EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Update on IAGOS greenhouse gas observations from commercial airliners

Christoph Gerbig1, Harald Franke2, Ralf Stosius2, Florian Obersteiner3, Torsten Gehrlein3, and Andreas Zahn3
Christoph Gerbig et al.
  • 1Max Planck Institute for Biogeochemistry, Biogeochemical systems, Jena, Germany (
  • 2Karlsruhe Institute of Technology (KIT), Institute for Meteorology and Climate Research, Karlsruhe, Germany
  • 3enviscope GmbH, Frankfurt am Main, Germany

Within the framework of the research infrastructure IAGOS (In-service Aircraft for a Global Observing System), a cavity ring-down spectroscopy (CRDS)-based measurement system for the autonomous measurement of the greenhouse gases (GHGs) CO2 and CH2, as well as CO and water vapour is deployed on a Lufthansa Airbus A330 since September 2018. This IAGOS-CORE system is equipped with a two-standard in-flight calibration system, allowing for trace gas measurements to be fully traceable to WMO calibration scales. Various lessons have been learned during the first deployment periods related to the autonomous operation of the system over periods of several months, enabling the future extension of the GHG measurements to aircraft from further airlines. Apart from the presentation of the observations, the presentation will discuss the data quality and uncertainty estimation.

A further CRDS system for autonomous measurement CO2 and CH4 is integrated within the instrumented IAGOS-CARIBIC container deployed on board an Airbus A340 on a bi-monthly schedule since July 2018. By now this system has provided data from more than 30 flights. Data will be presented, and the potential of the observations for research applications will be introduced. Also the availability of IAGOS GHG data to the research community will be discussed.

How to cite: Gerbig, C., Franke, H., Stosius, R., Obersteiner, F., Gehrlein, T., and Zahn, A.: Update on IAGOS greenhouse gas observations from commercial airliners, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-16371,, 2020


Display file

Comments on the display

AC: Author Comment | CC: Community Comment | Report abuse

displays version 1 – uploaded on 20 Apr 2020
  • CC1: Comment on EGU2020-16371, Rob Koopman, 04 May 2020

    Dear Christoph, from your presentation I see that the payload is not only measuring GHG. In particular IAGOS-CARIBIC seems to include cloud and aerosol in-situ observations. Can you provide me with details on the cloud&aerosol instrumentation and provide the contact of the PIs of these instruments. It would be interesting to see if they are interested to collaborate on EarthCARE Validation. Regards, Rob


    • AC1: Reply to CC1, Christoph Gerbig, 04 May 2020

      Dear Rob,

      You can find details on, including PI information. Check under the tab for "IAGOS-CORE".



      • CC2: Reply to AC1, Rob Koopman, 04 May 2020

        Thanks Christoph,

        Will do. I have also seen Florian's response.



    • AC2: Reply to CC1, Florian Obersteiner, 04 May 2020

      Dear Rob, if you are interested in IAGOS-CARIBIC data, it would be best if you contact Torsten or me via email (, so we can discuss the details!

      cheers, Florian

      • CC3: Reply to AC2, Rob Koopman, 04 May 2020

        Thanks Florian,

        Will email right away,