US Mailing Address:

Joel Thornton
Dept. of Atmospheric Sciences
408 ATG Building
University of Washington
Seattle, WA 98195

Phone/fax: 206-543-4010

Department of Atmospheric Sciences
University of Washington
I still look like this
Group Members
Thornton Group Home
Joel Thornton


thornton@atmos.washington.edu


Associate Professor
Photo courtesy of Frank Jenkins



Scientific Interests: atmospheric chemistry, air pollution, climate change



Curriculum Vitae - PDF version


Education

2002-2004         Postdoctoral Fellow, Department of Chemistry, University of Toronto                                                         
2002                  Ph.D., Department of Chemistry, University of California, Berkeley        
1996                  B.A., Dartmouth College; Magna Cum Laude, Honors in Chemistry



Awards and Achievements


2010                 Annual Teaching Award, Department of Atmospheric Sciences, University of Washington
2009                 NSF CAREER Award

2008                 NASA Group Achievement Award for work on the INTEX-B Campaign
2006                 The Henry and Camille Dreyfus Foundation Postdoctoral Program in Environmental Chemistry
2005                 UW Curriculum Development Award
2004-2007        NASA New Investigator Program in Earth Science
   
2003                  Atmospheric Chemistry Colloquium for Emerging Senior Scientists
1999-2002        NASA Earth Systems Science Fellow
2002                 University of California Club of San Francisco Fellowship
2000                 Teaching Effectiveness Award (UC, Berkeley campus-wide competition)
1999                 Outstanding Graduate Student Instructor (Dept. of Chemistry, UC, Berkeley)

1996                 American Chemical Society Award for Excellence in Analytical Chemistry


Professional Activities


Co-Editor of Atmospheric Chemistry and Physics
PNNL LDRD Aerosol Initiative Review Panel
PNNL EMSL Recapitalization Workshop Panel

Co-Chair Atmospheric Chemistry Session Spring 2008 ACS Meeting

Co-Chair Tropospheric Heterogeneous Chemistry and Aerosol Phase Transitions Session Fall 2006 AGU Meeting
Co-Chair Tropospheric Chemistry Session Spring 2004 AGU Meeting

Science Team Member of Following Field Campaigns: SOS99, TOPSE 2000, TEXAQS 2000, INTEX-B 2006, BEARPEX 2007, POLARCAT (ICEALOT) 2008, BEARPEX 2009, CALNEX 2010 - Research Vessel Atlantis, San Joaquin Valley site, Los Angeles Supersite

Member of Following Professional Societies: American Geophysical Union, European Geosciences Union, American Chemical Society, American Meteorological Soceity



Teaching and Mentoring Activities


2004 - current      Courses Taught: Global Atmospheric Chemistry, Fundatmentals of Atmospheric Chemistry, Atmospheric                                                                                         Aerosols and Multiphase Chemistry, Climate and Climate Change, Instruments and Observations
                       
Research Advising (cumulative): 5 undergraduates, 7 graduate students, and 3 postdoctoral fellows

1996-1999          Graduate Student Instructor, UC, Berkeley



Publications (as of September 2010; asterisk, *, denotes PI or corresponding author status)


Choi, W., I. C. Faloona, N. C. Bouvier-Brown, M. McKay, A. H. Goldstein, J. Mao, W. H. Brune, B. W. LaFranchi, R. C. Cohen, G. M. Wolfe, J. A. Thornton, D. M. Sonnenfroh, and D. B. Millet (2010), Observations of elevated formaldehyde over a forest canopy suggest missing sources from rapid oxidation of arboreal hydrocarbons, Atmos. Chem. Phys., 10(18), 8761.

Wolfe, G. M., and J. A. Thornton* (2010), The Chemistry of Atmosphere-Forest Exchange (CAFE) Model, Part 1: Model description and characterization, Atmos. Chem. Phys. Discuss., 10(9), 21721.

