2017 Fiscal Year Final Research Report
Reconstruction, detection and attribution of the past glacier mass changes over the last several centuries
| Project/Area Number |
15K06228
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Hydraulic engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 地球温暖化 / 氷河 / 最適指紋法 |
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| Outline of Final Research Achievements |
We collect observed and constructed mass balance changes of glaciers at global scale and apply an optimal fingerprinting technique to observed and reconstructed mass losses as well as multi-model general circulation model (GCM) simulations of mountain glacier mass to detect and attribute past glacier mass changes. The results indicate that human-induced increases in greenhouse gases have contributed to the decreased area-weighted average masses of analyzed glaciers at global scale. The effect was larger than the mass increase caused by natural forcing, although the contributions of natural and anthropogenic forcing to decreases in mass varied at the local scale. We also showed that the detection of anthropogenic or natural influences could not be fully attributed when natural internal climate variability was taken into account.
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| Free Research Field |
水文学
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