Measurements of atmospheric CO2 columns using ground-based FTIR spectra

The investigation of CO2 sources and sinks within the carbon cycle is important in order to understand global climate change. In this work high resolution ground-based FTIR measurements were used to retrieve total column amounts of CO2. Required measures for the reduction of error sources and the improvement of total column accuracies are presented. In addition, a novel analysis procedure to retrieve vertical CO2 profiles from TCCON measurements is shown and validated with in situ measurements.