Extreme sea levels and coastal flooding in Europe

Extreme sea levels have increased at many locations along European coastlines, due to increases in mean local sea levels. These ongoing increases will amplify the frequency of 1-in-100 years historical extreme events, by exposing most locations to critical conditions already with a sea level rise value above 10cm. In the absence of better coastal protection, the projected sea level rise would increase the frequency of extreme high coastal water levels by a factor of 10 in most European coastlines prior to 2050, with differences depending on the location and the future climate scenario.

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DPSIR Impact
Typology Descriptive indicator (Type A - What is happening to the environment and to humans?)
UN SDGs SDG13: Climate action
Topics Climate change adaptation, Water, Extreme weather, Seas and coasts
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A recent study projected that climate change will increase the risk of compound flooding along most European coastlines, with the largest increases being expected along the North Sea and Baltic Sea coasts .", "value": [ { "children": [ { "text": "The concurrence of high sea levels and heavy precipitation resulting in large run-off volumes may cause " }, { "children": [ { "text": "compound flooding" } ], "type": "strong" }, { "text": " in low-lying coastal areas, as was the case in the catastrophic floods in Venice in November 2019. Currently, the Mediterranean coasts are at the highest risk of compound flooding. A recent study projected that climate change will increase the risk of compound flooding along most European coastlines, with the largest increases being expected along the " }, { "children": [ { "text": "North Sea and Baltic Sea coasts" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Bevacqua, E., Maraun, D., Vousdoukas, M. 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}, "plaintext": "Published: date \u2012 25min read", "readOnly": true, "readOnlySettings": true, "required": true, "value": [ { "children": [ { "text": "" }, { "children": [ { "text": "Published: " }, { "children": [ { "text": "date" } ], "data": { "id": "effective", "widget": "datetime" }, "type": "mention" }, { "text": " \u2012 25min read" } ], "type": "sup" }, { "text": "" } ], "type": "p" } ] }, "1c31c956-5086-476a-8694-9936cfa6c240": { "@type": "description", "disableNewBlocks": true, "fixed": true, "instructions": { "content-type": "text/html", "data": "<p>The summary tells the reader about the indicator trend over the examined period and whether or not it helps to achieve the associated policy objective, which can be either quantitative or directional.</p><p>In the absence of a policy objective, it explains whether the trend is in the right or wrong direction in relation to the issue examined.</p><p>If there has been an important change over the most recent period of the time series, e.g. over the last year, this is indicated too.</p><p>Furthermore, if there is a quantitative target, it also indicates whether we are on track to meet it and if not what are the reasons preventing that, e.g. socio-economic drivers, implementation gap etc.</p>", "encoding": "utf8" }, "placeholder": "Summary", "readOnlySettings": true, "required": true, "value": [ { "type": "p", "children": [ { "text": "Extreme sea levels have increased at many locations along European coastlines, due to increases in mean local sea levels. These ongoing increases will amplify the frequency of 1-in-100 years historical extreme events, by exposing most locations to critical conditions already with a sea level rise value above 10cm. In the absence of better coastal protection, the projected sea level rise would increase the frequency of extreme high coastal water levels by a factor of 10 in most European coastlines prior to 2050, with differences depending on the location and the future climate scenario." } ] } ], "plaintext": "Extreme sea levels have increased at many locations along European coastlines, due to increases in mean local sea levels. These ongoing increases will amplify the frequency of 1-in-100 years historical extreme events, by exposing most locations to