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Faculty Directory

Philip S. Stevens

Rudy Professor and Environmental Science Faculty Chair

pstevens@indiana.edu
(812) 856-0863
MSBII Room 306


Education
Ph.D., Harvard University, 1990
A.M., Harvard University, 1986
B.A., (with honors in Chemistry), Oberlin College, Ohio, 1984

Professional Experience

  • The Pennsylvania State University, State College, Pennsylvania, Postdoctoral Research Associate, 1990-1995
  • Harvard University, Department of Chemistry, Cambridge, Massachusetts, Research Assistant and Teaching Fellow, 1984-1990

Awards, Honors & Certifications

  • Trustees Teaching Award, 2006
  • National Science Foundation CAREER Award, 2000-2005
  • Graduate Teaching Awards, School of Public and Environmental Affairs, IU, 1997, 2000, 2003
  • Teaching Excellence Recognition Award, Indiana University, 1997, 1998, 2000

Professional Interests
Characterization of the chemical mechanisms in the atmosphere that influence regional air quality and global climate change

Current Projects
Lab Website

  • National Science Foundation, AGS-1104880, 9/1/11-8/31/13, $446,119, “Measurements of HOx radical chemistry in a changing forest environment.”
  • Indiana University, Center for Research in Environmental Science, 5/1/11-4/30/12, $26,000, “Temporal dynamics of volatile organic carbon (C) emissions from forest soils: In-situ measurements of the C we do not see.” Co-PI R. Phillips.
  • National Science Foundation, AGS-1012161, 9/1/10-8/31/13, $434,503, “Development of a Laser Photofragmentation/ Laser-Induced Fluorescence Instrument for Tropospheric Measurements of Nitrous Acid.” Co-PI S. Dusanter.
  • National Science Foundation, ATM-0904167, 6/1/09-8/31/11, $1,633,776, “Collaborative Research: PROPHET 2009 – Community Atmosphere-Biosphere INteractions EXperiment (CABINEX).” M. A. Carroll (U. Michigan), P. B. Shepson (Purdue), P. S. Stevens (IU), S. Bertman (W. Michigan), D. Helmig (U. Colorado), F. Keutsch (U. Wisconsin), S. Lee (Kent State), B. Lefer (U. Houston), T. VanReken (Washington State University), IU portion $145,915.
  • National Science Foundation AGS-0612738, 7/1/06-1/31/12, $619,505, “Measurements of Tropospheric OH and HO2 in Forest Environments” including supplement for participation in the CalNex measurement campaign.
  • National Science Foundation AGS-0622815, 9/1/06-2/28/12, $541,139, “Kinetic Studies of the Hydroxyl Radical (OH) and Ozone Initiated Oxidation of Biogenic Terpenes.” (Co-PI: R. A. Hites).
  • Member, Indiana State Air Pollution Control Board, 2000- present
  • Faculty Chair, Environmental Science Faculty, School of Public and Environmental Affairs, Indiana University.

Selected Publications
Full Vita (pdf)

