The Global Centre for Risk and Innovation (GCRI)
Maps of Oceans and Coasts are published here once their data rights are cleared and they have been reviewed. Each shows its time and space reference, its sources and its uncertainty.
Fig.A programme from scoping to the owner's decision. Design, not a record.
Oceans and Coasts released maps are reviewed map views of oceans and coasts, published once their data rights are cleared, each with its coordinate reference, date, sources and uncertainty. Layers draw on sources such as Permanent Service for Mean Sea Level (PSMSL). A map shows released, rights-cleared evidence, not a live feed or an official warning.
Marine heat, sea surface temperature, chlorophyll and sea ice from satellite analyses, framed on World; each layer is a dated NASA product.
The interactive map needs JavaScript; the layer list and sources are below.
Layers 1
Ocean state
Keyboard, with the map focused
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Latest available
NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Natural Earth
Loading the latest NASA imagery.
Drag to move. Ctrl or ⌘ and scroll, pinch or the buttons to zoom; hover for the values under the pointer; reset returns to the region.
Marine heat, sea surface temperature, chlorophyll and sea ice from satellite analyses, framed on World.Satellite and model products as NASA publishes them, each with its own date; indicators, not assessments of any place; claim ceiling INTEGRATED.
Layers and dates
| Indicator | Unit | Cadence | Evidence label | Topic |
|---|---|---|---|---|
| Relative sea-level trend | millimetres per year | annual | Observed | Sea level and coastal flood |
| Global mean sea level | millimetres relative to a reference | monthly | Observed | Sea level and coastal flood |
| Extreme sea level at a return period | metres above a datum | per analysis | Estimated | Sea level and coastal flood |
| High-tide flood days | days per year | annual | Observed | Sea level and coastal flood |
| Vertical land motion | millimetres per year | per analysis | Observed | Sea level and coastal flood |
| Projected sea-level rise | metres by a stated year and scenario | per assessment | Modelled | Sea level and coastal flood |
| Population in the low-elevation coastal zone | people | per assessment | Estimated | Sea level and coastal flood |
| Degree heating weeks | degree Celsius weeks | daily | Observed | Marine ecosystems |
| Live hard coral cover | percent of reef area | per survey | Observed | Marine ecosystems |
| Mangrove extent | square kilometres | annual | Observed | Marine ecosystems |
| Surface ocean pH | pH units | per cruise or mooring | Observed | Marine ecosystems |
| Dissolved oxygen | micromoles per kilogram | per profile | Observed | Marine ecosystems |
| Marine protected area coverage | percent of national waters | annual | Official | Marine ecosystems |
| Species occurrence records | count by taxon and area | continuous | Reported | Marine ecosystems |
| Fish stocks within biologically sustainable levels | percent of assessed stocks | per assessment | Official | Fisheries and livelihoods |
| Capture fisheries production | tonnes | annual | Reported | Fisheries and livelihoods |
| Aquaculture production | tonnes | annual | Reported | Fisheries and livelihoods |
| Fishing effort | fishing hours by area | daily | Estimated | Fisheries and livelihoods |
| People employed in fisheries and aquaculture | count | annual | Reported | Fisheries and livelihoods |
| Implementation of instruments against IUU fishing | score | per reporting cycle | Official | Fisheries and livelihoods |
| Quay elevation above extreme sea level | metres | per assessment | Estimated | Ports and maritime infrastructure |
| Operational downtime from weather | hours per year | annual | Observed | Ports and maritime infrastructure |
| Coastal infrastructure in flood hazard zones | count and value | per assessment | Estimated | Ports and maritime infrastructure |
| Storm damage to port facilities | events with recorded damage | annual | Reported | Ports and maritime infrastructure |
| Wave height at harbour entrance | metres | hourly | Observed | Ports and maritime infrastructure |
| Ports with climate adaptation plans | count | per assessment | Declared | Ports and maritime infrastructure |
| Operational Argo floats | count | monthly | Observed | Ocean observation |
| Essential ocean variables with sustained observation | count by variable readiness level | per assessment | Official | Ocean observation |
| Tide gauges reporting in near real time | count | annual | Observed | Ocean observation |
| Coastal waters observed by in situ systems | percent of national coastline with monitoring | per assessment | Reported | Ocean observation |
| Data latency | hours from measurement to availability | per platform | Observed | Ocean observation |
| Ocean science capacity | researchers and research vessels per country | per assessment | Reported | Ocean observation |
| Ocean economy gross value added | currency units by sector | annual | Estimated | Blue economy |
| Marine spatial plans adopted | count of national or regional plans | per assessment | Reported | Blue economy |
| Offshore wind capacity | megawatts | annual | Official | Blue economy |
| Coastal tourism arrivals | visitor arrivals | annual | Official | Blue economy |
| Sustainable fisheries as a share of GDP | percent | annual | Estimated | Blue economy |
| Ocean area under spatial management | percent of national waters | per assessment | Reported | Blue economy |
| Land below a stated elevation | percent of land area | per assessment | Estimated | Island resilience |
| Freshwater lens thickness | metres | per survey | Observed | Island resilience |
| Disaster losses relative to economy | percent of GDP | per event | Estimated | Island resilience |
| Food import dependence | percent of food supply imported | annual | Estimated | Island resilience |
| Public debt | percent of GDP | annual | Official | Island resilience |
| International connectivity | count of shipping and air services | annual | Reported | Island resilience |
| Index of coastal eutrophication | chlorophyll and nutrient indicators | per assessment | Estimated | Marine pollution |
| Floating plastic debris density | items per square kilometre | per survey | Estimated | Marine pollution |
| Beach litter | items per hundred metres of beach | per survey | Observed | Marine pollution |
| Oil spills from tankers | count and tonnes | annual | Reported | Marine pollution |
| Hypoxic area | square kilometres | annual | Observed | Marine pollution |
| Wastewater safely treated | percent of wastewater flows | per assessment | Estimated | Marine pollution |
Analysis runs in Nexus Foundry; reviewed releases are listed here.
Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.
| Term | Definition |
|---|---|
| Coordinate reference system | The definition that ties coordinates to locations on Earth, catalogued with EPSG codes. |
| Modifiable areal unit problem | The change in statistical results that comes from how areas are drawn and aggregated. |
| Zonal statistics | Statistics of raster values summarised within boundaries such as districts. |
| Public-safe release | A recorded decision on the detail at which a layer may be published without exposing sensitive sites or people. |
The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.
The current service level is R0: information and enquiries. An enquiry receives a reference and names the next step; applications, payments, compute allocations and registrations open only when their team, terms and review capacity exist.