Articles | Volume 28, issue 12
https://doi.org/10.5194/hess-28-2635-2024
https://doi.org/10.5194/hess-28-2635-2024
Research article
 | 
20 Jun 2024
Research article |  | 20 Jun 2024

Widespread flooding dynamics under climate change: characterising floods using grid-based hydrological modelling and regional climate projections

Adam Griffin, Alison L. Kay, Paul Sayers, Victoria Bell, Elizabeth Stewart, and Sam Carr

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Cited articles

Barker, L., Hannaford, J., Muchan, K., Turner, S., and Parry, S.: The winter 2015/2016 floods in the UK – a hydrological appraisal, Weather, 71, 324–333, https://doi.org/10.1002/wea.2822, 2016. 
Bell, V. A., Kay, A. L., Jones, R. G., Moore, R. J., and Reynard, N. S.: Use of soil data in a grid-based hydrological model to estimate spatial variation in changing flood risk across the UK, J. Hydrol., 377, 335–350, https://doi.org/10.1016/j.jhydrol.2009.08.031, 2009. 
Bell, V. A., Kay, A. L., Cole, S. J., Jones, R. G., Moore, R. J., and Reynard, N. S.: How might climate change affect river flows across the Thames basin? An area-wide analysis using the UKCP09 regional climate model ensemble, J. Hydrol., 442, 89–104, https://doi.org/10.1016/j.jhydrol.2012.04.001, 2012. 
Berghuijs, W. R., Harrigan, S., Molnar, P., Slater, L. J., and Kirchner, J. W.: The Relative Importance of Different Flood-Generating Mechanisms Across Europe, Water Resour. Res., 55, 4582–4593, https://doi.org/10.1029/2019WR024841, 2019. 
Bevacqua, E., Shepherd, T. G., Watson, P. A. G., Sparrow, S., Wallom, D., and Mitchell, D.: Larger spatial footprint of wintertime total precipitation extremes in a warmer climate, Geophys. Res. Lett., 48, e2020GL091990, https://doi.org/10.1029/2020GL091990, 2021. 
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Short summary
Widespread flooding is a major problem in the UK and is greatly affected by climate change and land-use change. To look at how widespread flooding changes in the future, climate model data (UKCP18) were used with a hydrological model (Grid-to-Grid) across the UK, and 14 400 events were identified between two time slices: 1980–2010 and 2050–2080. There was a strong increase in the number of winter events in the future time slice and in the peak return periods.
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