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This objective is part of the general characterisation of the solar wind and can be addressed by the in situ instruments (with the SOOP I_DEFAULT). No specific operational planning is needed. However, it will benefit from joint observations with PSP and L1, especially during radial alignments.
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(To be moved to an overarching section (to be created) of characterisation of the solar wind together with other general in situ objectives).
Duration:
- Long-term observations.
Other constraints:
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