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PublishedMay 20, 2022

CoCO2 study on urban-scale emissions published

The Paris Agreement has established a transparency framework for anthropogenic carbon dioxide (CO2 ) emissions. Its core components are inventory-based national greenhouse gas emission reports, which can be complemented by independent estimates derived from atmospheric CO2 measurements combined with inverse modelling. The CO2 Monitoring mission (CO2M) is planned as a constellation of satellites measuring column-integrated atmospheric CO2 and NO2 as well as aerosol.  The mission will be a key component of the Copernicus monitoring and verification support capacity to be operated as part of the Copernicus Atmosphere Monitoring Service (CAMS).

Uncertainty reduction

In a recently published study, researchers from CoCO2  assessed the potential of a comprehensive data assimilation system using simulated CO2M observations of CO2 and NO2 to constrain fossil fuel CO2 emission estimates over a regional domain that includes the megacity of Berlin and various power plants.

The assessments show that the combination of CO2M with a suitable inversion system can provide useful estimates for urban scale emission reporting/verification. The uncertainty in fossil fuel emissions from the largest three power plants in the domain was reduced by 60 to 90% after assimilating the observations. Likewise, the uncertainty for the non-power plant emissions was reduced by up to 60% when aggregated over the city of Berlin (see Figure). Details of the study can be found in an article that was just published in Frontiers in Remote Sensing.