Wolfe, G. M., J. A. Thornton*, N. C. Bouvier-Brown, A. H. Goldstein, J. H. Park, M. McKay, D. M. Matross, J. Mao, W. H. Brune, B. W. LaFranchi, E. C. Browne, K. E. Min, P. J. Wooldridge, R. C. Cohen, J. D. Crounse, I. C. Faloona, J. B. Gilman, W. C. Kuster, J. A. de Gouw, A. Huisman, and F. N. Keutsch (2010), The Chemistry of Atmosphere-Forest Exchange (CAFE) Model, Part 2: Application to BEARPEX-2007 observations, Atmos. Chem. Phys. Discuss., 10(9), 21791.

Wooldridge, P. J., A. E. Perring, T. H. Bertram, F. M. Flocke, J. M. Roberts, H. B. Singh, L. G. Huey, J. A. Thornton, G. M. Wolfe, J. G. Murphy, J. L. Fry, A. W. Rollins, B. W. LaFranchi, and R. C. Cohen (2010), Total Peroxy Nitrates (SPNs) in the atmosphere: the Thermal Dissociation-Laser Induced Fluorescence (TD-LIF) technique and comparisons to speciated PAN measurements, Atmos. Meas. Tech., 3(3), 593.

Zaveri, R. A., C. M. Berkowitz, F. J. Brechtel, M. K. Gilles, J. M. Hubbe, J. T. Jayne, L. I. Kleinman, A. Laskin, S. Madronich, T. B. Onasch, M. S. Pekour, S. R. Springston, J. A. Thornton, A. V. Tivanski, and D. R. Worsnop (2010), Nighttime chemical evolution of aerosol and trace gases in a power plant plume, Journal of Geophysical Research-Atmospheres, 115(D12304), doi:10.1029/2009JD013250.

Thornton, J. A.*, J. P. Kercher, T. P. Riedel, N. L. Wagner, J. Cozic, J. S. Holloway, W. P. Dubey, G. M. Wolfe, P. K. Quinn, A. M. Middlebrook, B. Alexander, and S. S. Brown
            (2010), A large atomic chlorine source inferred from mid-continental reactive nitrogen chemistry, Nature, 10.1038/nature08905.

Yatavelli, R., and J. A. Thornton* (2010), Particulate Organic Matter Detection Using a Micro-Orifice Volatilization Impactor Coupled to a Chemical Ionization Mass Spectrometer (MOVI-CIMS), Aerosol Science and Technology, 44(1), 61-74.

Alexander, B., M. G. Hastings, D. J. Allman, J. Dachs, J. A. Thornton, and S. A. Kunasek (2009), Quantifying atmospheric nitrate formation pathways based on a global model of the oxygen isotopic composition (D17O) of atmospheric nitrate, Atmos. Chem. Phys., 9(14), 5043.

Bertram, T. H., and J. A. Thornton* (2009), Toward a general parameterization of N2O5 reactivity on aqueous particles: the competing effects of particle liquid water, nitrate and chloride, Atmos. Chem. Phys., 9(21), 8351.

Bertram, T. H., J. A. Thornton*, A. M. Middlebrook, R. Bahreini, C. A. Brock, P. K. Quinn, T. Bates, D. Coffman, B. Lerner, and E. J. Williams (2009a), Direct measurements of N2O5 reactivity on ambient aerosol particles, Geophysical Research Letters, 36, L19803 doi:19810.11029/12009GL040248.

Bertram, T. H., J. A. Thornton*, and T. P. Riedel (2009b), An experimental technique for the direct measurement of N2O5 reactivity on ambient particles, Atmos. Meas. Tech., 2(1), 231.

Kercher, J. P., T. P. Riedel, and J. A. Thornton* (2009), Chlorine activation by N2O5: simultaneous, in situ detection of ClNO2 and N2O5 by chemical ionization mass spectrometry, Atmos. Meas. Tech., 2(1), 193.