critical conditions already with a sea level rise value above 10cm. In the absence of better coastal protection, the projected sea level rise would increase the frequency of extreme high coastal water levels by a factor of 10 in most European coastlines prior to 2050, with differences depending on the location and the future climate scenario." }, "3cccc2bb-471a-44c7-b006-5595c4713ff2": { "@type": "layoutSettings", "disableNewBlocks": true, "fixed": true, "layout_size": "narrow_view", "readOnly": true, "readOnlySettings": true, "required": true }, "ddde07aa-4e48-4475-94bd-e1a517d26eab": { "copyrightIcon": "ri-copyright-line", "styles": {}, "variation": "default", "@type": "title", "disableNewBlocks": true, "fixed": true, "hideContentType": true, "hideCreationDate": true, "hideDownloadButton": true, "hideModificationDate": true, "placeholder": "Indicator title", "readOnlySettings": true, "required": true } }, "blocks_layout": { "items": [ "ddde07aa-4e48-4475-94bd-e1a517d26eab", "1c31c956-5086-476a-8694-9936cfa6c240", "3cccc2bb-471a-44c7-b006-5595c4713ff2" ] } }, "disableInnerButtons": true, "disableNewBlocks": true, "fixed": true, "fixedLayout": true, "ignoreSpaces": true, "instructions": { "content-type": "text/html", "data": "<p>The summary tells the reader about the indicator trend over the examined period and whether or not it helps to achieve the associated policy objective, which can be either quantitative or directional.</p><p>In the absence of a policy objective, it explains whether the trend is in the right or wrong direction in relation to the issue examined.</p><p>If there has been an important change over the most recent period of the time series, e.g. over the last year, this is indicated too.</p><p>Furthermore, if there is a quantitative target, it also indicates whether we are on track to meet it and if not what are the reasons preventing that, e.g. socio-economic drivers, implementation gap etc.</p>", "encoding": "utf8" }, "maxChars": "500", "readOnlySettings": true, "required": true, "styles": { "style_name": "environment-theme-bg" }, "title": "Content header" }, "da4b144a-4b8c-4e77-9522-aa7580ccaac3": { "@layout": "1bc4379d-cddb-4120-84ad-5ab025533b12", "@type": "group", "allowedBlocks": [ "slate" ], "as": "section", "block": "dbac6278-5f97-495c-a5cd-e9cbfd4f9044", "data": { "blocks": { "4edcf592-b13e-4f60-9a34-e7a67734e83d": { "@type": "slate", "plaintext": "The historically 1-in-100-year coastal floods are projected to increase by a factor of 10 before the year 2050 in many locations along the Mediterranean and Atlantic coasts, and along almost all remaining European coasts by the end of the century, under a low emissions scenario (CMIP6: Coupled Model Intercomparison Project Phase 6, SSP: Shared Socioeconomic Pathways). Under a high emissions scenario, 1-in-100-year coastal floods are expected to occur at least once a year along most European coasts before the year 2050 , with some exception due to the already available flood protection measures .", "value": [ { "children": [ { "text": "The historically 1-in-100-year " }, { "children": [ { "text": "coastal floods are projected" } ], "type": "strong" }, { "text": " to increase by a factor of 10 before the year 2050 in many locations along the Mediterranean and Atlantic coasts, and along almost all remaining European coasts by the end of the century, under a low emissions scenario (CMIP6: Coupled Model Intercomparison Project Phase 6, SSP: Shared Socioeconomic Pathways). Under a high emissions scenario, 1-in-100-year coastal floods are expected to occur at least once a year along most European coasts before the year 2050" }, { "children": [ { "text": "" } ], "data": { "extra": [ { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Vousdoukas, M. I., Mentaschi, L., Voukouvalas, E., Verlaan, M., Jevrejeva, S., Jackson, L. P. and Feyen, L., 2018, 'Global probabilistic projections of extreme sea levels show intensification of coastal flood hazard', <i>Nature Communications</i> 9(1), pp. 2360 (http://www.nature.com/articles/s41467-018-04692-w) accessed September 23, 2020.