University of Houston
Natural Sciences and Mathematics
Department of Earth and Atmospheric Sciences

  • EPA
  • HARC
  • NASA
  • NSF
  • TCEQ
Gary Morris   Curriculum Vitae pdf
gary morries

Adjunct Faculty, Atmospheric Science
Personal Faculty Website

Ph. D., Space Physics and Astronomy, 1995, Rice University
M. 3., Space Physics and Astronomy, 1992, Rice University
A. B., Physics and Mathematics, 1989, Washington University, Tallahassee

Office: 219-464-5516
Fax: 219-464-5489

  • Research Interest
  • Projects
  • Publications
• Authored or co-authored 28 peer-reviewed publications, 10 other publications, more than
75 conference presentations; co-authored and contributed to two ozone-assessment
• Principal or co-Investigator on more than 20 funded research grant proposals totaling
more than $1.5 million
• Developer and lead scientist on Fulbright Scholar Grant field campaign to examine the
outflow of pollution from China and its impact on air quality in Japan (2008 – 2009)
• Working with NASA scientists on the development of two new instruments to measure
atmospheric NOx and tropospheric ozone (2003 – present)
• Developed and principal investigator of the Tropospheric Ozone Pollution Project, which
has gathered the most extensive urban ozone profile data set in the world (2002 – present)
• Developed and leading the Research in Physics Education (RIPE) project (1998 – present)
• Developed a widely employed technique, trajectory mapping, for validating and
understanding atmospheric trace gas observations (1992 – 1994)
• Assigned as key member of field team to South Pole Station, Antarctica to diagnose and
repair electronics for an instrument measuring the atmospheric electrical conduction
current (1991)


  • Morris, G.A., C. Boxe, V. Thouret, A.M. Thompson, B. Lefer, and B. Rappengluck, A
    summertime climatology of tropospheric ozone profiles over Houston, Texas (1994 –
    2009), Atmos. Chem. Phys., in preparation, 2010.
  • Morris, G.A, G. Labow, T. Koide, M. Takigawa, and H. Akimoto, On the use of the
    correction factor with Japanese ozonesonde data, Atmos. Chem. Phys., in preparation,
  • Morris, G.A., R.R. Dickerson, N. Carbonaro, T. Koide, J. Hirokawa, M. Fujiwara, F.
    Hasebe, N. Krotkov, G. Labow, and H. Akimoto, Evidence of Chinese pollution in
    summer ozone profiles over Sapporo, Japan, Geophys. Res. Lett., in preparation, 2010.
  • Taylor, M., B. Rappenglück, G. Morris, B. Lefer, and C. Haman, Evidence for the
    influence of STE on boundary layer ozone in Houston, Texas, J. Geophys. Res., first draft
    completed Oct. 2010, to be submitted in 2011.
  • Tang, W., D.S. Cohan, G.A. Morris, D.W. Byun, W.T. Luke, Influence of vertical
    mixing uncertainties on ozone simulation in CMAQ, Atmos. Environ., accepted with
    minor revisions, Dec. 2010.
  • Morris, G.A., W. Komhyr, J. Hirokawa, J. Flynn, N. Krotkov, and B. Lefer, A balloon
    sounding technique for measuring SO2 plumes, J. Atmos. Ocean. Tech., 27 (8), 1318 –
  • Morris, G.A., A.M. Thompson, K.E. Pickering, S. Chen, E.J. Bucsela, and P.A. Kucera,
    Observations of ozone production in a dissipating tropical convective cell during TC4,
    Atmos. Chem. Phys. Discuss., 10, 18,953 – 19,004, 2010; Atmos. Chem. Phys., 10, 11,189
    – 11,208, 2010.
  • Krotkov, N.A., M.R. Schoeberl, G.A. Morris, S. Carn, and K. Yang (2010), Dispersion
    and lifetime of the SO2 cloud from the August 2008 Kasatochi eruption, J. Geophys. Res.,
    115, D00L20, doi:10.1029/2010JD013984.
