Atmospheric Measurement Techniques. Copernicus Publications, Katlenburg-Lindau, Germany, 8(1):267-280, (2015).

Schichtel, B. AND Johnt Walker. Reactive Nitrogen Monitoring Gaps: Issues, Activities and Needs. ENVIRONMENTAL MANAGEMENT. Springer-Verlag, New York, NY, 65:12-19, (2015).

Yu, F., G. Luo, S. Pryor, P. Pillai, S. Lee, J. Ortega, J. Schwab, A. Hallar, W. Leaitch, V. Aneja, J. Smith, Johnt Walker, O. Hogrefe, AND K. Demerjian. Spring and summer contrast in new particle formation over nine forest areas in North America. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 15(24):13993-14003, (2015).

2014

Rumsey, I., K. A. Cowen, Johnt Walker, T. J. Kelly, E. A. Hanft, K. Mishoe, C. Rogers, R. Proost, G. M. Beachley, G. Lear, T. Frelink, AND R. P. Otjes. An assessment of the performance of Monitor for AeRosols and GAses in ambient air (MARGA): a semi-continuous method for soluble compounds. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 14:5639-5658, (2014).

Walker, Johnt, D. Schwede, J. Bash, AND C. Oishi. Comparison of Aerodynamic Resistance Parameterizations and Implications for Dry Deposition Modeling. National Atmospheric Deposition Program, Indianapolis, IN, October 22 - 24, 2014.

Walker, Johnt, W. Robarge, AND R. Austin. Modeling of Ammonia Dry Deposition to a Pocosin Landscape Downwind of a Large Poultry Facility. AGRICULTURE, ECOSYSTEMS & ENVIRONMENT. Elsevier Science Ltd, New York, NY, 185(0):161-175, (2014).

WALKER, JR., J. T., W. P. Robarge, AND R. Austin. Modeling of ammonia dry deposition downwind of a large poultry facility. SCIENCE. American Association for the Advancement of Science (AAAS), Washington, DC, 185:161-175, (2011).

2013

Novick, K., Johnt Walker, S. Chan, C. Sobek, AND J. Vose. Eddy covariance measurements in complex terrain with a new fast response, closed-path analyzer: spectral characteristics and cross-system comparisons. AGRICULTURAL AND FOREST METEOROLOGY. Elsevier Science Ltd, New York, NY, 181:17-32, (2013).

George, I., R. Black, Johnt Walker, M. Hays, D. Tabor, AND B. Gullett. Emissions of volatile organic compounds and particulate matter from small-scale peat fire. American Geophysical Union Fall Meeting, San Francisco, CA, December 09 - 13, 2013.

George, I., R. Black, Johnt Walker, M. Hays, B. Preston, D. Tabor, AND B. Gullett. Emissions of volatile organic compounds and particulate matter from small-scale peat fires. American Geophysical Union Fall Meeting, San Francisco, CA, December 09 - 13, 2013.