Adaptation portfolio – a multi-measure framework for future floods and droughts
Abstract Adaptation is critically important for coping with climate change. However, quantitative studies on which adaptation measures should be taken to maintain the present water risk level in the context of climate change have been explored little, particularly at large basin scales. Here, we dev...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | npj Natural Hazards |
| Online Access: | https://doi.org/10.1038/s44304-024-00048-1 |
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| author | Saritha Padiyedath Gopalan Naota Hanasaki Adisorn Champathong Taikan Oki |
| author_facet | Saritha Padiyedath Gopalan Naota Hanasaki Adisorn Champathong Taikan Oki |
| author_sort | Saritha Padiyedath Gopalan |
| collection | DOAJ |
| description | Abstract Adaptation is critically important for coping with climate change. However, quantitative studies on which adaptation measures should be taken to maintain the present water risk level in the context of climate change have been explored little, particularly at large basin scales. Here, we devised three adaptation portfolios composed of combinations of measures to alleviate floods and drought with explicit basin-wide modelling in the Chao Phraya River basin, Thailand. Two portfolios mitigated future water scarcity to the present level but failed to eliminate extreme floods. The remaining portfolio with basin-wide reforestation substantially reduced the number of future flooding days but enhanced the number of drought months to 3–6 months a year, resulting from increased evapotranspiration by 7–11%. Overall, future flood adaptation remains challenging even in highly regulated rivers. We also observed that adaptation effects differ substantially by sub-basins. It highlights the necessity of spatio-temporal detailed impact modelling, including multiple adaptation measures. |
| format | Article |
| id | doaj-art-891e258fcaf24377bf86cfb17337267b |
| institution | Kabale University |
| issn | 2948-2100 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Natural Hazards |
| spelling | doaj-art-891e258fcaf24377bf86cfb17337267b2025-01-05T12:09:07ZengNature Portfolionpj Natural Hazards2948-21002024-12-011111310.1038/s44304-024-00048-1Adaptation portfolio – a multi-measure framework for future floods and droughtsSaritha Padiyedath Gopalan0Naota Hanasaki1Adisorn Champathong2Taikan Oki3Graduate School of Engineering, The University of TokyoGraduate School of Engineering, The University of TokyoOffice of Water Management and Hydrology, Royal Irrigation DepartmentGraduate School of Engineering, The University of TokyoAbstract Adaptation is critically important for coping with climate change. However, quantitative studies on which adaptation measures should be taken to maintain the present water risk level in the context of climate change have been explored little, particularly at large basin scales. Here, we devised three adaptation portfolios composed of combinations of measures to alleviate floods and drought with explicit basin-wide modelling in the Chao Phraya River basin, Thailand. Two portfolios mitigated future water scarcity to the present level but failed to eliminate extreme floods. The remaining portfolio with basin-wide reforestation substantially reduced the number of future flooding days but enhanced the number of drought months to 3–6 months a year, resulting from increased evapotranspiration by 7–11%. Overall, future flood adaptation remains challenging even in highly regulated rivers. We also observed that adaptation effects differ substantially by sub-basins. It highlights the necessity of spatio-temporal detailed impact modelling, including multiple adaptation measures.https://doi.org/10.1038/s44304-024-00048-1 |
| spellingShingle | Saritha Padiyedath Gopalan Naota Hanasaki Adisorn Champathong Taikan Oki Adaptation portfolio – a multi-measure framework for future floods and droughts npj Natural Hazards |
| title | Adaptation portfolio – a multi-measure framework for future floods and droughts |
| title_full | Adaptation portfolio – a multi-measure framework for future floods and droughts |
| title_fullStr | Adaptation portfolio – a multi-measure framework for future floods and droughts |
| title_full_unstemmed | Adaptation portfolio – a multi-measure framework for future floods and droughts |
| title_short | Adaptation portfolio – a multi-measure framework for future floods and droughts |
| title_sort | adaptation portfolio a multi measure framework for future floods and droughts |
| url | https://doi.org/10.1038/s44304-024-00048-1 |
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