Dr. John T. Sullivan

Dr. John T. Sullivan

  • Rsch AST, Atmospheric Chemistry & Dyn
  • 301.614.5549
  • NASA/GSFC
  • Mail Code: 614
  • GREENBELT , MD 20771
  • Employer: NASA
  • Brief Bio

    Dr. John T. Sullivan currently works in the Atmospheric Chemistry and Dynamics Laboratory at the NASA Goddard Space Flight Center (Greenbelt, MD). He is currently the NASA Tropospheric Ozone Lidar Network (TOLNet) project scientist. His expertise is in performing measurements of atmospheric constituents using active remote sensing techniques, such as lidar (light detection and ranging), for applications such as air quality, satellite validation, and stratospheric trends. Dr. Sullivan has been critical in designing, calibrating, and deploying  transportable lidars for measuring tropospheric and stratospheric ozone profiles in NASA campaigns, such as DISCOVER-AQ and KORUS-AQ and various NDACC intercomparison campaigns. He was awarded the NASA Postdoctoral Program (NPP) Fellowship to continue his contribution of novel observations of the atmosphere to further NASA’s science exploration. In 2017, he was named as the Early Career Scientist associated with the NASA Science Innovation Fund (SIF) supported Ozone Water-Land Environmental Transition Study (OWLETS) in the Tidewater, VA region. He transitioned to the PI for the 2018 OWLETS field deployment within the northern Chesapeake region.

    His role within TOLNet is to guide an inter-agency cadre of scientists and researchers to provide high spatio-temporal observations of boundary layer and free tropospheric ozone to study the character of the atmospheric structure that can be used to better evaluate satellite retrievals and improve the processes in air-quality forecast and diagnostic models.

    Research Interests

    Atmospheric Monitoring

    Utilize spectral and optical properties of the atmosphere to monitor important atmospheric constituents relating to air quality and human health. Understand the photochemical and diurnal cycle of urban/anthropogenic pollutants and their impacts on the outdoor environment. Examine the effects of topography on pollutants, particularly in the presence of complex terrain such as mountains or coastlines. Utilize various established networks of pollutant monitors to infer statistically significant spatial and temporal gradients in pollution. Recognize the physical and chemical parameterization applied in air quality modeling and forecasting. 

    Positions/Employment

    10/2019 - Present

    Tropospheric Ozone Lidar Network (TOLNet) Project Scientist

    NASA, Greenbelt, MD
    12/2017 - Present

    Research Physical Scientist

    NASA, Greenbelt, MD
    7/2017 - 12/2017

    Postdoctoral Research Associate

    UMBC/JCET, Baltimore, MD
    2/2016 - 7/2017

    Posdoctoral Fellow (NPP)

    NASA/USRA, Greenbelt, MD
    7/2015 - 2/2016

    Postdoctoral Fellow (NPP)

    NASA/ORAU, Greenbelt, MD

    Teaching Experience

    Ph.D. Commitee Member, Brian Carroll, "Observations of Low-Level Jet Physics and Impacts", University of Maryland, Baltimore County, 2020. 

    Ph.D. Commitee Member, Zhifeng Yang, "Improving Air Quality Forecasts of Ozone: Modeling-Observation Integrated Study", University of Maryland, Baltimore County, 2021. 

    Mentor, Trong Hieu Nyugen, "Lidar Automation and Software Development for Tropospheric Ozone DIAL" University of Central Florida, 2020. 

    Mentor, Natasha Dacic, "Evaluation of NASA's high-resolution global composition simulations: Understanding a pollution event in the Chesapeake Bay during the summer 2017 OWLETS campaign" University of Michigan, 2018-2020. 

    Mentor, Lance Niño, "Characterizing Spatio-Temporal Ozone Gradients Along Coastal Boundaries: Sondes and Mobile Measurements from OWLETS-2" Colorado State University, 2017-2019. 

