Ja-Ho Koo

Research interests

• Asian/Pacific air pollution and environment
• Polar atmospheric chemistry
• Regional and global distribution of atmospheric components

Education

• Ph.d. (2014) in Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, USA
• M.Sc (2008) in Atmospheric Sciences, Yonsei University, Seoul, Korea
• B.Sc (2006) in Chemistry, Yonsei University, Seoul, Korea
• B.Sc (2006) in Atmospheric Sciences, Yonsei University, Seoul, Korea

Research Experience

• 2016 - 2019 : Research Professor, Yonsei University, Seoul, Korea
• 2014 - 2016 : Postdoctoral Fellow, University of Toronto, Toronto, Canada

Selected Publications

• Lee, J., J. Kim, Y. Cho, S. Lee, D. C. Pendergrass, D. J. Jacob, H. Lim, H. C. Jung, K.-M. Myung, Y.-D. Kim, K. M. Han, and J.-H. Koo* (2026), Evaluation for the machine learning based PM2.5 estimation using different spatial resolution of geostationary satellite AOD over megacities in Korea, Atmos. Environ., 373, 121941, doi: 10.1016/j.atmosenv.2026.121941.
• Park, J.-H., J.-H. Koo*, J.-S. Kug, S-J. Lee, M.-K. Sung, J. Kim, E.-C. Chang, Y.-M. Yang, S. S. Park, K.-H. Kwak, J.-H. Oh, H.-J. Kang, and S.-I. An (2025), Arctic stratospheric ozone as a precursor of ENSO events since 2000s, npj Climate and Atmospheric Science, 8, 338, doi:10.1038/s41612-025-01220
• Park, J.-H., S.-J. Lee, T. Lee, S. S. Park, K.-H. Kwak, J. Kim, U. Shin, J.-H. Son, S.-W. Yeh, J.-S. Kug, and J.-H. Koo* (2025), Variability of upper troposphere-low stratosphere ozone over the East Asia from a perspective of atmospheric stationary waves, Environ. Res. Lett., 20(4), 044051, doi:10.1088/1748-9326/adc28e.
• Lee, D., J.-S. Kim, K. Walker, P. Sheese, S. S. Park, T. Choi, M. Park, H.-J. Song, and J.-H. Koo* (2025), The influence of Australian bushfire to the upper tropospheric CO and hydrocarbon distribution in the South Pacific, Remote Sens., 17(12), 2092, doi:10.3390/rs17122092.
• Yeo, M. J., D. Lee, S. Na, D. Lee, Y. P. Kim, J. Park, and J.-H. Koo* (2025), Variation of the concentrations of the particulate chemical components in Seoul response to the changes of major emission sources in the region: Emphasis on ambient heavy metals, J. Atmos. Chem., 82, 7, doi:10.1007/s10874-025-09473-6.
• Pan et al., and 39 co-authors (2025), The Asian Summer Monsoon Chemical and Climate Impact Project (ACCLIP): An Overview, J. Geophys. Res. Atmos., 130(23), e2025JD044417, doi:10.1029/2025JD044417.
• Pan et al., and 40 co-authors (2024), East Asian summer monsoon delivers large abundances of very-short-lived organic chlorine substances to the lower stratosphere, PNAS, 121, e2318716121, doi:10.1073/pnas.2318716121.
• Koo, J.-H.*, D. Lee, H. Bae, T. Lee, S. G. Na, S.-W. Yeh, J. Park, and M. J. Yeo (2024), Back-trajectory analyses for evaluating the transboundary transport effect to the aerosol pollution in South Korea, Environ. Pollut., 351, 124031, doi: 10.1016/j.envpol.2024.124031.
• Yeo, M. J., and J.-H. Koo (2023), The estimation of urban air quality change in South Korea under the carbon net-zero scenario, Urban Clim., 49, 101438, doi:10.1016/j.uclim.2023.101438
