Pratt Lab :: Environmental and Analytical Chemistry

63. The Importance of Blowing Snow to Antarctic Aerosols: Number Distribution and more than Source-Dependent Composition – results from the 2ODIAC campaign
Giordano, M. R., Kalnajs, L. E., Goetz, J. D., Avery, A. M., Katz, E., May, N. W., Leemon, A., Mattson, C., Pratt, K. A., and DeCarlo, P. F. Atmos. Chem. Phys. Discuss., 2018.

62. Marine and terrestrial influences on ice nucleating particles during continuous springtime measurements in an Arctic oilfield location
Creamean, J. M., Kirpes, R. M., Pratt, K. A., Spada, N. J., Maahn, M., de Boer, G., Schnell, R. C., and China, S. Atmos. Chem. Phys. Discuss., 2018.

61. pH-Dependent production of molecular chlorine, bromine, and iodine from frozen saline surfaces
Halfacre, J. W., Shepson, P. B., and K. A. Pratt Atmos. Chem. Phys. Discuss., 2018.

60. Springtime Bromine Activation over Coastal and Inland Arctic Snowpacks
Peterson, P. K.,Pöhler,D, Zielcke, J., General, S., Frieß, U., Platt, U., Simpson, W. R., Nghiem, S. V., Shepson, P. B., Stirm, B. H., and Pratt, K. A. ACS Earth and Space Chemistry, 2018.

59. Local Arctic air pollution: A neglected but serious problem
J. Schmale*, S. R. Arnold, K. S. Law, T. Thorp, S. Anenberg, W. R. Simpson, J. Mao, and K. A. Pratt Earth's Future, 2018.

58. Unexpected contributions of sea spray and lake spray aerosol to inland particulate matter
May, N.W., M. J. Gunsch, N. Olson, A. L. Bondy, R. M. Kirpes , S. Bertman, S. China, A. Laskin, P. K. Hopke, A. P. Ault*, and K. A. Pratt* Environmental Science and Technology Letters, 2018.

57. Secondary Sulfate is Internally Mixed with Sea Spray Aerosol and Organic Aerosol in the winter Arctic
Kirpes, R.M.,, A.L. Bondy, D. Bonanno, R. C. Moffet, B. Wang, A. P. Ault*, and K. A. Pratt* Atmospheric Chemistry and Physics, 2018.

56. Polar Plunge: Semester-Long Snow Chemistry Research in the General Chemistry Laboratory
May, N.W., S. M. McNamara, S. Wang, K. R. Kolesar, J. Vernon, J. P. Wolfe, D. Goldberg, and K.A. Pratt* Journal of Chemical Education, 2018.

55. Particle growth in an isoprene-rich forest: Influence of urban, wildfire, and biogenic precursors
Gunsch, M.J.,, S.A. Schmidt, D.J. Gardner, A.L. Bondy, N.W. May, S.B. Bertman, K.A. Pratt*, and A.P. Ault* Atmospheric Environment, 2018.

54. Ubiquitous Influence of Wildfire Emissions and Secondary Organic Aerosol on Summertime Atmospheric Aerosol in the Forested Great Lakes Region
Gunsch, M.J., N. W. May, M. Wen, C. L. H. Bottenus, D. J. Gardner, T. M. VanReken, S. B. Bertman, P. K. Hopke, A. P. Ault*, and K. A. Pratt* Atmospheric Chemistry and Physics, 2018.

53. Increases in wintertime PM2.5 sodium and chloride linked to snowfall and road salt application
Kolesar, K. R., C. N. Mattson, P. K. Peterson, N. W. May, R. K. Prendergast, and K. A. Pratt* Atmospheric Environment, 2018.

52. Aerosol Emissions from Great Lakes Harmful Algal Blooms
May, N. W., N. E. Olson, M. Panas, J. L. Axson, P. S. Tirella, R. M. Kirpes, R. L. Craig, M. J. Gunsch, S. China, A. Laskin, A. P. Ault*, and K. A. Pratt* Environmental Science and Technology, 2017.
ES&T Cover
Michigan News

51. Molecular Halogens Above the Arctic Snowpack: Emissions, Diurnal Variations, and Recycling Mechanisms
Wang, S., and K. A. Pratt* Journal of Geophysical Research Atmospheres, 2017.

50. Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water
Cook, R.D., Y. Lin, Z. Peng, E. Boone, R. K. Chu, J. E. Dukett, M. J. Gunsch, W. Zhang, N. Tolic, A. Laskin, and K. A. Pratt* Atmospheric Chemistry and Physics , 2017.

