Experienced in developing and applying hydrologic model, river hydraulic model, flood forecasting model, groundwater model, water quality model, stochastic precipitation model, snow model
*Experience with hydrodynamic numerical modeling
PIHM, SWAT, HEC-HMS and HEC-RAS
Experienced in C and FORTRAN Programming on Windows or Linux operating systems
Familiar with ArcGIS, AutoCAD, Matlab, SQL, Microsoft Office Suite, etc.
Familiar with statistical methods including regression analysis, trend analysis, correlation analysis, principal component analysis, cluster analysis, good of fit test, independence test, Monte Carlo method, Markov chain and Bayesian method
Experience with forecasting with artificial neural networks and parameter optimization using SCE-UA
Strong proposal and report writing ability
Duke UniversityJanuary 2014 to CurrentVolunteer Research Assistant Durham, NC
Exploring Potential Trends in Snowmelt Derived Peak Streamflow in a Warming Climate supported by NSF CAREER Award Performed GIS-based watershed delineation and spatio-temporal interpolation of meteorological data; Coupled the physically based hydrologic model-PIHM and the mass- and energy-balance snowmelt model -ISNOBAL; Simulated the dynamic processes of precipitation interception, snow accumulation and melt, infiltration, evapotranspiration, etc.
based on mathematical models; Simulated open channel flow, overland flow, unsaturated flow, saturated groundwater flow based on 1-D diffusive wave equations, 2-D diffusive wave equations, 1-D Richards's equation and 2- D Dupuit approximation, respectively; and solved PDEs using finite volume method; Explored the role of regional meteorological characteristics on snowmelt generated peak discharge based on coupled snowpack and streamflow dynamic modeling.
Duke UniversityOctober 2010 to December 2013Postdoc Fellow Durham, NC
Understanding and Prediction of the Impacts of Climate Change on Water Resource Availability in Snowfall Dominated Area supported by NSF-CBET Award and Duke University Faculty Start-Up Fund Analyzed the probability and statistical distribution of dry periods, wet periods, precipitation events of different magnitudes and hourly weight fractions for precipitation during an event; Developed a stochastic precipitation model using Markov chain and spell-length method; Generated numbers of precipitation series with changing frequency and intensity of extreme events through changing the statistical parameters of precipitation; Explored the role of extreme precipitation events on snow water resources based on snowpack dynamic modeling; Explored the influence of climate and watershed characteristics on soil evaporation based on the coupled PIHM and ISNOBAL model.
A Virtual Watershed for Exploring the Effects of Climate and Land Use/Land Cover on Distribution of Water Quantity and Sediments in Lake Michie Watershed supported by Duke University Nicholas School of Environment Fund Performed GIS-based watershed delineation and spatio-temporal interpolation of meteorological data; Simulated the hydrological processes of precipitation interception, infiltration, evapotranspiration, overland flow, unsaturated flow, saturated groundwater flow, channel routing and river-aquifer interactions using the hydrologic model-PIHM; Explored variation in hydrological processes due to different fraction of urban area, forest, pasture and cultivated agricultural lands.
Analysis of Temporal and Spatial Characteristics of Meteorological Droughts in North Carolina supported by Duke University Faculty Start-Up Fund Analyzed the spatial and temporal trend in drought severity, intensity, duration, frequency and area extent during the last century in North Carolina; Developed severity-area extent-frequency and severity-duration-frequency curves based on probability distribution fitting and frequency analysis; Identified the dominant control on the expressed trend in drought severity based on correlation analysis.
Research Assistant in Key Lab.
of Water Cycle & Land Surface Processes at Chinese Academy of.
