William Simpson

Research Description

Our research group investigates Arctic radical chemistry through field measurements of trace gases and reactive radicals. We have developed and deployed spectroscopic instruments, including laser-based instruments using cavity ring-down spectroscopy and passive optical absorption instruments. Understanding of radical chemistry in the Arctic is critical for determining the fate of pollutants in the Arctic, including organics and mercury, and how this fate may change in a rapidly changing Arctic.

Selected Publications
  • Huff, D. M.,   P. L. Joyce, G. J. Fochesatto, W. R. Simpson, "Deposition of dinitrogen pentoxide, N2O5, to the snowpack at high latitudes", Atmos. Chem. Phys., 11, 4929–4938, 2011, doi:10.5194/acp-11-4929-2011.
  • L. Krnavek, W. R. Simpson, D. Carlson, F. Domine, T. A. Douglas, M. Sturm (2012) The chemical composition of surface snow in the Arctic: Examining marine, terrestrial, and atmospheric influence. Atmospheric Environment, 50, 349-359.
  • Fuchs, S., W. R. Simpson, R. L. Apodaca, T. Brauers, R. C. Cohen, J. N. Crowley, H. P. Dorn, W. P. Dubé, J. L. Fry, R. Häseler, Y. Kajii, A. Kiendler-Scharr, I. Labazan, J. Matsumoto, T. F. Mentel, Y. Nakashima, F. Rohrer, A. W. Rollins, G. Schuster, R. Tillmann, and A. Wahner (2012), Comparison of N2O5 mixing ratios during NO3Comp 2007 in SAPHIR, Atmos. Meas. Tech., 5, 2763-2777, doi:10.5194/amt-5-2763-2012.
  • Pratt, K. A., K. D. Custard, P. B. Shepson, T. A. TDouglas, D. Pöhler, S. General, J. Zielcke, W. R. Simpson, U. Platt, D. J. Tanner, L. G. Huey, M. Carlsen, and B. H. Stirm (2013), Photochemical production of molecular bromine in Arctic surface snowpacks., Nature Geoscience, doi:10.1038/ngeo1779.

  • B.A. 1988, Swarthmore College
  • Ph.D. 1995, Stanford University

phone: 907.474.7235
fax: 907.474.5640
email: wrsimpson@alaska.edu
William Simpson
Department of Chemistry & Biochemistry
University of Alaska Fairbanks
Fairbanks, AK 99775-6160

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