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projecting changes in the drivers of compound flooding in Europe using CMIP6 models
Hermans, T.H.J.; Busecke, J.J.M.; Wahlund, T.M.; Malagon Santos, V.; Tadesse, M.G.; Jane, R.A.; Van de Wal, R.S.E. (2024). projecting changes in the drivers of compound flooding in Europe using CMIP6 models. Earth's Future 12(5): e2023EF004188. https://dx.doi.org/10.1029/2023ef004188
In: Earth's Future. Wiley: New York. e-ISSN 2328-4277, meer
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| Author keywords |
projections; compound flooding; joint probability; statistical storm surge model; precipitation; CMIP6 ensemble |
| Auteurs | | Top |
- Hermans, T.H.J., meer
- Busecke, J.J.M.
- Wahlund, T.M.
- Malagon Santos, V., meer
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- Tadesse, M.G.
- Jane, R.A.
- Van de Wal, R.S.E.
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| Abstract |
When different flooding drivers co-occur, they can cause compound floods. Despite the potential impact of compound flooding, few studies have projected how the joint probability of flooding drivers may change. Furthermore, existing projections may not be very robust, as they are based on only 5 to 6 climate model simulations. Here, we use a large ensemble of simulations from the Coupled Model Intercomparison Project 6 (CMIP6) to project changes in the joint probability of extreme storm surges and precipitation at European tide gauges under a medium and high emissions scenario, enabled by data-proximate cloud computing and statistical storm surge modeling. We find that the joint probability will increase in the northwest and decrease in most of the southwest of Europe. Averaged over Europe, the absolute magnitude of these changes is 36%–49% by 2080, depending on the scenario. The large-scale changes in the joint probability of extreme storm surges and precipitation are similar to those in the joint probability of extreme wind speeds and precipitation, but locally, differences can exceed the changes themselves. Due to internal climate variability and inter-model differences, projections based on simulations of only 5 to 6 randomly chosen CMIP6 models have a probability of higher than 10% to differ qualitatively from projections based on all CMIP6 simulations in multiple regions, especially under the medium emissions scenario and earlier in the twenty-first century. Therefore, our results provide a more robust and less uncertain representation of changes in the potential for compound flooding in Europe than previous projections. © 2024 The Authors. Earth's Future published by Wiley Periodicals LLC on behalf of American Geophysical Union. |
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