Data sources

CHAMP and Swarm solar activity- and height-scaled polar cap plasma density measurements (doi:10.5281/zenodo.3813146)
Swarm-EISCAT conjunction list (2013-2019)
- CSV file with a list of all conjunctions between Swarm A–C and either EISCAT-Svalbard or EISCAT-Tromsø Incoherent Scatter Radar.
- Conjunctions were identified by NASA’s «Satellite Situation Center Web» Query tool in August 2019.
Swarm-Cluster conjunction lists
- Cluster/Swarm A and C conjunctions
  - CSV file with a list of all conjunctions between Swarm-Alpha and Cluster-4.
  - Conjunctions were identified by NASA’s «Satellite Situation Center Web» Query tool in Nov 2018.
- Cluster/Swarm B conjunctions
  - CSV file with a list of all conjunctions between Swarm-Bravo and Cluster-4.
  - Conjunctions were identified by NASA’s «Satellite Situation Center Web» Query tool in Nov 2018.