报告人：Ted A. Scambos(资深研究员Senior Research Scientist)

时间：2022.12.7 9:30-11:00

Zoom会议：869-124-78507

密码：见邮件或班级通知

报告人简介

Dr. Ted Scambos is now a Senior Research Scientist at the University of Colorado’s Earth Science and Observation Center at University of Colorado Boulder. Prior to this position, he was Lead Scientist at the National Snow and Ice Data Center for 14 years (2004-2018), a part of the university. He received degrees in geology and geochemistry from University of Stony Brook, Virginia Tech, and the University of Colorado. Dr. Scambos' research has focused on the use of remote sensing to study the polar regions, and the exploration of the effects of climate change on the poles. He has been on 21 expeditions to Antarctica, working with the British, Australian, South Korean, Argentinian, and Norwegian research programs to explore most areas of the continent and its surrounding ocean. He has published extensively on polar ice loss and glacier acceleration, changes in Arctic and Antarctic sea ice, the evolution of icebergs, and wind-snow interactions on the high East Antarctic Plateau. He is currently the Principal Investigator for the Science Coordination Office of the International Thwaites Glacier Collaboration. Dr. Scambos contributes to two ongoing science analysis blogs, the Arctic Sea Ice News and Analysis report (nsidc.org/arcticseaicenews/) and Greenland Today report on ice sheet melting (nsidc.org/greenland-today).

报告简介

The marine ice sheet instability, a process in which an ice sheet with a deep sub-glacial bed can be induced into a self-reinforcing collapse by a relatively small initial retreat, presents a great concern for researchers studying the West Antarctic Ice Sheet. Such a collapse would raise the pace of sea level rise dramatically. At the center of this ice sheet is Thwaites Glacier, a huge ice stream that is both retreating and thinning rapidly. This glacier is thought to be on the verge of e retreat that would eventually remove much of the ice sheet. In 2018, the US and UK launched a major research program on Thwaites Glacier (the ITGC), consisting of eight research projects and a coordinating science office. The ITGC is aimed at characterizing the current state of the glacier and predicting its near-term future. We will review the concerns about the West Antarctic Ice Sheet, present the research focus of the eight projects, and review some of the recent results of the work.