  • S. Griffith, R. Hansen, S. Dusanter, P. S. Stevens, M. Alaghmand, S. Bertman, M. Carroll, M. Erickson, M. Galloway, N. Grossberg, J. Hottle, J. Hou, T. Jobson, A. Kammrath, F. Keutsch, B. Lefer, L. Mielke, A. O’Brien, P. Shepson, M. Thurlow, W. Wallace, N. Zhang, X. Zhou (2012). OH and HO2 radical chemistry during PROPHET 2008 and CABINEX 2009 – Part 1: Measurements and model comparison, Atmospheric Chemistry and Physics Discussions, 12, 33165-33218
  • S. M. Dietrick, A. B. Pacheco, P. S. Stevens, and S. S. Iyengar (2012). Pump-probe atom-centered density matrix propagation studies to gauge anharmonicity and energy repartitioning in atmospheric reactive adducts: Case study of the OH + Isoprene and OH + Butadiene reaction intermediates, Journal of Physical Chemistry A,116, 4108-4128
  • A. M. Bryan, R. Forkel, S. B. Bertman, M. A. Carroll, S. Dusanter, G. D. Edwards, S. Griffith, A. B. Guenther, R. F. Hansen, D. Helmig, T. Jobson, F. N. Keutsch, B. L. Lefer, S. N. Pressley, P. B. Shepson, P. S. Stevens, and A. L. Steiner (2012). In-canopy gas-phase chemistry during the 2009 CABINEX field campaign: Sensitivity to isoprene chemistry and vertical mixing, Atmospheric Chemistry and Physics, 12, 8829-8849
  • M. M. Galloway, J. P. DiGangi, J. R. Hottle, A. J. Huisman, L. H. Mielke, M. Alaghmand, P. B. Shepson, J. Weremijewicz, H. Klavon, F. M. McNea, M. A. Carroll, S. Griffith, R. F. Hansen, S. Dusanter, P. S. Stevens, S. B. Bertman, F. N. Keutsch (2012). Observations and modeling of formaldehyde at the PROPHET mixed hardwood forest site in 2008, Atmospheric Environment, 49, 403-410
  • S. M. Dietrick, A. B. Pacheco, P. S. Stevens, and S. S. Iyengar (2012). The influence of water on anharmonicity, stability and vibrational energy distribution of hydrogen-bonded adducts in atmospheric reactions: Case study of the OH + Isoprene reaction intermediate using ab-initio molecular dynamics, Journal of Physical Chemistry A, 116, 399414
  • D. Kim, P. S. Stevens, and R. A. Hites (2012). Kinetic isotope effects and rate constants for the gas-phase reactions of deuterated toluenes with OH from 298-413 K, International Journal of Chemical Kinetics,44, 821-827
  • K. A. Pratt, L. H. Mielke, P. B. Shepson, A. M. Bryan, A. L. Steiner, J. Ortega, D. Helmig, C. S. Vogel, S. Griffith, S. Dusanter, P. S. Stevens, M. Alaghmand (2012). A one-dimensional model study of individual reactive biogenic volatile organic compounds and their contributions to organic nitrates above a mixed forest, Atmospheric Chemistry and Physics, 12, 10125-10143
  • X. Zhou, N. Zhang, M. TerAvest, J. Hou, D. Tang, S. Bertman, M. Alaghmand, P. B. Shepson, M. A. Carroll , S. Griffith, S. Dusanter, and P. S. Stevens (2011). Photochemical Cycling of Reactive Nitrogen at the Top of the Forest Canopy Surface, Nature Geosciences, 4, 440-443
  • M. A. Navarro, S. Dusanter, R. A. Hites, and P. S. Stevens (2011). Radical dependence of the yields of methacrolein and methyl vinyl ketone from the OH-initiated oxidation of isoprene under NOx-free conditions. Environmental Science and Technology, 45, 923–929
  • D. Kim, P. S. Stevens, and R. A. Hites (2011). Rate constants for the gas-phase reactions of cis-ocimene, β-myrcene, and (E)- β-farnesene with OH and O3 as a function of temperature. Journal of Physical Chemistry A, 115, 500–506
  • L.T. Molina, S. Madronich, J. S. Gaffney, E. Apel, B. de Foy, J. Fast, R. Ferrare, S. Herndon, C. Hostetler, J. L. Jimenez, B. Lamb, A. R. Osornio-Vargas, P. Russell, J. J. Schauer, P. S. Stevens, M. Zavala (2010). An Overview of the MILAGRO 2006 Campaign: Mexico City Emissions and its Transport and Transformation, Atmospheric Chemistry and Physics, 10, 8697-8760