49. Active molecular iodine photochemistry in the Arctic
Raso, A.R.W., K.D. Custard, N.W. May, D. Tanner, M. K. Newburn, R. J. Moore, L. G. Huey, L. Alexander, P. B. Shepson, and K. A. Pratt* Proceedings of the National Academy of Sciences, 2017.
Michigan News
Purdue News

48. Atomic Force Microscopy-Infrared Spectroscopy of Individual Atmospheric Aerosol Particles: Sub-Diffraction Limit Vibrational Spectroscopy and Morphological Analysis
Bondy, A.L., R.M. Kirpes , R. L. Merzel, K.A. Pratt, M.M. Banaszak Holl, and A.P. Ault* Analytical Chemistry, 2017.

47. Inland Sea Spray Aerosol Transport and Incomplete Chloride Depletion: Varying Degrees of Reactive Processing Observed during SOAS
Bondy, A.L., B. Wang, A. Laskin, R.L. Craig, M. V. Nhliziyo, S.B. Bertman, K.A. Pratt, P.B. Shepson, and A.P. Ault* Environmental Science and Technology, 2017.

46. Contributions of transported Prudhoe Bay oilfield emissions to the aerosol population in Utqiaġvik, Alaska
Gunsch, M.J., R.M. Kirpes, K.R. Kolesar, T.E. Barrett, S. China, R.J. Sheesley, A. Laskin, A. Wiedensohler, T. Tuch, and K.A. Pratt* Atmospheric Chemistry and Physics, 2017.
Ensia Article
Climate Central Article

45. Horizontal and vertical structure of reactive bromine events probed by bromine monoxide MAX-DOAS.
Simpson, W.R.*, P.K. Peterson, U. Frieß, H. Sihler, J. Lampel, U. Platt, C. Moore, K. Pratt, P. Shepson, J. Halfacre and S.V. Nghiem Atmospheric Chemistry and Physics, 2017.

44. Observations of bromine monoxide transport in the Arctic sustained on aerosol particles.
Peterson, P.K., H. Sihler, D. Pöhler, J. Zielcke, S. General, U. Frieß, U. Platt, W.R. Simpson, S.V. Nghiem, P.B. Shepson, B.H. Stirm, S. Dhaniyala, T. Wagner, D.R. Caulton, J.D. Fuentes and K.A. Pratt*. Atmospheric Chemistry and Physics, 2017.

43. Production and Release of Molecular Bromine and Chlorine from the Arctic Coastal Snowpack
K.D. Custard, A.R.W. Raso, P.B. Shepson, R.M. Staebler, K.A. Pratt* ACS Earth and Space Chemistry, 2017.

42. Effect of Prudhoe Bay Emissions on Atmospheriic Aerosol Growth Events Observed in Utqiaġvik (Barrow), Alaska
Kolesar, K.R., J. Cellini, P.K. Peterson, A. Jefferson, T. Tuch, W. Birmilli, A. Wiedensohler, K.A. Pratt* Atmospheric Environment, 2017, 152,146-155.
Alaska Dispatch Highlight

41. Dust composition changes from Taylor Glacier (East Antarctica) during the last Glacial-Interglacial transition: a multi-proxy approach.
Aarons, S.*, S. Aciego, C. Arendt, M. Blakowski, A. Steigmeyer, P. Gabrielli, M. R. Sierra-Hernández, E. Beaudon, B. Delmonte, G. Baccolo, N. May and K. Pratt. Quaternary Science Reviews , 2017

40. Laboratory studies of the cloud droplet activation properties and corresponding chemistry of saline playa dust
Gaston, C.J., K.A. Pratt, K.J. Suski, N.W. May, T.E. Gill, K.A. Prather* Environmental Science and Technology, 2016, 50(22),12394-12400.

39. Constraints on Arctic Atmospheric Chlorine Production through Measurements and Simulations of Cl2 and ClO
Custard, K.D., K.A. Pratt*, S. Wang, P.B. Shepson Environmental Science and Technology, 2016, 50(22),12394-12400.

