•Need to cover broad frequency range
•High frequencies
–Filament activation, sigmoids, proton flare regions
•Lowest frequencies ( important
to go at ≤100 MHz)
–Shock formation and propagation
–Regions of triggering the event (null point)
–Large scale (3-D) geometry of CMEs, IP disturbances reaching Earth
•Forecast CME reaching Earth and
•Bz at Earth need both High and low frequencies
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