Articles | Volume 7-osr10
https://doi.org/10.5194/sp-7-osr10-3-2026
https://doi.org/10.5194/sp-7-osr10-3-2026
30 Sep 2026
 | OSR10 | Chapter 1.2
 | 30 Sep 2026 | OSR10 | Chapter 1.2

Ocean change in Small Island Developing States

Flora Gues, Karina von Schuckmann, Mahé Butel, Samantha Hallam, Alvaro de Pascual, Axel Alonso Valle, Aurélien Liné, and Lorena Moreira Mendez

Data sets

2020 Environmental Performance Index SEDAC https://doi.org/10.7927/F54C-0R44

List of SIDS UN OHRLLS https://www.un.org/ohrlls/content/list-sids

Maritime Boundaries Geodatabase: Maritime Boundaries and Exclusive Economic Zones (200NM), version 12 Flanders Marine Institute https://doi.org/10.14284/632

Species Richness and Rarity-Weighted Richness spatial data IUCN https://www.iucnredlist.org/resources/other-spatial-downloads

Global Ocean Mean Sea Level trend map from Observations Reprocessing E.U. Copernicus Marine Service https://doi.org/10.48670/moi-00238

Global Ocean in situ - Delayed Mode temperature and salinity CORA -objective analysis E.U. Copernicus Marine Service https://doi.org/10.48670/mds-00383

NOAA 0.25-degree Daily Optimum Interpolation Sea Surface Temperature (OISST), Version 2.1 Boyin Huang et al. https://doi.org/10.25921/RE9P-PT57

IAP global ocean heat content 1° gridded analysis product (IAPv4) Lijing Cheng et al. https://doi.org/10.12157/IOCAS.20240117.001

EN4 quality controlled subsurface ocean temperature and salinity profiles and objective analyses Simon A. Good et al. https://www.metoffice.gov.uk/hadobs/en4/index.html

NCEI ocean heat content, temperature anomalies, salinity anomalies, thermosteric sea level anomalies, halosteric sea level anomalies, and total steric sea level anomalies from 1955 to present calculated from in situ oceanographic subsurface profile data Sydney Levitus et al. https://doi.org/10.7289/V53F4MVP

Reef-forming Corals (spatial data) IUCN https://www.iucnredlist.org/resources/spatial-data-download

GDP (current US$) World Bank https://data.worldbank.org/indicator/NY.GDP.MKTP.CD?view=map

Global Peak Storm Surge Map Hal F. Needham and Barry D. Keim https://surge.climate.lsu.edu/data.html

Mapping Ocean Wealth - Mangrove Coastal Protection Benefit The Nature Conservancy https://maps.oceanwealth.org/#/data

International Best Track Archive for Climate Stewardship (IBTrACS) Project, Version 4.01 J. Gahtan et al. https://doi.org/10.25921/82ty-9e16

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Short summary
Small Island Developing States (SIDS) depend on the ocean for their societies, economies and livelihoods, addressed here with an ocean narrative using a suite of integrated ocean indicators. Their Exclusive Economic Zones govern 8 % of the global ocean and hold global biodiversity hotspots. SIDS are also among the regions most exposed to ocean and climate change, facing sea-level rise, ocean warming, tropical cyclone risks, and growing impacts on marine ecosystems and SIDS communities.
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