Evaluation of flood damage reduction throughout Japan from adaptation measures taken under a range of emissions mitigation scenarios
| Autor: | Hayata Yanagihara, Tsuyoshi Tada, Hiroyuki Takizawa, Takeshi Yamashita, Yoshiya Touge, Tao Yamamoto, So Kazama |
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| Rok vydání: | 2021 |
| Předmět: |
Atmospheric Science
Global and Planetary Change 010504 meteorology & atmospheric sciences Land use Flood myth 0208 environmental biotechnology Global warming Climate change 02 engineering and technology 01 natural sciences 020801 environmental engineering Unit (housing) Flood control Range (statistics) Environmental science Precipitation Water resource management 0105 earth and related environmental sciences |
| Zdroj: | Climatic Change. 165 |
| ISSN: | 1573-1480 0165-0009 |
| DOI: | 10.1007/s10584-021-03081-5 |
| Popis: | This study aimed to evaluate the impact of climate change on flood damage and the effects of mitigation measures and combinations of multiple adaptation measures in reducing flood damage. The inundation depth was calculated using a two-dimensional unsteady flow model. The flood damage cost was estimated from the unit evaluation value set for each land use and prefectures and the calculated inundation depth distribution. To estimate the flood damage in the near future and the late twenty-first century, five global climate models were used. These models provided daily precipitation, and the change of the extreme precipitation was calculated. In addition to the assessment of the impacts of climate change, certain adaptation measures (land-use control, piloti building, and improvement of flood control level) were discussed, and their effects on flood damage cost reduction were evaluated. In the case of the representative concentration pathway (RCP) 8.5 scenario, the damage cost in the late twenty-first century will increase to 57% of that in the late twentieth century. However, if mitigation measures were to be undertaken according to RCP2.6 standards, the increase of the flood damage cost will stop, and the increase of the flood damage cost will be 28% of that in the late twentieth century. By implementing adaptation measures in combination rather than individually, it is possible to keep the damage cost in the future period even below that in the late twentieth century. By implementing both mitigation and adaptation measures, it is possible to reduce the flood damage cost in the late twenty-first century to 69% of that in the late twentieth century. |
| Databáze: | OpenAIRE |
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