报告人：Yadu N. Pokhrel, Assistant Professor, Michigan State University

报告人简介：Yadu N. Pokhrel博士毕业于日本东京大学，曾在日本北海道大学和美国罗格斯大学做博士后研究，现为密歇根州立大学土木与环境工程系助理教授。Pokhrel博士致力于人类活动和气候变化共同影响下的水循环变化研究，尤其关注各种人类活动如土地利用/覆盖变化、水库调度、跨流域调水、灌溉、地下取水等过程对水循环过程的直接影响。Pokhrel博士的具体研究工作是将人类活动影响参数化耦合到大尺度水文模型、地球系统模型等并进行模拟研究，研究成果发表在多个高影响因子期刊（如Nature Geoscience）。

报告简介：

This talk provides an overview of the recent advancements in modeling human activities (e.g., irrigation, reservoir operation and water diversion, groundwater pumping) with a particular emphasis on the incorporation of these human factors into global and regional land surface models (LSMs) for their integration into Earth system models (ESMs). The algorithms currently employed to account for human land-water management in large-scale models are discussed in close dialogue with model simulations and observations, the methodological deficiencies in current modeling approaches and existing challenges are highlighted, and light is shed on the sources of uncertainties associated with model parameterizations and grid resolution as well as with the datasets used for forcing and validation. Results from global and regional LSMs, which take into account both natural and human-induced changes in the water cycle, are used to demonstrate the importance of representing human factors in large-scale hydrological models. Model results are presented in close dialogue with the observations of river discharge including flow regulation by dams, evapotranspiration, irrigation and groundwater use, changes in water table depth, and the variation of terrestrial water storage (TWS) over a wide range of basin scales around the world. Observational data of various hydrologic fluxes from ground-based observations and TWS inferred from the GRACE (Gravity Recovery and Climate Experiment) satellite mission are used to support model results.

主持人：汤秋鸿研究员

时间：2016年8月2日（周二）上午9:00

地点：中国科学院地理资源所地理科学馆411会议室