  • Thompson, A.M., A.M. MacFarlane, G.A. Morris, J.E. Yorks, S.K. Miller, B.F.
    Taubman, G. Verver, H. Vomel, M.A. Avery, J.W. Hair, G.S. Diskin, E.V. Browell, J.V.
    Canossa, T.L. Kucsera, C.A. Klich, and D.L. Hlavka, Convective wave signatures in
    ozone profiles over the equatorial Americas: Views from TC4 (2007) and SHADOZ, J.
    Geophys. Res., 115, D00J23, doi:10.1029/2009JD012909, 2010.
  • Morris, G.A., B. Ford, B. Rappengluck, A.M. Thompson, A. Mefferd, F. Ngan, and B.
    Lefer, An evaluation of the interaction of morning residual layer and afternoon mixed
    layer ozone in Houston using ozonesonde data, Atmos. Environ., 44,
    doi:10.1016/j.atmosenv.2009.06.057, 4024 – 4034, 2010.
  • Pierce, R.B., J. Al-Saadi, C. Kittaka, T. Schaack, A. Lenzen, K. Bowman, J. Szykman, A.
    Soja, T. Ryerson, A.M. Thompson, P. Bhartia, and G.A. Morris, Impacts of background
    ozone production on Houston and Dallas, TX air quality during the TexAQS field
    mission, J. Geophys. Res., 114, D00F09, doi:10.1029/2008JD011337, 2009.
  • Rappenglück, B., R. Perna, S. Zhong, and G.A. Morris, An analysis of the vertical
    structure of the atmosphere and the upper-level meteorology and their impact on surface
    ozone levels in Houston, TX, J. Geophys. Res., 113, D17315,
    doi:10.1029/2007JD009745, 2008.
  • Fishman, J., K.W. Bowman, J.P. Burrows, A. Richter, K.V. Chance, D.P. Edwards, R.V.
    Martin, G.A. Morris, R.B. Pierce, J.R. Ziemke, J.A. Al-Saadi, T.K. Schaack, and A.M.
    Thompson, Remote sensing of tropospheric pollution from space, Bull. Am. Meteorol.
    Soc., 89, 6, 805 – 821, 2008.
  • Thompson, A.M., J.E. Yorks, S.K. Miller, J.C. Witte, K.M. Dougherty, G.A. Morris, D.
    Baumgardner, L. Ladino, and B. Rappenglück, Free tropospheric ozone sources and wave
    activity over Mexico City and Houston during MILAGRO/Intercontinental Transport
    Experiment (INTEX-B) ozonesonde network study, 2006 (IONS-06), Atmos. Chem.
    Phys., 8, 5113 – 5125, 2008.
  • Nassar, R., J.A. Logan, H.M. Worden, I.A. Megretskaia, K.W. Bowman, G.B. Osterman,
    A.M. Thompson, D.W. Tarasick, S. Austin, H. Claude, M.K. Dubey, W.K. Hocking, B.J.
    Johnson, E. Joseph, J. Merrill, G.A. Morris, M. Newchurch, S.J. Otlmans, F. Posny, F.J.
    Schmidlin, H. Vömel, D.N. Whiteman, J.C. Witte, Validation of Tropospheric Emission
    Spectrometer (TES) Nadir Ozone Profiles Using Ozonesonde Measurements, J. Geophys.
    Res., 113, D15S17, doi:10.1029/2007JD008819, 2008.
  • Cooper, O.R, M. Trainer, A.M. Thompson, S.J. Oltmans, D.W. Tarasick, J.C. Witte, A.
    Stohl, S. Eckhardt, J. Lelieveld, M.J. Newchurch, B.J. Johnson, R. W. Portmann, L.
    Kalnajs, M.K. Dubey, T. Leblanc, I.S. McDermid, G. Forbes, D. Wolfe, T. Carey-Smith,
    G.A. Morris, B. Lefer, B. Rappenglück, E. Joseph, F. Schmidlin, J. Meagher, F.C.
