During my M.S. and Ph.D. works at Colorado State University, my research activities focused on atmospheric chemistry, mainly atmospheric particulate matter and visibility at the Big Bend NP (BRAVO), Yosemite NP, Rocky Mt. NP (RoMANS), and also during the IMPROVE Nitrate Study, using URG sampler, MOUDI and PILS-IC. I was also involved in field experiments to study the chemistry of cloud and fog droplets (Davis, San Joaquin Valley, Fresno and San Diego, CA and Pittsburgh, PA).

I am currently working on the determination of the chemical compositions of atmospheric particulate matter by Aerosol Mass Spectrometry (Fire Lab at Missoula Experiments (FLAME II) and near roadway air pollution at Las Vegas) as a post-doc researcher at Colorado State University. I am also interested in studying particle and fog/cloud interactions and method development and instrumentation for continuous measurements.

Lee, T., Yu, X.-Y., Kreidenweis, S. M., Malm, W. C., and Collett, Jr., J. L. (2008) Semi-continuous measurement of PM2.5 ionic composition at several rural locations in the United States. Atmos. Environ., in press.

Lee, T., Yu, X.-Y., Ayres, B., Kreidenweis, S. M., Malm, W. C., and Collett, Jr., J. L. (2008) Observations of fine and coarse particle nitrate at several rural locations in the United States. Atmos. Environ., 42:2720-2732; doi:10.1016/j.atmosenv.2007.05.016.

Raja, S., Raghunathan, R., Yu, X.-Y., Lee, T., Chen, J., Kommalapati, R. R., Murugesan, K., Shen, X., Qingzhong, Y., Valsaraj, K. T., Collett Jr., J. L. (2008) Fog chemistry in the Texas - Louisiana Gulf Coast corridor. Atmos.Environ., 42: 2048-2061.

Collett, Jr., J. L., Herckes, P., Youngster, S., and Lee, T. (2008) Processing of atmospheric organic matter by California radiation fogs. Atmos. Res., 87: 232-241.

Straub D. J., Lee T., and Collett J. L. (2007) Chemical composition of marine stratocumulus clouds over the eastern Pacific Ocean. Journal of Geophysical Research-Atmospheres 112, (D04307), doi:10.1029/2006JD007439.

Herckes, P., Chang, H., Lee, T., and Collett, Jr. J. L., (2007) Air pollution processing by radiation fogs. Water, Air and Soil Pollution, 181, 65-75.

Yu, X-Y., Lee, T., Ayres, B., Kreidenweis, S. M., Malm, W. and Collett, Jr., J. L. (2006) Loss of fine particle ammonium from denuded nylon filters. Atmospheric Environment 40(25), 4797-4807.

McMeeking, G. R., Kreidenweis, S. M., Lunden, M., Carrillo, J., Carrico, C. M., Lee, T., Herckes, P., Engling, G., Day, D. E., Hand, J., Brown, N., Malm, W. C., and Collett, Jr., J. L. (2006) Smoke-impacted regional haze in California during the summer of 2002. J. Agric. Forest Meteor., 137(1-2), 25-42.

Carrico, C. M., Kreidenweis, S. M., Malm, W. C., Day, D. E., Lee, T., Carrillo, J., McMeeking, G. R. and Collett, Jr., J. L. (2005) Hygroscopic growth behavior of a carbon dominated aerosol in Yosemite National Park. Atmos. Environ., 39, 1393-1404.

Hand, J. L., Malm, W. C., Day, D., Lee, T., Carrico, J., Carrillo, J., Collett, Jr., J., Laskin, A., Wang, C., Cowin, J. P., and Iedema, M. J. (2005) Optical, physical and chemical properties of tar balls observed during the Yosemite Aerosol Characterization Study. J. Geophys. Res., 110 (D21): Art. No. D21210, doi:10.1029/2004JD005728.

Malm, W. C., Day, D. E., Kreidenweis, S. M., Collett, Jr., J. L., Carrico, C., McMeeking, G. and Lee, T. (2005) Hygroscopic properties of an organic-laden aerosol. Atmos. Environ., 39, 4969-4982.

Malm, W. C., Day, D. E., Carrico, C., Kreidenweis, S. M., Collett, J. L., Jr., McMeeking, G., Lee, T., and Carrillo, J. (2005) Intercomparison and closure calculations using measurements of aerosol species and optical properties during the Yosemite Aerosol Characterization Study. J. Geophys. Res., 110, D14302, doi:10.1029/2004JD005494.

McMeeking, G. R., Kreidenweis, S. M., Carrico, C.M., Lee, T., Collett, Jr., J. L., and Malm, W. C. (2005) Observations of smoke-influenced aerosol during the Yosemite Aerosol Characterization Study: size distributions and chemical composition. J. Geophys, Res., 110, D09206, doi:10.1029/2004JD005389.

McMeeking, G., Kreidenweis, S., Carrico, C., Lee, T., Collett, J., Day, D. E., and Malm, W.C. (2005) Observations of smoke influenced aerosol during the Yosemite Aerosol Characterization Study II: Aerosol scattering and absorbing properties. J. Geophys. Res., 110 (D18): Art. No. D18209, 10.1029/2004JD005624.

