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Future mass loss of Thwaites Glacier, West Antarctica and its sea level contribution

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Title
Future mass loss of Thwaites Glacier, West Antarctica and its sea level contribution
Other Titles
미래 서남극 스웨이츠 빙하 질량 손실과 해수면 상승 예측
Authors
Jin, Emilia Kyung
Park, Inu
Lee, Won Sang
Keywords
Antarctic MeltingIce Sheet ModelSea Level RiseThwaites Glacier
Issue Date
2020
Citation
Jin, Emilia Kyung, Park, Inu, Lee, Won Sang. 2020. Future mass loss of Thwaites Glacier, West Antarctica and its sea level contribution. 2020 AGU Fall Meeting. Online. 2020.12.01~2020.12.17.
Abstract
The sensitivity to the ocean melt parameterization under ice shelf of future mass loss of Thwaites Glacier, West Antarctica and its sea level contribution is investigated. 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. Linear, PICO(Potsdam Ice-shelf Cavity mOdel), and PICOP(PICO and a plume model) melt parameterizations are implemented and compared. The future projections forced by changes in atmospheric and oceanic forcings based on both idealized and IPCC RCP(Representative Concentration Pathway) scenarios from CMIP5 climate models are carried out upto 2300. For idealized scenarios, far ocean temperature and salinity are prescribed in certain values, while they come from climate models forced by RCP scenarios in cases of realistic scenarios. The quantitative and qualitative changes in ice velocity, ice mass, and sea level contribution are analyzed and the different characteristics induced by melt parameterizations are compared. PICOP projects more vigorous basal melting and ice mass loss than PICO, but the sea level contribution is not linear to the ice mass loss all the time implying the certain role of ocean properties. It also shows that the changes in regional ice velocity show unique characteristics for each melt parameterization
URI
https://repository.kopri.re.kr/handle/201206/12376
Conference Name
2020 AGU Fall Meeting
Conference Place
Online
Conference Date
2020.12.01~2020.12.17
Type
Proceeding
Indexed
Pro(초록)국외
Appears in Collections  
2020-2020, 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 - (20-20) / Lee, Won Sang (PM20020)
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