Curriculum Vitae- Atmosphereic Science

Curriculum Vitae

DeMott, Paul J., Ph.D. Senior Research Scientist/Scholar

A. Vital Statistics
Born: November 23, 1957; US Citizen.
Current Position: Senior Research Scientist/Scholar
Department of Atmospheric Science
Colorado State University
Fort Collins, CO 80523
(970) 491-8257 Fax: (970) 491-8483
Internet: [email protected]
Web: [link to lamar.colostate.edu]

B. Education
• B.S. Atmospheric Science, State University of New York at Albany (1979)
• M.S. Atmospheric Science, Colorado State University (1982)
• Ph.D. Atmospheric Science, Colorado State University (1990)

C. Professional Experience

2002-present: Senior Research Scientist/Scholar, Department of Atmospheric Science, Colorado State University

1995-2002: Research Scientist, Department of Atmospheric Science, Colorado State University
Research focus is on ice formation by atmospheric aerosols in tropospheric clouds. Approaches include laboratory, observational and numerical modeling studies.
Activities: Conceive and direct laboratory research projects, execute and analyze laboratory experiments, collect and analyze field data, perform numerical cloud model simulations, software development, conduct laboratory contract research with private industry and write summary reports, write research proposals and technical papers, make presentations at scientific conferences, supervise research of graduate students and postdoctoral fellows, supervise technical and work-study personnel, participate on national and international scientific working groups and panels, peer review.
Research Grants worked on as Principal or Co-Principal Investigator:
· Aerosol Effects on Warm and Cold Clouds (laboratory studies) (NSF: 2004-2007)
· Ice Nuclei Measurements in the Mixed Phase Arctic Clouds Experiment (DOE: 2004-2005)
· Collaborative Research: Physical and Chemical Impacts on the Ice Nucleating Properties of Atmospheric Particles in Springtime (NSF Atmospheric Chemistry: 2003-2005)
· The Role of Ice Nuclei in the Evolution of Supercooled and Mixed-phase Clouds (NSF Physical Meteorology: 2003-2005)
· Upper Troposphere Ice Nuclei Measurements in the Cirrus Regional Study of Tropical Anvils and Cirrus Layers – Florida Area Cirrus Experiment (NASA: 2002-2003)
· Single Particle Mass Spectroscopy of Ice Nucleating Particles (NSF Atmospheric Chemistry: 2001-2003)
· Studies of Ice Formation in Upper Tropospheric Conditions (NSF Physical Meteorology: 1997-2004)
· Freezing Characteristics of Soot/Sulfate Aerosols (NASA-Atmospheric Effects of Aviation Program: 1998-2002)
· Relations between Ice Nuclei and Ice Formation in Clouds (NSF: 1998-2001) – NSF Lake Induced Convection Experiment and CSU-led Wave Cloud Ice Nuclei and Crystal Experiment.
· Ice Nuclei Measurements in the Subsonic Aircraft Contrail and Cloud Effects Special Study (NASA:1995-1998)

1985-1995: Research Associate, Department of Atmospheric Science, Colorado State University
Co-Principal Investigator on research grants:
· Laboratory and Numerical Model Studies on Ice Formation in Clouds (NSF Physical Meteorology)
· Condensation and Ice Nucleation Kinetics at Low Temperatures and Pressures (US Air Force)
· Winter Icing in Storms Project (NCAR/NSF: 1993-1994)
· North Dakota Tracer Experiment (NOAA/CIRA: 1993)
Director, Cloud Simulation and Aerosol Laboratory

1979-1985: Graduate Research Assistant, Department of Atmospheric Science, Colorado State University
Projects worked on:
§ Colorado Orographic Seeding Experiments (NSF: 1979-1985)
§ Condensation and Ice Nucleation Kinetics at Low Temperatures and Pressures (US Air Force)

D. Professional Societies and Activities
§ American Meteorological Society: Subject Matter Editor, Bulleting of the American Meteorological Society (2004-present); Associate Editor, Journal of Applied Meteorology (1996-2001); Committee on Cloud Physics (1997-2000); Committee on Planned and Inadvertent Weather Modification (1991-1994)
§ American Geophysical Union: Nominee Atmospheric Physics and Dynamics Secretary (2005); Session Convenor Fall Meeting 2004; Session Chair Fall Meeting 2002
§ International Association of Meteorology and Atmospheric Sciences: International Commission on Clouds and Precipitation (IAMAS-ICCP) (2004-present); Committee on Nucleation and Atmospheric Aerosols (2001-present), Co-Chair (2004-present)
§ American Association for Aerosol Research
§ NCAR Ice Initiative Steering Committee (2003-present)
§ Intergovernmental Panel on Climate Change: Contributing author to Third Assessment Report – Climate Change 2001
§ GEWEX Cloud Systems Studies Working Group II - Cirrus (1998-present)
§ Weather Modification Association: Editorial Board (1988-1991)
§ North Dakota Tracer Experiment Planning Committee (1992-1993)
§ Winter Icing in Storms Project Steering Committee (1994 -1997)
§ NASA-SUCCESS II Planning Committee (1998-1999)
§ Peer reviewer (Journal of Geophysical Research, Geophysical Research Letters, Journal of the Atmospheric Sciences, Journal of Applied Meteorology, Journal of Atmospheric and Oceanic Technology, Journal of Physical Chemistry, Chemical Reviews, Atmospheric Chemistry and Physics, Atmospheric Environment, Atmospheric Research, Journal of Weather Modification, NSF, NOAA, NASA, DOE, National Research Council, National Center for Atmospheric Research, ETHZ-Switzerland, Canadian Foundation on Climate and the Atmospheric Sciences, American Chemical Society Petroleum Research Fund, Research Corporation)

