WMO Approves Global Tracker for Greenhouse Gas Emissions

• The World Meteorological Congress has made a groundbreaking decision to approve a new greenhouse gas (GHG) monitoring initiative, according to the World Meteorological Organization (WMO).
• This initiative aims to support urgent action in reducing heat-trapping gases that contribute to rising global temperatures.
• The newly established Global Greenhouse Gas Watch will address critical information gaps, integrating various observing systems, modeling capabilities, and data assimilation under one comprehensive framework. The unanimous support from WMO’s 193 members highlights the growing importance of greenhouse gas monitoring and the need to strengthen the scientific foundation for climate change mitigation efforts.
• The Importance of the Global Greenhouse Gas Watch
• Filling information gaps and providing an integrated framework
• Unifying surface-based and space-based observations, modeling, and data assimilation
• Overcoming limitations in international exchange of greenhouse gas observations and modeling products.

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Components of the Global Greenhouse Gas Watch

Comprehensive Observations

• Surface-based and satellite-based monitoring of CO2, CH4, and N2O
• Monitoring of concentrations, total and partial column amounts, vertical profiles, and fluxes
• Exchange of data internationally to facilitate rapid information sharing

Prior Estimation of GHG Emissions

• Utilizing activity data and process-based models to estimate emissions
• Providing crucial insights for mitigation planning

Global Earth System Models

• Developing high-resolution models representing GHG cycles
• Enhancing understanding of the carbon cycle and its implications

Data Assimilation Systems

• Combining observations with model calculations for higher accuracy
• Generating valuable products to support decision-making