</div>\n</div>\n", "footnoteTitle": "Vousdoukas, Michalis I., 12/2018, Global probabilistic projections of extr, Nature Communications", "zoteroId": "ITFYHHG3" }, { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Oppenheimer, M., Glavovic, B., Hinkel, J., van de Wal, R., Magnan, A. K., Abd-Elgawad, A., Cai, R., Cifuentes-Jara, M., DeConto, R. M., Gosh, T., Hay, J., Isla, F., Marzeion, B., Meyssignac, B., Sebesvari, Z. and Sugyiama, T., 2019, 'Chapter 4: Sea level rise and implications for low lying islands, coasts and communities', in: P&#xF6;rtner, H.-O., Roberts, D. C., Masson-Delmotte, V., et al. (eds), <i>IPCC special report on the ocean and cryosphere in a changing climate</i>, Cambridge University Press, Cambridge, UK.</div>\n</div>\n", "footnoteTitle": "Oppenheimer, Michael, 2019, Chapter 4: Sea level rise and implicatio, Cambridge, UK", "zoteroId": "RMWFBD3E" } ], "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Vousdoukas, M. I., Mentaschi, L., Voukouvalas, E., Verlaan, M. and Feyen, L., 2017, 'Extreme sea levels on the rise along Europe&#x2019;s coasts', <i>Earth&#x2019;s Future</i> 5(3), pp. 304&#x2013;323 (https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2016EF000505) accessed November 10, 2023.</div>\n</div>\n", "footnoteTitle": "Vousdoukas, Michalis I., 03/2017, Extreme sea levels on the rise along Eur, Earth's Future", "uid": "cRA93", "zoteroId": "8SEC6MKB" }, "type": "zotero" }, { "text": ", with some exception due to the already available flood protection measures" }, { "children": [ { "text": "" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Hermans, T. H. J., Malag&#xF3;n-Santos, V., Katsman, C. A., Jane, R. A., Rasmussen, D. J., Haasnoot, M., Garner, G. G., Kopp, R. E., Oppenheimer, M. and Slangen, A. B. A., 2023, 'The timing of decreasing coastal flood protection due to sea-level rise', <i>Nature Climate Change</i> 13(4), pp. 359&#x2013;366 (https://www.nature.com/articles/s41558-023-01616-5) accessed November 17, 2023.</div>\n</div>\n", "footnoteTitle": "Hermans, Tim H. J., 04/2023, The timing of decreasing coastal flood p, Nature Climate Change", "uid": "Q_pNP", "zoteroId": "LCJCIRT2" }, "type": "zotero" }, { "text": "." } ], "styleName": "text-justify", "type": "p" } ] }, "7586f68b-6801-4b5e-b680-a73e101de916": { "@type": "slate", "plaintext": "Increasing coastal flooding risks are threatening the achievement of a climate-resilient Europe, as aimed for by the EU strategy on adaptation to climate change .", "value": [ { "children": [ { "text": "Increasing coastal flooding risks are threatening the achievement of a climate-resilient Europe, as aimed for by the EU strategy on adaptation to climate change" }, { "children": [ { "text": "" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">EC, 2013, <i>The EU strategy on adaptation to climate change</i>, European Commission.</div>\n</div>\n", "footnoteTitle": "EC, 2013, The EU strategy on adaptation to climate", "uid": "A3ChK", "zoteroId": "EL9MCHJ5" }, "type": "zotero" }, { "text": "." } ], "type": "p" } ] }, "b0279dde-1ceb-4137-a7f1-5ab7b46a782c": { "@type": "embed_content", "url": "../../../../resolveuid/8fb478de7093483a9e622129f472f061", "with_notes": false }, "deb7e84d-d2c8-4491-90fa-3dc65fe02143": { "@type": "slate", "fixed": true, "instructions": { "content-type": "text/html", "data": "<p><br/></p>", "encoding": "utf8" }, "plaintext": "", "readOnlySettings": true, "required": true, "value": [ { "children": [ { "text": "" } ], "type": "p" } ] }, "e6809945-267b-4edf-a953-b3994de2041d": { "@type": "slate", "plaintext": "Extreme sea levels can occur during storms and this can lead to coastal flooding in the absence of sufficient coastal protection . A 10cm rise in sea level typically increases the frequency of flooding to a given height by a factor of approximately 10. Extreme sea levels along coastlines result from a combination of factors , including increases in local mean sea levels and tidal levels, storm surge events, waves and local flood protection standards. Changes in mean local sea levels are the main driver of observed and projected changes in extreme sea levels along the coastline . The melting of glaciers and icesheets along with ocean thermal expansion being the most relevant processes impacting Europe\u2019s seas .", "value": [ { "children": [ { "text": "Extreme sea levels can occur