Cambridge Prisms: Coastal Futures (Jan 2024)

Perspective on Regional Sea-level Change and Coastal Impacts

  • Kathleen L. McInnes,
  • Robert J. Nicholls,
  • Roderik van de Wal,
  • David Behar,
  • Ivan D. Haigh,
  • Benjamin D. Hamlington,
  • Jochen Hinkel,
  • Daniella Hirschfeld,
  • Benjamin P. Horton,
  • Angelique Melet,
  • Matthew D. Palmer,
  • Alexander A. Robel,
  • Detlef Stammer,
  • Abby Sullivan

DOI
https://doi.org/10.1017/cft.2024.15
Journal volume & issue
Vol. 2

Abstract

Read online

We synthesize sea-level science developments, priorities and practitioner needs at the end of the 10-year World Climate Research Program Grand Challenge ’Regional Sea-Level Change and Coastal Impacts’. Sea-level science and associated climate services have progressed but are unevenly distributed. There remains deep uncertainty concerning high-end and long-term sea-level projections due to indeterminate emissions, the ice sheet response and other climate tipping points. These are priorities for sea-level science. At the same time practitioners need climate services that provide localized information including median and curated high-end sea-level projections for long-term planning, together with information to address near-term pressures, including extreme sea level-related hazards and land subsidence, which can greatly exceed current rates of climate-induced sea-level rise in some populous coastal settlements. To maximise the impact of scientific knowledge, ongoing co-production between science and practitioner communities is essential. Here we report on recent progress and ways forward for the next decade.