E. Publications
Author of more than 40 papers published in refereed scientific journals, 1 book chapter, more than 50 conference papers, more than 40 formal reports to private and public institutions, numerous annual and final reports on research grants. Selected papers:
Petters, M.D., S.M. Kreidenweis, J.R. Snider, K. Koehler, Q. Wang, A.J. Prenni, and P.J. DeMott, 2005: Cloud formation on polymerized organic aerosols. Submitted to Tellus.
Prenni, A.J., P.J. DeMott, C.H. Twohy, M. Poellot, A. Bansemer, and S. M. Kreidenweis, 2005: Ice nuclei measurements of residual particles from anvil cirrus ice crystals and inferences to ice formation mechanisms in Florida cumuli. In preparation for submission to J. Geophys. Res.
Archuleta, C.A., P.J. DeMott, and S.M. Kreidenweis, 2005: Ice nucleation by surrogates for atmospheric mineral dusts and mineral dust/sulfate particles at cirrus temperatures. Atmos. Chem. Phys. Disc., 5, 3391–3436, 2005.
Brooks, S.D., A.J. Prenni, P.J. DeMott, M.D. Petters and S.M. Kreidenweis, 2005a: Ice nucleation by internally mixed particles containing ammonium sulfate and dicarboxylic acids. In preparation for submission to J. Geophys. Res.
Brooks, S.D., K. Koehler, J.B. Snider, M.D. Petters, P. J. DeMott, and S.M. Kreidenweis, 2005b: Investigation of aerosol particles containing humic materials as cloud condensation nuclei. In preparation for submission to J. Geophys. Res..
Koehler, K., S.M. Kreidenweis, and P. J. DeMott, 2005: Cloud condensation activity of atmospheric aerosols. Part II: Application to organic species. In preparation for submission to Atmospheric Chemistry and Physics.
Kreidenweis, S. M., K. Koehler, P.J. DeMott, A. J. Prenni, C. Carrico, and B. Ervens, Water activity and activation diameters from hygroscopicity data – Part I: Theory and application to inorganic salts, Atmospheric Chemistry and Physics, 5, 1357–1370, 2005.
Van den Heever, S.C., G. Carrio, W.R. Cotton, P. J. DeMott and A.J. Prenni, 2005: Impacts of nucleating aerosol on Florida convection. Part I: Mesoscale simulations. Accepted to J. Atmos. Sci.
Lin, R.F., D. O’C. Starr, J. Reichardt, and P J. DeMott, 2005: Nucleation in Synoptically Forced Cirrostratus, J. Geophys. Res., 110, D8, D08208, 10.1029/2004JD005362.
Phillips, V.T.J., S.C. Sherwood, C. Andronache, A. Bansemer, W.C. Conant, P.J. DeMott, R.C. Flagan, A. Heysmfield, H. Jonsson, M. Poellot, J.H. Seinfeld, T. Vanreken, V. Varutbangkul and J.C. Wilson, 2005: Anvil Glaciation in a Deep Cumulus Updraft over Florida Simulated with an Explicit Microphysics Model. Part I - The Impact of Various Nucleation Processes. Q.J. Royal Met. Soc. (in press).
Cziczo, D.J., P. J. DeMott, S. D. Brooks, A. J. Prenni, D. S. Thomson, D. Baumgardner, J. C. Wilson, S. M. Kreidenweis, and D. M. Murphy, 2004: Observations of organic species and atmospheric ice formation, Geophys. Res. Lett., 31, 12116, doi:10.1029/2004GL019822.
Brooks, S.D., P.J. DeMott and S.M. Kreidenweis, 2004a: Water Uptake by Particles Containing Humic Materials and Mixtures of Humic Materials with Ammonium Sulfate. Atmos. Environ., 38, 1859-1868.
DeMott, P.J., D.J. Cziczo, A.J. Prenni, D.M. Murphy, S.M. Kreidenweis, D.S. Thomson, R. Borys and D.C. Rogers, 2003: Measurements of the concentration and composition of nuclei for cirrus formation. Proceedings of the National Academy of Sciences, 100, No. 25, 14655-14660.
DeMott, P.J., K. Sassen, M. Poellot, D. Baumgardner, D.C. Rogers, S. Brooks, A.J. Prenni, and S.M. Kreidenweis, 2003: African dust aerosols as atmospheric ice nuclei. Geophys. Res. Lett., 30, No. 14, 1732, doi:10.1029/2003GL017410.
Cziczo, D.J., P.J. DeMott, C. Brock, P.K. Hudson, B. Jesse, S.M. Kreidenweis, A.J. Prenni, J. Schreiner, D.S. Thomson, and D.M. Murphy, 2003: A Method for Single Particle Mass Spectroscopy of Ice Nuclei. Aerosol Sci. and Technol., 37, 460-470.
Prenni, A.J., P.J. DeMott, and S.M. Kreidenweis, 2003: Water uptake of internally mixed particles containing ammonium sulfate and dicarboxylic acids. Atmos. Environ., 37, 4243-4251.
Sassen, K., P.J. DeMott, J. Prospero, and M.R. Poellot , 2003: Saharan Dust Storms and Indirect Aerosol Effects on Clouds: CRYSTAL-FACE Results. Geophys. Res. Lett., 30, No. 12, 1633, doi:10.1029/2003GL017371.
DeMott, P.J., 2002: Laboratory studies of cirrus cloud processes, Chapter 5 in Cirrus, D.K. Lynch, K. Sassen, D.O.C Starr, G. Stephens Eds., Oxford University Press, New York.
Lin, R-F., D.O.C Starr, P.J. DeMott, R. Cotton, K. Sassen, E. Jensen, B. Karcher, and X. Liu, 2002: Cirrus parcel model comparison project phase 1: The critical components to simulate cirrus initiation explicitly, J. Atmos. Sci., 59, 2305-2329.
Prenni, A.J., P.J. DeMott, S.M. Kreidenweis, D.E. Sherman, L.M. Russell and Y. Ming, 2001: The effects of low molecular weight dicarboxylic acids on cloud formation. J. Phys. Chem. A., 105, 11240-11248.
Rogers, D.C., P.J. DeMott, S.M. Kreidenweis and Y. Chen, 2001: A continuous flow diffusion chamber for airborne measurements of ice nuclei, J. Atmos. Oceanic Technol., 18, 725-741.
Rogers, D.C., P.J. DeMott, and S.M. Kreidenweis, 2001: Airborne measurements of tropospheric ice nucleating aerosol particles in the Arctic Spring, J. Geophys. Res., 106, 15,053-15,063.
Chen, Y, P.J. DeMott, S.M. Kreidenweis, D.C. Rogers and D. Eli Sherman, 2000: Ice formation by sulfate and sulfuric acid aerosol particles under upper tropospheric conditions, J. Atmos. Sci., 57, 3752-3766.
Prenni, A.J, R.L. Siefert, T.B. Onasch, M.A. Tolbert and P.J. DeMott, 2000: Design and characterization of a fluidized bed aerosol generator: A source for dry, sub-micrometer aerosol. Aerosol Sci. and Technol., 32, 465-481.
DeMott, P.J., Y. Chen, S.M. Kreidenweis, D.C. Rogers and D. Eli Sherman, 1999: Ice formation by black carbon particles, Geophys. Res. Lett., 26, 2429-2432.
Chen, Y., S.M. Kreidenweis, L.M. McInnes, D.C. Rogers and P.J. DeMott, 1998: Single particle analyses of ice nucleating particles in the upper troposphere and lower stratosphere, Geophys. Res. Lett., 25, 1391-1394.
DeMott P.J., D.C. Rogers, S.M. Kreidenweis, Y. Chen. C.H. Twohy, D. Baumgardner, A.J. Heymsfield, and K.R. Chan., 1998: The role of heterogeneous freezing nucleation in upper tropospheric clouds: Inferences from SUCCESS, Geophys. Res. Lett., 25, 1387-1390.
Franc, G. D. and P.J. DeMott, 1998: Cloud activation characteristics of airborne Erwinia carotovara cells. J. Appl. Meteor., 37, 1293-1300.
Kreidenweis, S.M., Y. Chen, P.J. DeMott, and D.C. Rogers, 1998: Isolating and identifying atmospheric ice-nucleating aerosols: A new technique. Atmospheric Research, 46, 263-278.
Rogers, D.C., P.J. DeMott, S.M. Kreidenweis, and Y. Chen, 1998: Measurements of ice nucleating aerosols during SUCCESS, Geophys. Res. Lett., 25, 1383-1386.
DeMott, P.J., S.M. Kreidenweis, and D.C. Rogers, 1997: The susceptibility or ice formation in upper tropospheric clouds to insoluble aerosol components. J. Geophys. Res., 102, 19575-19584.
DeMott, P.J., 1995: Quantitative descriptions of ice formation mechanisms of silver iodide-type aerosols. Atmospheric Research, 38, 63-99.
DeMott, P.J, M.P. Meyers, and W.R. Cotton, 1994: Parameterization and impact of ice initiation processes relevant to numerical model simulations of cirrus clouds. J. Atmos. Sci., 51, 77-90.
Rogers, D.C., P.J. DeMott and L.O. Grant, 1994: Concerning primary ice nuclei concentrations and water supersaturation in the atmosphere. Atmospheric Research, 33, 151-168.
Stith, J.L., D.A. Burrows, and P.J. DeMott, 1994: Initiation of ice: comparison of numerical model results with observations of ice development in a cumulus cloud. Atmospheric Research, 32, 13-30.
Meyers, M.P., P.J. DeMott, and W.R. Cotton, 1992: New primary ice nucleation parameterizations in an explicit cloud model. J. Appl. Meteor., 31, 708-721.
Rogers, D.C., and P.J. DeMott, 1991: Advances in laboratory cloud physics 1987 - 1990. Rev. of Geophys., 29, Supplement Vol. 1, 80-87.
DeMott, P.J., 1990: An exploratory study of ice nucleation by soot aerosols. J. Appl. Meteor., 29, 1072-1079.
DeMott, P.J. and D.C. Rogers, 1990: Freezing nucleation rates of dilute solution droplets measured between -30 and -40C in laboratory simulations of natural clouds. J. Atmos. Sci., 47, 1056-1064.
Borys, R.D., E.E. Hindman, and P.J. DeMott, 1988: The chemical fractionation of atmospheric aerosol as a result of snow crystal formation and growth. J. Atmos. Chem., 7, 213-239.
DeMott, P.J., W.G. Finnegan and L.O. Grant, 1983: An application of chemical kinetic theory and methodology to characterize the ice nucleating properties of aerosols used in weather modification. J. Clim. Appl. Meteor., 22, 1190-1203.

