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Seven organizations from seven countries
were involved in the Photosynthesis Study.
Click the logos to visit their websites.

About the FLEX Photosynthesis Study

This study targetted the linkage between solar-induced chlorophyll fluorescence and photosynthesis in terrestrial vegetation.  A dedicated photosynthesis model based on state-of-the-art existing modules was developed and implemented.  We also developed and tested a prototype algorithm to derive photosynthesis from FLEX tandem mission measurements.

The aim was to be able to map terrestrial photosynthesis from space by measuring vegetation fluorescence emission.  Scientific objectives of the study were:

  • To assess the quality of fluorescence-derived photosynthesis data against classical optically-based methods (the fraction of absorbed photosynthetically active radiation times Light Use Efficiency).
  • To address in more detail temporal and spatial scaling issues (from towers to satellite footprints).
  • To identify and characterise the effects of different types of stress on fluorescence and photosynthesis (especially drought and freezing air temperatures).
  • To indicate potential applications and usage of the novel fluorescence observations.

The potential of fluorescence to serve as an early indicator of stress – that is, before damage is irreversible – is a major aspect to be considered in the exploitation of FLEX measurements, since reflectance changes often are detectable only in dramatic or advanced cases of physiological strain.

The Photosynthesis Study was part of the package of parallel study activities needed for assessment of the FLEX candidate mission.

For further information, click here.

To read or download the Final Project Report, click here.

To see a list of publications from the Study, click here.

To visit the follow-up FLEX Bridge Study website, click here.

Read more about FLEX and Chlorophyll Fluoresecence by clicking HERE and HERE.

Sentinel-3A was successfully launched on 16 February 2016.  Watch the launch event webcast HERE.


The ESA Earth Explorer 8 User Consultation Meeting (UCM) was held 15-16 September 2015 in Krakow, Poland.
Click HERE to watch webcasts of the presentations & discussions.  (For meeting agenda details, go HERE.)
The FLEX Report for Mission Selection can be downloaded HERE.

ESA's Living Planet Symposium 2016 will be held 9-13 May 2016 in Prague, Czech Republic.
Click HERE for details.



Upcoming Study Project Meetings

[ The PS Study Meeting Roster is now complete. ]

QR Code - PS URL
www.flex-photosyn.ca