YEONSANG HWANG, Ph.D., P.E.

E-mail: Yeonsang.Hwang (at) colorado.edu

 

RESEARCH INTEREST

Statistical Interpolation of Climate Variables, Statistical Downscaling of Climate Data, Rainfall-Runoff Modeling, Hydrologic Model Sensitivity, Climate Change Impact, Watershed Hydrology, Water Resources Management, Economics on Water Resources, International Water Policy, Water Pricing, Water Conflict Resolution

EDUCATION

2001-2005

 

Ph.D., Department of Civil, Environmental, and Architectural Engineering, University of Colorado, Boulder, CO

1991-1993

 

M.S., Department of Civil Engineering, Yonsei University, Seoul, KOREA


TEACHING EXPERIENCE

2009-present

Arkansas State University, Jonesboro, AR, Assistant Professor of Civil and Environmental Engineering,

Courses: Fluid Mechanics (with lab.), Water and Waste Systems, Engineering Hydrology, Introduction to Environmental Engineering, Statics, Concepts of Engineering.

2007-2009

 

Valparaiso University, Valparaiso, IN, Visiting Assistant Professor of Civil Engineering.
Courses: Fluid Mechanics, Hydrology, Mechanics of Materials, Soil Mechanics, Soil and Foundation Engineering

1991-1992

 

Yonsei University, Seoul, KOREA, Teaching Assistant,
Course: Fluid Mechanics, Computational Methods


RESEARCH EXPERIENCE

2006-2007

 

Research Associate, University of South Carolina, Columbia, SC
;Research member at CISA (Carolinas Integrated Science & Assessment) project as a part of NOAA RISA program.  Stochastic drought forecast using flexible non-parametric technique. Climate impact analysis in Carolinas’ watersheds using hydrologic simulation model (BASIN/HSPF).

2002-2005

 

Research Assistant, University of Colorado, Boulder, CO
;Conducted research on the impact of spatial interpolation techniques and input uncertainties of climate variables on a distributed hydrologic model as a part of developing ensemble streamflow forecast technique sponsored by NOAA GAPP program and the NOAA RISA Program

1991-1993

 

Research Assistant, Yonsei University, Seoul, KOREA
;Conducted runoff estimation using ILLUDAS and RRL model for risk analysis project on 54 retention ponds in the City of Seoul.
;Conducted the 2D flow surface simulation of Dorim-Cheon (a branch stream of Han River) using RMA2 hydraulic model (part of Corp of Engineers’ TABS modeling system).


AFFILIATIONS

American Society of Civil Engineers

American Society of Engineering Educators

Korea Water Resources Association

Graduate Program in Environmental Sciences, Arkansas State University (affiliated faculty).

Graduate Faculty of Purdue University, Department of Construction Science & Organizational Leadership.

Journal Reviewer; Journal of the American Water Resources Association, Journal of Hydrology, Stochastic Environmental Research and Risk Assessment, Water Resources Research


WORK EXPERIENCE

2000-2001

 

Leading Engineer of Water Resources Section, Waterworks and Sewage Design Team, LG E&C, Seoul, KOREA.

1997-2000

 

Research Member, Construction Technology Institute, LG E&C, Seoul, KOREA.

1996-1997

 

Research Member, Ex-Const Task Force Team, LG E&C, Seoul, KOREA.

1993-1996

 

Research Member, Construction Technology Institute, LG E&C, Seoul, KOREA.


SOME PUBLICATIONS AND PRESENTATIONS

Yeonsang Hwang, Martyn Clark, and Balaji Rajagopalan (2011), “Use of daily precipitation uncertainties in streamflow simulaton and forecast”, Stochastic Environmental Research and Risk Assessment, 25(7), 957-972. DOI: 10.1007/s00477-011-0460-1

Yeonsang Hwang, Martyn Clark, Balaji Rajagopalan, and George H. Leavesley (2011, in print), “Spatial interpolation schemes of daily precipitation for hydrologic modeling”, Stochastic Environmental Research and Risk Assessment.

Yeonsang Hwang, Jun-Haeng Heo, and Younghun Jung (2011), “Ensemble Daily Streamflow Forecast Using Two-step Daily Precipitation Interpolation”, Journal of Korea Water Resources Association, 44(3), 209-220.

Yeonsang Hwang, Younghun Jung, Kwangsuop Lim, and Jun-Haeng Heo (2010), “Comparison of Daily Rainfall Interpolation Techniques and Development of Two Step Technique for Rainfall-Runoff Modeling”, Journal of Korea Water Resources Association, 43(12), 1083-1091.

Yeonsang Hwang and Gregory Carbone (2009), “Ensemble forecast of drought indices using a conditional residual resampling technique”, Journal of Applied Meteorology and Climatology, 48(7), 1289–1301.

Yeonsang Hwang, Monthly to seasonal
probabilistic drought forecast based on climate variability, Southwest Regional ACS Meeting, Austin, TX, November 9~12, 2011 (invited).

Yeonsang Hwang and Gregory Carbone, Ensemble forecast of monthly drought indices in South Carolina, The Climate Prediction Applications Science Workshop, Seattle, WA, March 20~23, 2007.

Yeonsang Hwang, Martyn Clark, and Balaji Rajagopalan, Impact of Spatial Interpolation Methods for Precipitation on Ensemble Streamflow Simulation From Watershed Models, AGU 2005 Joint Assembly, New Orleans, May 23~27, 2005.

Yeonsang Hwang, Martyn Clark, Balaji Rajagopalan, and Subhrendu Gangopadhyay, “Spatial interpolation schemes for climate variables and applications in hydrologic modeling”, International Conference on Hi-Impact Weather and Climate: Understanding, Prediction, and Socio-Economic Consequences, Seoul, KOREA, March 22~24, 2004.


DISSERTATION & THESIS

Yeonsang Hwang, “Impact of input uncertainty in ensemble stream flow generation”, Doctoral Dissertation, University of Colorado, Boulder, CO, 2005.

Yeonsang Hwang, “Analysis of Flood Level due to the Reclamation of Sat-Gang (branch stream) in Han River”, M.S. Thesis, Yonsei University, Seoul, KOREA, March 1993.


PATENT & COPYRIGHT

Yeonggi Oh, Yeonsang Hwang, and Kyeongsoo Lee, “Nutrient Removal Technique for Wastewater using Pre-located Anoxic Tank Process (LG Bio-NET)”, certified as New Construction Technology (Certified by Ministry of Construction and Transportation) at Construction Technology Institute, LG E&C, Seoul, KOREA, 2000.

Yeonggi Oh, Yeonsang Hwang, and Heonsoo Park, “Wastewater Treatment Process”, patent registered at Construction Technology Institute, LG E&C, Seoul, KOREA, 1999.

Yeonggi Oh, Yeonsang Hwang, and Heonsoo Park, “Rectangular Settlement Pond for Wastewater Treatment Process”, filed for patent registration at Construction Technology Institute, LG E&C, Seoul, KOREA, 1998.


ADDITIONAL INFORMATIONS

Registered Professional Engineer in Arkansas since 2011

Registered Professional Engineer in Water Resources Development in Korea since 2000.
Certificate of the first rate license in general civil engineering in Korea, 1992.
Enjoy photography (
http://mountainbread.org/), blogging, hiking, and skiing.