BackForward Variable: Solar X-ray flux

Full name Solar X-ray flux
Definition Integrated X-ray flux over the solar disk
Measuring Units watt·m-2 Uncertainty Units watt·m-2
Horizontal Res Units Vertical Res Units
Stability Units watt·m-2 (Stability /decade)


Comment: Typical measurements include the 0.1-0.8 nm and the 0.05-0.4 nm wavelength bands. Used to track solar eruptions and estimate ionospheric radio absorption.
Last modified: 2015-06-15
Applied in OSCAR/Space Gap Analysis: Yes
  • Domain: Outer Space
    • Sub-domain: Solar monitoring
      • Variable: Solar X-ray flux
        • Measured in Layers:
          • TOA
          • n/a
  • Cross-cutting themes:

Requirements defined for Solar X-ray flux  (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
609 Solar X-ray flux n/a Space Weather 0.05 watt·m-2
0.05 watt·m-2
0.2 watt·m-2
3 sec
60 sec
60 sec
5 min
Global tentative 2011-05-01 ICTSW-1