during storms and this can lead to coastal flooding in the absence of sufficient " }, { "children": [ { "text": "coastal protection" } ], "type": "strong" }, { "text": "" }, { "children": [ { "text": "" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Almar, R., Ranasinghe, R., Bergsma, E. W. J., Diaz, H., Melet, A., Papa, F., Vousdoukas, M., Athanasiou, P., Dada, O., Almeida, L. P. and Kestenare, E., 2021, 'A global analysis of extreme coastal water levels with implications for potential coastal overtopping', <i>Nature Communications</i> 12(1), pp. 3775 (https://www.nature.com/articles/s41467-021-24008-9) accessed November 10, 2023.</div>\n</div>\n", "footnoteTitle": "Almar, Rafael, 2021-06-18, A global analysis of extreme coastal wat, Nature Communications", "uid": "xJmGA", "zoteroId": "WKSFX8AH" }, "type": "zotero" }, { "text": ". A 10cm rise in sea level typically increases the frequency of flooding to a given height by a factor of approximately 10. Extreme sea levels along coastlines result from a combination of " }, { "children": [ { "text": "factors" } ], "type": "strong" }, { "text": ", including increases in local mean sea levels and tidal levels, storm surge events, waves and local flood protection standards. Changes in mean local sea levels are the main driver of observed and projected changes in extreme sea levels along the coastline" }, { "children": [ { "text": "" } ], "data": { "extra": [ { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Marcos, M. and Woodworth, P. L., 2017, 'Spatiotemporal changes in extreme sea levels along the coasts of the North Atlantic and the Gulf of Mexico: extreme sea level changes', <i>Journal of Geophysical Research: Oceans</i> 122(9), pp. 7031&#x2013;7048 (http://doi.wiley.com/10.1002/2017JC013065) accessed September 23, 2020.</div>\n</div>\n", "footnoteTitle": "Marcos, Marta, 09/2017, Spatiotemporal changes in extreme sea le, Journal of Geophysical Research: Oceans", "zoteroId": "UN2U9MJG" }, { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Vousdoukas, M. I., Mentaschi, L., Voukouvalas, E., Verlaan, M. and Feyen, L., 2017, 'Extreme sea levels on the rise along Europe&#x2019;s coasts', <i>Earth&#x2019;s Future</i> 5(3), pp. 304&#x2013;323 (https://agupubs.onlinelibrary.wiley.com/doi/10.1002/2016EF000505) accessed November 10, 2023.</div>\n</div>\n", "footnoteTitle": "Vousdoukas, Michalis I., 03/2017, Extreme sea levels on the rise along Eur, Earth's Future", "zoteroId": "8SEC6MKB" }, { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Kirezci, E., Young, I. R., Ranasinghe, R., Muis, S., Nicholls, R. J., Lincke, D. and Hinkel, J., 2020, 'Projections of global-scale extreme sea levels and resulting episodic coastal flooding over the 21st Century', <i>Scientific Reports</i> 10(1, 11629) (http://www.nature.com/articles/s41598-020-67736-6) accessed September 23, 2020.</div>\n</div>\n", "footnoteTitle": "Kirezci, Ebru, 12/2020, Projections of global-scale extreme sea , Scientific Reports", "zoteroId": "83APAMN3" }, { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Hermans, T. H. J., Malag&#xF3;n-Santos, V., Katsman, C. A., Jane, R. A., Rasmussen, D. J., Haasnoot, M., Garner, G. G., Kopp, R. E., Oppenheimer, M. and Slangen, A. B. A., 2023, 'The timing of decreasing coastal flood protection due to sea-level rise', <i>Nature Climate Change</i> 13(4), pp. 359&#x2013;366 (https://www.nature.com/articles/s41558-023-01616-5) accessed November 17, 2023.</div>\n</div>\n", "footnoteTitle": "Hermans, Tim H. J., 04/2023, The timing of decreasing coastal flood p, Nature Climate Change", "zoteroId": "LCJCIRT2" } ], "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Weisse, R., Bellafiore, D., Men&#xE9;ndez, M., M&#xE9;ndez, F., Nicholls, R. J., Umgiesser, G. and Willems, P., 2014, 'Changing extreme sea levels along European coasts', <i>Coastal Engineering</i> 87, pp. 4&#x2013;14 (http://www.sciencedirect.com/science/article/pii/S0378383913001737) accessed November 17, 2015.