• Dr. rer. nat. (Biogeochemistry, University of Bayreuth, Germany)

• Professor, Department of Environmental Science and Engineering, College of Engineering, Ewha Womans University

Ph.D. work (1998-2002)

• Dissolved organic matter dynamics in a deciduous forest ecosystem in Bavaria(Univ. Bayreuth, Germany)

Postdoctoral work (2002-2007)

• Effects of changing climate and acidic deposition on forested watersheds in the Adirondacks (2002-2003, SUNY-ESF, USA)

• Response of terrestrial ecosystems along the Antarctic Peninsula to changing climate (2003-2004, Arizona State University, USA)

• Hydroclimatic controls on land-water transport of dissolved organic matter and toxic contaminants in the Mekong & other SE Asian watersheds (2004-2007, GIST, Korea)

Recent positions (2007 - present)

• Assistant/Associate Professor, College of Forest and Environmental Sciences, Kangwon National University, Korea (2007-2012)

• Associate/Full Professor, Department of Environmental Science & Engineering, Ewha Womans University, Korea (2012-present)

• Visiting Scholar, School of Oceanography, University of Washington, USA (2015)

• Associate Editor, Biogeosciences, European Geosciences Union (2018-present)