He Xin, Master of Danish Technical University, Ph.D., University of Copenhagen. Work in Denmark and Greenland Geological Survey for five years. The main research direction is the theory and simulation of river basin water cycle, including surface water, groundwater, gas zone simulation and model calibration and tuning. Especially for the three-dimensional distributed integrated hydrological model of the uncertainty of in-depth study. Specializes in the collection and processing of spatial information, such as weather radar data and sounding transient electromagnetic data. Participated in a number of research and consulting projects related to various areas of hydrology and water resources, including urban water, agricultural irrigation, groundwater quality, real-time monitoring of water resources simulation. Living in Europe for many years, has a broad international perspective, and a number of international top experts have had cooperation. Regular participation in the Danish and European Union project plan writing. At the same time, it is also a reviewer of several well-known journals such as Water Resources Research, Journal of Hydrology, Hydrological Sciences Journal, Science of the Total Environment, Hydrogeology Journal.

1) Basin water cycle and water balance 2) Uncertainty analysis of hydrological simulation 3) Three-dimensional geological structure model 4) Quantitative precipitation based on meteorological radar 5) Real-time monitoring and simulation of hydrological information