edu.ucar.opensky::articles:25263 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T22:46:27.328962 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7cc149d Local time variations of the Equatorial Electrojet in simultaneous response to Subauroral Polarization Streams during quiet time 2022-04-16T00:00:00Z publication https://n2t.org/ark:/85065/d7cc149d https://doi.org/10.1029/2022GL098623 Zhang, K. author Wang, H. author Wang, Wenbin author UCAR/NCAR - Library publisher Based on 1-year equatorial electrojet (EEJ) measurements from Swarm, and ion velocity from the Defense Meteorological Satellite Program, this study first examines the simultaneous effects of the subauroral polarization streams (SAPS) on EEJ during quiet time. The changes in EEJ (Delta EEJ) vary significantly with local time. Delta EEJ flows westward at dawn and is gradually enhanced to eastward at dusk. The eastward Delta EEJ at post-noon might be driven indirectly by the upward electric field associated with SAPS electric field at SAPS channel, whereas Delta EEJ at pre-noon might be directly attributed to the penetrating SAPS-related polarization electric field. Under stronger geomagnetic forcing, a stronger intensity of westward Delta EEJ at dawn and noon is produced, whereas a stronger eastward Delta EEJ at dusk is generated because of a faster SAPS velocity. 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 2022 American Geophysical Union. None eng geoscientificInformation