    Fehsenfeld, T.J. Keating, R.A. VanCuren, and K. Minschwaner, Evidence for a recurring
    eastern North America upper tropospheric ozone maximum during summer, J. Geophys.
    Res., 112, D23304, doi: 10.1029/2007JD008710, 2007.
  • Jiang, Y.B., L. Froidevaux, A. Lambert, N.J. Livesey, W.G. Read, J.W. Waters, B.
    Bojkov, T. Leblanc, I.S. McDermid, S. Godin-Beckmann, M.J. Filipiak, R.S. Harwood,
    R.A. Fuller, W.H. Daffer, B.J. Drouin, R.E. Cofield, D.T. Cuddy, R.F. Jarnot, B.W.
    Knosp, V.S. Perun, M.J. Schwartz, W.V. Snyder, P.C. Stek, R.P. Thurstans, P.A.
    Wagner, M. Allaart, S.B. Andersen, G. Bodeker, B. Calpini, H. Claude, G. Coetzee, J.
    Davies, H. De Backer, H. Dier, M. Fujiwara, B. Johnson, H. Kelder, N.P. Leme, G.
    König-Langlo, E. Kyro, G. Laneve, L.S. Fook, J. Merrill, G. Morris, M. Newchurch, S.
    Oltmans, M.C. Parronondos, F. Posny, F. Schmidlin, P. Skrivankova, R. Stubi, D.
    Tarasick, A. Thompson, V. Thouret, P. Viatte, H. Vömel, P. von der Gathen, M. Yela,
    and G. Zablocki, Validation of Aura Microwave Limb Sounder ozone by ozonesonde and
    lidar measurements, J. Geophy. Res., 112, D24S34, doi: 10.1029/2007JD008776, 2007.
  • Schoeberl, M.R., J.R. Ziemke, B. Bojkov, N. Livesey, B. Duncan, S. Strahan, L.
    Froidevaux, S. Kulawik, P.K. Bhartia, S. Chandra, P.F. Levelt, J.C. Witte, A.M.
    Thompson, E. Cuevas, A. Redondas, D.W. Tarasick, J. Davies, G. Bodeker, G. Hansen,
    B.J. Johnson, S.J. Oltmans, H. Vomel, M. Allaart, H. Kelder, M. Newchurch, S. Goldin-
    Beekmann, G. Ancellet, H. Claude, S.B. Andersen, E. Kyro, M. Parrondons, M. Yela, G.
    Zablocki, D. Moore, H. Dier, P. von der Gathen, P. Viatte, R. Stubi, B. Calpini, P.
    Skrivankova, V. Dorokhov, H. de Backer, F. J. Schmidlin, G. Coetzee, M. Fujiwara, V.
    Thoret, F. Posny, G. Morris, J. Merrill, C.P. Leong, G. König-Langlo, and E. Joseph, A
    trajectory-based estimate of the tropospheric column ozone column using the residual
    method, J. Geophys. Res., 112, D18105, doi: 10.1029/2007JD008773, 2007.
  • Tarasick, D.W., M.D. Moran, A. Thompson, T. Carey-Smith, Y. Rochon, V.S. Bouchet,
    W. Gong, P.A. Makar, C. Stroud, S. Ménard, L.-P. Crevier, S. Cousineau, J.A.
    Pudykiewicz, A. Kallaur, R. Moffet, R. Ménard, A. Robichaud, O.R. Cooper, S.J.
    Oltmans, J.C. Witte, G. Forbes, B.J. Johnson, J. Merrill, G. Morris, M.J. Newchurch,
    F.J. Schmidlin, and E. Joseph, Comparison of Canadian air quality forecast models with
    tropospheric ozone profile measurements above mid-latitude North America during
    IONS/ICARTT campaign: Evidence for stratospheric input, J. Geophys. Res., 112,
    D12S22, doi:10.1029/2006JD007782, 2007.
  • Thompson, A.M., J.B. Stone, J.C. Witte, S.K. Miller, R.B. Pierce, R.B. Chatfield, S.J.
