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CEDAR Electrodynamics Thermosphere Ionosphere (ETI) Challenge for Systematic Assessment of Ionosphere/Thermosphere Models: NmF2, hmF2, and Vertical Drift Using Ground-Based ObservationsObjective quantification of model performance based on metrics helps us evaluate the current state of space physics modeling capability, address differences among various modeling approaches, and track model improvements over time. The Coupling, Energetics, and Dynamics of Atmospheric Regions (CEDAR) Electrodynamics Thermosphere Ionosphere (ETI) Challenge was initiated in 2009 to assess accuracy of various ionosphere/thermosphere models in reproducing ionosphere and thermosphere parameters. A total of nine events and five physical parameters were selected to compare between model outputs and observations. The nine events included two strong and one moderate geomagnetic storm events from GEM Challenge events and three moderate storms and three quiet periods from the first half of the International Polar Year (IPY) campaign, which lasted for 2 years, from March 2007 to March 2009. The five physical parameters selected were NmF2 and hmF2 from ISRs and LEO satellites such as CHAMP and COSMIC, vertical drifts at Jicamarca, and electron and neutral densities along the track of the CHAMP satellite. For this study, four different metrics and up to 10 models were used. In this paper, we focus on preliminary results of the study using ground-based measurements, which include NmF2 and hmF2 from Incoherent Scatter Radars (ISRs), and vertical drifts at Jicamarca. The results show that the model performance strongly depends on the type of metrics used, and thus no model is ranked top for all used metrics. The analysis further indicates that performance of the model also varies with latitude and geomagnetic activity level.
Document ID
20120010525
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Shim, J. S.
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Kuznetsova, M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rastatter, L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hesse, M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bilitza, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Butala, M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Codrescu, M.
(National Oceanic and Atmospheric Administration Boulder, CO, United States)
Emery, B.
(National Center for Atmospheric Research Boulder, CO, United States)
Foster, B.
(National Center for Atmospheric Research Boulder, CO, United States)
Fuller-Rowell, T.
(National Oceanic and Atmospheric Administration Boulder, CO, United States)
Huba, J.
(Naval Research Lab. Washington, DC, United States)
Mannucci, A. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Pi, X.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ridley, A.
(Michigan Univ. Ann Arbor, MI, United States)
Scherliess, L.
(Utah State Univ. Logan, UT, United States)
Schunk, R. W.
(Utah State Univ. Logan, UT, United States)
Stephens, P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Thompson, D. C.
(Air Force Research Lab. Albuquerque, NM, United States)
Zhu, L.
(Utah State Univ. Logan, UT, United States)
Anderson, D.
(Colorado Univ. Boulder, CO, United States)
Chau, J. L.
(Instituto Geofisico del Peru Lima, Peru)
Sojka, J. J.
(Utah State Univ. Logan, UT, United States)
Rideout, B.
(Massachusetts Inst. of Tech. Westford, MA, United States)
Date Acquired
August 26, 2013
Publication Date
December 31, 2011
Publication Information
Publication: Space Weather
Publisher: American Geophysical Union
Volume: 9
Subject Category
Space Radiation
Report/Patent Number
GSFC.JA.00400.2012
Funding Number(s)
CONTRACT_GRANT: NSF AGS-0905448
Distribution Limits
Public
Copyright
Other

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