Space Weather Products and Services
Swarm Utilisation Analysis (SUA)
Swarm Ionospheric Bubble Index (IBI) - Latest plots
| Swarm A 2025-12-11 50 days delay |
Swarm B 2025-12-11 50 days delay |
Swarm C 2025-12-11 50 days delay |
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Swarm Ionospheric Bubble Index (IBI) - Product description and access
Swarm Ionospheric Bubble Index (IBI) provides information on bubble climatology itself as well as on disturbance level of magnetic field data by combining electron density and magnetic field observations. Bubbles (low-latitude post sunset plasma irregularities) are an intrinsic regular phenomenon in the F-region ionosphere that leaves severe plasma density gradients, magnetic field variations and causes GPS signal scintillations.
The IBI is indexed as follows:
1: data is affected by irregularities (bubble)
-1: data is not suitable for irregularity detection
Swarm IBI 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 Common Data Format (CDF). The product names are IBIxTMS_2F, with x = A, B, C for the 3 satellites respectively.
More information on the Swarm L2 IBI product, including definitions, descriptions, metadata, and data access, is available at: https://swarmhandbook.earth.esa.int/catalogue/SW_IBIxTMS_2F.