Speaker
Description
Chorus waves play a significant role in the dynamic evolution of energetic electrons in the inner magnetosphere. Thus, understanding the spatial and temporal dynamics of these electrons requires global distributions of chorus waves, which are not usually possible to obtain from a single satellite mission. In this study, we use 11 years of data from both the Van Allen Probes mission and the Arase satellite to create a global model for the magnetic intensity of chorus waves. The statistical model is based on data with latitudinal coverage up to 40 degrees, providing good coverage over all magnetic local times (MLT) and at high L-shells. This results in a model with excellent spatial and temporal continuity. The model is generated for both Upper-Band Chorus (UBC; 0.5fce < f < fce) and Lower-Band Chorus (LBC; 0.05fce < f < 0.5fce) waves, where fce is the equatorial electron gyro-frequency. These models are parameterized by the Kp index for geomagnetic activity and are functions of L-shell, magnetic latitude (λ), and MLT. Our model is well-suited for inclusion in quasi-linear diffusion calculations of electron scattering rates and particle simulations in the inner magnetosphere.
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