Yu, X-Y., Lee, T., Ayres, B., Kreidenweis, S. M., Collett, Jr., J. L., and Malm, W. (2005) Particulate nitrate measurement using nylon filters. J. Air Waste Manage. Assoc., 55, 1100-1110.

Lee, T., Kreidenweis, S. M. and Collett, Jr., J. L. (2004) Aerosol ion characteristics during the Big Bend Regional Aerosol and Visibility Observational study. J. Air and Waste Management Assoc., 54, 585-592.

Moore, K. F., Sherman, D. E., Reilly, J. E., Hannigan, M. P. Lee, T. and Collett, Jr., J. L. (2004) Drop size-dependent chemical composition in clouds and fogs. I. Observations. Atmos. Environ., 38, 1389-1402.

Lowenthal, D. H., Kumar, N., Hand, J., Day, D., Kreidenweis, S., Collett, J., Lee, T., and Ashbaugh, L. (2003) Hygroscopic organic aerosols during BRAVO? J. Air and Waste Management Assoc., 53(10),1273-1279.

Ervens, B., Herckes, P. Feingold, G., Lee, T., Collett, Jr., J. L. and Kreidenweis, S. M. (2003) On the drop-size dependence of organic acid and formaldehyde concentrations in fog. J. Atmos. Chem., 46, 239-269.

Hering, S. V., Stolzenburg, M. R., Hand, J. L., Kreidenweis, S. M., Lee, T., Collett, Jr., J. L., Dietrich, D. and Tigges, M. (2003) Hourly concentrations and light scattering cross sections for fine particle sulfate at Big Bend National Park. Atmos. Environ., 37, 1175-1183.

Malm, W. C., Day, D. E., Kreidenweis, S. M., Collett, J. L. and Lee, T. (2003) Humidity dependent optical properties of fine particles during the Big Bend Regional Aerosol and Visibility Observational Study (BRAVO). J. Geophys. Res., 108 (D9), 4279, doi:10.1029/2002JD002998.

Herckes, P., Hannigan, M. P., Trenary, L., Lee, T. and Collett, Jr., J. L. (2002) The organic composition of radiation fogs in Davis (California). Atmos. Res., 64, 99-108.

Herckes, P., Lee, T., Trenary, L., Kang, G. U., Chang, H. and Collett, Jr., J. L. (2002) Organic matter in central California radiation fogs. Environ. Sci. Technol., 36, 4777-4782.

Collett, Jr., J. L., Sherman, D. E., Moore, K. F., Hannigan, M. P. And Lee, T. (2001) Aerosol particle processing and removal by fogs: observations in chemically heterogeneous central California radiation fogs. Water, Air, Soil Poll.: Focus, 1, 303-312, doi: 10.1023/A:1013175709931.

Lee, T., Collett, Jr., J.L., Kreidenweis, S.M., Jimenez, J.L. Kimmel, J., Onasch,T.B., Trimborn, A., Malm, W., Hao, W.M. and Wold, C. (2007), Characterizing of smoke properties from laboratory combustion of forest fuels using an aerosol mass spectrometer, AAAR 26th Annual conference, Reno, Nevada.

Lee, T., Yu, X., Ayres, B., Carrillo, J., Carrico, C., Herckes, P., McMeeking, G., Engling, G., Kreidenweis, S.M., Collett, Jr., J.L. (2004) Continuous measurement of aerosol ionic composition during Yosemite National Park Special Study (2002), Special Nitrate Study (2003-2004) and Fresno Fog Study (2003-2004), Proceedings of the Korean Society of Atmospheric Environment's 37th meeting - 2004, Inha University, South Korea.

Lee, T., Yu, X., Ayres, B., Carrillo, J., Carrico, C., Herckes, P., McMeeking, G., Engling, G., Kreidenweis, S.M., Collett, Jr., J.L. (2004) Characteristics of aerosol nitrate at several IMPROVE monitoring sites, Proceedings of the AWMA's Visibility Specialty Conference - 2004, Asheville, North Carolina.

Lee, T., Carrico, C., J. Carrico, C., Herckes, P., Engling, G., Kreidenweis, S., Collett, Jr., J.L., Day, D., and Malm, W. (2003) Continuous measurement of aerosol ionic composition during the Yosemite National Park Special Study in 2002, Proceedings of the AWMA's 96th Annual Conference & Exhibition - 2003, San Diego, California.

Lee, T., Reilly, J.E., Hanningan, M.P., Sherman, D.E., Hand, J.L., Kreidenwies, S.M. and Collett, Jr., J.L. (2000), Comparison of observed and model-predicted aerosol composition during the Big Bend Regional Aerosol and Visibility Observational Study (BRAVO), AAAR 19th Annual Conference, St. Louis, Missouri.

Lee, T. and Lee, G. (1995) A test on NO2 sampling efficiency of Saltzman method, Proceeding of the Korean Society of Atmospheric Environment's spring meeting -1995.