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

  • EPA
  • HARC
  • NASA
  • NSF
  • TCEQ
  • EDF
Yunsoo Choi   Curriculum Vitae pdf
Dr. Choi

Assistant Professor of Atmospheric Chemistry, Atmospheric Modeling, and Remote Sensing

Post Doc, National Center for Atmospheric Research,1997-2000, Boulder, CO
Ph.D. 2007 Atmospheric Chemistry and Remote Sensing, Georgia Institute of Technology, Atlanta, Georgia 
M.S. 1999 Biophysical Chemistry, University of California, Irvine, California
M.S. 1996 Physical Chemistry, Hanyang University, Seoul, Korea
B.S. 1994 Chemistry, Hanyang University, Seoul, Korea

Office: 426F SR1
Phone: (713) 893-1311

  • Research Interest
  • Projects
  • Publications
  • Students
  • Courses

Air Quality Forecasting applications: The primary objectives of this research interest are: a) to establish real time Air Quality Forecasting system for Houston (AQF-Houston) to forecast O3 and aerosols, b) to archive simulated trace gases and aerosols; c) to analyze the forecasting performance compared to the archived in-situ aircraft and/or ground measurements; d) to investigate the relationship between air pollution and human health, and e) to further design an optimized air pollution regulation to mitigate the loss by medical costs and reduced efficiency in working.

Regional Chemical Transport Modeling applications: Multi-year trends in tropospheric O3 and aerosols are the results of both inter-annual variations of meteorological conditions by climate change and their precursors emission changes. The goals of this research interest are: a) to design a reasonable approach to identify the climate change impact on chemical environment, b) to quantify the contributions of anthropogenic and natural sources (e.g., biogenic. soil, and lightning sources) on chemical and radiative tracers, and c) to determine how aerosol-load changes affects the lightning activity over the last two decades.

Remote Sensing applications: Utilizing the data form satellite measurements is crucial for establishing a long-term monitoring system of the Earth. We are targeting these atmospheric remote sensing data: 1) OMI, 2) GOME-2, 3) TES, 4) MLS, 5) MODIS, 6) MISR, 7) MOPITT, and 7) NOAA-16. These remote sensing data will be used to investigate the impacts of cloud convection, lightning activity, biogenic change, air pollution regulation, energy resource change, ocean/atmospheric phenomena (e.g., IOD, El Nino, and monsoon) and extreme weather (e.g., heat waves, typhoons, and hurricanes) on air pollution and atmospheric environment.

