Articles | Volume 36, issue 2
https://doi.org/10.5194/angeo-36-287-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.An initial ULF wave index derived from 2 years of Swarm observations
Data sets
ESA Earth Observation User Data https://earth.esa.int/web/guest/umsso?orig_request=/web/guest/picommunity/myearthnet
Solar wind data http://omniweb.gsfc.nasa.gov/
AE and SYM-H indices data http://wdc.kugi.kyoto-u.ac.jp/index.html