GCRI · Oceans and Coasts
Released maps
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.
01Contents
Released maps in five parts.
02What is shown
Released, referenced and rights-cleared.
- Time and space reference for every view.
- Sources and licence.
- Uncertainty and known limits.
- Version and date of release.
03Geography
Ocean state worldwide.
Marine heat, sea temperature and chlorophyll across the world, from NASA GIBS. Each layer carries its own date.
The interactive map needs JavaScript; the layer list and sources are below.
Layers 3
Ocean state, for this page
About this layer
- Evidence
- Observed
- Source
- GHRSST MUR25 (NASA JPL PO.DAAC)
- Provider
- NASA JPL PO.DAAC
- Licence
- NASA open data
- Vintage
- daily; Satellite analysis
- Newest at build
- 2026-10-12
- Resolution
- about 2 km grid
- Uncertainty
- Satellite analysis of how far sea temperature departs from its usual value for the date shown; a marine heat indicator, not a coral bleaching alert.
- Reached through
- gibs.earthdata.nasa.gov, only after you allow the live map
About this layer
- Evidence
- Observed
- Source
- GHRSST MUR (NASA JPL PO.DAAC)
- Provider
- NASA JPL PO.DAAC
- Licence
- NASA open data
- Vintage
- daily; Satellite analysis
- Newest at build
- 2026-10-12
- Resolution
- about 1 km grid
- Uncertainty
- Gap-filled satellite analysis of sea surface temperature for the date shown; not a reef or species condition report.
- Reached through
- gibs.earthdata.nasa.gov, only after you allow the live map
About this layer
- Evidence
- Observed (clouds and sun glint leave gaps)
- Source
- MODIS Aqua ocean colour (NASA OB.DAAC)
- Provider
- NASA OB.DAAC
- Licence
- NASA open data
- Vintage
- daily; Satellite retrieval; clouds and sun glint leave gaps
- Newest at build
- 2026-10-13
- Resolution
- about 1 km grid
- Uncertainty
- Satellite estimate of chlorophyll-a near the sea surface on the day shown, an indicator of plankton and ocean productivity; not a measure of fish stocks or harmful blooms.
- Reached through
- gibs.earthdata.nasa.gov, only after you allow the live map
About this layer
- Evidence
- Observed
- Source
- VIIRS NOAA-20 corrected reflectance (NASA LANCE)
- Provider
- NASA LANCE
- Licence
- NASA open data
- Vintage
- daily; Satellite image
- Newest at build
- 2026-10-14
- Resolution
- about 250 m grid
- Uncertainty
- Satellite image. Satellite or model raster as the provider publishes it. Clouds, swath gaps and retrieval error leave gaps and noise; values are indicators, not measurements at a place.
- Reached through
- gibs.earthdata.nasa.gov, only after you allow the live map
About this layer
- Evidence
- Modelled (latest year GIBS publishes)
- Source
- MODIS Terra and Aqua land cover (MCD12Q1) (NASA LP DAAC)
- Provider
- NASA LP DAAC
- Licence
- NASA open data
- Vintage
- yearly; Satellite classification; latest year GIBS publishes
- Newest at build
- 2024-01-01
- Resolution
- about 500 m grid
- Uncertainty
- Satellite land cover classes for the year shown, including croplands; a classification with known errors, not a farm register.
- Reached through
- gibs.earthdata.nasa.gov, only after you allow the live map
About this layer
- Evidence
- Observed (clouds leave gaps)
- Source
- MODIS Terra EVI (NASA LANCE)
- Provider
- NASA LANCE
- Licence
- NASA open data
- Vintage
- daily; Satellite index; clouds leave gaps
- Newest at build
- 2026-10-13
- Resolution
- about 250 m grid
- Uncertainty
- Satellite vegetation index for the 8 days to the date shown, a habitat condition indicator; not a measure of species or biodiversity.
- Reached through
- gibs.earthdata.nasa.gov, only after you allow the live map
Keyboard, with the map focused
Hold Ctrl or ⌘ and scroll to zoom
Latest available
NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · 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.
Ocean state, framed on the world.Satellite and model products as NASA publishes them, each with its own date. They are indicators, not assessments of any place.
Data: NASA GIBS · ASTER GDEM · Blue Marble · © OpenStreetMap contributors · Natural Earth · NASA EONET · NASA PACE OCI · NASA JPL OPERA DIST-ALERTSources and licences
- We acknowledge the use of imagery provided by services from NASA’s Global Imagery Browse Services (GIBS), part of NASA’s Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). NASA open data
- We acknowledge the use of imagery provided by services from NASA’s Global Imagery Browse Services (GIBS), part of NASA’s Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). NASA open data
- GHRSST Level 4 MUR analyses, NASA Jet Propulsion Laboratory; distributed by the NASA Physical Oceanography DAAC (PO.DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). NASA open data
- MODIS Aqua ocean colour, NASA Ocean Biology Processing Group; distributed by the NASA Ocean Biology DAAC (OB.DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). NASA open data
- VIIRS near-real-time products (flood, land surface temperature, snow cover, corrected reflectance), NASA LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). NASA open data
- MODIS land products (vegetation indices, gross primary production, land cover), NASA LP DAAC and LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). NASA open data
- ASTER GDEM is a product of METI and NASA (ASTER Global Digital Elevation Model V003, NASA LP DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). Cite as: NASA/METI/AIST/Japan Spacesystems and U.S./Japan ASTER Science Team (2019). ASTER Global Digital Elevation Model V003. doi:10.5067/ASTER/ASTGTM.003. NASA open data
- Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com. Public domain
- © OpenStreetMap contributors (ODbL), via NASA GIBS (coastlines, boundaries, roads and place names). Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). ODbL
- Blue Marble, NASA Earth Observatory; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). NASA open data
- Context on the globe and flat map: coastlines, boundaries, roads and place names from NASA GIBS reference layers (OpenStreetMap data, ODbL, © OpenStreetMap contributors); Blue Marble imagery as an optional base; 3D terrain and the elevation read-out from the ASTER GDEM elevation colour index (5 m to 200 m classes, exaggerated for legibility). Boundaries are drawn as published and imply no position on any territory.
