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TERATEC 2025 Forum
The European meeting for Experts in High Power Digital
Simulation . HPC/HPDA . Artificial Intelligence . Quantum Computing

Wednesday May 21
Workshop 01 - 4:15 pm to 6:15 pm

HPC and AI serving the Climate: Challenges and Opportunities
Chaired by Hatem Ltaief, Principal Research Scientist, KAUST and Florent Ventimiglia, Head of Computing, Software Engineering and Data Valorization Department, CNES

Massive data processing for the IASI-NG echosounder: an innovative processor for an innovative space instrument
By Béatrice Petrucci, project technical manager, CNES

The L1CPOP (L1C Product Operational Processor), the Level 1 data processing chain for the IASI-NG - IASI New Generation - mission, whose aim is to measure atmospheric profiles of temperature, humidity and various atmospheric components, is a concentrate of innovation.

The new generation of the IASI mission is aptly named, featuring a totally innovative instrument that has necessitated a complete rethink of virtually all the first-generation IASI algorithms in order to meet much more stringent mission performance requirements. Integration into the EUMETSAT ground segment represents a major technical challenge, as EUMETSAT has chosen an ambitious Big Data solution proposed by Thales Alenia Space to run all the processing chains for all the instruments on the EPS-SG mission.

This solution involved very tight constraints on the design, development and validation of L1CPOP. All data flows are managed exclusively in memory, and algorithms are activated by the availability of input data (data-driven) and parallelized over several dozen compute nodes. Optimizing these algorithms enables real-time production, since the L1C products generated are eagerly awaited by meteorological agencies, which assimilate them into their forecasting models. The presentation will briefly recall CNES's mission and cooperation with EUMETSAT, then focus on the architecture and operation of L1CPOP.

Biography: After studying aerospace engineering with a specialization in remote sensing in Rome, and a spell at CESBIO on the BIOMASS project, Beatrice Petrucci joined CNES in 2008 to work on the specification and development of the Sentinel-2 Ground Prototype Processor in cooperation with ESA-ESTEC and ESA ESRIN. Passionate about processing chains, she worked with CESBIO to develop the Venµs mission's atmospheric correction chain to make it multi-sensor, capable of processing Sentinel-2 and Landsat orthorectified products (and then some!). She then became technical manager of the L1C IASI-NG operational chains developed by CNES for EUMETSAT and, after radar and optical imaging, discovered atmospheric sounding and the constraints of real-time production.

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