Contact Dr. David W. Tarasick:

Phone & Address



Member, American Geophysical Union

Adjunct Professor, York University

Adjunct Professor, University of Western Ontario


Honours B.Sc. in Physics and Mathematics, Trent University

M.Sc. in Physics, l'Université de Montréal

Ph.D. in Physics, York University


Dr. David W. Tarasick

Senior Research Scientist - Atmospheric research using ozonesondes, including field and model process studies of tropospheric ozone

CURRENT S&T / RESEARCH - Conducting research and studies in the following fields:

  • Tropospheric ozone and air quality:  Analysis of ozonesonde data, studies of tropospheric ozone budgets and processes via ozonesondes, dynamical and air quality models. Studies of Arctic surface ozone depletions via ozonesondes and other data
  • Strategic network studies:  IONS (INTEX Ozonesonde Network Study) campaigns; studies of tropospheric ozone budgets and sources over North America, including stratosphere/troposphere exchange (STE) and boreal forest fires, as well as satellite and air quality model validation studies
  • Tropopause processes and dynamics:  Studies of STE via ozonesondes, windprofiler radar, dynamical and air quality models, satellite and other data sources
  • Stratospheric ozone and UV:  Analysis of ozonesonde data; Brewer total ozone and UV data, Balloon-borne measurements of UV and near-IR spectroscopy of middle atmosphere airglow to measure species related to ozone photochemistry
  • Ozone data quality studies: Laboratory, chamber and field work to examine accuracy of response of ozonesondes, particularly to tropospheric ozone


Research scientist responsible for the Canadian Ozonesonde Network

Coordinated BORTAS Intensive Sounding Network (2010-2011) 

Canadian representative on the Ozonesonde Working Group in NDACC

Principal investigator on CFCAS Grant #7042 “Impact of Large-scale Stratospheric Ozone Intrusions on Operational Air Quality Forecast Model Applications” (2008-10)

Canadian principal investigator for ARC-IONS (ARCTAS-INTEX Ozonesonde Network Study) (2008)

Session Convener, “Tropopause Processes and Stratospheric/Tropospheric Exchange”,  2009 MST12 Workshop;  “Processes Over Midlatitude North America and the Arctic (2008) Observed From Satellite and Field Campaigns ”, AGU 2009 Joint Assembly; “Upper Troposphere-Lower Stratosphere (UTLS) processes”, CMOS 2010

Author of more than 50 scientific papers with ~1500 citations


Tarasick, D.W., J.J. Jin, V.E. Fioletov, G. Liu, A.M. Thompson, S.J. Oltmans, J. Liu, C.E. Sioris, X. Liu, O. R. Cooper, T. Dann and V. Thouret. 2010. High-resolution tropospheric ozone fields for INTEX and ARCTAS from IONS ozonesondes, J. Geophys. Res., 115, D20301, doi:10.1029/2009JD012918.

Thompson, A.M., S.J. Oltmans, D.W. Tarasick, P. von der Gathen, H.G.J. Smit and J.C. Witte. 2010. Strategic Ozone Sounding Networks: Review Of Design And Accomplishments. Atmospheric Environment, ISSN 1352-2310, DOI: 10.1016/j.atmosenv.2010.05.002.

Oltmans, S.J., A.S. Lefohn, J.M. Harris, D.W. Tarasick, A.M. Thompson, H. Wernli, B.J. Johnson, P.C. Novelli, S.A. Montzka, J.D. Ray, L.C. Patrick, C. Sweeney, A. Jefferson, T. Dann, J. Davies, M. Shapiro and B.N. Holben (2010), Enhanced ozone over western North America from biomass burning in Eurasia during April 2008 as seen in surface and profile observations. Atmospheric Environment, ,44, (35) 4497-4509, ISSN 1352-2310, DOI: 10.1016/j.atmosenv.2010.07.004.

Cooper, O.R., D.D. Parrish, A. Stohl, M. Trainer, P. Nédélec, V. Thouret, J. P. Cammas, S.J. Oltmans, B.J. Johnson, D. Tarasick, T. LeBlanc, I.S. McDermid, D. Jaffe, R. Gao, J. Stith, T. Ryerson, K. Aikin, T. Campos and A. Weinheimer. 2009. Increasing ozone above western North America during springtime. Nature, 463, 344-348, doi:10.1038/nature08708.

 Pan, L.L., W. J. Randel, J. C. Gille, W.D. Hall, B. Nardi, S. Massie, V. Yudin, R. Khosravi, P. Konopka, and D. Tarasick. 2009. Tropospheric intrusions associated with the secondary tropopause. J. Geophys. Res., 114, D10302, doi:10.1029/2008JD011374.

Liu, G., D.W. Tarasick, V.E. Fioletov, C.E. Sioris, and Y.J. Rochon. 2009. Ozone correlation lengths and measurement uncertainties from analysis of historical ozonesonde data in North America and Europe. J. Geophys. Res., 114, D04112, doi:10.1029/2008JD010576.

Parrington, M., D.B.A. Jones, K.W. Bowman, A.M. Thompson, D.W. Tarasick, J. Merrill, S.J. Oltmans, T. Leblanc, J.C. Witte, and D.B. Millet. 2009. Impact of the assimilation of ozone from the Tropospheric Emission Spectrometer on surface ozone across North America. Geophys. Res. Lett., 36, L04802, doi:10.1029/2008GL036935.

Tarasick, D.W., and R. Slater. 2008. Ozone in the Troposphere: Measurements, Climatology, Budget, and Trends, Atmosphere-Ocean, 46(1), 93-115, doi:10.3137/ao.460105.

Hocking, W.K., T. Carey-Smith, D. Tarasick, S. Argall, K. Strong, Y. Rochon, I. Zawadzki, P. Taylor. 2007. Application of WindProfiler Radars to Identification of Stratospheric Ozone Intrusions and Subsequent Tropospheric Pollution Events. Nature, 450, 281-284, doi:10.1038/nature06312.

Tarasick, D.W., et al. 2007. Comparison of Canadian Air Quality Forecast Models With Tropospheric Ozone Profile Measurements Above Mid-Latitude North America During the IONS/ICARTT Campaign: Evidence for Stratospheric Input. J. Geophys. Res., 112, No. D12, D12S22, doi:10.1029/2006JD007782.

Tarasick, D.W., V.E. Fioletov, D.I. Wardle, J.B. Kerr and J. Davies. 2005. Changes in the vertical distribution of ozone over Canada from ozonesondes: 1980-2001. J. Geophys. Res., 110, D02304, doi:10.1029/2004JD004643.

Tarasick, D.W., V.E. Fioletov, D.I. Wardle, J.B. Kerr, L.J.B. McArthur and C.A. McLinden. 2003. Climatology and trends of surface UV radiation. Atmosphere-Ocean, , 41(2), 121-138.

Tarasick, D.W., and J.W Bottenheim. 2002. Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records. Atmos. Chem. Phys., 2, 197-205.

Tarasick, D.W., J. Davies, K. Anlauf, M. Watt, W. Steinbrecht and H.J. Claude. 2002. Laboratory investigations of the response of Brewer-Mast sondes to tropospheric ozone. J. Geophys. Res., 107(D16), 4308, doi:10.1029/2001JD001167.

Expertise Categories associated with this S&T Expert:

     Air Pollution & Quality
          Atmospheric transport
Arctic & Northern
          Atmospheric environment
Weather & Meteorology
     Atmospheric Modelling
          Environmental prediction
          Remote sensing
          Satellite technology
     Severe Weather