- Live events: NASA Earth Observatory Natural Event Tracker (EONET); events are indicative and keep their original source links.
- Live: NASA EONET Events are indicative, not authority warnings.
- Observed (EO): NASA PACE OCI. We acknowledge the use of imagery provided by services from NASA’s Global Imagery Browse Services (GIBS), part of NASA’s Earth Science Data and Information System (ESDIS).
- Observed (EO): NASA JPL OPERA DIST-ALERT (contains modified Copernicus Sentinel data 2026). We acknowledge the use of imagery provided by services from NASA’s Global Imagery Browse Services (GIBS), part of NASA’s Earth Science Data and Information System (ESDIS).
- NASA GIBS: We acknowledge the use of imagery provided by services from NASA’s Global Imagery Browse Services (GIBS), part of NASA’s Earth Science Data and Information System (ESDIS).
- Weather data by Open-Meteo.com (https://open-meteo.com/), licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
- Optional layers (10 sources in the layer list: live, forecast, observed and context) print their provider credit on the map and here when switched on; forecasts are model output and derived indices are estimates.
Layers and dates
- Sea surface temperature anomaly: GHRSST MUR25, NASA JPL PO.DAAC · 12 Oct 2026
- Sea surface temperature: GHRSST MUR, NASA JPL PO.DAAC · 12 Oct 2026
- Ocean chlorophyll-a concentration: MODIS Aqua ocean colour, NASA OB.DAAC · 12 Oct 2026
- True colour: VIIRS NOAA-20 corrected reflectance, NASA LANCE · 13 Oct 2026
- Land cover type (IGBP), yearly: MODIS Terra and Aqua land cover (MCD12Q1), NASA LP DAAC · 2024
- Enhanced vegetation index, rolling 8 days: MODIS Terra EVI, NASA LANCE · 13 Oct 2026
04Indicators
What a released map in this field would carry.
| 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 | Published statistics | 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 | Published statistics | 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 | Published statistics | 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 | Published statistics | 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 | Published statistics | Blue economy |
| Coastal tourism arrivals | visitor arrivals | annual | Published statistics | 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 | Published statistics | 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 |
05Process
How the process runs.
Process explorer · Process
Released maps: Layers to published map
7 steps·4 stages·1 gate
Process
Released maps: Layers to published map
Layers enter with their rights, are aligned, analysed and checked for uncertainty, then released after public-safe review; a map is a governed spatial claim.
01 Data
- 01Source layers with their rightsDataset · NXS-GRX (canonical data, provenance and risk)Spatial views of The Global Risks Index (NXS-GRX) products sit under the boundary licence gate. Rights classification sets how a layer may be used.
02 Harmonise
- 02Coordinate reference and boundary versionRecord · NXS-EOP (earth observation and digital twins)The area of interest preserves its coordinate reference system, polygon validity and observation support. Boundary versions are kept.
- 03Harmonise units, variables and timeStepUnit metadata, conversion records and transformation logs are required. Alignment is an evidence event, not hidden preprocessing.
03 Analyse and check
- 04Analyse with a recorded processing recipeModel · GIS teamA processing recipe records parameters, calibration, inputs and output lineage. The analysis methods are named in each product’s own record.
- 05Spatial uncertainty checkGateSpatial uncertainty is recorded and affects downstream use. A high-uncertainty polygon may suit internal review, not public-safe release.
04 Publish
- 06Spatial metadata bundleRecordThe bundle records boundary type, jurisdiction, geometry version, projection, resolution, source, time window, uncertainty and access class.
- 07Public-safe release of the mapDecisionThe output record names the redactions, uncertainty and public-safe reviewer. A map is a governed spatial claim, never merely a picture.
Spatio-temporal intelligence · Data protocols: semantic, jurisdictional and temporal intelligence · NXS-EOPDesigned programme process, not a record of operation. No cycle has run and every programme is at service level R0. A gate is a programme decision, never a public-authority approval, certification or deployment authorisation. The pages cited are design doctrine.
06Reading the maps
Cautions that apply to ocean and coastal maps.
- Global elevation models have errors larger than projected sea-level rise in some places.
- Exposure maps depend on the elevation model chosen.
- Maritime boundaries shown follow cited sources; disputed areas are marked.
- Fisheries maps show reported catch, not actual catch.
07Status
Releases appear as they are reviewed.
Analysis runs in Foundry; reviewed releases are listed here.
08Sources
Where this page’s references lead.
The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.
09Questions
Questions and answers.
Can I request a map or model?
Write to the contact form with what you need and why.
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Oceans and Coasts
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