Ocean temperature impact on ice shelf extentin the eastern Antarctic Peninsula
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- Ocean temperature impact on ice shelf extentin the eastern Antarctic Peninsula
- Other Titles
- 남극 동부 대륙의 빙붕에 수온이 미치는 영향
- Johan Etourneau
Jaap S. Sinninghe Damste
- Antarctic ice shelf; subsurface ocean temperature
- Issue Date
- Johan Etourneau, et al. 2019. "Ocean temperature impact on ice shelf extentin the eastern Antarctic Peninsula". NATURE COMMUNICATIONS, 10(304): 1-8.
- The recent thinning and retreat of Antarctic ice shelves has been attributed to both atmosphere and ocean warming. However, the lack of continuous, multi-year direct observations as well as limitations of climate and ice shelf models prevent a precise assessment on how the ocean forcing affects the fluctuations of a grounded and floating ice cap. Here we show that a +0.3？1.5 °C increase in subsurface ocean temperature (50？400 m) in the northeastern Antarctic Peninsula has driven to major collapse and recession of the regional ice shelf during both the instrumental period and the last 9000 years. Our projections following the representative concentration pathway 8.5 emission scenario from the Fifth Assessment Report of the Intergovernmental Panel on Climate Change reveal a +0.3 °C subsurface ocean temperature warming within the coming decades that will undoubtedly accelerate ice shelf melting, including the southernmost sector of the eastern Antarctic Peninsula.
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