LaFranchi, B. W., G. M. Wolfe, J. A. Thornton*, S. A. Harrold, E. C. Browne, K. E. Min, P. J. Wooldridge, J. B. Gilman, W. C. Kuster, P. D. Goldan, J. A. de Gouw, M. McKay, A. H. Goldstein, X. Ren, J. Mao, and R. C. Cohen (2009), Closing the peroxy acetyl nitrate budget: observations of acyl peroxy nitrates (PAN, PPN, and MPAN) during BEARPEX 2007, Atmos. Chem. Phys., 9(19), 7623.

Reidmiller, D., D. A. Jaffe, D. Chand, S. Strode, P. Swartzendruber, G. Wolfe, and J. A. Thornton (2009), Interannual variability of long-range transport as seen at the Mt. Bachelor Observatory in central Oregon, Atmospheric Chemistry and Physics, 9, 557-572.

Wolfe, G. M., J. A. Thornton*, R. Yatavelli, M. McKay, A. H. Goldstein, B. LaFranchi, R. C. Cohen, W. H. Brune, Z. Chen, and X. Ren (2009), Eddy covariance flux measurements of acyl peroxy nitrates (PAN, PPN, and MPAN) above a Ponderosa pine forest, Atmospheric Chemistry and Physics, 9, 615-634.

Wooldridge, P. J., A. E. Perring, T. H. Bertram, F. M. Flocke, J. M. Roberts, H. B. Singh, L. G. Huey, J. A. Thornton, J. G. Murphy, J. L. Fry, A. W. Rollins, B. W. LaFranchi, and R. C. Cohen (2009), Total peroxy nitrates (SPNs) in the atmosphere: the thermal dissociation-laser induced fluorescence (TD-LIF) technique and comparisons to speciated PAN measurements, Atmos. Meas. Tech. Discuss., 2(6), 3055.

Yatavelli, R., and J. A. Thornton* (2010), Particulate Organic Matter Detection Using a Micro-Orifice Volatilization Impactor Coupled to a Chemical Ionization Mass Spectrometer (MOVI-CIMS), Aerosol Science and Technology, 44(1), 61-74.

Zaveri, R. A., C. M. Berkowitz, F. J. Brechtel, M. K. Gilles, J. M. Hubbe, J. T. Jayne, L. I. Kleinman, A. Laskin, S. Madronich, T. B. Onasch, M. S. Pekour, S. R. Springston, J. A. Thornton, A. V. Tivanski, and D. R. Worsnop (2009), Nighttime chemical evolution of aerosol and trace gases in a power plant plume, Journal of Geophysical Research-Atmospheres, accepted.

Song, C., R. A. Zaveri, M. L. Alexander, J. A. Thornton, S. Madronich, J. V. Ortega, A. Zelenyuk, X. Y. Yu, A. Laskin, and D. A. Maughan (2007), Effect of hydrophobic primary organic aerosols on secondary organic aerosol formation from ozonolysis of alpha-pinene, Geophysical Research Letters, 34(20), L20803

Thornton, J. A.,* L. Jaegle, and V. F. McNeill (2008), Assessing known pathways for HO2 loss in aqueous atmospheric aerosols: Regional and global impacts on tropospheric oxidants, Journal Of Geophysical Research-Atmospheres, 113(D5), D05303.

Wolfe, G. M., J. A. Thornton,* V. F. McNeill, D. A. Jaffe, D. Reidmiller, D. Chand, J. Smith, P. Swartzendruber, F. Flocke, and W. Zheng (2007), Influence of trans-Pacific pollution transport on acyl peroxy nitrate abundances and speciation at Mount Bachelor Observatory during INTEX-B, Atmospheric Chemistry And Physics, 7(20), 5309-5325 

McNeill, V.F.; G.M. Wolfe; J.A. Thornton* Oxidation of Oleate in Sub-Micron Aqueous Salt Particles: Evidence of a Surface Process. Journal Of Physical Chemistry A, 111, 1073-1083, 2007.

