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space weather
The conditions and phenomena in space and specifically in the near-earth environment that may affect space assets or space operations. Space weather may impact spacecraft and ground-based systems. Space weather is influenced by phenomena such as solar flare activity, ionospheric variability, energetic particle events, and geophysical events. See also space; space asset. (JP 3-14)
Source: US DoD Joint Publication 1-02, DOD Dictionary of Military and Associated Terms (as amended through 9 June 2004).
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