The biennial Scientific Conferences of the Integrated Carbon Observation System (ICOS) bring together leading scientists and decision-makers from around the world to discuss greenhouse gases and biogeochemical cycles.

The ICOS 2026 Scientific Conference will be held in Lund, Sweden, and online from September 15 to 17, 2026.

This year, there will be 31 sessions reflecting the three domains of ICOS (Atmosphere, Ecosystem, and Ocean) and incorporating broader topics such as climate services, scientific communication, and cooperation between research infrastructures.

• Session 1: How big is the open ocean carbon sink?
• Session 2: Marine Carbon Dioxide Removal – What have we learned and what are the emerging challenges for MRV confidence
• Session 3: Blue carbon and seaweed: reforestation and cultivation
• Session 4: Carbon cycling in the land ocean aquatic continuum
• Session 5: Advancing marine CO₂ observations through next-generation sensors, integration and platform innovation
• Session 6: Carbon cycle in the Mediterranean region: from the local to the regional scale
• Session 7: CO2 and CH4 cycle dynamics in Africa: observations, processes, and climate implications
• Session 8: Methane in situ measurements in Latin America and the Caribbean
• Session 9: Carbon processes in high latitude/high altitude ecosystems under climate change
• Session 10: Cross-scale responses of greenhouse gas variability to climate extremes
• Session 11: Climate feedbacks from ecosystem management and natural disturbances
• Session 12: Comparing long-term eddy covariance measurements in terrestrial ecosystems with carbon stock variations: lessons and future challenges
• Session 13: Advancing approaches for quantifying greenhouse gas fluxes in terrestrial ecosystems
• Session 14: Greenhouse gas fluxes in agroecosystems: processes, measurements and management implications
• Session 15: Peatlands in the global climate system: fluxes, feedbacks, and human pressures
• Session 16: Using sun-induced chlorophyll fluorescence to understand or scale EC fluxes
• Session 17: Urban greenhouse gas emissions and sinks: from advanced monitoring to source identification and impact
• Session 18: Quantifying anthropogenic greenhouse gas emissions from continental to regional scales
• Session 19: Understanding feedbacks between greenhouse gas exchange processes and climate variability using in situ observations, remote sensing, and machine learning
• Session 20: Unmanned autonomous vehicles and proximal sensing in greenhouse gas research and monitoring
• Session 21: Emerging approaches for greenhouse gas flux measurements
• Session 22: Remote sensing and flux observations to link disturbance, ecosystem states, and carbon-water fluxes
• Session 23: Remote sensing and vertical profiling of atmospheric greenhouse gases for climate action
• Session 24: Exchange of reactive gases and aerosols between the land surface and the atmosphere in natural and managed ecosystems
• Session 25: Exploring interconnected air quality and climate challenges in urban scale with harmonized research infrastructure data and tools
• Session 26: Designing the ideal global greenhouse gas monitoring network
• Session 27: The potential of Research Infrastructures for MRV development
• Session 28: Combining data and models to support emissions estimation and policy at local to regional scales
• Session 29: Using GHG measurement data to support national greenhouse gas inventories
• Session 30: Assessing impact in RIs
• Session 31: Flux measurements for immediate societal benefits
• Session 32: Unlocking climate research solutions through co-design
• Session 33: Science and arts: How to communicate science?
• Session 34: Manufacturers’ session

To review each session in detail, please visit the following link.

If you have any questions about the ICOS Scientific Conference or are interested in sponsorship and vendor exhibition opportunities at the ICOS 2026 Scientific Conference, please contact conference@icos-ri.eu.