</div>\n</div>\n", "footnoteTitle": "Weisse, Ralf, 2014, Changing extreme sea levels along Europe, Coastal Engineering", "uid": "kFTls", "zoteroId": "MC8VJEDW" }, "type": "zotero" }, { "text": "\ufeff. The " }, { "children": [ { "text": "melting" } ], "type": "strong" }, { "text": " of glaciers and icesheets along with ocean thermal expansion being the most relevant processes impacting Europe\u2019s seas" }, { "children": [ { "text": "" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Vousdoukas, M. I., Mentaschi, L., Voukouvalas, E., Verlaan, M., Jevrejeva, S., Jackson, L. P. and Feyen, L., 2018, 'Global probabilistic projections of extreme sea levels show intensification of coastal flood hazard', <i>Nature Communications</i> 9(1), pp. 2360 (http://www.nature.com/articles/s41467-018-04692-w) accessed September 23, 2020.</div>\n</div>\n", "footnoteTitle": "Vousdoukas, Michalis I., 12/2018, Global probabilistic projections of extr, Nature Communications", "uid": "gPLGZ", "zoteroId": "ITFYHHG3" }, "type": "zotero" }, { "text": "." } ], "styleName": "text-justify", "type": "p" } ] }, "40db314e-12d0-402a-a23a-f9b7a4a8bfa3": { "@type": "group", "className": "figure-metadata", "id": "figure-metadata-b0279dde-1ceb-4137-a7f1-5ab7b46a782c", "data": { "blocks": { "b30a99de-4917-4524-85e7-07fc804dfaa7": { "@type": "slate", "value": [ { "type": "h3-light", "children": [ { "text": "Figure 1. Requested sea level rise for an amplification factor of 10 and 100 times" } ] } ], "plaintext": "Figure 1. Requested sea level rise for an amplification factor of 10 and 100 times" } }, "blocks_layout": { "items": [ "b30a99de-4917-4524-85e7-07fc804dfaa7" ] } }, "styles": {} }, "43df8fab-b278-4b0e-a62c-ce6b8e0a881d": { "@type": "dividerBlock", "section": false, "short": true, "disableNewBlocks": true, "fixed": true, "hidden": true, "readOnly": true, "required": true, "styles": {}, "spacing": "m", "fitted": false } }, "blocks_layout": { "items": [ "40db314e-12d0-402a-a23a-f9b7a4a8bfa3", "b0279dde-1ceb-4137-a7f1-5ab7b46a782c", "43df8fab-b278-4b0e-a62c-ce6b8e0a881d", "7586f68b-6801-4b5e-b680-a73e101de916", "e6809945-267b-4edf-a953-b3994de2041d", "4edcf592-b13e-4f60-9a34-e7a67734e83d" ] } }, "disableInnerButtons": true, "disableNewBlocks": false, "fixed": true, "ignoreSpaces": true, "instructions": { "content-type": "text/html", "data": "<p><strong>Assessment text remains at</strong> <strong>the relevant</strong> <strong>aggregate level</strong> <strong>(i.e.</strong> <strong>global, EU, sectoral)</strong> <strong>and addresses the following: </strong></p><ol keys=\"dkvn8,e367c,f4lpb,9j981,7ai6k,3g3pd\" depth=\"0\"><li>Explains in one or two sentences on the environmental rationale of the indicator, i.e. why it matters to the environment that we see an increase/decrease in the value measured.</li><li>Explains in one or two sentences the associated policy objective, which can be either quantitative or directional. More information on the policy objective and related references will be included in the supporting information section. Where there is no policy objective associated with the indicator, i.e. where the indicator addresses an issue that is important for future policy formulation, this text should explain instead why this issue is important.</li><li>IF NECESSARY - Explains any mismatch between what the indicator tracks and what the policy objective/issue is.</li><li>Qualifies the historical trend (e.g. steady increase) and explains the key reasons (e.g. policies) behind it. If there is a quantitative target it explains if we are on track to meet it.</li><li>IF NECESSARY - Explains any recent changes to the trend and why.</li><li>IF NECESSARY - Describes what needs to happen to see adequate progress in future, for instance in order to remain on track to meet targets.</li></ol><p><strong>Please cite your work if</strong> <strong>necessary</strong> <strong>using the EEA citation style (i.e.</strong> <strong>EEA, 2020). A full reference list appears in the supporting information section.</strong></p>", "encoding": "utf8" }, "maxChars": "2000", "placeholder": "Aggregate level assessment e.g. progress at global, EU level..", "readOnlySettings": true, "required": true, "title": "Aggregate level assessment" }, "e9736b7c-4902-48aa-aecd-b706409a576d": { "@type": "dividerBlock", "disableNewBlocks": true, "fixed": true, "hidden": true, "readOnly": true, "required": true, "section": false, "spacing": "m", "styles": {} } }
