Xueling's paper, which contributed to completion of her PhD degree, analyzes the occurrence of ULF waves observed by satellites and SuperDARN radars.
Links to the papers:
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JA025914

https://agupubs.onlinelibrary.wiley.com/action/showCitFormats?doi=10.1029%2F2018JA026003

The citation from JGR - Space Physics:
We are excited to share that your research, published in Journal of Geophysical Research: Space Physics, is among the top 10% most downloaded papers!
What this means for you:
Among work published between January 2018 and December 2019, yours received some of the most downloads in the 12 months following online publication.
Your research generated immediate impact and helped to raise the visibility of Journal of Geophysical Research: Space Physics.
In recognition of your work, we’re pleased to offer you a certificate of achievement.