SciencesSeptember 2007 to September 2010Beijing, China
Impacts of Large-Scale Inter-Basin Water Transfer Project on Terrestrial Water Cycle and Water Security supported by The Knowledge Innovation Key Project of the Chinese Academy of Sciences Performed GIS-based watershed delineation and spatio-temporal interpolation of meteorological data; Developed a conceptual mathematical model to simulate hydrological processes including infiltration, evapotranspiration, overland flow, latural flow, channel routing, soil water dynamic, groundwater recharge, etc.
based on empirical formulas and theoretical formulas; Developed a 2-D groundwater flow model and solved PDEs using ADI finite difference method; Coupled the hydrological model and groundwater flow model; Integrated calculation modules for industrial/agricultural/domestic water use, alternative water allocation plans and the South-North Water Transfer Project (SNWT); Calibrated model parameters using SCE-UA global optimization method; Analyzed changes in surface water and groundwater resources due to the implementation of SNWT project under current, A2 and B1 scenarios.
Development of Basin Scale Water Balance Analysis and Groundwater Management Tool Based on ET supported by Global Environment Facility Water Resources and Water Environment Integrated Management Project Applied SWAT model to a large-scale arid basin in North China; Performed SWAT model calibration and validation; Simulated the whole terrestrial hydrological processes using SCS curve number method for surface runoff, Muskingum method for river routing, kinematic storage model for subsurface flow, etc.
Simulated reservoir operation, irrigation operation, groundwater pumping and crop growth; Explored regional water balance and the relationship between remote sensing ET and net groundwater use under different crop structures and irrigation techniques.
Environmental impact assessment of dams & floodgates and river ecosystem restoration in Huai River, China supported by the Natural Science Foundation of China Applied SWAT model in the Huai River basin for water quantity and quality simulation; Simulated variations in peak discharge, annual runoff, runoff in the flood season and runoff in the non-flood season with/without dams to assess the impact of dams on river flow regime; Simulated water quality process under three different scenarios: having dams and polluted, non-dam but polluted, and having dams but not polluted, and assessed the contributions of dams and pollution control on water quality; Assessed the impacts of dam on in-stream ecological flow through ecological hydraulic radius approach, and Tennant approach.
Explored the relationship between water chemistry indicators and the numbers of dominant species in phytoplankton, zooplankton and benthonic animal community, and assessed the impacts of dam on the biodiversity and health extent of river ecosystem.
Research Assistant in State Key Lab.
of Water Resources & Hydropower Engineering Science at Wuhan.
May 2005 to August 2007Wuhan, China
Development of the Flood Forecasting System for the Tarim River Basin Based on 3S Technology supported by Natural Science Foundation of China Developed a multivariate linear regression model for flood forecasting and calibrated parameters using the least square method; Applied a 3-layers BP artificial neural network model to river system for flood forecasting; Performed historical flood frequency analysis; Evaluated flood forecasting results for the typical meteorological years.
Development of A New Conceptual Flood Forecasting Model Based on the Horton's Infiltration Theory Developed a conceptual rain-runoff model for river flood forecasting; Simulate surface runoff using Horton infiltration theory, simulated runoff concentration using the combination of isochronal method and unit hydrograph method, and simulated river routing using non-linear Muskingum method; Classified the historical flood events into different categories by clustering analysis; Calibrated model parameters for different flood categories; Evaluated the flood forecasting result for different flood categories.
