edu.ucar.opensky::articles:42579 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T18:02:06.179906 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.net/ark:/85065/d7rr23mm Near‐earth reconnection contributing to recovery phase of geomagnetic storm 2024-12-01T00:00:00Z publication https://n2t.net/ark:/85065/d7rr23mm https://doi.org/10.1029/2024GL112730 Liu, Z. author Angelopoulos, V. author Nishimura, Y. author Shen, Y. author Shi, Xueling author Hartinger, M. D. author UCAR/NCAR - Library publisher Recent observations show very near&#8208;Earth reconnection (&#8764;8&#8211;13R E ) could efficiently power the ring current during the main phase of geomagnetic storms, but whether the recovery phase might be contributed remains unclear. During the recovery phase of the May 2024 major geomagnetic storm, intense auroral brightening and geomagnetic disturbances were observed at midnight, indicative of particle injections. Current wedges observed by mid&#8208;latitude ground magnetometers around midnight suggest dipolarizing flux bundles (DFBs). The latitude of the auroral brightening was clearly lower than usual, suggesting near&#8208;Earth reconnection (NERX) was closer to Earth than during substorms (&#8764;20&#8211;30R E ). GOES&#8208;18 at midnight detected magnetic field and plasma signatures consistent with DFBs, following an extremely thin current sheet likely compressed by strong upstream dynamic pressure. These results indicate NERX could have been close enough for resultant DFBs to penetrate geosynchronous orbit and contribute to the ring current during the recovery phase. This scenario deserves further examination in future. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication <span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</span> None eng geoscientificInformation