I am an atmospheric chemist with broad interests in air quality, climate, and atmosphere-biosphere interactions. My research group makes measurements at the Earth’s surface and from onboard aircraft in diverse locations, including polluted cities, agricultural areas, and within forest canopies. Our focus is on the role of reactive nitrogen in chemical oxidation mechanisms and emissions of the greenhouse gas nitrous oxide. We utilize spatial and temporal variability in our datasets to derive mechanistic insight into processes taking place in urban and human-influenced environments. We work to find solutions to atmospheric problems that adversely affect human health and ecosystems.

PUBLICATIONS

• Modeling NH4NO3Over the San Joaquin Valley During the 2013 DISCOVER-AQ Campaign
  2018; Journal of Geophysical Research: Atmospheres; Kelly, J.T. | Parworth, C.L. | Zhang, Q. | Miller, D.J. | Sun, K. |...
• Characterizing CO and NOySources and Relative Ambient Ratios in the Baltimore Area Using Ambient Measurements and Source Attribution Modeling
  2018; Journal of Geophysical Research: Atmospheres; Simon, H. | Valin, L.C. | Baker, K.R. | Henderson, B.H. | Crawford, J.H. |...
• Modeling Regional Pollution Transport Events During KORUS-AQ: Progress and Challenges in Improving Representation of Land-Atmosphere Feedbacks
  2018; Journal of Geophysical Research: Atmospheres; Huang, M. | Crawford, J.H. | Diskin, G.S. | Santanello, J.A. | Kumar, S.V. |...
• Impacts of the Denver Cyclone on regional air quality and aerosol formation in the Colorado Front Range during FRAPPÉ 2014
  2016; Atmospheric Chemistry and Physics; Vu, K.T. | Dingle, J.H. | Bahreini, R. | Reddy, P.J. | Apel, E.C. |...
• On the effectiveness of nitrogen oxide reductions as a control over ammonium nitrate aerosol
  2016; Atmospheric Chemistry and Physics; Pusede, S.E. | Duffey, K.C. | Shusterman, A.A. | Saleh, A. | Laughner, J.L. |...
• Ozone production chemistry in the presence of urban plumes
  2016; Faraday Discussions; Brune, W.H. | Baier, B.C. | Thomas, J. | Ren, X. | Cohen, R.C. |...
• Frequency and impact of summertime stratospheric intrusions over Maryland during DISCOVER-AQ (2011): New evidence from NASA’s GEOS-5 simulations
  2016; Journal of Geophysical Research; Ott, L.E. | Duncan, B.N. | Thompson, A.M. | Diskin, G. | Fasnacht, Z. |...
• An Atmospheric Constraint on the NO2Dependence of Daytime Near-Surface Nitrous Acid (HONO)
  2015; Environmental Science and Technology; Pusede, S.E. | VandenBoer, T.C. | Murphy, J.G. | Markovic, M.Z. | Young, C.J. |...
• Evaluation of the use of a commercially available cavity ringdown absorption spectrometer for measuring NO2in flight, and observations over the Mid-Atlantic States, during DISCOVER-AQ
  2015; Journal of Atmospheric Chemistry; Brent, L.C. | Thorn, W.J. | Gupta, M. | Leen, B. | Stehr, J.W. |...
• Measurements of CH3O2NO2in the upper troposphere
  2015; Atmospheric Measurement Techniques; Nault, B.A. | Garland, C. | Pusede, S.E. | Wooldridge, P.J. | Ullmann, K. |...

TEACHING

EVSC 4559/7559 Atmosphere-Biosphere Interactions: Mechanisms and Machines, Fall 2017 (co-taught with Manuel Lerdau)

EVSC 4559 Atmospheric Composition and Global Change, Spring 2017

EVSC 4559/PLAP 4500 The Clean Air Act, Spring 2017 (co-taught with Vivian Thomson)

EVSC 5559 Atmospheric Chemistry, Fall 2016

EVSC 3300 Atmosphere and Weather, Spring 2016

EVSC 4599/7559 Current Topics in Air Quality, Fall 2015