An assessment of CMIP5 climate models for the ocean temperature and salinity

Title
An assessment of CMIP5 climate models for the ocean temperature and salinity
Author(s)
신호정; 장찬주; 김용선; Ken Caldeira
KIOST Author(s)
Jang, Chan Joo(장찬주)Kim, Yong Sun(김용선)
Publication Year
2017-04-17
Abstract
As a great reservoir of thermal energy, ocean plays a crucial role in determining climate sensitivity to an external forcing. A change in ocean heat storage can cause a change in global mean surface temperature, a major indicator of global warming. Although the CMIP5 (fifth phase of Coupled Model Intercomparison Project) climate models have been widely used to understand and project a climate change, an assessment for the ocean simulations has been limited to upper ocean including sea surface temperature and surface heat fluxes or to the changes in those variables. The purpose of this study is to make an assessment of the CMIP5 models on the ocean climatology with temperature and salinity. As a preliminary result, the median of 37 CMIP5 models, compared with a reanalysis data for the 30years of 1975 to 2004, showed a relatively large warm bias greater than 2 degrees in the Atlantic Ocean below 500 m and in the Indian Ocean above 500 m. These warm biases are well correlated with a higher salinity in those regions. Further analysis results will be presented and our results may provide information on the CMIP5 models systematic bias and simulation uncertainty.warming. Although the CMIP5 (fifth phase of Coupled Model Intercomparison Project) climate models have been widely used to understand and project a climate change, an assessment for the ocean simulations has been limited to upper ocean including sea surface temperature and surface heat fluxes or to the changes in those variables. The purpose of this study is to make an assessment of the CMIP5 models on the ocean climatology with temperature and salinity. As a preliminary result, the median of 37 CMIP5 models, compared with a reanalysis data for the 30years of 1975 to 2004, showed a relatively large warm bias greater than 2 degrees in the Atlantic Ocean below 500 m and in the Indian Ocean above 500 m. These warm biases are well correlated with a higher salinity in those regions. Further analysis results will be presented and our results may provide information on the CMIP5 models systematic bias and simulation uncertainty.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24155
Bibliographic Citation
10th WESTPAC international Scientific Conference, pp.164, 2017
Publisher
WESTPAC
Type
Conference
Language
English
Publisher
WESTPAC
Related Researcher
Research Interests

upper ocean dynamics,regional climate modeling,ocean climate change,해양상층역학,지역기후모델링,해양기후변화

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