https://repository.kopri.re.kr/handle/201206/9709 Mon, 27 Apr 2026 05:50:47 GMT 2026-04-27T05:50:47Z https://repository.kopri.re.kr/handle/201206/11118 Title: Investigation of key elements in future projections of East Antarctic Ice Sheet using ice sheet model Authors: Jin, Emilia Kyung Tue, 31 Dec 2019 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/11118 2019-12-31T00:00:00Z https://repository.kopri.re.kr/handle/201206/12431 Title: Sea level projections using ice sheet model based on RCP scenarios at David Glacier, East Antarctica Authors: Park, In-Woo; Jin, Emilia Kyung; Lee, Kang Kun; Lee, Won Sang; Morlighem, Mathieu; Lee, Choon-Ki; Young, Duncan A; Blankenship, Don; Beam, Lucas Abstract: A net ice mass change contributing to the change in global sea level is mainly estimated from the ice mass discharge at grounding line, and the mass gain or loss from surface mass balance (SMB), which is calculated as precipitation minus evaporation. In addition, basal mass balance and frontal mass balance can be also considered. The ice mass discharge can be calculated by ice sheet model, while SMB can be produced by couple global climate model (CGCM) with large discrepancies among models due to uncertainties in physical parameterizations. Here, we conduct a series of future projection experiments using Ice Sheet System Model (ISSM) forced with RCP-based SMB from 19 CMIP5 CGCMs with total 177 ensemble members for investigating the contribution of ice mass change at David Glacier, East Antarctica to the global sea level upto 2100 (~2300). Recently, an additional ice radar survey was performed at study area and merged with previous dataset to produce a new bed geometry, which reveals a sharp subglacial ridge above sea level stabilizing an ice flow. Therefore, we only focus on the effect of change in SMB on the sea level change. A gradual increase in ice volume related with CGCMs’ SMB increase is shown in most ice sheet model projections, however, projections forced by GISS-E2-R and IPSL-CMA5A-MR SMB with RCP8.5 scenario display an increase in sea level equivalent for 0.72 mm and 0.31 mm respectively from 1950 to 2100. A total mean of sea level equivalent from 177 ensemble projections is -0.70 mm (sea level decrease) for RCP4.5 and -1.51 mm for RCP8.5 until 2100 year, moreover, RCP8.5 scenario until 2300 projection exhibit sea level decrease of -4.66 mm owing to continuous increase in SMB at study area. Tue, 01 Jan 2019 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/12431 2019-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/12681 Title: Accelerated global warming and implications of the IPCC Special Report on 1.5°C Authors: Jin, Emilia Kyung Abstract: In 2018, an IPCC special report on Global Warming of 1.5 ºC is published. This report describes the impacts of global warming of 1.5 °C above pre-industrial levels and related global greenhouse gas emission pathways in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty. Human activities are estimated to have caused approximately 1.0°C of global warming above pre-industrial levels, and global warming is likely to reach 1.5°C between 2030 and 2052 if it continues to increase at the current rate. Climate-related risks for natural and human systems are higher for global warming of 1.5°C than at present, but lower than at 2°C. By 2100, global mean sea level rise is projected to be around 0.1 metre lower with global warming of 1.5°C compared to 2°C and a slower rate of sea level rise enables greater opportunities for adaptation in the human and ecological systems of small islands, low-lying coastal areas and deltas. The probability of a sea-ice-free Arctic Ocean during summer is projected as one per century, while this likelihood is increased to at least one per decade with 2°C global warming. Pathways limiting global warming to 1.5°C with no or limited overshoot would require rapid and far-reaching transitions in energy, land, urban and infrastructure, and industrial systems, which are unprecedented in terms of scale. In model pathways with no or limited overshoot of 1.5°C, global net anthropogenic CO2 emissions decline by about 45% from 2010 levels by 2030, reaching net zero around 2050. All pathways that limit global warming to 1.5°C with limited or no overshoot project the use of carbon dioxide removal (CDR) on the order of 1001000 GtCO2 over the 21st century. However, most current and potential CDR measures could have significant impacts on land, energy, water, or nutrients if deployed at large scale. Tue, 01 Jan 2019 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/12681 2019-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/12451 Title: Antarctic changes and its global connections Authors: Jin, Emilia Kyung Abstract: Exploring the geological, oceanic, and atmospheric changes in Antarctica, the interannual and decadal variability including trend could be considered in the context of the global climate. To identify the mechanisms and interactions between local and remote systems, which could be competitive or complimentary, recent approaches and theories are summarized as keys to understand the underlying basics of Antarctic changes and its global connections. Tue, 01 Jan 2019 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/12451 2019-01-01T00:00:00Z