38. Lakespray Aerosol: A Chemical Signature from Individual Ambient Particles
Axson, J.L., N.W. May, I.D. Colón-Bernal, K.A. Pratt*, and A.P. Ault*. Environmental Science and Technology, 2016, 50 (18),9835–9845

37. Multiyear study of the dependence of sea salt aerosol on wind speed and sea ice conditions in the coastal Arctic
May, N.W., P.K. Quinn, S.M. McNamara, and K.A. Pratt* (2016), Journal of Geophysical Research Atmospheres, 120

36. Changes in precipitating snow chemistry with location and elevation in the California Sierra Nevada
Creamean, J.M., J.L. Axson, A.L. Bondy, R.L. Craig, N.W. May, H. Shen, M.H. Weber, K.A. Pratt, and A.P. Ault* (2016), Journal of Geophysical Research Atmospheres, 121, 7296–7309

35. Lake spray aerosol generation: a method for producing representative particles from freshwater wave breaking
May, N.W., Axson, J.L., Watson, A., Pratt, K.A.*, and Ault, A.P.* Atmospheric Measurement Techniques, 9, 4311-4325, 2016.

34. The role of open lead interactions in atmospheric ozone variability between Arctic coastal and inland sites
Peterson, P.K., K.A. Pratt*, W.R. Simpson, S.V. Nghiem, L.X. Pérez Pérez, E.J. Boone, D. Pöhler, J. Zielcke, S. General, P.B. Shepson, U. Frieß, U. Platt, B.H. Stirm. 2016. Elementa: Science of the Anthropocene, 4: 000109.

33. Observation of isoprene hydroxynitrates in the southeastern United States and implications for the fate of NOx
Xiong, F., K.M. McAvey, K.A. Pratt, C.J. Groff, M.A. Hostetler, M.A. Lipton, T.K. Starn, J.V. Seeley, S.B. Bertman, A.P. Teng, J.D. Crounse, T.B. Nguyen, P.O. Wennberg, P. K. Miszta, A.H. Goldstein, A.B. Guenther, A.R. Koss, K.F. Olson, J.A. de Gouw, K. Baumann, E.S. Edgerton, P.A. Feiner, L. Zhang, D.O. Miller, W.H. Brune, and P.B. Shepson. Atmospheric Chemistry and Physics, 15(19), 11257-11272.

32. Aqueous Processing of Atmospheric Organic Particles in Cloud Water Collected via Aircraft Sampling
E.J. Boone, A. Laskin, J. Laskin, C. Wirth, P.B. Shepson, B.H. Stirm, and K.A. Pratt*. Environmental Science and Technology, 2015, 49 (14), 8523-8530.

Publications Prior to University of Michigan

31. The NOx dependence of bromine chemistry in the Arctic atmospheric boundary layer
Custard, K.D., C.R. Thompson, K.A. Pratt, P.B. Shepson, J. Liao, L.G. Huey, J.J. Orlando, A.J. Weinheimer, E. Apel, S.R. Hall, F. Flocke, L. Mauldin, R.S. Hornbrook, D. Pöhler, S. General, J. Zielcke, W.R. Simpson, U. Platt, A. Fried, P. Weibring, B.C. Sive, K. Ullmann, C. Cantrell, D.J. Knapp, and D.D. Montzka. Atmospheric Chemistry and Physics, 15(18), 10799-10809.

30. Dependence of the vertical distribution of bromine monoxide in the lower troposphere on meteorological factors such as wind speed and stability
Peterson, P.K., W.R. Simpson, K.A. Pratt , P.B. Shepson, U. Frieß, J. Zielcke, U. Platt, S.J. Walsh, and S.V. Nghiem. Atmospheric Chemistry and Physics, 2015, 15: 2119-2137.

29. Impacts of Aerosol Aging on Laser Desporption/Ionization in Single-Particle Mass Spectrometers
Lindsay E. Hatch, Kerri A. Pratt ,J. Alex Huffman, Jose L. Jimenez, and Kimberly A. Prather. Aerosol Science and Technology, Vol. 48, Iss. 10, 2014.

28. Temporal and spatial characteristics of ozone depletion events from measurements in the Arctic
J. W. Halfacre, T. N. Knepp,P. B. Shepson, C. R. Thompson, K. A. Pratt, B. Li, P. K. Peterson, S. J. Walsh, W. R. Simpson, P. A. Matrai, J. W. Bottenheim, S. Netcheva, D. K. Perovich, and A. Richter Atmospheric Chemistry and Physics,2014, 14: 4875-4894.

27. Studying Bromine, Ozone, and Mercury Chemistry in the Arctic
Nghiem, S., P. Clemente-Colon, T. Douglas, C. Moore, D. Obrist, D. Perovich, K. A. Pratt, I. Rigor, W. Simpson, P.B. Shepson, A. Steffen and J. Woods, EOS,Transactions American Geophysical Union, 2013, 94: 289-291.

26. Organosulfates in cloud water above the Ozarks’ isoprene source region
Pratt, K.A.*, M.N. Fiddler, P.B. Shepson, A.G. Carlton and J.D. Surratt, Atmospheric Environment, 2013, 77: 231-238.

25. Photochemical production of molecular bromine in Arctic surface snowpacks
Pratt, K.A.*, K. D. Custard, P.B. Shepson, T.A. Douglas, D. Pöhler, S. General, J. Zielcke, W.R. Simpson, U. Platt, D.J. Tanner, L.G. Huey, M. Carlsen and B.H. Stirm, Nature Geoscience, 2013, 6: 351-356.
Nature Geoscience News & View article
Chemical & Engineering News Highlight "Origin of Arctic bromine identified"

24. Improvements to an empirical parameterization of heterogeneous ice nucleation and its comparison with observations
Phillips, V.T.J., P.J. DeMott, C. Andronache, K.A. Pratt, K.A. Prather, R. Subramanian, and C. Twohy, Journal of the Atmospheric Sciences, 2013, 70: 378-409.

23. Contributions of individual reactive biogenic volatile organic compounds to organic nitrates above a mixed forest
Pratt, K.A.*, L.H. Mielke, P.B. Shepson, A.M. Bryan, A.L. Steiner, J. Ortega, R. Daly, D. Helmig, C.S. Vogel, S. Griffith, S. Dusanter, P.S. Stevens and M. Alaghmand, Atmospheric Chemistry & Physics, 2012, 12: 10125-10143.

22. A disjunct eddy accumulation system for the measurement of BVOC fluxes: Lab characterizations and field deployment
Edwards, G.D., D.K. Martins, T. Starn, K.A. Pratt and P.B. Shepson, Atmospheric Measurement Techniques, 2012, 5: 2115-2132.

21. Seasonal comparisons of single-particle chemical mixing state in Riverside, CA
Qin, X., K.A. Pratt, L.G. Shields, S.M. Toner and K.A. Prather, Atmospheric Environment, 2012, 59: 587-596.

20. Importance of aerosol composition, mixing state and morphology for depositional ice nucleation: A combined field and laboratory approach.
Baustian, K.J., D.J. Cziczo, M.E. Wise, K.A. Pratt, G. Kulkarni, A.G. Hallar and M.A. Tolbert, Journal of Geophysical Research, 2012, 117: doi:10.1029/2011JD016784.

19. Ice in Clouds Experiment – Layer Clouds. Part 2: Testing characteristics of heterogeneous ice formation in lee wave clouds
Field, P.R., A.J. Heymsfield, B.J. Shipway, P.J. DeMott, K.A. Pratt, D.C. Rogers, J. Stith and K.A. Prather, Journal of the Atmospheric Sciences, 2012, 69: 1066-1079.

18. In situ, airborne instrumentation: Addressing and solving measurement problems in ice clouds
Baumgardner, D., L. Avallone, A. Bansemer, S. Borrmann, P. Brown, U. Bundke, P. Chuang, D. Cziczo, P. Field, M. Gallagher, J.-F. Gayet, A. Heymsfield, A. Korolev, M. Krämer, S. Lance, P. Lawson, G. McFarquhar, S. Mertes, O. Möhler, M. Petters, K. Pratt, G. Roberts, D. Rogers, O. Stetzer, J. Stith, W. Strapp, C. Twohy and M. Wendisch, Bulletin of the American Meteorological Society, 2012, 93: E529-E534.

15. Flight-based chemical characterization of biomass burning aerosols within two prescribed burn smoke plumes
Pratt, K.A., S.M. Murphy, R. Subramanian, P.J. DeMott, G.L. Kok, T. Campos, D.C. Rogers, A.J. Prenni, A.J. Heymsfield, J.H. Seinfeld and K.A. Prather, Atmospheric Chemistry & Physics, 2011, 11: 12549-12565.

14.Quantitative determination of biogenic volatile organic compounds in the atmosphere using proton-transfer reaction linear ion trap mass spectrometry
Mielke, L.H., K.A. Pratt, P.B. Shepson, S.A. McLuckey, A. Wisthaler, and A. Hansel, Analytical Chemistry, 2010, 82: 7952-7957.