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Supporting information
Methodology [ { "children": [ { "text": "Methodology for indicator calculation" } ], "type": "h4" }, { "children": [ { "text": "The frequency of coastal flooding historical extreme events are calculated using a probabilistic approach" }, { "children": [ { "text": "" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Hermans, T. H. J., Malag&#xF3;n-Santos, V., Katsman, C. A., Jane, R. A., Rasmussen, D. J., Haasnoot, M., Garner, G. G., Kopp, R. E., Oppenheimer, M. and Slangen, A. B. A., 2023, 'The timing of decreasing coastal flood protection due to sea-level rise', <i>Nature Climate Change</i> 13(4), pp. 359&#x2013;366 (https://www.nature.com/articles/s41558-023-01616-5) accessed November 17, 2023.</div>\n</div>\n", "footnoteTitle": "Hermans, Tim H. J., 04/2023, The timing of decreasing coastal flood p, Nature Climate Change", "uid": "zWyVL", "zoteroId": "LCJCIRT2" }, "type": "zotero" }, { "text": " from the high-frequency tide gauge observations distributed along European coast of the GESLA-3 dataset" }, { "children": [ { "text": "" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Haigh, I. D., Marcos, M., Talke, S. A., Woodworth, P. L., Hunter, J. R., Hague, B. S., Arns, A., Bradshaw, E. and Thompson, P., 2023, '<span style=\"font-variant:small-caps;\">GESLA</span> Version 3: A major update to the global higher&#x2010;frequency sea&#x2010;level dataset', <i>Geoscience Data Journal</i> 10(3), pp. 293&#x2013;314 (https://rmets.onlinelibrary.wiley.com/doi/10.1002/gdj3.174) accessed November 10, 2023.</div>\n</div>\n", "footnoteTitle": "Haigh, Ivan D., 07/2023, <span style=\"font-variant:small-caps;\">G, Geoscience Data Journal", "uid": "jyfZk", "zoteroId": "5RRP3H27" }, "type": "zotero" }, { "text": ", accounting for the estimated flood protection standards at different locations" }, { "children": [ { "text": " " } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Tiggeloven, T., de Moel, H., Winsemius, H. C., Eilander, D., Erkens, G., Gebremedhin, E., Diaz Loaiza, A., Kuzma, S., Luo, T., Iceland, C., Bouwman, A., van Huijstee, J., Ligtvoet, W. and Ward, P. J., 2020, 'Global-scale benefit&#x2013;cost analysis of coastal flood adaptation to different flood risk drivers using structural measures', <i>Natural Hazards and Earth System Sciences</i> 20(4), pp. 1025&#x2013;1044 (https://nhess.copernicus.org/articles/20/1025/2020/) accessed November 10, 2023.</div>\n</div>\n", "footnoteTitle": "Tiggeloven, Timothy, 2020-04-17, Global-scale benefit\u2013cost analysis of co, Natural Hazards and Earth System Sciences", "uid": "VUYfV", "zoteroId": "D5579ANK" }, "type": "zotero" }, { "text": ". Relative sea-level projections from IPCC AR6" }, { "children": [ { "text": " " } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">IPCC AR6 Sea Level Projections, (https://zenodo.org/records/6382554) accessed November 17, 2023.</div>\n</div>\n", "footnoteTitle": " IPCC AR6 Sea Level Projections", "uid": "iG6D2", "zoteroId": "TJ636HDQ" }, "type": "zotero" }, { "text": " (Garner al., 2021) up to 2150 for a range of Shared Socioeconomic Pathway (SSP) scenarios are used in combination with the estimated projections amplification factors (AFs) to determine the timing of changes in the frequency of extreme sea levels due to sea level rise. The amplification factor is the projected probability increase of a certain extreme sea level, which indicates the ratio between the future and historical probability of that extreme sea level" }, { "children": [ { "text": "" } ], "data": { "footnote": "<?xml version=\"1.0\"?>\n<div class=\"csl-bib-body\" style=\"line-height: 1.35; \">\n <div class=\"csl-entry\">Hermans, T. H. J., Malag&#xF3;n-Santos, V., Katsman, C. A., Jane, R. A., Rasmussen, D. J., Haasnoot, M., Garner, G. G., Kopp, R. E., Oppenheimer, M. and Slangen, A. B. A., 2023, 'The timing of decreasing coastal flood protection due to sea-level rise', <i>Nature Climate Change</i> 13(4), pp. 359&#x2013;366 (https://www.nature.com/articles/s41558-023-01616-5) accessed November 17, 2023.