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Swarm Utilisation Analysis (SUA)

Swarm Field-Aligned Current (FAC) - Latest plots


Swarm A
2026-01-24
6 days delay
Swarm B
2026-01-24
6 days delay
Swarm C
2026-01-24
6 days delay
Swarm A FAC overview Swarm B FAC overview Swarm C FAC overview


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Swarm Field-Aligned Current (FAC) - Product description and access

Swarm satellites provide the Field-Aligned Currents (FACs) which play an important role in magnetosphere-ionosphere interactions. They are the main mechanism of energy coupling from solar wind into high-latitude upper atmosphere. As FAC acts as connector between the magnetosphere and ionosphere at high latitudes, exact information an FACs can help to give constraints on many physical parameters: e.g., ionospheric conductivity.

Swarm FAC is provided as Level 2 (L2) data product with a 1Hz cadence by ESA’s Earth’s Observation program. The data are provided in daily files in CDF format (Swarm L2 product format). The product names are FACxTMS_2F, with x = A, B, C for the 3 satellites respectively.

More information can be found here:
L2 product definition
and
Swarm L2 FAC product description

Swarm FAC data and metadata (XML Header file having extension .HDR: more information) are available at (ESA EO Single Sign-On registration is required: more information)
Swarm FACxTMS_2F data