Supra-Arcade Downflow Catalog

The following is a catalog of solar flares with supra-arcade downflows (SADs) imaged during solar cycle 24 by the Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory (SDO). A full description of the catalog can be found in the accompanying publication, Simon & French (2026). The symbol definitions, acknowledgements, and information about citing the SADCat are provided below the catalog.

GOES SXR flare Source region CME AIA
No. Start time [UTC] Peak time [UTC] End time [UTC] Dur. [min] Imp. Class No. Lat. [°] Lon. [°] Speed [km/s] Accel. [m/s2] Mass [g] Preview X cen. [''] Y cen. [''] Width [''] Height [''] Get data

Symbol Definitions

* Uncertainty in the CME mass data reported by the SOHO LASCO CME Catalog (more information)

† CME correlated with another flare in the SADCat

Acknowledgements

Flare data came from the Hinode Flare Catalogue at https://hinode.isee.nagoya-u.ac.jp/flare_catalogue/, which is maintained by ISAS/JAXA and Institute for Space-Earth Environmental Research (ISEE), Nagoya University.

CME data came from the SOHO LASCO CME Catalog at https://cdaw.gsfc.nasa.gov/CME_list/index.html, which is generated and maintained at the CDAW Data Center by NASA and The Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA.

The SDO data used is courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.

Citing SADCat

If you use SADCat in your research, please cite the accompanying publication:

Simon, T. F., & French, R. J. 2026, "SADCat: A Catalog of Supra-Arcade Downflow Events in Solar Flares," Solar Physics, 301, 113, https://doi.org/10.1007/s11207-026-02708-z

BibTeX: 


@ARTICLE{simon_2026,
       author = {{Simon}, Trestan F. and {French}, Ryan J.},
        title = "{SADCat: A Catalog of Supra-Arcade Downflow Events in Solar Flares}",
      journal = {\solphys},
         year = 2026,
        month = jul,
       volume = {301},
       number = {7},
          eid = {113},
        pages = {113},
          doi = {10.1007/s11207-026-02708-z},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2026SoPh..301..113S},
}

If your work uses data originating from specific missions or catalogs reproduced in the SADCat, please also cite the original data providers.