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Second Biomass Retrieval Inter-comparison eXercise

The event is organised by ESA together with NASA and it is taking place from 29 to 30 April 2021, 16:00-18:00 [CEST] | 11:00-13:00 [Washington] |08:00-10:00 [Los Angeles].

BRIX-2 Objectives:

  • Provide an objective, standardized comparison and assessment of biomass retrieval algorithms developed for the BIOMASS, NISAR and GEDI missions, and fusion of these mission datasets;
  • Establish a forum to involve scientists in the development of retrievals that have so far not been part of the Biomass community;
  • The adoption of vetted validation standards and methods to compare biomass estimates to reference datasets (e.g. field plots or airborne lidar biomass maps);
  • Collect inputs from the biomass user and scientific community on data formats and characteristics towards the generation of Analysis Ready Data.

These objectives will be achieved by making available standardised test cases (based on airborne campaign and spaceborne data) on the ESA-NASA Mission Analysis and Algorithm Platform, allowing the scientific community to develop and apply retrieval algorithms based on this test case, and finally compare and evaluate the performance of submitted results.


You can register to the BRIX-2 until Monday 26th April by sending an email to indicating you name, surname, affiliation, and describing in a few sentences your motivation to participate to this exercise and a short description of your biomass model (if any, references are welcome).

Contact Info

BRIX-2 Organizing Committee 

Clement Albinet


Laura Duncanson

University of Maryland, USA

Marco Lavalle


Stefanie Lumnitz

ESA/DLR, Italy