- Water, Ecosystem and Environmental Science, Land surface-atmosphere interactions
- Soil moisture dynamics, Evapotranspiration, Rainfall-Runoff simulation, Flood and Drought analysis, River management, Sediment transport
- Remote sensing, ArcGIS, Model Assimilation, Artificial Intelligence, Optimization- techniques, Genetic algorithms, Artificial neural network

2001 ~ 2002 Researcher, Korea University
2007 ~ 2007 Instructor, University of New Hampshire
2007 ~ 2007 Post-Doctoral Researcher, University of New Hampshire
2007 ~ 2008 Research Physical Scientist,United States Department of Agriculture (USDA)
2009 ~ 2014 Assistant Professor, Hanyang University
2014 ~ 2020 Associate Professor, Sungkyunkwan University
2020 ~ Present Professor, Sungkyunkwan University

2019 SKKU Fellowship, Sungkyunkwan University
2020 SKKU Excellence in Research Award, Sungkyunkwan University
2022 Academic Award, Korea Water Resources Association