Time：Oct 18（Sunday）9:30-10:30AM
Location：16-221
[Online]: Zoom Meeting ID: 348 215 8753
Speaker：Jianli Chen, Senior Research Scientist at the Center for Space Research, University of Texas at Austin
Speaker Introduction: Dr. Jianli Chen is a Senior Research Scientist at the Center for Space Research, University of Texas at Austin. He has been working on topics related to the global climate change and geophysical applications of space geodetic measurements (including satellite altimetry, satellite gravimetry, and GPS measurements) for 30 years. He has been extensively involved in data processing, results validation, and geophysical interpretation of GRACE observations, and has demonstrated a throughout understanding of the GRACE mission from data acquisition to geophysical applications. He is a fellow of the International Association of Geodesy, and has severed as the chair of the IERS Special Bureau for Hydrology since 2004, and co-chair/chair of the IAG Commission 3.3 (Earth Rotation and Geophysical Fluids) since 2012. He currently serves as a leader of the WCRP Grand Challenge WP6 (“The global sea level budget”). He was a recipient of the NASA New Investigator Program (NIP) award in 2004, and received the prestigious 2005 Presidential Early Career Awards for Scientists and Engineers (PECASE, the highest honor bestowed by the United States government on outstanding scientists and engineers in the early stages of their independent research careers). He has published ~ 120 refereed journal publications, with about half as lead author.
Summary: The Earth climate system has experienced significant changes over the past several decades driven by global warming. Global climate change is characterized by changing long-term variability in different components of the Earth system, including the atmosphere, ocean, hydrosphere, and cryosphere. The first part of this presentation will give an overall picture of global climate change using data from state-of-the-art Earth observation techniques. Since the launch of the Gravity Recovery and Climate Experiment (GRACE) in 2002, satellite gravimetry has provided a revolutionary means for measuring large-scale mass variations in the Earth system with unprecedented accuracy. Time-variable gravity measurements from GRACE and GRACE Follow-On (GFO, launched in 2018) have been successfully used to study water mass movement and redistribution in different components of the climate system, and greatly improved our understanding of climate change. The second part will introduce GRACE/GFO applications using examples in different areas of climate change studies.