    Education

    Ph.D., Atmospheric Physics, University of Maryland, Baltimore County, 2015

    "Improving the Current Understanding of the Evolution and Vertical Processes of Tropospheric Ozone Using a Ground Based Differential Absorption Lidar", Advisor: Dr. Raymond M. Hoff

    M.S., Atmospheric Physics, University of Maryland, Baltimore County, 2012

    B.A. Physics, McDaniel College, 2010

    Professional Societies

    American Geophysical Union, 2011 - Present
    American Meteorological Society, 2012 - Present

    Awards

    NASA Outstanding Group Achievement Award, DISCOVER-AQ Science Team, 2016

    NASA Outstandinc Group Achievement Award, KORUS-AQ Science Team, 2018

    NASA Outstanding Group Achievement Award, OWLETS Science Team, 2019

    NASA Headquarters Honors Group Achievement Award, Tropospheric Ozone Lidar Network, 2019

    Selected Publications

    Refereed

    Dacic, N., J. T. Sullivan, K. E. Knowland, et al. G. M. Wolfe, L. D. Oman, T. A. Berkoff, and G. P. Gronoff. 2019. "Evaluation of NASA's high-resolution global composition simulations: Understanding a pollution event in the Chesapeake Bay during the summer 2017 OWLETS campaign." Atmospheric Environment, 117133 [10.1016/j.atmosenv.2019.117133]

    Jeong, D., R. Seco, D. Gu, et al. Y. Lee, B. A. Nault, C. J. Knote, T. Mcgee, J. T. Sullivan, J. L. Jimenez, P. Campuzano-Jost, D. R. Blake, D. Sanchez, A. B. Guenther, D. Tanner, L. G. Huey, R. Long, B. E. Anderson, S. R. Hall, K. Ullmann, H.-J. Shin, S. C. Herndon, Y. Lee, D. Kim, J. Ahn, and S. Kim. 2019. "Integration of Airborne and Ground Observations of Nitryl Chloride in the Seoul Metropolitan Area and the Implications on Regional Oxidation Capacity During KORUS-AQ 2016." Atmospheric Chemistry and Physics, 19: 12779–1279 [10.5194/acp-19-12779-2019]

    Sullivan, J. T., T. J. McGee, R. M. Stauffer, et al. A. M. Thompson, A. Weinheimer, C. Knote, S. Janz, A. Wisthaler, R. Long, J. Szykman, J. Park, Y. Lee, S. Kim, D. Jeong, D. Sanchez, L. Twigg, G. Sumnicht, T. Knepp, and J. R. Schroeder. 2019. "Taehwa Research Forest: a receptor site for severe domestic pollution events in Korea during 2016." Atmospheric Chemistry and Physics, 19: 5051-5067 [https://doi.org/10.5194/acp-19-5051-2019]

    Sullivan, J. T., T. Berkoff, G. Gronoff, et al. T. Knepp, M. Pippin, D. Allen, L. Twigg, R. Swap, M. Tzortziou, A. M. Thompson, R. M. Stauffer, G. M. Wolfe, J. Flynn, S. E. Pusede, L. Judd, W. Moore, B. D. Baker, J. Al-Saadi, and T. J. McGee. 2019. "The Ozone Water-Land Environmental Transition Study (OWLETS): An Innovative Strategy for Understanding Chesapeake Bay Pollution Events." Bulletin of the American Meteorological Society, 100 (2): 291-306 [10.1175/BAMS-D-18-0025.1]

    Oltmans, S. J., L. C. Cheadle, B. J. Johnson, et al. R. C. Schnell, D. Helmig, A. M. Thompson, P. Cullis, E. Hall, A. Jordan, C. Sterling, A. McClure-Begley, J. T. Sullivan, T. J. McGee, and D. Wolfe. 2019. "Boundary layer ozone in the Northern Colorado Front Range in July–August 2014 during FRAPPE and DISCOVER-AQ from vertical profile measurements." Elem Sci Anth, 7 (1): 6 [10.1525/elementa.345]

    Leblanc, T., M. A. Brewer, P. S. Wang, et al. M. J. Granados-Muñoz, K. B. Strawbridge, M. Travis, B. Firanski, J. T. Sullivan, T. J. McGee, G. K. Sumnicht, L. W. Twigg, T. A. Berkoff, W. Carrion, G. Gronoff, A. Aknan, G. Chen, R. J. Alvarez, A. O. Langford, C. J. Senff, G. Kirgis, M. S. Johnson, S. Kuang, and M. J. Newchurch. 2018. "Validation of the TOLNet lidars: the Southern California Ozone Observation Project (SCOOP)." Atmospheric Measurement Techniques, 11 (11): 6137-6162 [10.5194/amt-11-6137-2018]

