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

  • EPA
  • HARC
  • NASA
  • NSF
  • TCEQ
  • EDF
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)


  • A summertime climatology of tropospheric ozone profiles over Houston, Texas (1994 – 2009), Morris, G.A., C. Boxe, V. Thouret, A.M. Thompson, B. Lefer, and B. Rappengluck, Atmos. Chem. Phys., in preparation, 2010.
  • On the use of the correction factor with Japanese ozonesonde data, Morris, G.A, G. Labow, T. Koide, M. Takigawa, and H. Akimoto, Atmos. Chem. Phys., in preparation, 2010.
  • Evidence of Chinese pollution in summer ozone profiles over Sapporo, Morris, G.A., R.R. Dickerson, N. Carbonaro, T. Koide, J. Hirokawa, M. Fujiwara, F. Hasebe, N. Krotkov, G. Labow, and H. Akimoto, Japan, Geophys. Res. Lett., in preparation, 2010.
  • Evidence for the influence of STE on boundary layer ozone in Houston, Taylor, M., B. Rappenglück, G. Morris, B. Lefer, and C. Haman, Texas, J. Geophys. Res., first draft completed Oct. 2010, to be submitted in 2011.
  • Influence of vertical mixing uncertainties on ozone simulation in CMAQ, Tang, W., D.S. Cohan, G.A. Morris, D.W. Byun, W.T. Luke, Atmos. Environ., accepted with minor revisions, Dec. 2010.
  • A balloon sounding technique for measuring SO2 plumes, Morris, G.A., W. Komhyr, J. Hirokawa, J. Flynn, N. Krotkov, and B. Lefer, J. Atmos. Ocean. Tech., 27 (8), 1318 –1330, 2010.
  • Observations of ozone production in a dissipating tropical convective cell during TC4, Morris, G.A., A.M. Thompson, K.E. Pickering, S. Chen, E.J. Bucsela, and P.A. Kucera, Atmos. Chem. Phys. Discuss., 10, 18,953 – 19,004, 2010; Atmos. Chem. Phys., 10, 11,189 – 11,208, 2010.
  • Dispersion and lifetime of the SO2 cloud from the August 2008 Kasatochi eruption, Krotkov, N.A., M.R. Schoeberl, G.A. Morris, S. Carn, and K. Yang (2010), J. Geophys. Res., 115, D00L20, doi:10.1029/2010JD013984.
  • Convective wave signatures in ozone profiles over the equatorial Americas: Views from TC4 (2007) and SHADOZ, 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, J. Geophys. Res., 115, D00J23, doi:10.1029/2009JD012909, 2010.
  • An evaluation of the interaction of morning residual layer and afternoon mixed layer ozone in Houston using ozonesonde data, Morris, G.A., B. Ford, B. Rappengluck, A.M. Thompson, A. Mefferd, F. Ngan, and B. Lefer,Atmos. Environ., 44, doi:10.1016/j.atmosenv.2009.06.057, 4024 – 4034, 2010.
  • Impacts of background ozone production on Houston and Dallas, TX air quality during the TexAQS field mission, 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, J. Geophys. Res., 114, D00F09, doi:10.1029/2008JD011337, 2009.
  • An analysis of the vertical structure of the atmosphere and the upper-level meteorology and their impact on surface ozone levels in Houston, TX, Rappenglück, B., R. Perna, S. Zhong, and G.A. Morris, J. Geophys. Res., 113, D17315, doi:10.1029/2007JD009745, 2008.
  • Remote sensing of tropospheric pollution from space, Bull. Am. 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, Meteorol. Soc., 89, 6, 805 – 821, 2008.
  • 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), 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, Atmos. Chem. Phys., 8, 5113 – 5125, 2008.
  • Validation of Tropospheric Emission Spectrometer (TES) Nadir Ozone Profiles Using Ozonesonde Measurements, 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, J. Geophys. Res., 113, D15S17, doi:10.1029/2007JD008819, 2008.
  • Evidence for a recurring eastern North America upper tropospheric ozone maximum during summer, 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, J. Geophys. Res., 112, D23304, doi: 10.1029/2007JD008710, 2007.
  • Validation of Aura Microwave Limb Sounder ozone by ozonesonde and lidar measurements, 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,J. Geophy. Res., 112, D24S34, doi: 10.1029/2007JD008776, 2007.
  • A trajectory-based estimate of the tropospheric column ozone column using the residual method, 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, J. Geophys. Res., 112, D18105, doi: 10.1029/2007JD008773, 2007.
  • 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, 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, J. Geophys. Res., 112, D12S22, doi:10.1029/2006JD007782, 2007.
  • Intercontinental Chemical Transport Experiment Ozonesonde Network Study (IONS) 2004: 1 Summertime upper troposphere/lower stratosphere ozone over northeastern North America, 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, J. Geophys. Res., 112, D12S12, doi:10.1029/2006JD007441, 2007.
  • Alaskan and Canadian forest fires exacerbate ozone pollution over Houston, Texas, on 19 and 20 July 2004, 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, J. Geophys. Res., 111, D24S03, doi:10.1029/2006JD007090, 2006.
  • Testing the test: Item response curves and test quality, Am. Morris, G.A., L. Branum-Martin, N. Harshman, S.D. Baker, E. Mazur, S. Dutta, T. Mzoughi, and V. McCauley, J. Phys., 74, 449 – 453, 2006.
  • Large upper tropospheric ozone enhancement sabove mid-latitude North America during summer: In situ evidence from the IONS and MOZAIC ozone monitoring network, 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, J. Geophys. Res., 111, D24S05, doi: 10.1029/2006JD007306, 2006.
  • A review of the Match technique as applied to SOLVE/THESEO and AASE-2/EASOE, Morris, G.A., M.R. Schoeberl, B. Bojkov, and L.R. Lait, Atmos. Chem. Phys. Disc., 4, 4665 – 4717, 2004; Atmos. Chem. Phys., 5, 2571 – 2592, 2005.
  • The potential impact of subsonic and supersonic aircraft exhaust on water vapor in the lower stratosphere assessed via a trajectory model, Morris, G.A., M.R. Schoeberl, J.E. Rosenfield, and C.H. Jackman, J. Geophys. Res., 108 (D3), 10.1029/2002JD002614, 06
    February 2003.
  • A comparison of HALOE V19 with SAGE II V6.00 ozone observations using trajectory mapping, Morris, G.A., J.F. Gleason, J.M. Russell, III, M.R. Schoeberl, and J.P. McCormick, J. Geophys. Res., 107 (D13), 10.1029/2001JD000847, 12 July 2002.
  • Trajectory mapping: A tool for satellite data validation, Morris, G.A., J. Ziemke, J. Gleason, and M.R. Schoeberl, J. Geophys. Res., 105, 17,875-17,894, 2000.
  • A Lagrangian simulation of subsonic and supersonic aircraft exhaust emissions, Schoeberl, M.R., and G. A. Morris, J. Geophys. Res., 105, 11,833-11,839, 2000.
  • Low ozone “pockets” explained, Morris, G.A., S.R. Kawa, A.R. Douglass, M.R. Schoeberl, L. Froidevaux, and J. Waters, J. Geophys. Res., 103, 3599-3610, 1998.
  • Nitrogen partitioning in the middle stratosphere as observed by the Upper Atmosphere Research Satellite, Morris, G.A., D.B. Considine, A.E. Dessler, S.R. Kawa, A.E. Roche, J. Kumer, and J.M. Russell, III, J. Geophys. Res., 102, 8955-8965, 1997.
  • Correlated observations of HCl and ClONO2 from UARS and implications for stratospheric chlorine partitioning, 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, Geophys. Res. Lett., 22, 1721-1724,1995.
  • Trajectory mapping and applications to data from the Upper Atmosphere Research Satellite, 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, J. Geophys. Res., 100, 16,491-16,505, 1995.
  • Ground-based instrumentation for measurements of atmospheric conduction current and electric field at the South Pole, Byrne, G.J., J.R. Benbrook, E.A. Bering, A.A. Few, G.A. Morris, W.J. Trabucco, and E.W. Paschal, J. Geophys. Res., 98, 2611-2618, 1993.