Education and Training
Wuhan University2005Ph.D: Hydrology and Water ResourcesChinaHydrology and Water Resources 9 - 2010.7
B.S. in Hydrology and Water Resources Engineering, Wuhan University, China 2001.9 - 2005.7
Visiting Student at the Institute of Geographic Sciences, Chinese Academy of Sciences 2006.5 - 2010.9
Wang R., Kumar M. and Link T. "Potential Trends in Snowmelt Generated Peak Streamflows in a Warming Climate." Geophysical Research Letters, Under re-review, 2016. Chen X., Kumar M., Wang R., Winstral A., Marks D. "Quantitative assessment of the timing of daily streamflow peak and its variations in a snow dominated watershed." Journal of Hydrometeorology, Under review, 2016. Wang R. and Kumar M. "Analysis of temporal and spatial characteristics of meteorological droughts in North Carolina." To be submitted to Journal of Hydraulic Engineering, 2016. Wang R., Kumar M. and Marks D. "Anomalous trend in soil evaporation in semi-arid, snow-dominated watersheds", Advances in Water Resources, 2013, 57:32~40. M. Kumar, Wang R., and Link T. "Effects of more extreme precipitation regimes on maximum seasonal snow water equivalent", Geophysical Research Letters, 2012, 39 (20): L20504. Liu C., Zhao C., Xia J., Sun C., Wang R., Liu T. "An instream ecological flow method for data-scarce regulated rivers." Journal of Hydrology, 2011, 398(1):17~25. Wang R., Xia J., Wang Z.G., Li L., Chen X.D. "Impacts of climate change and the South to North water transfer project on hydrology in the Baiyangdian basin." Journal of Hydroelectric Engineering, 2012, 31(2):14~19. (In Chinese) Hao X.P., Xia J, Wang R. "Influence of Climate Change on Surface Water Environment." Journal of China Hydrology, 2010, 30(1):67~72. (In Chinese) Wang R., Xia J., Zhang W.H. "A new conceptual hydrological model and its application." Journal of China Hydrology, 2009, 29(2):1~6. (In Chinese) Wang R., Xia J., Zhu X.J., et al. "Effects of the South to North Water Transfer Project on surface water and groundwater resources in the Haihe river basin in a climate changing world." The joint IAHS&IAH Convention, IAHS Publ., 2009, 210~217. Wang R., Xia J. "Comparative study on river flow forecasting methods for river networks." WRI World Congress on Software Engineering, IEEE Publ., 2009, 199~203. Wang R., Wang Z.G., Xia J. "Advances in the integrated surface water and groundwater model." Progress in Geography, 2008, 27(4):37~41. (In Chinese) Wang R., Xia J., Zhang W.H. "Application of harmony search method in parameter estimation of non-linear Muskingum model." Water Resources and Power, 2008, 26(4):36~39. (In Chinese) Wang R., Xia J. "Changes of runoff regimes in the middle reaches of the Yellow River in Recent 40 Years." Journal of China Hydrology, 2007, 27(5):74~78. (In Chinese) Wang R., Xia J., Zhang X., et al. "Comparative study on river flow forecasting methods in the Tarim River basin." Yellow River, 2007, 29(3):29~32. (In Chinese) Wang R., Xia J. "Soil-water conservation's effects on water resources in Loess Plateau of China." Proceedings of the 3rd International Yellow River Forum on Sustainable Water Resources Management and Delta Ecosystem Maintenance, 2007:136~147. RESEARCH PROPOSALS Drafted the proposal of "A Virtual Watershed for Exploring the Effects of Climate and Land Use/Land Cover on Distribution of Water Quantity and Sediments in Lake Michie Watershed" Funded by Duke University, 2012/07-2013/07. (Principal Investigators: Dr. Mukesh Kumar) Drafted the proposal of "Tracking Salinity Intrusion in Northeast Cape Fear River under Climate Warming" Funded by WRRI (Water Resources Research Institute of the University of North Carolina System) competitive grants program, 2014/03-2015/02. (Principal Investigators: Dr. Mukesh Kumar) Drafted the proposal of "Refining forest management strategies to maximize hydrologic gains from snow dominated watersheds" Funded by NSF CAREER, 2015/02-2016/02. (Principal Investigators: Dr. Mukesh Kumar)
HONORS AND AWARDS The Second Class Scholarship of Wuhan University, 2008 Excellent Graduate Student of Wuhan University, 2008 Excellent Student of Wuhan University, 2002, 2003, 2004 & 2005 The First Class Scholarship of Wuhan University, 2004 The Second Class Scholarship of Wuhan University, 2003 The Third Class Scholarship of Wuhan University, 2002 Excellent League Member of Wuhan University, 2002, 2003 & 2004 1/4