    McGee, T. J., J. T. Sullivan, L. W. Twigg, et al. G. K. Sumnicht, J. Barnes, T. Leblanc, and S. McDermid. 2018. "Lidar validation measurements at the NOAA Mauna Loa Observatory NDACC Station." Lidar Remote Sensing for Environmental Monitoring XVI, [10.1117/12.2324714]

    Sullivan, J., T. McGee, A. Thompson, et al. L. Twigg, G. Sumnicht, and R. Stauffer. 2018. "Boundary layer pollution profiles from a rural site in South Korea." EPJ Web of Conferences, 176: 04004 [10.1051/epjconf/201817604004]

    Wang, L., M. J. Newchurch, R. J. Alvarez II, et al. T. A. Berkoff, S. S. Brown, W. Carrion, R. J. De Young, B. J. Johnson, R. Ganoe, G. Gronoff, G. Kirgis, S. Kuang, A. O. Langford, T. Leblanc, E. E. McDuffie, T. J. McGee, D. Pliutau, C. J. Senff, J. T. Sullivan, G. Sumnicht, L. W. Twigg, and A. J. Weinheimer. 2017. "Quantifying TOLNet ozone lidar accuracy during the 2014 DISCOVER-AQ and FRAPPÉ campaigns." Atmospheric Measurement Techniques, 10 (10): 3865-3876 [10.5194/amt-10-3865-2017]

    Pfister, G. G., P. J. Reddy, M. C. Barth, et al. F. F. Flocke, A. Fried, S. C. Herndon, B. C. Sive, J. T. Sullivan, A. M. Thompson, T. I. Yacovitch, A. J. Weinheimer, and A. Wisthaler. 2017. "Using Observations and Source-Specific Model Tracers to Characterize Pollutant Transport During FRAPPÉ and DISCOVER-AQ." Journal of Geophysical Research: Atmospheres, 122 (19): 10,510-10,538 [10.1002/2017jd027257]

    Sullivan, J. T., S. D. Rabenhorst, J. Dreessen, et al. T. J. McGee, R. Delgado, L. Twigg, and G. Sumnicht. 2017. "Lidar observations revealing transport of O3 in the presence of a nocturnal low-level jet: Regional implications for “next-day” pollution." Atmospheric Environment, 158 (June 2017): 160-171 [10.1016/j.atmosenv.2017.03.039]

    Sullivan, J. T., T. J. McGee, A. O. Langford, et al. R. J. Alvarez, C. J. Senff, P. J. Reddy, A. M. Thompson, L. W. Twigg, G. K. Sumnicht, P. Lee, A. Weinheimer, C. Knote, R. W. Long, and R. M. Hoff. 2016. "Quantifying the contribution of thermally driven recirculation to a high-ozone event along the Colorado Front Range using lidar." Journal of Geophysical Research: Atmospheres, 121: [10.1002/2016jd025229]

    Sullivan, J. T., T. J. McGee, R. M. Hoff, G. Sumnicht, and L. Twigg. 2016. "Characterizing the Vertical Processes of Ozone in Colorado’s Front Range Using the GSFC Ozone DIAL." EPJ Web of Conferences, 119: 05014 [10.1051/epjconf/201611905014]

    Newchurch, M. J., S. Kuang, T. Leblanc, et al. R. J. Alvarez, A. O. Langford, C. J. Senff, J. F. Burris, T. J. McGee, J. T. Sullivan, R. J. DeYoung, J. Al-Saadi, M. Johnson, and A. Pszenny. 2016. "TOLNET – A Tropospheric Ozone Lidar Profiling Network for Satellite Continuity and Process Studies." EPJ Web of Conferences, 119: 20001 [10.1051/epjconf/201611920001]

    Dreessen, J., J. Sullivan, and R. Delgado. 2016. "Observations and Impacts of Transported Canadian Wildfire Smoke on Ozone and Aerosol Air Quality in the Maryland Region on 9-12 June, 2015." Journal of the Air & Waste Management Association, 66 (no. 9): 842-862 [10.1080/10962247.2016.1161674]

