Research Seminar: GNSS Tropospheric Sounding - The Way Forward
-
Date
10 Jan 2023
-
Organiser
Department of Land Surveying and Geo-Informatics (LSGI)
-
Time
17:00 - 18:00
-
Venue
Z414 & Zoom (Hybrid) Map
Speaker
Prof. Kefei Zhang
Enquiry
Ms Anna Choi 3400 8158 anna.choi@polyu.edu.hk
Remarks
Deadline for registration: 3:00pm, 9 Jan 2023
Summary
Water vapor is one of the most important parameters that can be used to investigate extreme weather events and climatic phenomena. Effective monitoring and analyses of the water vapor contents are of great significance for analysing various types of meteorological disaster events and climatic changes. On the other hand, the Global Navigation Satellite Systems (GNSS), as a relatively newly emerged atmospheric sounding technique, has been widely applied to the sounding of atmospheric water vapor. The performance of the GNSS water vapor sounding technique has experienced unprecedented developments with the substantial strengthened “richness” of multi-frequency and multi-mode, as well as its global operation ability and the rapid deployment of wide-spread ground- and space-based infrastructures. All these offer strong data support and a great opportunity to advance our knowledge and an in-depth understanding of climate change and extreme weather events. This report presents the GNSS water vapor sounding fundamentals first, followed by the current status, recent international frontier developments and our latest research efforts in the area, including, but not limited to, the ground-, air- and space-based GNSS sounding techniques. First, the background and theory of the GNSS tropospheric sounding technique are comprehensively summarized. Then, the theory, technical features and major advancement of the GNSS-derived atmospheric products in the applications of climate analyses and extreme weather forecasting are presented. Finally, the challenges, opportunities and future prospectives in terms of the technique and its innovative applications of national and international significance are provided.
Keynote Speaker
Prof. Kefei Zhang
Professor of China University of Mining and Technology
Honorary Professor of RMIT University, Australia
Dr. Kefei Zhang, is a Fellow of The International Association of Geodesy (IAG). He is currently a Distinguished Professor at China University of Mining and Technology, Executive Member of University Academic Council and the Director of the Institute of Resources and Environment and Centre of Space Mining. He has been an Honorary Professor of RMIT University, Australia since 2020 where he established the SPACE Research Centre from scratch to an important international hub of geospatial research and innovation and over 20 large national / international competitive grants were attracted. His near 30-year academic career involves working in the UK, Australia and China and has been instrumental in driving new initiatives and major successes. He is also the Director of the Bei-Stars Geospatial Innovation Institute (Nanjing). Professor Zhang got his bachelor and master’s degrees from Wuhan University and PhD from Curtin University. He has supervised over 30 post-doctoral research fellows and 40+ research students to their successful completion. A number of these have received both national and international prestigious awards. His research is of both fundamental and applied in nature including developing new methodologies, technological innovations (knowledge transformation) and new applications. The areas of his expertise span from GNSS/geodesy, precise PNT, climate and weather, space situational awareness to space resources utilization and exploitation, people mobility and object tracking as well as emergency management of underground spaces. He has coauthored over 500 journal and conference articles (210+ of which is SCI) and 40 patents in these fields of research. The research work he led has been reported widely in world media. His research was ranked as “outstanding” in the Excellence in Innovation for Australia Trial 2012 and was featured in the ATN of Universities “50 solutions that count”. His work was also showcased at the Shanghai World Expo 2010 during the “Partners for a Better Future –Australia and China: Science and Technology Week”.
