2018.09 - present | Adjunct Professor, Division of Environmental Science and Engineering, POSTECH |
2018.09 - 2019.07 | Visiting Professor, Tratnyek’s group, Institute of Environmental Health, OHSU |
2017.03 - 2018.08 | Director, BK21 Plus Institute of Earth-Atmosphere-Astronomy, Yonsei University |
2017.08 | Guest Professor, Prof. Kraemer's Group, University of Wien, Austria |
2013.01 - 2015.02 | Associate Dean of Strategic Planning, College of Science, Yonsei University |
2012.07 - 2012.08 | Visiting Professor, School of Earth and Environmental Sciences, Chapman Univ., CA, USA |
2012.05 - 2012.06 | Visiting Scholar, EAWAG (Swiss Federal Institute of Aquatic Science & Technology), Switzerland |
2011.07 - 2012.06 | Visiting Scientist, Geoscience Group, Pacific Northwest National Laboratory, USA |
2009.03 - 2011.02 | Department Chair, Dept. of Earth System Science, Yonsei Univ. |
2005.03 - present | Assistant/Associate/Professor, Dept. of Earth System Sciences, Yonsei University |
2004.06 - 2005.01 | Postdoctoral Staff II, Field Hydrology and Chemistry Group, Pacific Northwest National Laboratory |
2001.10 - 2004.05 | Postdoctoral Scholar, Environmental Science and Engineering, California Institute of Technology |