Content for projects
  1. Summertime weekly cycles of observed and modeled NOx and O3 concentrations as a function of satellite-derived ozone production sensitivity and land use types over the Continental United States, Yunsoo Choi, Hyuncheol Kim, Daniel Tong, and Pius Lee, Atmospheric Chemistry and Physics, 12, 6291- 6307, 2012.
  2. Summertime weekly cycles of observed and modeled NOx and O3 concentrations as a function of satellite-derived ozone production sensitivity and land use types over the Continental United States, Yunsoo Choi, Hyuncheol Kim, Daniel Tong, and Pius Lee, Atmospheric Chemistry and Physics Discussion, 12, 1585-1611, 2012.
  3. Impact of East Asia summer monsoon on the air quality over China: The view from space,Yunsoo Choi, Chun Zhao, Yuhang Wang, Rong Fu and Derek Cunnold,Journal of Geophysical Research, doi:10.1029/2009JD012745, 2010.
  4. A study of tropospheric ozone column enhancements over NorthAmerica using satellite data and a global chemical model, Qing Yang, Derek Cunnold, Yunsoo Choi, Yuhang Wang, Ray Wang, Lucien Froidervaux, Anne Thompson, and Pawan Bhartia,Journal of Geophysical Research, doi:10.1029/2009JD012616, 2010.
  5. Understanding the contributions of anthropogenic and biogenic sources to CO enhancements and outflow observed over North America and the western Atlantic Ocean by TES and MOPITT, Yunsoo Choi, Gregory Osterman, Annmarie Eldering, Yuhang Wang, and Eric Edgerton,Atmospheric Environment, doi:10.1016/j.atmosenv.2010.01.029, 2010.
  6. Lightning and anthropogenic NOx sources over the U.S. and the western North Atlantic Ocean: Impact on OLR and radiative effects, Yunsoo Choi, Jinwon Kim, Annmarie Eldering, Gregory Osterman, Yuk L. Yung, and K. N. Liou,Geophysical Research Letters, 36, L17806, doi:10.1029/2009GL039381, 2009.
  7. Summertime impacts of convective transport and lightning NOX production over North America: modeling dependence on meteorological simulations,Chun Zhao, Yuhang Wang,Yunsoo Choi, and Tao Zeng, Atmospheric Chemistry and Physics, 9, 4315-4327,2009.
  8. Spring to summer northward migration of high O3 over the western North Atlantic, Yunsoo Choi, Yuhang Wang, Qing Yang, Derek Cunnold, Tao Zeng, Changsub Shim, Ming Luo, Annmarie Eldering, Eric Bucsela, and James Gleason,Geophysical Research Letters, 35, L04818, doi:10.1029/2007GL032276, 2008.
  9. Springtime transition of NO2, CO, and O3 over North America: Model evaluation and analysis, Yunsoo Choi, Yuhang Wang, Tao Zeng, Derek Cunnold, Eun-Su Yang, Randall Martin, and Kelly Chance, Valerie Thouret, and Eric Edgerton,Journal of Geophysical Research, 113, D20311, doi:10.1029/2007JD009632, 2008
  10. The effect of lightning NOX production on surface ozone in the continental United States,Burcak Kaynak, Yongtao Hu, Randall V. Martin, Armistead Russell, Yunsoo Choi, and Yuhang Wang, Atmospheric Chemistry and Physics, 8, 5151-5159, 2008.
  11. Statistical correction and downscaling of chemistry-transport model ozone forecasts over Atlanta, Serge Guillas, Jinghui Bao, Yunsoo Choi and Yuhang Wang, Atmospheric Environments, 42(6), 1338- 1348, 2008.
  12. Assessing the photochemical impact of snow NOx emissions over Antarctica during ANTCI 2003, Yuhang Wang, Yunsoo Choi, Tao Zeng, Douglas Davis, Martin Buhr, L. Gregory Huey, and William Neff, Atmospheric Environments, 41(19), 3944, 2007
  13. Summertime tropospheric ozone columns from Aura OMI/MLS measurements versus regional model results over the United States, Jing Ping, Derek Cunnold, Yunsoo Choi and Yuhang Wang, Geophysical Research Letters, 33(17), L17817, 2006.
  14. Late-spring increase of trans-Pacific pollution transport in the upper troposphere, Yuhang Wang, Yunsoo Choi, Tao Zeng, Brian Ridley, Nicola Blake, Donald Blake and Frank Flocke, Geophysical Research Letters, 33, L01811, 2006.
  15. Evidence of lightning NOX and convective transport of pollutants in satellite observations over North America, Yunsoo Choi, Yuhang Wang, Tao Zeng, Randall Martin, Thomas Kurosu and Kelly Chance, Geophysical Research Letters, 32, L02805, 2005.
  16. Constraining global isoprene emissions with Global Ozone Monitoring Experiment (GOME) formaldehyde column measurements,Changsub Shim, Yuhang Wang, Yunsoo Choi, Paul I. Palmer, Dorian S. Abbot and Kelly Chance, Journal of Geophysical Research, 110, D24301, 2005.
  17. Intercontinental transport of pollution manifested in the variability and seasonal trend of springtime O3 at northern middle and high latitudes, Yuhang Wang, Changsub Shim, Nicola Blake, Donald Blake, Yunsoo Choi, Brian Ridley, Jack Dibb, Anthony Wimmers, Jennie Moody, Frank Flocke, Andrew Weinheimer, Robert Talbot and Elliot Atlas, Journal of Geophysical Research, 108(D21), 4683, 2003.
  18. Survey of whole air data from the second airborne Biomass Burning and Lightning Experiment using principal component analysis, Yunsoo Choi, Scott Elliott, Isobel J. Simpson, Donald R. Blake, Jonah J. Colman, Manvendra K. Dubey, Simone Meinardi, F. Sherwood Rowland, Tomoko Shirai and Felisa A. Smith, Journal of Geophysical Research, 108(D5), 4163, 2003.
  19. Molecular Dynamics Simulations of a Pulmonary Surfactant Protein B Peptide in a Lipid Monolayer, J. Alfredo Freites, Yunsoo Choi and Douglas J. Tobias, Biophysical Journal, 84(4), 2169- 2180, 2003.
  Beata Czader,
Research Scientist

CMAQ based air quality forecasting/modeling
WACCM based chemistry modeling
  Lijun Diao,
Ph.D. student

WRF-Chem based air quality forecasting/modeling
WACCM based dynamic modeling
  Shuai Pan,
Ph.D. student

CMAQ based atmospheric chemistry
  Joey Rodriguez,
M.S student

WACCM based climate modeling

  • Graduate Seminar (Atmospheric Science)
  • Mesoscale Meteorology
  • Remote Sensing for Atmospheric Science
  • Atmospheric Numerical Modeling
  • Numerical Modeling in Atmospheric Science
  • Principles of Atmospheric Science
  • Dynamic Meteorology
  • Geophysical Fluid Dynamics