Due to rapid population growth and climate change, there are severe spatiotemporal variations of water resources in the globe, and our society is facing serious challenges in securing sufficient water. To tackle the water shortage, we need to find other water sources. An effective and possible way is to utilize atmospheric water resources, which are the precipitable water in the atmosphere. With relatively stable temporal and spatial distribution, this part of water resources can be exploited and utilized through artificial precipitation enhancement operations which is also known as cloud seeding. In this talk, Professor Chen will introduce the situation of atmospheric water resources and the method that implements low frequency acoustic waves to stimulate and enhance precipitation. Through indoor experimental analysis and a large number of field tests, the effect has been tested. The development and utilization of atmospheric water resources would provide an innovative measure to obtain more freshwater for a certain region. He will also discuss the atmospheric water resources in the Greater Bay Area.
Please join the talk via the Zoom link below:
https://hku.zoom.us/j/94407278760?pwd=bG0zV3FQeTNvR2laVUVXWHpUTE9adz09
Meeting ID：944 0727 8760
Password：211228
Ji Chen is Professor at Department of Civil Engineering of The University of Hong Kong (HKU). He obtained his PhD degree from UIUC, and ME and BE degrees from Tsinghua University, and joined HKU in September 2004. His research interests lie in water resources, terrestrial hydrologic processes, climate change, urbanization, natural hazards and remote sensing. He has graduated fourteen PhD students and is an author of more than 90 research journal papers. Prof. Chen is an associate editor of three international research journals: Journal of Hydrology, Journal of Hydro-Environment Research, and Stochastic Environmental Research and Risk Assessment. He was the president the Hydrological Sciences Section in Asia Oceania Geosciences Society (2018-2020) and the chairman of the International Association for Hydro-Environment Engineering and Research-Hong Kong Chapter (2019-2021). He is serving AGU Lal Medal Committee (2020-) and AOGS Awards Committee (2021-).
Clean water and clean air are vital for public health. This project focuses on developing high-efficiency and environmentally sustainable filters for removing harmful air/water pollutants. The team has developed novel architectures and functionalities for the filters to achieve high permeance, high removal efficiency, and excellent reusability.
