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Objectives and Applications
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POLAR is a NASA/GSFC solar-terrestrial mission within the GGS (Global Geospace Science) program and the ISTP (International Solar Terrestrial Physics) program. The objective is to study the ionospheric role in substorm phenomena and in the overall magnetospheric energy balance (measurements of plasma entry and transport into the northern dayside cusp regions at high altitudes and over the southern polar cap at low altitudes, global imaging of the northern auroral zone).
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