  • Chapter 6: Upper Stratospheric Processes in Scientific Assessment of Ozone Depletion: 1998, Muller, R., R. J. Salawitch, et al., contributors include G.A. Morris, WMO, 44, 1999.
  • Chapter 2: Data Quality in Assessment of Trends in the Vertical Distribution of Ozone, WCRP-SPARC, 1, 1998. Russell, J.M., H.G.J. Smit, et al., co-authors include G.A. Morris
  • “A Demonstration and Evaluation of Trajectory Mapping.” Morris, G.A. Ph.D. Thesis, Rice University, August 1994.
  • Feasibility of long term vertical electric current measurements in the Antarctic, Antarctic Bering, E.A., J.R. Benbrook, R. Chadwick, G.J. Byrne, A.A. Few, and G.A. Morris, J. of the U.S., XXVIII, 5, 314-317, 1993.
  • “Background and Early Results for the Atmospheric Electrical Current Sensor Project.” Morris, G.A. Master's Thesis, Rice University, 1992.
  • Magnetospheric influences on atmospheric electricity at the South Pole Station, Bering, E.A., J.R. Benbrook, R. Chadwick, G.J. Byrne, A.A. Few, and G.A. Morris, Proceedings of the Ninth International Conference on Atmospheric Electricity 1992, Volume 1, 476-479, A.I. Voeikor Main Geophysical Observatory, St. Petersburg, Russia, 1992.
  • Maxwell current measurements at the South Pole: Evaluation of measurements and instrument performance, Few, A.A., G.A. Morris, E.A. Bering, J.R. Benbrook, R. Chadwick, and G.J. Byrne, Proceedings of the Ninth International Conference on Atmospheric Electricity 1992, Volume 1, 23-26, A.I. Voeikor Main Geophysical Observatory, St. Petersburg, Russia, 1992.
  • Surface observations of global atmospheric electric phenomena at Amundsen-Scott South Pole Station, Antarctic, Few, A.A., G.A. Morris, E.A. Bering, J.R. Benbrook, R. Chadwick, and G. J. Byrne, J. of the U.S., XXVII, 5, 307-309, 1992.
  • Measurements of atmospheric conduction currents and electric fields at the South Pole, Antarctic, Byrne, G.J., E.A. Bering, A.A. Few, and G.A. Morris,J. of the U.S., XXVI, 5, 291-294, 1991.
  • Initial results from measurements of atmospheric conduction currents and electric fields at the South Pole, Antarctic, Bering, E.A., G.J. Byrne, A.A. Few, and G.A. Morris,J. of the U.S., XXVI, 5, 294-296, 1991.