    Oltmans, O.R. Cooper, A.L. Loucks, B.F. Taubman, B.J. Johnson, E. Joseph, T.L.
    Kucsera, J.T. Merrill, G.A. Morris, S. Hersey, G. Forbes, M.J. Newchurch, F.J.
    Schmidlin, D.W. Tarasick, V. Thouret, J.-P. Cammas, Intercontinental Chemical
    Transport Experiment Ozonesonde Network Study (IONS) 2004: 1 Summertime upper
    troposphere/lower stratosphere ozone over northeastern North America, J. Geophys. Res.,
    112, D12S12, doi:10.1029/2006JD007441, 2007.
  • Morris, G.A., S. Hersey, A.M. Thompson, S. Pawson, J. Eric Nielsen, P.R. Colarco,
    W.W. McMillan, A. Stohl, S. Turquety, J. Warner, B.J. Johnson, T.L. Kucsera, D.E.
    Larko, S.J. Oltmans, and J.C. Witte, Alaskan and Canadian forest fires exacerbate ozone
    pollution over Houston, Texas, on 19 and 20 July 2004, J. Geophys. Res., 111, D24S03,
    doi:10.1029/2006JD007090, 2006.
  • Morris, G.A., L. Branum-Martin, N. Harshman, S.D. Baker, E. Mazur, S. Dutta, T.
    Mzoughi, and V. McCauley, Testing the test: Item response curves and test quality, Am.
    J. Phys., 74, 449 – 453, 2006.
  • Cooper, O.R., A. Stohl, M. Trainer, A. Thompson, J.C. Witte, S.J. Oltmans, B.J. Johnson,
    J. Merrill, J.L. Moody, G. Morris, D. Trasick, G. Forbes, P. Nedelec, F.C. Fehsenfeld, J.
    Meagher, M.J. Newchurch, F.J. Schmidlin, S. Turquety, J.H. Crawford, K.E. Pickering,
    R.C. Cohen, T. Bertarm, P. Wooldrige, and W.H. Brune, Large upper tropospheric ozone
    enhancement sabove mid-latitude North America during summer: In situ evidence from
    the IONS and MOZAIC ozone monitoring network, J. Geophys. Res., 111, D24S05, doi:
    10.1029/2006JD007306, 2006.
  • Morris, G.A., M.R. Schoeberl, B. Bojkov, and L.R. Lait, A review of the Match
    technique as applied to SOLVE/THESEO and AASE-2/EASOE, Atmos. Chem. Phys.
    Disc., 4, 4665 – 4717, 2004; Atmos. Chem. Phys., 5, 2571 – 2592, 2005.
  • Morris, G.A., M.R. Schoeberl, J.E. Rosenfield, and C.H. Jackman, The potential impact
    of subsonic and supersonic aircraft exhaust on water vapor in the lower stratosphere
    assessed via a trajectory model, J. Geophys. Res., 108 (D3), 10.1029/2002JD002614, 06
    February 2003.
  • Morris, G.A., J.F. Gleason, J.M. Russell, III, M.R. Schoeberl, and J.P. McCormick, A
    comparison of HALOE V19 with SAGE II V6.00 ozone observations using trajectory
    mapping, J. Geophys. Res., 107 (D13), 10.1029/2001JD000847, 12 July 2002.
  • Morris, G.A., J. Ziemke, J. Gleason, and M.R. Schoeberl, Trajectory mapping: A tool
    for satellite data validation, J. Geophys. Res., 105, 17,875-17,894, 2000.
  • Schoeberl, M.R., and G. A. Morris, A Lagrangian simulation of subsonic and supersonic
    aircraft exhaust emissions, J. Geophys. Res., 105, 11,833-11,839, 2000.
  • Morris, G.A., S.R. Kawa, A.R. Douglass, M.R. Schoeberl, L. Froidevaux, and J. Waters,
    Low ozone “pockets” explained, J. Geophys. Res., 103, 3599-3610, 1998.
  • Morris, G.A., D.B. Considine, A.E. Dessler, S.R. Kawa, A.E. Roche, J. Kumer, and J.M.
