PhD Research - Kyongho Son

The sensitivity of ecohydrologic responses to climate change varies across gradients in elevation, aspect, vegetation, soil and climate condition between and within watersheds. Moreover, mountain watersheds have high heterogeneity in atmospheric forcing, topography, vegetation and soil properties over relatively short spatial scales. Therefore, a key challenge in modeling for climate change assessment of mountain watersheds is how to account for high spatial heterogeneities of climate, topography, vegetation and soil in mountain watersheds. My esearch aims to assess the importance of considering variation of topography, vegetation, soil and microclimate at fine spatial scales (<30 meters) in estimating aggregated watershed scale ecohydrologic response to inter-annual variation in climate and climate change.

Kyongho Son received a BSC in the Department of Environmental Engineering, Pusan National University, South Korea, and an MS in the School of Environmental System Engineering at the University of Western Australia. Prior to pursuing his PhD at the Bren School, Kyongho spent two years working as a researcher at the Korea Institute of Water and Environment. He began his doctoral work in 2008, and his research focuses on developing an ecohydrologic modeling framework to improve our understanding of how climate change affects ecohydrologic cycles in Sierra Nevada catchments. His PhD advisor is Dr. Naomi Tague, with committee members Drs. Jeff Doizer and Arturo Keller.



K.Son, and M.Sivapalan. 2007. "Improving model structure and reducing parameter uncertainty in conceptual water balance models through the use of auxiliary data," Water Research Resources, VOL. 43, W01415, doi: 10.1029/2006WR005032

J. Kim, K. Son, J. Noh, C. Jang and I. Ko. 2006. "Multi-variable and multi-site calibration and validation of SWAT for the Gap river catchment." Korea Water Resources Association

J. Kim, K. Son, J. Noh, C. Jang and I. Ko. 2006. "Evaluation of urbanization effect and analysis of hydrological characteristics in the Gap river catchment using SWAT." Korea Water Resources Association

K. Son, I. Kim, and J. Kim. "Impact of spatial-data quality to determine stream flow and suspended sediment using swat model," Korea Water Resources Association, 2007

K. Son, J. Kim. "Validation of SWAT model for prediction of the impact of the climate change and land use change on flow variability", Korea Water Resources Association, 2008.

S. Hong, J. Kim, K. Son. "Development of a water-cycle analysis system for the Kap-stream basin considering surface water-groundwater, Korea Society of Civil Engineers, 2008.


  1. California Sierra Critical Zone Observatory (funded by NSF)
  2. An Optimized Soil Moisture Sampling Design to Represent the Impact of Climate Variability on Soil Moisture and Vegetation Water Use in Snow-Dominated Watersheds (funded by Kearney Foundation of Soil Scinece)


Dean's Fellowship, Bren School

Research Grants

Kearney Foundation of Soil Science