The FLuorescence EXplorer (FLEX) is the eighth 'Earth Explorer' mission, scheduled for launch in 2026. The FLEX mission uses the measurement of sun-induced fluorescence (SIF) to provide the current photosynthesis of our vegetation with a high temporal and spatial resolution globally.

The FLEX project office is managed by Forschungszentrum Jülich, in cooperation with the German Aerospace Center (DLR).

Our tasks are:

  • to inform German scientists and companies about the possibilities of using the FLEX satellite data,
  • to develop scientific and commercial usage concepts,
  • and to provide a contact point for European and international synergistic activities.


We are pursuing the goal of building a German user community that can optimally use and apply FLEX data for their research purposes. We also want to make the potential of the FLEX satellite mission accessible to a broader public.

To implement these goals,

  • we continuously evaluate German and European funding opportunities for users,
  • advise interested parties on the application,
  • discuss concepts for new data products,
  • create a data usage concept,
  • create a gap analysis of the FLEX mission requirement from the point of view of the German user community,
  • and inform the public about the status of the FLEX mission.


Our work packages

  • Elaboration of technological and scientific questions and fields of application that are particularly relevant for a German user community;
  • Identification of support measures to facilitate demands in the interest of German industry and users;
  • Communication of the German interests, goals and proposed support measures in the Mission Advisory Group (MAG) of ESA;
  • Continuous information of our client and the German scientific and other user groups about the implementation and progress of the FLEX satellite mission;
  • Involving scientific groups that are not directly related to fluorescence research but want to use FLEX data products in other projects;
  • Informing the scientific user community about ESA calls and coordination/bundling of German applications;
  • Contacts to national funding bodies and exploring funding opportunities for FLEX user groups;
  • Conducting FLEX user workshops and FLEX user seminars, as well as providing the associated material.


  • Analysis and structuring of the interests and competencies of German FLEX data users;
  • Creation of a concept for using FLEX data in the field of climate and climate modeling and identifying measures to support the use of FLEX data;
  • Inclusion of national user requirements in the definition of data products;
  • Participation in the definition of (higher value) data products;
  • Conceptualisation of measurement campaigns and Cal/Val work.


  • Development of a gap analysis, in which existing gaps between data availability and user expectations are shown, specifically for a German FLEX user community;
  • Identifying solutions to close the identified gaps.


  • Establishment of the FLEX project office as a visible contact point for press and public for all relevant questions regarding the FLEX satellite mission;
  • Expanding the acceptance, knowledge and use of the FLEX satellite mission in science and the general public.



Organisational structure of FLEX-project office
FLEX-project office
Logo of the Federal Ministry for Economic Affairs and Climate Action

on the basis of a decision of the German Bundestag

funding ID: 50EE2106