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A coupled model simulation of ocean thermohaline properties of the Last Glacial Maximum

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Title
A coupled model simulation of ocean thermohaline properties of the Last Glacial Maximum
Other Titles
지난최대빙하기때 해수 물성의 변화에대한 해양-대기 접합모델 시뮬레이션
Authors
Kim, Seong-Joong
Keywords
AABW; Coupled Model; LGM; NADW; thermohaline properties
Issue Date
2005
Citation
Kim, Seong-Joong. 2005. A coupled model simulation of ocean thermohaline properties of the Last Glacial Maximum. 한국 해양연구원 극지연구소. 한국 해양연구원 극지연구소. 2005.05.17~.
Abstract
The temperature and salinity of the ocean during the last glacial maximum (LGM) are simulated using a coupled ocean-atmosphere-sea ice climate model. The imposition of glacial boundary conditions leads to deep ocean heat loss to the atmosphere at high latitude convection regions through an active vertical mixing and associated turbulent heat fluxes and deepwater temperature approaches to the freezing point. The LGM conditions also modify the fresh water distribution at the ocean surface and cause a marked change in the ocean convection, overturning circulation, and ocean salinity distribution. In the LGM, the ocean becomes substantially fresher in the Atlantic basin due to a freshening of northern North Atlantic and associated reduction in North Atlantic Deep Water formation, while the saltiest water mass is found in the Southern Ocean as a result of the increase in the formation of sea ice and drier climate around Antarctica. The LGM thermohaline properties simulated by the coupled model are in reasonable agreement with paleoclimate proxy evidence.
URI
http://repository.kopri.re.kr/handle/201206/7570
Conference Name
한국 해양연구원 극지연구소
Conference Place
한국 해양연구원 극지연구소
Conference Date
2005.05.17~
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