    Sullivan, J. T., T. J. Mcgee, A. M. Thompson, et al. R. B. Pierce, G. K. Sumnicht, L. W. Twigg, E. Eloranta, and R. M. Hoff. 2015. "Characterizing the lifetime and occurrence of stratospheric-tropospheric exchange events in the rocky mountain region using high-resolution ozone measurements." Journal of Geophysical Research: Atmospheres, 120 (24): 12410--12424 [10.1002/2015JD023877]

    Sullivan, J., T. McGee, T. Leblanc, G. Sumnicht, and L. Twigg. 2015. "Optimization of the GSFC TROPOZ DIAL retrieval using synthetic lidar returns and ozonesondes--Part 1: Algorithm validation." Atmospheric Measurement Techniques, 8 (10): 4133--4143 [10.5194/amt-8-4133-2015]

    Sullivan, J. T., T. J. McGee, R. DeYoung, et al. L. W. Twigg, G. K. Sumnicht, D. Pliutau, T. Knepp, and W. Carrion. 2015. "Results from the NASA GSFC and LaRC Ozone Lidar Intercomparison: New Mobile Tools for Atmospheric Research." Journal of Atmospheric and Oceanic Technology, 32 (10): 1779-1795 [10.1175/jtech-d-14-00193.1]

    Sullivan, J., T. McGee, G. Sumnicht, L. Twigg, and R. Hoff. 2014. "A mobile differential absorption lidar to measure sub-hourly fluctuation of tropospheric ozone profiles in the Baltimore--Washington, DC region." Atmospheric Measurement Techniques, 7 (10): 3529--3548 [10.5194/amt-7-3529-2014]

    Brief Bio

    Dr. John T. Sullivan currently works in the Atmospheric Chemistry and Dynamics Laboratory at the NASA Goddard Space Flight Center (Greenbelt, MD). He is currently the NASA Tropospheric Ozone Lidar Network (TOLNet) project scientist. His expertise is in performing measurements of atmospheric constituents using active remote sensing techniques, such as lidar (light detection and ranging), for applications such as air quality, satellite validation, and stratospheric trends. Dr. Sullivan has been critical in designing, calibrating, and deploying  transportable lidars for measuring tropospheric and stratospheric ozone profiles in NASA campaigns, such as DISCOVER-AQ and KORUS-AQ and various NDACC intercomparison campaigns. He was awarded the NASA Postdoctoral Program (NPP) Fellowship to continue his contribution of novel observations of the atmosphere to further NASA’s science exploration. In 2017, he was named as the Early Career Scientist associated with the NASA Science Innovation Fund (SIF) supported Ozone Water-Land Environmental Transition Study (OWLETS) in the Tidewater, VA region. He transitioned to the PI for the 2018 OWLETS field deployment within the northern Chesapeake region.

    His role within TOLNet is to guide an inter-agency cadre of scientists and researchers to provide high spatio-temporal observations of boundary layer and free tropospheric ozone to study the character of the atmospheric structure that can be used to better evaluate satellite retrievals and improve the processes in air-quality forecast and diagnostic models.

    Selected Publications

    Refereed

    Dacic, N., J. T. Sullivan, K. E. Knowland, et al. G. M. Wolfe, L. D. Oman, T. A. Berkoff, and G. P. Gronoff. 2019. "Evaluation of NASA's high-resolution global composition simulations: Understanding a pollution event in the Chesapeake Bay during the summer 2017 OWLETS campaign." Atmospheric Environment 117133 [10.1016/j.atmosenv.2019.117133]

    Jeong, D., R. Seco, D. Gu, et al. Y. Lee, B. A. Nault, C. J. Knote, T. Mcgee, J. T. Sullivan, J. L. Jimenez, P. Campuzano-Jost, D. R. Blake, D. Sanchez, A. B. Guenther, D. Tanner, L. G. Huey, R. Long, B. E. Anderson, S. R. Hall, K. Ullmann, H.-J. Shin, S. C. Herndon, Y. Lee, D. Kim, J. Ahn, and S. Kim. 2019. "Integration of Airborne and Ground Observations of Nitryl Chloride in the Seoul Metropolitan Area and the Implications on Regional Oxidation Capacity During KORUS-AQ 2016." Atmospheric Chemistry and Physics 19 12779–1279 [10.5194/acp-19-12779-2019]