    Russell, III, Nitrogen partitioning in the middle stratosphere as observed by the Upper
    Atmosphere Research Satellite, J. Geophys. Res., 102, 8955-8965, 1997.
  • Dessler, A.E., D.B. Considine, G.A. Morris, M.R. Schoeberl, A.E. Roche, J.L.
    Mergenthaler, J.M. Russell, J.W. Waters, J.C. Gille, and G.K. Yue, Correlated observations
    of HCl and ClONO2 from UARS and implications for stratospheric chlorine partitioning,
    Geophys. Res. Lett., 22, 1721-1724,1995.
  • Morris, G.A., M.R. Schoeberl, L. Sparling, P.A. Newman, L.R. Lait, L. Elson, J. Waters,
    A.E. Roche, J. Kumer, and J.M. Russell, III, Trajectory mapping and applications to data
    from the Upper Atmosphere Research Satellite, J. Geophys. Res., 100, 16,491-16,505, 1995.
  • Byrne, G.J., J.R. Benbrook, E.A. Bering, A.A. Few, G.A. Morris, W.J. Trabucco, and E.W.
    Paschal, Ground-based instrumentation for measurements of atmospheric conduction current
    and electric field at the South Pole, J. Geophys. Res., 98, 2611-2618, 1993.


  • Muller, R., R. J. Salawitch, et al., contributors include G.A. Morris, Chapter 6: Upper
    Stratospheric Processes in Scientific Assessment of Ozone Depletion: 1998, WMO, 44,
  • Russell, J.M., H.G.J. Smit, et al., co-authors include G.A. Morris, Chapter 2: Data Quality
    in Assessment of Trends in the Vertical Distribution of Ozone, WCRP-SPARC, 1, 1998.
  • Morris, G.A. “A Demonstration and Evaluation of Trajectory Mapping.” Ph.D.
    Thesis, Rice University, August 1994.
  • Bering, E.A., J.R. Benbrook, R. Chadwick, G.J. Byrne, A.A. Few, and G.A. Morris,
    Feasibility of long term vertical electric current measurements in the Antarctic,
    Antarctic J. of the U.S., XXVIII, 5, 314-317, 1993.
  • Morris, G.A. “Background and Early Results for the Atmospheric Electrical Current
    Sensor Project.” Master's Thesis, Rice University, 1992.
  • Bering, E.A., J.R. Benbrook, R. Chadwick, G.J. Byrne, A.A. Few, and G.A. Morris,
    Magnetospheric influences on atmospheric electricity at the South Pole Station,
    Proceedings of the Ninth International Conference on Atmospheric Electricity 1992,
    Volume 1, 476-479, A.I. Voeikor Main Geophysical Observatory, St. Petersburg, Russia,
  • Few, A.A., G.A. Morris, E.A. Bering, J.R. Benbrook, R. Chadwick, and G.J. Byrne,
    Maxwell current measurements at the South Pole: Evaluation of measurements and
    instrument performance, Proceedings of the Ninth International Conference on
    Atmospheric Electricity 1992, Volume 1, 23-26, A.I. Voeikor Main Geophysical
    Observatory, St. Petersburg, Russia, 1992.
  • Few, A.A., G.A. Morris, E.A. Bering, J.R. Benbrook, R. Chadwick, and G. J. Byrne,
    Surface observations of global atmospheric electric phenomena at Amundsen-Scott
    South Pole Station, Antarctic J. of the U.S., XXVII, 5, 307-309, 1992.
  • Byrne, G.J., E.A. Bering, A.A. Few, and G.A. Morris, Measurements of atmospheric
    conduction currents and electric fields at the South Pole, Antarctic J. of the U.S., XXVI,
    5, 291-294, 1991.
  • Bering, E.A., G.J. Byrne, A.A. Few, and G.A. Morris, Initial results from
    measurements of atmospheric conduction currents and electric fields at the South Pole,
    Antarctic J. of the U.S., XXVI, 5, 294-296, 1991.