 McNeill, V.F., J. Patterson, G.M. Wolfe, and J.A. Thornton*, The effect of varying levels of surfactant on the reactive uptake of N2O5 to aqueous aerosol, Atmospheric Chemistry And Physics, 6, 1635-1644, 2006.

Thornton, J.A.*, Abbatt, J.P.D., N2O5 reaction on submicron sea salt aerosol: Kinetics, products, and the effect of surface active organics, Journal Of Physical Chemistry A, 109, 10004-10012, 2005.

Thornton, J.A.*, Abbatt, J.P.D., Measurements of HO2 uptake to aqueous aerosol: Mass accommodation coefficients and net reactive loss, Journal Of Geophysical Research-Atmospheres, 110, D08309, 2005.

Kwamena, N.O.A., J.A. Thornton, and J.P.D. Abbatt, Kinetics of surface-bound benzo[a]pyrene and ozone on solid organic and salt aerosols, Journal Of Physical Chemistry A, 108(52), 11626-11634, 2004.

Murphy, J.G., J.A. Thornton, P.J. Wooldridge, D.A. Day, R.S. Rosen, C. Cantrell, R.E. Shetter, B. Lefer, and R.C. Cohen, Measurements of the sum of HO2NO2 and CH3O2NO2 in the remote troposphere, Atmospheric Chemistry and Physics, 4, 377-384, 2004.

Rosen, R.S., E.C. Wood, P.J. Wooldridge, J.A. Thornton, D.A. Day, W. Kuster, E.J. Williams, B.T. Jobson, and R.C. Cohen, Observations of total alkyl nitrates during Texas Air Quality Study 2000: Implications for O3 and alkyl nitrate photochemistry, Journal of Geophysical Research-Atmospheres, 109 (D7), 2004.

Thornton, J.A.*, C.F. Braban, and J.P.D. Abbatt, N2O5 hydrolysis on sub-micron organic aerosols: the effect of relative humidity, particle phase, and particle size, Physical Chemistry Chemical Physics, 5 (20), 4593-4603, 2003.

Thornton, J.A., P.J. Wooldridge, R.C. Cohen, E.J. Williams, D. Hereid, F.C. Fehsenfeld, J. Stutz, and B. Alicke, Comparisons of in situ and long path measurements of NO2 in urban plumes, Journal of Geophysical Research-Atmospheres, 108 (D16), 2003

Thornton, J.A., P.J. Wooldridge, R.C. Cohen, M. Martinez, H. Harder, W.H. Brune, E.J. Williams, S.R. Hall, R.E. Shetter, B.P. Wert, B. Henry, A. Fried, and F.E. Fehsenfeld, Observations of ozone production rates as a function of NOx abundances and HOx production rates in the Nashville urban plume, Journal of Geophysical Research, 107 (D12), 2002.

Day, D.A., P.J. Wooldridge, M.B. Dillon, J.A. Thornton, R.C. Cohen, A thermal dissociation – laser induced fluorescence instrument for in situ detection of NO2, peroxy(acyl)nitrates, alkylnitrates, and HNO3, Journal of Geophysical Research, 107 (D6), 2002.

Thornton, J.A., P.J. Wooldridge, and R.C. Cohen, Appendix D: Laser-induced fluorescence detection of NO2, in Recommended Methods for Ambient Air Monitoring of NO, NO2, NOy, and Individual NOz Species, edited by W.A. McClenny, pp. 62-68, Environmental Protection Agency, Research Triangle Park, 2001.

Thornton, J.A., P.J. Wooldridge, R.C. Cohen, Atmospheric NO2: In situ laser-induced fluorescence detection at parts per trillion mixing ratios, Analytical Chemistry, 72 (3), 528-539, 2000.