edu.ucar.opensky::articles:25640 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T20:07:44.250185 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7fr01c3 Comparisons of ion density from IVM with the GNSS differential TEC-derived electron density on the FORMOSAT-7/COSMIC-2 mission 2022-08-01T00:00:00Z publication https://n2t.org/ark:/85065/d7fr01c3 https://doi.org/10.1029/2022JA030392 Wu, Qian author Pedatella, Nicholas M. author Braun, John J. author Schreiner, William S. author Weiss, Jan-Peter author Chou, Min-Yang author Zakharenkova, Irina author Cherniak, Iurii author Hunt, Douglas C. author Heelis, R. author Van Hove, Teresa author UCAR/NCAR - Library publisher We report on a new method to derive the on-orbit electron density using the Tri Global Navigation Satellite System (GNSS) Radio-occultation System (Tri-GNSS Radio occultation System (TGRS)) differential total electron content data and compare it to the Constellation Observing System for Meteorology Ionosphere and Climate-2 Ion Velocity Meter (IVM) ion density data. We found that the IVM ion density is about 8%-15% lower than the TGRS derived density at the insertion orbit (similar to 710 km) and 5% higher at the mission operation orbit (similar to 540 km) for reasons that are currently unknown. Using a linear coefficient, we scaled the IVM data to remove the offset between TGRS-derived electron density and the IVM ion density for the two orbital heights. We believe the scaled IVM densities eliminate any inter-spacecraft discrepancy, making the IVM data suitable for use in high precision multi-satellite scientific investigations of longitudinal and local time variations of non-migrating tides, planetary waves and space weather operational applications. 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