F. Invitations and Presentations
More than 50 presentations made at scientific conferences and meetings. Selected ones:
Invited lecture, “Aerosol chemistry and ice clouds”. IGAC Specialty Conference on Aerosol Indirect Effects, Manchester, England, January, 2005.
Invited talk, “Aerosol-ice cloud interactions”, Session on Aerosol Cloud Interactions at European Geophysical Society/American Geophysical Union/Eurpoean Union of Geophysics Joint Meeting, Nice, France, April, 2003.
Invited talk, “The Physics and Chemistry of Aerosol Indirect Effects on Ice-phase Clouds” for the Colorado State University Department of Atmospheric Science 40th Anniversary, July 2002
Invited seminar, “Atmospheric Particulate Matter and Cirrus Clouds”. CSU chapter of Sigma Xi National Research Honor Society, Ft. Collins, CO, November 2001
Invited Seminar, “Measurements and modeling of ice formation by aerosols in upper tropospheric conditions”, Atmospheric Chemistry Group, Harvard Univ., December 2000
Invited participant, National Research Council workshop on "Addressing the Current State of Weather Modification Science as a Basis for Future Environmental Sustainability and Policy Development," November 2000
Invited seminar, “Measurements and modeling of ice phase transitions by aerosol particles in upper tropospheric conditions”, Dept. of Geophysical Sciences, University of Chicago, November 1999
Invited lecture, “Laboratory studies of cirrus cloud processes”, Topical Cirrus Conference, Optical Society of America Annual Meeting, Baltimore, MD, October 1998
Invited seminar, “Measurements on ice formation in upper tropospheric cloud conditions”, NCAR M3 Division, Boulder, CO, August 1995
Invited lecture, "Research activities at the Colorado State University Cloud Simulation and Aerosol Laboratory", Chinese Academy of Meteorological Sciences, May 1989