    Sullivan, J. T., T. J. McGee, R. M. Stauffer, et al. A. M. Thompson, A. Weinheimer, C. Knote, S. Janz, A. Wisthaler, R. Long, J. Szykman, J. Park, Y. Lee, S. Kim, D. Jeong, D. Sanchez, L. Twigg, G. Sumnicht, T. Knepp, and J. R. Schroeder. 2019. "Taehwa Research Forest: a receptor site for severe domestic pollution events in Korea during 2016." Atmospheric Chemistry and Physics 19 5051-5067 [https://doi.org/10.5194/acp-19-5051-2019]

    Sullivan, J. T., T. Berkoff, G. Gronoff, et al. T. Knepp, M. Pippin, D. Allen, L. Twigg, R. Swap, M. Tzortziou, A. M. Thompson, R. M. Stauffer, G. M. Wolfe, J. Flynn, S. E. Pusede, L. Judd, W. Moore, B. D. Baker, J. Al-Saadi, and T. J. McGee. 2019. "The Ozone Water-Land Environmental Transition Study (OWLETS): An Innovative Strategy for Understanding Chesapeake Bay Pollution Events." Bulletin of the American Meteorological Society 100 (2): 291-306 [10.1175/BAMS-D-18-0025.1]

    Oltmans, S. J., L. C. Cheadle, B. J. Johnson, et al. R. C. Schnell, D. Helmig, A. M. Thompson, P. Cullis, E. Hall, A. Jordan, C. Sterling, A. McClure-Begley, J. T. Sullivan, T. J. McGee, and D. Wolfe. 2019. "Boundary layer ozone in the Northern Colorado Front Range in July–August 2014 during FRAPPE and DISCOVER-AQ from vertical profile measurements." Elem Sci Anth 7 (1): 6 [10.1525/elementa.345]

    Leblanc, T., M. A. Brewer, P. S. Wang, et al. M. J. Granados-Muñoz, K. B. Strawbridge, M. Travis, B. Firanski, J. T. Sullivan, T. J. McGee, G. K. Sumnicht, L. W. Twigg, T. A. Berkoff, W. Carrion, G. Gronoff, A. Aknan, G. Chen, R. J. Alvarez, A. O. Langford, C. J. Senff, G. Kirgis, M. S. Johnson, S. Kuang, and M. J. Newchurch. 2018. "Validation of the TOLNet lidars: the Southern California Ozone Observation Project (SCOOP)." Atmospheric Measurement Techniques 11 (11): 6137-6162 [10.5194/amt-11-6137-2018]

    McGee, T. J., J. T. Sullivan, L. W. Twigg, et al. G. K. Sumnicht, J. Barnes, T. Leblanc, and S. McDermid. 2018. "Lidar validation measurements at the NOAA Mauna Loa Observatory NDACC Station." Lidar Remote Sensing for Environmental Monitoring XVI [10.1117/12.2324714]

    Sullivan, J., T. McGee, A. Thompson, et al. L. Twigg, G. Sumnicht, and R. Stauffer. 2018. "Boundary layer pollution profiles from a rural site in South Korea." EPJ Web of Conferences 176 04004 [10.1051/epjconf/201817604004]

    Wang, L., M. J. Newchurch, R. J. Alvarez II, et al. T. A. Berkoff, S. S. Brown, W. Carrion, R. J. De Young, B. J. Johnson, R. Ganoe, G. Gronoff, G. Kirgis, S. Kuang, A. O. Langford, T. Leblanc, E. E. McDuffie, T. J. McGee, D. Pliutau, C. J. Senff, J. T. Sullivan, G. Sumnicht, L. W. Twigg, and A. J. Weinheimer. 2017. "Quantifying TOLNet ozone lidar accuracy during the 2014 DISCOVER-AQ and FRAPPÉ campaigns." Atmospheric Measurement Techniques 10 (10): 3865-3876 [10.5194/amt-10-3865-2017]

