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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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We compare two different data assimilation systems for estimating sources and sinks of CO_2 from concentration measurements. The systems are CarbonTracker and TM5-4DVar, which have both been used in a number of scientific studies. We analyze the differences between both models as well as the sensitivity of the estimated sources and sinks to the observation coverage. The results provide a lower limit for the uncertainty of surface carbon fluxes with the current measurement network.
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Articles | Volume 15, issue 17
Atmos. Chem. Phys., 15, 9747–9763, 2015
https://doi.org/10.5194/acp-15-9747-2015
Atmos. Chem. Phys., 15, 9747–9763, 2015
https://doi.org/10.5194/acp-15-9747-2015

Research article 01 Sep 2015

Research article | 01 Sep 2015

Comparing the CarbonTracker and TM5-4DVar data assimilation systems for CO2 surface flux inversions

A. Babenhauserheide et al.

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Short summary
We compare two different data assimilation systems for estimating sources and sinks of CO_2 from concentration measurements. The systems are CarbonTracker and TM5-4DVar, which have both been used in a number of scientific studies. We analyze the differences between both models as well as the sensitivity of the estimated sources and sinks to the observation coverage. The results provide a lower limit for the uncertainty of surface carbon fluxes with the current measurement network.
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