Panta Rhei – Everything Flows Change in Hydrology and Society IAHS Scientific Decade 2013-2022 www.iahs.info/pantarhei

Details of the Proposal

Title of the Working Group

Modeling Hydrological Processes and Changes

Abstract of the proposed research activity

Hydrological processes both in catchment and urban area have been changing due to the dual impacts of climate changes and human activities, and modeling the hydrological processes and changes has long been the goal of the global hydrological communities. Challenges still exist, such as lacking effective models and in-situ observation data. This working group will address the challenges in modeling hydrological processes and changes. The working group will split into 3 sub-working groups to address three integrated issues.

 Sub-working group A: In-situ and remote sensing observation To observe hydrological processes, including evaportranspiration, soil moisture, runoff, groundwater, floods, drought, landslides and mudflows, data fusion and assimilation. Long established experiment catchments and urban test beds will be sought and databases for public assess will be set up. There are already many archived databases in the world, and they shall be utilized, collaborations with international bodies will be sought.

 Sub-working group B: Hydrological models and tools New hydrological models and tools that could be used to simulate/predict hydrological processes and changes will be proposed, and simulation systems based on high performance computers will be developed for public use, cutting- edge techniques and data supporting the modeling will be explored, and the uncertainties associated and its controlling methods will be studied.

 Sub-working group C: Changes of hydrological regimes Observe and simulate hydrological processes changes including but not limited to evaportranspiration, soil moisture, runoff, groundwater, floods, drought, landslides and mudflows. Worldwide case studies in large rivers and urbanized areas will be sought. Panta Rhei Research Themes, Targets and Science Questions addressed by the Working Group

Targets:

1. Understanding 2. Estimation and prediction 3. Science in practice Science Questions

2. How do changes in hydrological systems interact with and feedback on natural and social systems driven by hydrological processes? 4. How can we use improved knowledge of coupled hydrological-social systems to improve model predictions, including estimation of predictive uncertainty and assessment of predictability? 5. How can we advance our monitoring and data analysis capabilities to predict and manage hydrologic change? 6. How can we support societies to adapt to changing conditions by considering the uncertainties and feedbacks between natural and human-induced hydrologic changes? Societal impact of the Working Group activity

Hydrological changes has a great impact on the societies, such as the enhanced flooding will increase the vulnerability of the society to the natural disasters, the more frequent drought will intensify the shortage of water supply and the deterioration of ecological system. This WG’s activities will increase the capabilities of the societies’ understanding and prediction to the hydrological processes changes, thus improving the abilities the societies to adapte to the hydrological changes.

List of Participants(more to be added)

Name of Affiliation Role in Country Participant Working Group (Chair or Member) Sun Yat-sen University Yangbo Chen Chairman China E-mail:[email protected] Chris Hopkinson University of Lethbridge Member Canada [email protected] North China Electric Power University Guohe Huang Member Canada E-mail: [email protected] Institut de Recherches pour le Frédérique Seyler Développement Member France E-mail: [email protected] University of Twente Z. (Bob) Su Member Netherlands E-mail: [email protected] Swansea University Ian Cluckie Member UK E-mail: [email protected] University of Bristol Dawei Han Member UK E-mail: [email protected] Swansea University Yunqing Xuan Member UK E-mail: [email protected] Beijing Normal University Qingyun Duan Member USA [email protected] Qizhong (George) Rutgers University Member USA Guo E-mail: [email protected] University of Oklahoma Yang Hong Member USA E-mail: [email protected] University of California, Irvine Kuolin Hsu Member USA E-mail: [email protected] Hydrosystems Research Laboratory Ramesh E-mail: [email protected] Member USA Teegavarapu [email protected] Old Dominion University Xixi Wang Member USA E-mail: [email protected] Florida State University Xiaojun Yang Member USA Email: [email protected] Hohai University Zhongbo Yu Member USA E-mail: [email protected] Yongqin David The Chinese University of Hong Kong Hong Kong, Member Chen Email: [email protected] China Nanjing Hydraulics Research Institute Qiuwen Chen Member China E-mail: [email protected] Chinese Academy of Sciences Xi Chen Member China E-mail: [email protected] Yaning Chen Chinese Academy of Sciences Member China E-mail: [email protected] Hohai University Yuanfang Chen Member China E-mail:[email protected] Southeast University Yanfen Geng Member China E-mail: [email protected] Zhengzhou University Caihong Hu Member China E-mail: [email protected] Guoru Huang E-mail: [email protected] Member China National Climate Center Tong Jiang Member China E-mail: [email protected] Hefei University of Technology Juliang Jin Member China E-mail: [email protected] Sichuan University Chuan Liang Member China E-mail: [email protected] Sun Yat-sen University Kairong Lin Member China E-mail: [email protected] Pan Liu Wuhan University Member China E-mail: [email protected] Sichuan University Member China Tiegang Liu E-mail: [email protected] Tsinghua University Guangheng Ni Member China E-mail:[email protected] Beijing Normal University Dingzhi Peng Member China E-mail: [email protected] Sichuan University Guanghua Qin Member China E-mail:[email protected] Northwest A&F University Songbai Song Member China [email protected] Beijing Normal University Wenchao Sun Member China E-mail: [email protected] Chinese Academy of Sciences, Xiangjun Tian Member China E-mail: [email protected] Dong Wang Nanjing University Member China E-mail: [email protected] [email protected] Beijing Normal University Guoqiang Wang Member China Email: [email protected] Nanjing Hydraulic Research Institude Guoqing Wang E-mail:[email protected] Member China [email protected] Sun Yat-sen University Xianwei Wang Member China E-mail: [email protected] Chinese Academy of Sciences Zhenghui Xie Member China E-mail: [email protected] Wuhan University Lihua Xiong Member China E-mail: [email protected] Zhejiang University Yueping Xu Member China Email: [email protected] Beijing Normal University Zongxue Xu Member China E-mail: [email protected] Chinese Academy of Sciences Jingjie Yu Member China E-mail: [email protected] Hohai University Tao Yang Member China E-mail: [email protected]

Xingnan Zhang Hohai University Member China E-mail: [email protected] Huazhong University of Science & Jianzhong Zhou Technology Member China E-mail: [email protected] South China Agricultural University Maichun Zhou E-mail: [email protected] Member China [email protected] Tongji University Nianqing Zhou Member China [email protected] Zhengzhou University Qiting Zuo E-mail: [email protected] Member China [email protected].