  • M. Baasandorj, S. Griffith, S. Dusanter and P. S. Stevens (2009). Experimental and theoretical studies of the kinetics of the OH + hydroxyacetone reaction as a function of temperature. Journal of Physical Chemistry A, 113, 10495-10502
  • S. Dusanter, D. Vimal, P. S. Stevens, R. Volkamer, L.T. Molina, A. Baker, S. Meinardi, D. Blake, P. Sheehy, A. Merten, E. Fortner, J. Zheng, R. Zhang, W. Junkermann, M. Dubey, T. Rahn, B. Eichinger, P. Lewandowski, J. Prueger, and H. Holder (2009). Measurements of OH and HO2 Concentrations during the MCMA-2006 Field Campaign: Part 2 – Model Comparison and Radical Budget, Atmospheric Chemistry and Physics, 9, 6655-6675
  • S. Dusanter, D. Vimal, P.S. Stevens, R. Volkamer and L. T. Molina (2008). Measurements of OH and HO2 Concentrations during the MCMA-2006 Field Campaign: Part 1 - Deployment of the Indiana University Laser-Induced Fluorescence Instrument. Atmospheric Chemistry and Physics, 9, 1665–1685
  • D. Vimal, A. B. Pacheco, S.S. Iyengar, and P.S. Stevens (2008). Experimental and ab initio dynamical investigations of the kinetics and intra-molecular energy transfer mechanisms for the OH + 1,3-butadiene reaction between 263 and 423 K at low pressure. Journal of Physical Chemistry A, 112, 7227-7237
  • S. Dusanter, D. Vimal, and P.S. Stevens (2008). Measuring tropospheric OH and HO2 by laser-induced fluorescence at low pressure: A comparison of calibration techniques. Atmospheric Chemistry and Physics, 8, 321–340
  • M. Baasandorj and P.S. Stevens (2007). Experimental and theoretical studies of the kinetics of the reactions of OH and OD with 2-methyl-3-buten-2-ol between 300 and 415 K at low pressure. Journal of Physical Chemistry A, 111, 640-649
  • D. Vimal and P.S. Stevens (2006). Experimental and theoretical study of the kinetics of the reactions of OH radicals with acetic acid, acetic acid–d3 and acetic acid–d4 at low pressure. Journal of Physical Chemistry A, 110, 11509-11516
  • M.E. Davis, W. Drake, D. Vimal, and P.S. Stevens (2005). Experimental and theoretical studies of the kinetics of the reactions of OH and OD with acetone and acetone-d6 at low pressure. The Journal of Photochemistry and Photobiology, A: Chemistry, 176, 162-171. Professor R. P. Wayne Special Issue
  • J.D. Raff, P.S. Stevens, and R.A. Hites (2005). Relative Rate and Product Studies of the OH-Acetone Reaction. Journal of Physical Chemistry A, 109, 4728-4735
  • M.E. Davis, C. Tapscott, and P.S. Stevens (2005). Measurements of the kinetics of the OH-initiated oxidation of beta-pinene: Radical propagation in the OH + beta-pinene + O2 + NO reaction system. International Journal of Chemical Kinetics,37,522-531
  • W. Lee, M. Baasandorj, P.S. Stevens, and R.A. Hites (2005). Monitoring the OH-Initiated Oxidation Kinetics of Isoprene and its Products using On-line Mass Spectrometry. Environmental Science and Technology, 39, 1030-1036
  • M.E. Davis and P.S. Stevens (2005). Measurements of the kinetics of the OH-initiated oxidation of alpha-pinene: Radical propagation in the OH + alpha-pinene + O2 + NO reaction system. Atmospheric Environment, 39, 1765-1774
  • B. Chuong and P.S. Stevens (2004). Measurements of the kinetics of the OH-initiated oxidation of methy vinyl ketone and methacrolein. International Journal of Chemical Kinetics, 36, 12-25
  • W. Lee, P.S. Stevens, and R.A. Hites (2003). Rate constants for the gas-phase reactions of methyl-phenanthrenes with OH as a function of temperature. Journal of Physical Chemistry A, 107, 6603-6608
  • B. Chuong and P.S. Stevens (2003). Kinetics of the OH + methyl vinyl ketone and OH + methacrolein reactions at low pressure. Journal of Physical Chemistry A, 107, 2185-2191