• Lee, H., T. Choi, S.-J. Kim, J. Bak, D. H. Ahn, N. A. Kramarova, S. S. Park, J. Kim, and J.-H. Koo* (2022), Validation of satellite ozone profiles in austral spring using ozonesonde measurements in the Jang Bogo station, Antarctica, Environ. Res., 214, 114087, doi:10.1016/j.envres.2022.114087.
• Lee, T., S. Go, Y. G. Lee, S. S. Park, J. Park, and J.-H. Koo* (2022), Temporal variability of surface air pollutants in megacities of South Korea, Front. Environ. Sci., 10, 915531, doi:10.3389/fenvs.2022.915531.
• Kim, S.-M., J.-H. Koo*, H. Lee, J. Mok, M. Choi, S. Go, S. Lee, Y. Cho, J. Hong, S. Seo, J. Lee, J.-W. Hong, and J. Kim (2021), Comparison of PM2.5 in Seoul, Korea estimated from the various ground-based and satellite AOD, Appl. Sci., 11, 10755, doi:10.3390/app112210755.
• Kim, S., S.-J. Park, H. Lee, D. H. Ahn, Y. Jung, T. Choi, B. Y. Lee, S. Kim, and J.-H. Koo* (2021), Evaluation of total ozone column from multiple satellite measurements in the Antarctic using the Brewer spectrophotometer, Remote Sens., 13, 1594, doi:10.3390/rs13081594.
• Koo, J.-H.*, J. Lee, J. Kim, T. F. Eck, D. M. Giles, B. N. Holben, S. S. Park, M. Choi, N. Kim, J. Yoon, and Y. G. Lee (2021), Investigation of the relationship between the fine mode fraction and Ångström exponent: cases in Korea, Atmos. Res., 248, 105217, doi:10.1016/j.atmosres.2020.105217.
• Koo, J.-H., T. Choi, H. Lee, J. Kim, D. H. Ahn, J. Kim, Y.-H. Kim, C. Yoo, H. Hong, K.-J. Moon, and Y. G. Lee (2018), Total ozone characteristics associated with regional meteorology in West Antarctica, Atmos. Environ., 195, 78-88.
• Koo, J.-H., T. Choi, Y. Cho, H. Lee, J. Kim, D. H. Ahn, J. Kim, and Y. G. Lee (2018), The variation of aerosol optical depth over the polar stations of Korea (Secondary publication), Aerosol Air Qual. Res., 18, 3202-3210.
• Koo, J.-H., K. A. Walker, A. Jones, P. E. Sheese, C. D. Boone, P. F. Bernath, and G. L. Manney (2017), Global climatology based on the ACE-FTS version 3.5 dataset: Addition of mesospheric levels and carbon-containing species in the UTLS, J. Quant. Spectrosc. Radiat. Transfer, 186, 52-62.
• Koo, J.-H., J. Kim, J. Kim, H. Lee, Y. M. Noh, and Y. G. Lee (2016), Springtime trans-Pacific transport of Asian pollutants characterized by the Western Pacific (WP) pattern, Atmos. Environ., 147, 166- 177.
• Koo, J.-H., J. Kim, J. Lee, T. F. Eck, Y. G. Lee, S. S. Park, M. Kim, U. Jeong, J. Yoon, J. Mok, and H.-K. Cho (2016), Wavelength dependence of Ångström exponent and single scattering albedo observed by skyradiometer in Seoul, Korea, Atmos. Res., 181, 12-19
• Koo, J.-H., Y. Wang, T. Jiang, Y. Deng, S. J. Oltmans, and S. Solberg (2014), Influence of climate variability on near-surface ozone depletion events in the Arctic spring, Geophys. Res. Lett., 41, 2582-2589.
• Koo, J.-H., Y. Wang, T. P. Kurosu, K. Chance, A. Rozanov, A. Richter, S. J. Oltmans, A. M. Thompson, J. W. Hair, M. A. Fenn, A. J. Weinheimer, T. B. Ryerson, S. Solberg, L. G. Huey, J. Liao, J. E. Dibb, J. A. Neuman, J. B. Nowak, R. B. Pierce, M. Natarajan, and J. Al-Saadi (2012), Characteristics of tropospheric ozone depletion events in the Arctic spring: Analysis of the ARCTAS, ARCPAC, and ARCIONS measurements and satellite BrO observations, Atmos. Chem. Phys., 12, 9909-9922.