</div>\n</div>\n", "footnoteTitle": "Hermans, Tim H. J., 04/2023, The timing of decreasing coastal flood p, Nature Climate Change", "uid": "TRE18", "zoteroId": "LCJCIRT2" }, "type": "zotero" }, { "text": ". For example, an amplification factor of 10 by year 2050 indicates that a 1-in-100 years extreme event that has a 1% chance of occurring under present climate conditions will have a 10% chance of happening from year 2050 onward.\u00a0" } ], "styleName": "text-justify", "type": "p" }, { "children": [ { "text": "" } ], "type": "p" }, { "children": [ { "text": "Uncertainty in future projections of extreme sea levels for Europe remains high and is ultimately linked to the uncertainty around " }, { "children": [ { "text": "future changes in mid-latitude storminess" } ], "data": { "url": "https://www.ipcc.ch/report/ar6/wg1/chapter/chapter-9/" }, "type": "link" }, { "text": ". Scientific understanding is advancing quickly in this area, as climate model representations of northern hemisphere storm track behaviour are showing improvements associated with, for instance, greater ocean and atmosphere resolution. However, the most recent global climate models have typically not yet been downscaled to suitably fine scales and used in studies of future storm surges." }, { "children": [ { "text": "" } ], "type": "b" }, { "text": "" } ], "styleName": "text-justify", "type": "p" }, { "children": [ { "text": "" } ], "type": "p" }, { "children": [ { "text": "Methodology for gap filling" } ], "type": "h4" }, { "children": [ { "text": "Not applicable." } ], "type": "p" }, { "children": [ { "text": "" } ], "type": "p" }, { "children": [ { "text": "Methodology references" } ], "type": "h4" }, { "children": [ { "text": "No methodology references available." } ], "type": "p" } ]
Data sources and providers { "readOnly": true, "data": [ { "@id": "911ed81f-2ae9-498e-9927-8589e8577719", "title": "Projections of the Timing of Decreasing Coastal Flood Protection" } ] }
Definition [ { "children": [ { "text": "This indicator reports changes in the frequency of historically 1-in-100-year floods along the European coastline. Such floods are caused by extreme sea levels, particularly during storm surges." } ], "type": "p" } ]
Unit of measure [ { "children": [ { "text": "FIG1: Metres" } ], "type": "li" }, { "type": "li", "children": [ { "text": "FIG2: Years" } ] } ]
Policy / environmental relevance [ { "children": [ { "text": "Sea level rise can have significant impacts on settlements, infrastructure, people and natural systems. In Europe, the potential impacts of sea level rise include flooding, coastal erosion and the submergence of flat regions along continental coastlines and on islands. Low-lying coastlines with high population densities and small tidal ranges are most vulnerable to sea level rise and coastal flooding, particularly where adaptation is hindered by a lack of economic resources or other constraints. Currently, around 200 million people live along the coastal zone in Europe." } ], "styleName": "text-justify", "type": "p" }, { "children": [ { "text": "" } ], "type": "p" }, { "children": [ { "text": "Damage associated with sea level rise is mostly caused by extreme events, such as storm surges. Of most concern is the coincidence of a storm surge with high tidal levels, leading to extreme sea levels. In Europe, the most intense surge events typically occur during the winter months. Furthermore, the concurrence of high sea levels and heavy precipitation resulting in large run-off volumes may cause compound flooding in low-lying coastal areas." } ], "styleName": "text-justify", "type": "p" } ]
Frequency of dissemination 2
Accuracy and uncertainties [ { "children": [ { "text": "Methodology uncertainty" } ], "type": "h4" }, { "children": [ { "text": "Not applicable." } ], "type": "p" }, { "children": [ { "text": "" } ], "type": "p" }, { "children": [ { "text": "Data sets uncertainty" } ], "type": "h4" }, { "children": [ { "text": "No uncertainty has been specified." } ], "type": "p" }, { "children": [ { "text": "" } ], "type": "p" }, { "children": [ { "text": "Rationale uncertainty" } ], "type": "h4" }, { "children": [ { "text": "No uncertainty has been specified." } ], "type": "p" } ]
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Short name extreme-sea-levels-and-coastal-flooding
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