# Evaluation of the Mid-Latitude Ionospheric trough Using GRACE Data
## 4 Conclusions
GRACE data were recently reprocessed, now covering the entire mission, and data of the follow-on mission, GRACE-FollowOn, are also available ([[https://earth.esa.int/eogateway/news/new-swarm-tiro-dataset-released](https://earth.esa.int/eogateway/news/new-swarm-tiro-dataset-released)]([https://earth.esa.int/eogateway/news/new-swarm-tiro-dataset-released](https://earth.esa.int/eogateway/news/new-swarm-tiro-dataset-released)), accessed on 27 June 2022), offering perspectives of increased climatology of the MIT for future works. **Author Contributions:** Conceptualization, K.L. and M.M.H. ; methodology, K.L. and M.M.H. ; software, K.L. ; formal analysis, K.L. and M.M.H. ; visualization, K.L. ; writing--original draft preparation, K.L. ; writing--review and editing, K.L., M.M.H. and C.S. ; supervision, M.M.H. ; funding acquisition, M.M.H. All authors have read and agreed to the published version of the manuscript. **Funding:** This research was funded by DLR-SO internal funding. **Data Availability Statement:** [PERSON]; [PERSON]; [PERSON] GRACE Electron Density Derived from the K-Band Ranging System (KBR). 2021, doi:10.5880/GFZ.2.3.2021.003 [20]. **Acknowledgments:** The authors would like to thank the German Research Centre for Geosciences (GFZ), Potsdam, for providing the GRACE data, which are available at [[ftp://isdcftp.gfz-potsdam](ftp://isdcftp.gfz-potsdam)]([ftp://isdcftp.gfz-potsdam](ftp://isdcftp.gfz-potsdam)). de/grace/IONOSPHERE/KBR_Electron_Density/0101/ (accessed on 5 July 2022). The authors would also like to thank the OMNIWeb interface for the OMNI data, which are available at [[https://omniweb.gsfc.nasa.gov](https://omniweb.gsfc.nasa.gov)]([https://omniweb.gsfc.nasa.gov](https://omniweb.gsfc.nasa.gov)) (accessed on 5 July 2022). **Conflicts of Interest:** The authors declare no conflict of interest. OMNIWeb: High Resolution OMNI. Available online: [[https://omniweb.gsfc.nasa.gov/form/omni_min.html](https://omniweb.gsfc.nasa.gov/form/omni_min.html)]([https://omniweb.gsfc.nasa.gov/form/omni_min.html](https://omniweb.gsfc.nasa.gov/form/omni_min.html)) (accessed on 22 February 2022). * [PERSON] et al. (2022) [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON]; [PERSON] Geomagnetic Activity Index Hpo. _Geophys. Res. Lett._**2022**, _49_. [CrossRef]
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