KOPRI Repository

Impact of bed geometry on the future projections of ice sheet melting and sea level rise

Cited 0 time in wos
Cited 0 time in scopus
Title
Impact of bed geometry on the future projections of ice sheet melting and sea level rise
Other Titles
기저기형이 빙상 용융과 해수면 상승 미래 전망에 미치는 영향
Authors
Jin, Emilia Kyung
Park, In-Woo
Morlighem, Mathieu
Lee, Won Sang
Keywords
Bed geometryfuture projectionice sheet model
Issue Date
2019
Citation
Jin, Emilia Kyung, et al. 2019. Impact of bed geometry on the future projections of ice sheet melting and sea level rise. Forum for Research into Ice Shelf Processes (FRISP) 2019. The Queen’s College, Oxford, UK. 2019.09.15~2019.09.18.
Abstract
The impact of improved bed geometry on the future projections of ice sheet melting and sea level rise is investigated. The high-resolution bed geometry BedMachine dataset based on the mass conservation method using newly measured bed elevation from the flight track airborne radar is compared with the Bedmap2 targeting the Drygalski Ice Tongue and David Glacier, East Antarctica. The 2-dimensional (2-D) shallow shelf approximation model (MacAyeal, 1989), which is implemented in the Ice Sheet System model (ISSM) (Larour et al., 2012) is used. At first, we conducted the idealized scenarios of the atmospheric and oceanic forcings including surface mass balance, floating ice melting and ice front retreat for future projections. Sensitivity experiments are conducted to verify the significant differences induced by changes in model. A series of projected simulations are compared to explore the role of forcing scenarios on the grounding line migration, surface mass balance and sea level contribution. Second, the future projections based on the IPCC RCP(Representative Concentration Pathway) scenarios from 17 CMIP5 CGCMs are carrried out. From 1950 to 2100, 39, 70, 31, and 43 ensemble experiments with RCP2.6, RCP4.5, RCP6.0 and RCP 8.5 scenarios are conducted, respectively. The changes in ice velocity and ice thickness are analyzed and global sea level changes from this region are projected. The global and regional implication of these changes are investigated.
URI
https://repository.kopri.re.kr/handle/201206/12465
Conference Name
Forum for Research into Ice Shelf Processes (FRISP) 2019
Conference Place
The Queen’s College, Oxford, UK
Conference Date
2019.09.15~2019.09.18
Type
Proceeding
Indexed
Pro(초록)국외
Appears in Collections  
2019-2019, Investigation of key elements in future projections of East Antarctic Ice Sheet using ice sheet model (19-19) / Jin, Emilia Kyung (PE19410)
2019-2020, Land-Ice/Ocean Network Exploration with Semiautonomous Systems: Thwaites Glacier (LIONESS/TG) - Toward understanding the fate of the Thwaites Glacier by abrupt collapse and its impact on global sea level changes - (19-20) / Lee, Won Sang (PM19020)
Files in This Item

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse