edu.ucar.opensky::articles:17358 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T15:34:02.780383 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7kk9d30 Comparison of COSMIC ionospheric measurements with ground-based observations and model predictions: Preliminary results 2007-07-25T00:00:00Z publication https://n2t.org/ark:/85065/d7kk9d30 https://doi.org/10.1029/2006JA012240 Lei, Jiuhou author Syndergaard, Stig author Burns, Alan author Solomon, Stanley C. author Wang, Wenbin author Zeng, Zhen author Roble, Raymond G. author Wu, Qian author Kuo, Ying-Hwa author Holt, J. author Zhang, S. author Hysell, D. author Rodrigues, F. author Lin, C. author UCAR/NCAR - Library publisher Electron densities retrieved from the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) radio occultation (RO) measurements are compared with those measured by incoherent scatter radars (ISR) and ionosondes in this paper. These results show that electron density profiles retrieved from COSMIC RO data are in agreement with the ISR and ionosonde measurements. The ionospheric characteristics (N mF₂ and h mF₂) derived from the COSMIC satellites are also compared with those calculated by the latest International Reference Ionosphere model (IRI-2001) and the National Center for Atmospheric Research Thermosphere-Ionosphere-Electrodynamics General Circulation Model (NCAR-TIEGCM). The comparison of the magnitude of the COSMIC N mF₂ data with those calculated by the IRI model and the TIEGCM is good. However, features such as the north-south asymmetry and longitudinal variation of the equatorial anomaly that are seen in the COSMIC data and the TIEGCM simulations are not fully present in the IRI model. On the other hand, the TIEGCM produces a stronger winter anomaly than that seen in either the COSMIC data or the IRI model. 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 An edited version of this paper was published by AGU. Copyright 2007 American Geophysical Union. None eng geoscientificInformation