Why increased extreme precipitation under climate change negatively affects water security
<p>An increase in extreme precipitation is projected for many areas worldwide in the coming decades. To assess the impact of increased precipitation intensity on water security, we applied a regional-scale hydrological and soil erosion model, forced with regional climate model projections....
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-11-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | https://www.hydrol-earth-syst-sci.net/22/5935/2018/hess-22-5935-2018.pdf |
| _version_ | 1811233249125466112 |
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| author | J. P. C. Eekhout J. E. Hunink W. Terink J. de Vente |
| author_facet | J. P. C. Eekhout J. E. Hunink W. Terink J. de Vente |
| author_sort | J. P. C. Eekhout |
| collection | DOAJ |
| description | <p>An increase in extreme precipitation is projected for many areas
worldwide in the coming decades. To assess the impact of increased
precipitation intensity on water security, we applied a regional-scale
hydrological and soil erosion model, forced with regional climate model
projections. We specifically considered the impact of climate change on the
distribution of water between soil (green water) and surface water (blue
water) compartments. We show that an increase in precipitation intensity
leads to a redistribution of water within the catchment, where water storage
in soil decreases and reservoir inflow increases. This affects plant water
stress and the potential of rainfed versus irrigated agriculture, and
increases dependency on reservoir storage, which is potentially threatened by
increased soil erosion. This study demonstrates the crucial importance of
accounting for the fact that increased precipitation intensity leads to water
redistribution between green and blue water, increased soil erosion, and
reduced water security. Ultimately, this has implications for design of
climate change adaptation measures, which should aim to increase the water
holding capacity of the soil (green water) and to maintain the storage
capacity of reservoirs (blue water), benefiting rainfed and irrigated
agriculture.</p> |
| first_indexed | 2024-04-12T11:17:53Z |
| format | Article |
| id | doaj.art-5dd88225a5b34b9397ba5a24e03517ae |
| institution | Directory Open Access Journal |
| issn | 1027-5606 1607-7938 |
| language | English |
| last_indexed | 2024-04-12T11:17:53Z |
| publishDate | 2018-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Hydrology and Earth System Sciences |
| spelling | doaj.art-5dd88225a5b34b9397ba5a24e03517ae2022-12-22T03:35:27ZengCopernicus PublicationsHydrology and Earth System Sciences1027-56061607-79382018-11-01225935594610.5194/hess-22-5935-2018Why increased extreme precipitation under climate change negatively affects water securityJ. P. C. Eekhout0J. E. Hunink1W. Terink2J. de Vente3Soil and Water Conservation Research Group, CEBAS-CSIC, Spanish Research Council, Campus Universitario Espinardo, P.O. Box 164, 30100, Murcia, SpainFutureWater, Calle San Diego 174a, 30202, Cartagena, SpainFutureWater, Costerweg 1V, 6702 AA, Wageningen, the NetherlandsSoil and Water Conservation Research Group, CEBAS-CSIC, Spanish Research Council, Campus Universitario Espinardo, P.O. Box 164, 30100, Murcia, Spain<p>An increase in extreme precipitation is projected for many areas worldwide in the coming decades. To assess the impact of increased precipitation intensity on water security, we applied a regional-scale hydrological and soil erosion model, forced with regional climate model projections. We specifically considered the impact of climate change on the distribution of water between soil (green water) and surface water (blue water) compartments. We show that an increase in precipitation intensity leads to a redistribution of water within the catchment, where water storage in soil decreases and reservoir inflow increases. This affects plant water stress and the potential of rainfed versus irrigated agriculture, and increases dependency on reservoir storage, which is potentially threatened by increased soil erosion. This study demonstrates the crucial importance of accounting for the fact that increased precipitation intensity leads to water redistribution between green and blue water, increased soil erosion, and reduced water security. Ultimately, this has implications for design of climate change adaptation measures, which should aim to increase the water holding capacity of the soil (green water) and to maintain the storage capacity of reservoirs (blue water), benefiting rainfed and irrigated agriculture.</p>https://www.hydrol-earth-syst-sci.net/22/5935/2018/hess-22-5935-2018.pdf |
| spellingShingle | J. P. C. Eekhout J. E. Hunink W. Terink J. de Vente Why increased extreme precipitation under climate change negatively affects water security Hydrology and Earth System Sciences |
| title | Why increased extreme precipitation under climate change negatively affects water security |
| title_full | Why increased extreme precipitation under climate change negatively affects water security |
| title_fullStr | Why increased extreme precipitation under climate change negatively affects water security |
| title_full_unstemmed | Why increased extreme precipitation under climate change negatively affects water security |
| title_short | Why increased extreme precipitation under climate change negatively affects water security |
| title_sort | why increased extreme precipitation under climate change negatively affects water security |
| url | https://www.hydrol-earth-syst-sci.net/22/5935/2018/hess-22-5935-2018.pdf |
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