Park, Jaeheung4; Noja, Max4; Stolle, Claudia3; Luehr, Hermann4
1 Geomagnetism, National Space Institute, Technical University of Denmark2 Solar System Physics, National Space Institute, Technical University of Denmark3 National Space Institute, Technical University of Denmark4 German Research Centre for Geosciences
In the post-sunset tropical ionospheric F-region plasma density often exhibits depletions, which are usually called equatorial plasma bubbles (EPBs). In this paper we give an overview of the Swarm Level 2 Ionospheric Bubble Index (IBI), which is a standard scientific data of the Swarm mission. This product called L2-IBI is generated from magnetic field and plasma observations onboard Swarm, and gives information as to whether a Swarm magnetic field observation is affected by EPBs. We validate the performance of the L2-IBI product by using magnetic field and plasma measurements from the CHAMP satellite, which provided observations similar to those of the Swarm. The L2-IBI product is of interest not only for ionospheric studies, but also for geomagnetic field modeling; modelers can de-select magnetic data which are affected by EPBs or other unphysical artifacts.
Earth, Planets and Space, 2013, Vol 65, Issue 11, p. 1333-1344