    Pfister, G. G., P. J. Reddy, M. C. Barth, et al. F. F. Flocke, A. Fried, S. C. Herndon, B. C. Sive, J. T. Sullivan, A. M. Thompson, T. I. Yacovitch, A. J. Weinheimer, and A. Wisthaler. 2017. "Using Observations and Source-Specific Model Tracers to Characterize Pollutant Transport During FRAPPÉ and DISCOVER-AQ." Journal of Geophysical Research: Atmospheres 122 (19): 10,510-10,538 [10.1002/2017jd027257]

    Sullivan, J. T., S. D. Rabenhorst, J. Dreessen, et al. T. J. McGee, R. Delgado, L. Twigg, and G. Sumnicht. 2017. "Lidar observations revealing transport of O3 in the presence of a nocturnal low-level jet: Regional implications for “next-day” pollution." Atmospheric Environment 158 (June 2017): 160-171 [10.1016/j.atmosenv.2017.03.039]

    Sullivan, J. T., T. J. McGee, A. O. Langford, et al. R. J. Alvarez, C. J. Senff, P. J. Reddy, A. M. Thompson, L. W. Twigg, G. K. Sumnicht, P. Lee, A. Weinheimer, C. Knote, R. W. Long, and R. M. Hoff. 2016. "Quantifying the contribution of thermally driven recirculation to a high-ozone event along the Colorado Front Range using lidar." Journal of Geophysical Research: Atmospheres 121 [10.1002/2016jd025229]

    Sullivan, J. T., T. J. McGee, R. M. Hoff, G. Sumnicht, and L. Twigg. 2016. "Characterizing the Vertical Processes of Ozone in Colorado’s Front Range Using the GSFC Ozone DIAL." EPJ Web of Conferences 119 05014 [10.1051/epjconf/201611905014]

    Newchurch, M. J., S. Kuang, T. Leblanc, et al. R. J. Alvarez, A. O. Langford, C. J. Senff, J. F. Burris, T. J. McGee, J. T. Sullivan, R. J. DeYoung, J. Al-Saadi, M. Johnson, and A. Pszenny. 2016. "TOLNET – A Tropospheric Ozone Lidar Profiling Network for Satellite Continuity and Process Studies." EPJ Web of Conferences 119 20001 [10.1051/epjconf/201611920001]

    Dreessen, J., J. Sullivan, and R. Delgado. 2016. "Observations and Impacts of Transported Canadian Wildfire Smoke on Ozone and Aerosol Air Quality in the Maryland Region on 9-12 June, 2015." Journal of the Air & Waste Management Association 66 (no. 9): 842-862 [10.1080/10962247.2016.1161674]

    Sullivan, J. T., T. J. Mcgee, A. M. Thompson, et al. R. B. Pierce, G. K. Sumnicht, L. W. Twigg, E. Eloranta, and R. M. Hoff. 2015. "Characterizing the lifetime and occurrence of stratospheric-tropospheric exchange events in the rocky mountain region using high-resolution ozone measurements." Journal of Geophysical Research: Atmospheres 120 (24): 12410--12424 [10.1002/2015JD023877]

    Sullivan, J., T. McGee, T. Leblanc, G. Sumnicht, and L. Twigg. 2015. "Optimization of the GSFC TROPOZ DIAL retrieval using synthetic lidar returns and ozonesondes--Part 1: Algorithm validation." Atmospheric Measurement Techniques 8 (10): 4133--4143 [10.5194/amt-8-4133-2015]

    Sullivan, J. T., T. J. McGee, R. DeYoung, et al. L. W. Twigg, G. K. Sumnicht, D. Pliutau, T. Knepp, and W. Carrion. 2015. "Results from the NASA GSFC and LaRC Ozone Lidar Intercomparison: New Mobile Tools for Atmospheric Research." Journal of Atmospheric and Oceanic Technology 32 (10): 1779-1795 [10.1175/jtech-d-14-00193.1]

    Sullivan, J., T. McGee, G. Sumnicht, L. Twigg, and R. Hoff. 2014. "A mobile differential absorption lidar to measure sub-hourly fluctuation of tropospheric ozone profiles in the Baltimore--Washington, DC region." Atmospheric Measurement Techniques 7 (10): 3529--3548 [10.5194/amt-7-3529-2014]

                                                                                                                                                                                            
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