13. Ice initiation by aerosol particles: Measured and predicted ice nuclei concentrations versus measured ice crystal concentrations in an orographic wave cloud
Eidhammer, T., P.J. DeMott, A.J. Prenni, M.D. Petters, C.H. Twohy, D.C. Rogers, J. Stith, A. Heymsfield, Z. Wang, K.A. Pratt, K.A. Prather, S.M. Murphy, J.H. Seinfeld, R. Subramanian, and S.M. Kreidenweis, Journal of the Atmospheric Sciences, 2010, 67: 2417-2436.

12. Relationships of biomass burning aerosols to ice in orographic wave clouds
Twohy, C.H., P.J. DeMott, K.A. Pratt, R. Subramanian, G.L. Kok, S.M. Murphy, T. Lersch, K.A. Prather, J.H. Seinfeld, A.J. Heymsfield and Z. Wang, Journal of the Atmospheric Sciences, 2010, 67: 2437-2450.

11. In-situ chemical characterization of aged biomass burning aerosols impacting cold wave clouds
Pratt, K.A., A.J. Heymsfield, C.H. Twohy, S.M. Murphy, P.J. DeMott, J.G. Hudson, R. Subramanian, Z. Wang, J.H. Seinfeld and K.A. Prather, Journal of the Atmospheric Sciences, 2010, 67: 2451-2468.

10. Observation of playa salts as nuclei in orographic wave clouds
Pratt, K.A., C.H. Twohy, S.M. Murphy, R.C. Moffet, A.J. Heymsfield, C.J. Gaston, P.J. DeMott, P.R. Field, T.R. Henn, D.C. Rogers, M.K. Gilles, J.H. Seinfeld and K.A. Prather, Journal of Geophysical Research, 2010, 115: doi:10.1029/2009JD013606.

9. Aircraft measurements of vertical profiles of aerosol mixing states
Pratt, K.A. and K.A. Prather, Journal of Geophysical Research, 2010, 115: doi:10.1029/2009JD013150.

8. Real-time detection and mixing state of methanesulfonate in single particles at an inland urban location during a phytoplankton bloom
Gaston, C.J., K.A. Pratt, X. Qin and K.A. Prather, Environmental Science & Technology, 2010, 44: 1566-1572.

7. Real-time, single-particle volatility, size, and chemical composition measurements of aged urban aerosols
Pratt, K.A. and K.A. Prather, Environmental Science & Technology, 2009, 43: 8276-8282.

6. Seasonal volatility dependence of ambient particle phase amines
Pratt, K.A., L.E. Hatch and K.A. Prather, Environmental Science & Technology, 2009, 43: 5276-5281.

5. In-situ detection of biological particles in cloud ice crystals
Pratt, K.A., P.J. DeMott, J.R. French, Z. Wang, D.L. Westphal, A.J. Heymsfield, C.H. Twohy, A.J. Prenni and K.A. Prather, Nature Geoscience, 2009, 2: 398-401.
Nature Geoscience Backstory
Nature Geoscience News & Views article
Chemical & Engineering News Highlight

4. Development and characterization of an aircraft aerosol time-of-flight mass spectrometer
Pratt, K.A., J.E. Mayer, J.C. Holecek, R.C. Moffet, R.O. Sanchez, T. Rebotier, H. Furutani, M. Gonin, K. Fuhrer, Y. Su, S. Guazzotti and K.A. Prather, Analytical Chemistry, 2009, 81: 1792-1800.

3. NMR studies of the thermal degradation of a perfluoropolyether on the surfaces of γ-alumina and kaolinite.
Denkenberger (Pratt), K.A., R.A. Bowers, A.D. Jones and K.T. Mueller, Langmuir, 2007, 23: 8855-8860.

2. Real-time, single-particle measurements of oligomers in aged ambient aerosol particles
Denkenberger (Pratt), K.A., R.C. Moffet, J.C. Holecek, T.P. Rebotier and K.A. Prather, Environmental Science & Technology, 2007, 41: 5439-5446.

1. The use of 19F NMR to interpret the structural properties of perfluorocarboxylate acids: A possible correlation with their environmental disposition
Ellis, D.A., K.A. Denkenberger (Pratt), T.E. Burrow and S.A. Mabury, Journal of Physical Chemistry A, 2004, 108: 10099-10106.

Pratt Lab :: Environmental and Analytical Chemistry