edu.ucar.opensky::articles:26458 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T19:28:02.079196 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7r215c1 https://doi.org/10.5065/png1-de40 https Related Dataset #1 WACCM-X Simulation Data during November 03-04, 2021 Investigation of the GOLD observed merged nighttime EIA with WACCM-X simulations during the storm of 3 and 4 November 2021 2023-07-16T00:00:00Z publication https://n2t.org/ark:/85065/d7r215c1 https://doi.org/10.1029/2023GL103603 Wu, Kun author Qian, Liying author Wang, Wenbin author Cai, X. author McInerney, Joseph author UCAR/NCAR - Library publisher During the storm on 3 and 4 November 2021, the Global-scale Observations of the Limb and Disk (GOLD) mission observed well separated equatorial ionization anomaly (EIA) crests post sunset on 3 November, but merged EIA on 4 November. We used the Whole Atmosphere Community Climate Model-eXtended to simulate the EIA structures during the two nights. The simulations show two separated post sunset EIA crests on 3 November but merged post sunset EIA crests on 4 November, which are qualitatively consistent with the GOLD observations. Numerical simulations and Ionospheric Connection Explorer neutral wind observations illustrate that the formation of merged EIA crests was due to several hours of downward E x ${ imes} $ B drifts before and after sunset. Further diagnostic analysis revealed that it was mainly driven by westward electric fields caused by the disturbance dynamo electric field during the recovery phase of the storm. 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 Copyright 2023 American Geophysical Union (AGU). None eng geoscientificInformation