The Global Observation System for Mercury (GOS4M), a GEO Flagship, provides monitoring data and modelling tools to support the implementation of the Minamata Convention (MC) on Mercury.

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GOS4M aims to support the MC Secretariat, the UN Environment and all nations in the follow up of decisions related to the Effectiveness Evaluation and Global Monitoring framework. GOS4M aims to work closely with actions in providing assistance and promote capacity building for filling existing geographical gaps in the global monitoring. It is now exploring a formal agreement between the GEO and Minamata Convention Secretariats to formalize GOS4M’s support for the future activities of the Convention.

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Other GEO activities to support public health include GEOHealth, which has developed geospatial surveillance and response system for vector borne disease in the Americas. AfriGEO has collaborated to produce cholera warnings using Earth observation data. GEO communities are actively monitoring wildfires and air pollution for public health.