BackForward Variable: Solar wind velocity

Full name Solar wind velocity
Definition Vector velocity of solar wind plasma
Measuring Units km·s-1 Uncertainty Units %
Horizontal Res Units Vertical Res Units
Stability Units % (Stability /decade)


Comment: Typically measured at the L1 Lagrange point, but also valuable at other locations such as the L5 Lagrange point. Derived from measurements of electron and ion fluxes in the low-energy solar wind range (electrons: 1 to 1240 eV; ions: 0.26 to 35 keV). Vital for forecasts and warnings of geomagnetic storms.
Last modified: 2014-11-26
Applied in OSCAR/Space Gap Analysis: Yes
  • Domain: Outer Space
    • Sub-domain: Energetic particles and solar wind
      • Variable: Solar wind velocity
        • Measured in Layers:
          • L1
  • Cross-cutting themes:

Requirements defined for Solar wind velocity  (1)

This tables shows all related requirements. For more operations/filtering, please consult the full list of Requirements
Note: In reading the values, goal is marked blue, breakthrough green and threshold orange

Id Variable Layer App Area Uncertainty Stability / decade Hor Res Ver Res Obs Cyc Timeliness Coverage Conf Level Val Date Source
608 Solar wind velocity L1 Space Weather 5 %
5 %
20 %
10 sec
20 sec
60 sec
60 sec
5 min
15 min
Global tentative 2011-05-01 ICTSW-1