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Storm‐Time Configuration Of The Inner Magnetosphere: Lyon‐Fedder‐Mobarry Mhd Code, Tsyganenko Model, And Goes Observations, Chia-Lin L. Huang, Harlan E. Spence, J. G. Lyon, F. R. Toffoletto, H. J. Singer, S. Sazykin
Storm‐Time Configuration Of The Inner Magnetosphere: Lyon‐Fedder‐Mobarry Mhd Code, Tsyganenko Model, And Goes Observations, Chia-Lin L. Huang, Harlan E. Spence, J. G. Lyon, F. R. Toffoletto, H. J. Singer, S. Sazykin
Physics & Astronomy
[1] We compare global magnetohydrodynamic (MHD) simulation results with an empirical model and observations to understand the magnetic field configuration and plasma distribution in the inner magnetosphere, especially during geomagnetic storms. The physics-based Lyon-Fedder-Mobarry (LFM) code simulates Earth's magnetospheric topology and dynamics by solving the equations of ideal MHD. Quantitative comparisons of simulated events with observations reveal strengths and possible limitations and suggest ways to improve the LFM code. Here we present a case study that compares the LFM code to both a semiempirical magnetic field model and to geosynchronous measurements from GOES satellites. During a magnetic cloud event, the …
An Event-Based Approach To Validating Solar Wind Speed Predictions: High-Speed Enhancements In The Wang-Sheeley-Arge Model, M. J. Owens, C. N. Arge, Harlan E. Spence, A. Pembroke
An Event-Based Approach To Validating Solar Wind Speed Predictions: High-Speed Enhancements In The Wang-Sheeley-Arge Model, M. J. Owens, C. N. Arge, Harlan E. Spence, A. Pembroke
Physics & Astronomy
[1] One of the primary goals of the Center for Integrated Space Weather Modeling (CISM) effort is to assess and improve prediction of the solar wind conditions in near-Earth space, arising from both quasi-steady and transient structures. We compare 8 years of L1 in situ observations to predictions of the solar wind speed made by the Wang-Sheeley-Arge (WSA) empirical model. The mean-square error (MSE) between the observed and model predictions is used to reach a number of useful conclusions: there is no systematic lag in the WSA predictions, the MSE is found to be highest at solar minimum and lowest …