Text of Deviren, M.N., Cor, I., Arikan, F. and Gulyaeva, T.L. (1) Hacettepe University, Turkey,...
Deviren, M.N., Cor, I., Arikan, F. and Gulyaeva, T.L. (1) Hacettepe University, Turkey, firstname.lastname@example.org (2) IZMIRAN, Russia, email@example.com GOAL : Develop a space weather risk index/indicator based on variability of ionospheric parameters computed from models. Candidates : Parameters calculated from ionospheric models. Variability of Ne, TEC, foF2, hmF2, Te, Ti, Diffusion coefficient, D and drift velocity, Composite Model of Current density, Conductivity, Background ionospheric electric potential, Models : IRI-Plas, NRL-MSIS, IGRF, HWM-93 1/5
Conservation of charge, Quasi-neutrality, Current density Conservation of Momentum Ambipolar diffusion coefficient and drift velocity Transport can include diffusion, neutral winds and vertical electromagnetic drift. Maxwells Equations: Consequence:, Define: Composite Current Density : 2/5
Gradient of Ne at 250 km, IRI-Plas 3/5 where is the ratio of gyrofrequency to collision frequency, and
The physical parameters of ionosphere, such as current density, drift velocity, diffusion coefficient, conductivity can be computed using ionospheric models. IRI-Plas can input GIM-TEC and update Ne, foF2 and hmF2. Spatio-Temporal Variability over the parameter maps can be obtained to indicate direction and magnitude of change. Electrostatic potential can be computed from: This study is supported by the joint grant of TUBITAK 112E568 and RFBR 13-02-91370-CT_a. References: Withers, P., Theoretical models of ionospheric electrodynamics and plasma transport, JGR-Space Physics, 113, A07301, 1-12, 2008. Banks, P.M., Kockarts, G., Aeronomy, Elsevier, New York, 1973. Rishbeth, H., Garriott, O.K., Introduction to Ionospheric Physics, Elsevier, New York, 1969. 6/5 Conclusion 41st COSPAR Scientific Assembly Special COSPAR C1.3 /PSW Session Regions of the Enhanced Risk for the Ionospheric Weather Regions of the Enhanced Risk for the Ionospheric Weather 30 July 7 August 2016, Istanbul, Turkey, MSO Feza Arikan, DO Tamara Gulyaeva. Your Contributions are Welcome!