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Global commons governance

Global commons governance is a chapter of Diplomacy Nexus: a specialist sub-community with its own group, editor and research agenda. Global commons stewardship is already cross-border diplomacy.

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01Contents

Global commons governance in four parts.

In this dossier4 parts
  1. 01The chapterWhat Global commons governance covers
  2. 02The commonsRegimes for spaces beyond national jurisdiction
  3. 03JoinTake part
  4. 04SourcesWhere this page's references lead
02The chapter

What Global commons governance covers.

  1. 01

    Members

    Specialists who work on the chapter's questions.

  2. 02

    Group

    A moderated group, opened when its hosting and terms are in place.

  3. 03

    Editor

    A named editor responsible for the chapter's pages.

  4. 04

    Research agenda

    Questions the chapter works on, starting from its cornerstone topic.

03Geography

People and hazards in the Tigris and Euphrates Basin.

Population density, night lights and flood water over the Tigris and Euphrates Basin, from NASA GIBS. Each layer carries its own date.

The interactive map needs JavaScript; the layer list and sources are below.

Layers 3

People and hazards, for this page

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.

People and hazards, framed on the Tigris and Euphrates Basin.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 · U.S. Geological SurveySources 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
  • Center for International Earth Science Information Network (CIESIN), Columbia University. 2018. Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11. NASA Socioeconomic Data and Applications Center (SEDAC). Licensed under CC BY 4.0. Colours redrawn from the published colour map; values averaged into hexagonal cells where shown (modified). doi:10.7927/H49C6VHW. CC BY 4.0
  • VIIRS Black Marble night-time lights, NASA Goddard Space Flight Center; distributed by the NASA Level-1 and Atmosphere Archive and Distribution System (LAADS 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
  • NASA Fire Information for Resource Management System (FIRMS), VIIRS 375 m active fire product, NASA LANCE; vector tiles via NASA GIBS. 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
  • 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.
  • Context: © OpenStreetMap contributors (ODbL), via NASA GIBS. © OpenStreetMap contributors (ODbL), rendered by NASA GIBS.
  • Live: U.S. Geological Survey Events are indicative, not authority warnings.
  • 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).
  • Optional layers (5 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

  • Population density, 2020: Population: CIESIN, Columbia University, Gridded Population of the World v4.11 (2018), NASA SEDAC, CC BY 4.0 · static
  • Night-time lights, daily: VIIRS Black Marble (VNP46A2), NASA LAADS DAAC · 12 Oct 2026
  • Flood water, 3-day composite: VIIRS Global Flood Product, NASA LANCE · 14 Oct 2026
  • Active fires and thermal anomalies: VIIRS NOAA-20 375 m (FIRMS), NASA LANCE FIRMS · 13 Oct 2026
  • Sea surface temperature anomaly: GHRSST MUR25, NASA JPL PO.DAAC · 12 Oct 2026
  • True colour: VIIRS NOAA-20 corrected reflectance, NASA LANCE · 13 Oct 2026

04The commons

Regimes for spaces beyond national jurisdiction.

CommonsRegimeCurrent question
High seasUNCLOS, BBNJ AgreementRules of procedure and first area-based management proposals
Deep seabedInternational Seabed AuthorityExploitation regulations, still under negotiation
AntarcticaAntarctic Treaty SystemTourism and fisheries management
Outer spaceOuter Space Treaty, COPUOS guidelinesDebris and traffic coordination
AtmosphereMontreal Protocol, Paris AgreementImplementation
05Process

How the process runs.

Process

Global commons governance: Model risk lifecycle

US bank supervisors revised model risk guidance on April 17, 2026, with Fed SR 26-2 superseding SR 11-7; it sets no enforceable standards.

  1. 01 Inventory and development

    1. 02Model inventory and materialityDataset · Party delegation BAn effective inventory shows model risk for single models and in aggregate. Model purpose with model exposure sets materiality.
    2. 04Development and testingStep · Party delegation BDevelopment starts from a clear purpose aligned with business use and policy. Testing checks whether the model performs as intended.
    3. 05DocumentationRecord · Party delegation BAdequate documentation supports continuity of operations, the tracking of recommendations, responses and exceptions, and remediation.

  2. 02 Validation and challenge

    1. 03Effective challengeComponent · Party delegation BObjective experts critically evaluate model risk and drive change across the lifecycle. They need expertise, independence and standing.
    2. 06Conceptual soundnessStep · Party delegation BValidation of conceptual soundness assesses and documents model design, construction and developmental testing.
    3. 07Outcomes analysisStep · Party delegation BOutcomes analysis compares model outputs with real-world outcomes. It can include back-testing or outlier analysis.

  3. 03 Governance, use and monitoring

    1. 01Policies, roles and responsibilitiesComponent · Party delegation BPolicies set expectations and a framework for assessing model risk. Roles are clear, with attention to conflicts of interest.
    2. 08Decision to use, with limits where neededDecision · Party delegation BValidation generally comes before first use. Urgent earlier use calls for attention to limits, informed stakeholders and controls.
    3. 09Ongoing monitoringModel · Party delegation BMonitoring checks whether the model performs as expected as products, exposures, clients, data or markets change.
    4. 10Adjust, recalibrate or redevelopStep · Party delegation BWhen performance deviates meaningfully from expectations, the organisation considers adjustment, recalibration or redevelopment.

Outline of an external standard or method, from its public sources. It describes what the framework says, not a record of any run. It does not show that Nexus or any partner performs, certifies or approves a step. A gate is a step of the method, never a Nexus approval. The guidance is expected to be most relevant to banking organisations with over $30 billion in total assets.

06Join

Take part.

Write to the contact form. The acknowledgement gives a reference and names the next step.

07Sources

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.

08Questions

Questions and answers.

Can a chapter become its own platform?
Yes, by meeting the ten-point graduation rule.
Diplomacy Nexus

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