We are pleased to inform users that the updated version for Swarm Level 2-Cat2 Operational Processors (IBI, FAC, TEC) has been successfully deployed into operations today.

This milestone marks an important step in ensuring the continued reliability and scientific excellence of the Swarm mission’s data products, enhancing both performance and the overall quality of Swarm L2-Cat2 data.

The key improvements implemented in this version are:

• Updating the computation of dual Field Aligned Current (FAC_AC) during Alpha and Charlie spacecrafts manoeuvres (see details in the technical note)
• Fixing the sign issue introduced in FAC_AC data products in October 2021, with the orbital configuration variation and consequent switch in latitude between Alpha and Charlie
• Improving the computation of the core field contribution in FAC single, FAC dual and IBI products
• Improving the computation of FAC (single and dual) when data from Vector Field Magnetometer (VFM) are missing
• Handling of changes and improvement introduced in Level 1B products with baseline 07, which impacted all L2 processors (IBI, FAC, TEC), i.e. handling of Not A Number (NaN) data points, handling of new structure in EFI products
•  Fixing minor issues and bugs

The Swarm L2 -Cat2 data products starting from 3 September 2026 are now generated with the new processor version.

In addition, a full mission reprocessing campaign has been successfully completed, from BOM (Beginning Of Mission) to the present date, for all  L2 data products (IBI, FAC and TEC), in order to implement all the above-mentioned fixes and improvements in all the L2 processors. Data products have been regenerated and disseminated to users on 8 September 2026.

Consequently, these new data products are distributed with an increased product baseline and file counter 0502.