G. Awards
Colorado State University Distinguished Service Award, 2003
American Geophysical Union, Geophysical Research Letters Editor’s Citation for Excellence in Peer Review, 2003
NASA Group Achievement Award, Cirrus Regional Study of Tropical Anvils and Cirrus Layers – Florida Area Cirrus Experiment (CRYSTAL-FACE) Science Team, 2003
Best Student Paper, 57th Annual Meeting of the Southwestern and Rocky Mountain Division, AAAS, 22-25 April, 1981, Greeley, CO.

H. Supervisory/Advisory
Person Title Supervisory role Period
Brian Jesse Electronics Technician Immediate supervisor 1986-2005
Mark Branson Work study in Physics/ Immediate supervisor/ 1988-1993
M.S. student informal advising
David Torgerson Work study in Physics Immediate supervisor 1991-1993
Tara Jensen M.S. student Informal advising 1992-1993
Ian Baker M.S. student Supervisor/advising 1993-1994
John Robb Graduate Student hourly Supervisor 1994-1995
Randy Vetter Undergraduate hourly Assistant supervisor 1995
Suzanne Hyde Undergraduate hourly Assistant supervisor 1995
Craig Huey Undergraduate hourly Assistant supervisor 1996
Yalei Chen Ph.D. student Informal advising 1996-1999
Tony Prenni NOAA Postdoctoral Fellow Co-advisor 2000-2002
Cassie Archuleta M.S. student Advising, Committee 2000-2003
Sarah Brooks Postdoctoral Fellow Co-advisor 2002-2004
Kristen Koehler M.S./Ph.D. student Committee member 2002-2005
Matt Richardson Ph.D. student Committee member 2002-2005
Markus Petters Postdoctoral Fellow Co-advisor 2004-2006