| Co-Investigator(Kenkyū-buntansha) |
吉森 正和 東京大学, 大気海洋研究所, 准教授 (20466874)
草原 和弥 国立研究開発法人海洋研究開発機構, 地球環境部門(環境変動予測研究センター), 研究員 (20707020)
齋藤 冬樹 国立研究開発法人海洋研究開発機構, 地球環境部門(環境変動予測研究センター), 研究員 (60396942)
岡 顕 東京大学, 大気海洋研究所, 准教授 (70396943)
Greve Ralf 北海道大学, 低温科学研究所, 教授 (90374644)
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| Budget Amount *help |
¥126,750,000 (Direct Cost: ¥97,500,000、Indirect Cost: ¥29,250,000)
Fiscal Year 2021: ¥29,510,000 (Direct Cost: ¥22,700,000、Indirect Cost: ¥6,810,000)
Fiscal Year 2020: ¥29,510,000 (Direct Cost: ¥22,700,000、Indirect Cost: ¥6,810,000)
Fiscal Year 2019: ¥29,510,000 (Direct Cost: ¥22,700,000、Indirect Cost: ¥6,810,000)
Fiscal Year 2018: ¥26,390,000 (Direct Cost: ¥20,300,000、Indirect Cost: ¥6,090,000)
Fiscal Year 2017: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
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| Outline of Final Research Achievements |
We carried out numerical experiments of climate, ocean and ice sheets in the past, present and future by using models called MIROC, COCO, IcIES, and SICOPOLIS. We show that OGCM simulation with sedimentary process considering enhanced Southern Ocean salinity stratification and iron fertilization from glaciogenic dust during glacial periods improves the modeled glacial deep water and simulate the drawdown of glacial atmospheric pCO2. The simulations of mass loss of the Antarctic ice sheet using SICOPOLIS show that, by the year 3000AD, the unabated warming pathway produces a mass loss of the West Antarctic ice sheet and a sea-level rise equivalent of 1.5 to 5.4 metres, even keeping the climate forcing unchanged after 2100AD. We also demonstrate that changes in atmosphere parameters associated with the fraction of cloud thermodynamic phase in a climate model reduce the biases in the warm SST over the modern Southern Ocean, and then reproduce the Southern and global Ocean at the LGM.
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