Integrating new sea‐level scenarios into coastal risk and adaptation assessments: An ongoing process

Nicholls, Robert J., Hanson, Susan E., Lowe, Jason A., Slangen, Aimée B. A., Wahl, Thomas, Hinkel, Jochen and Long, Antony J. (2021) Integrating new sea‐level scenarios into coastal risk and adaptation assessments: An ongoing process. Wiley Interdisciplinary Reviews: Climate Change, 12 (3). ISSN 1757-7780

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Abstract

The release of new and updated sea‐level rise (SLR) information, such as from the Intergovernmental Panel on Climate Change (IPCC) Assessment Reports, needs to be better anticipated in coastal risk and adaptation assessments. This requires risk and adaptation assessments to be regularly reviewed and updated as needed, reflecting the new information but retaining useful information from earlier assessments. In this paper, updated guidance on the types of SLR information available is presented, including for sea‐level extremes. An intercomparison of the evolution of the headline projected ranges across all the IPCC reports show an increase from the fourth and fifth assessments to the most recent “Special Report on the Ocean and Cryosphere in a Changing Climate” assessment. IPCC reports have begun to highlight the importance of potential high‐end sea‐level response, mainly reflecting uncertainties in the Greenland/Antarctic ice sheet components, and how this might be considered in scenarios. The methods that are developed here are practical and consider coastal risk assessment, adaptation planning, and long‐term decision‐making to be an ongoing process and ensure that despite the large uncertainties, pragmatic adaptation decisions can be made. It is concluded that new sea‐level information should not be seen as an automatic reason for abandoning existing assessments, but as an opportunity to review (i) the assessment's robustness in the light of new science and (ii) the utility of proactive adaptation and planning strategies, especially over the more uncertain longer term.

Item Type: Article
Uncontrolled Keywords: adaptation,coastal planning,sea-level rise,sea-level scenarios,global and planetary change,geography, planning and development,atmospheric science ,/dk/atira/pure/subjectarea/asjc/2300/2306
Faculty \ School: Faculty of Science > Tyndall Centre for Climatic Change
Faculty of Science > School of Environmental Sciences
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 26 Mar 2021 00:49
Last Modified: 12 Jun 2021 12:08
URI: https://ueaeprints.uea.ac.uk/id/eprint/79566
DOI: 10.1002/wcc.706

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