BackForward Variable: Ionospheric Radio Absorption

Full name Ionospheric Radio Absorption
Definition Attenuation of a radio wave passing through the lower ionosphere.
Measuring Units dB Uncertainty Units dB
Horizontal Res Units km Vertical Res Units
Stability Units dB (Stability /decade)


Comment: Energetic particle precipitation and solar X-rays cause variations in the ionospheric radio absorption. Radio absorption can be monitored with ground-based radio wave sources and with riometers. Riometers measure the attenuation of vertically propagating radio waves from distant stellar sources at 30/38.2 MHz.
Last modified:
Applied in OSCAR/Space Gap Analysis: Yes
  • Domain: Outer Space
    • Sub-domain: Ionospheric disturbances
      • Variable: Ionospheric Radio Absorption
        • Measured in Layers:
          • Ionos
  • Cross-cutting themes:

Requirements defined for Ionospheric Radio Absorption  (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
592 Ionospheric Radio Absorption Ionos Space Weather 0.1 dB
0.5 dB
1 dB
100 km
200 km
500 km
60 sec
5 min
10 min
60 sec
10 min
60 min
Global tentative 2011-05-01 ICTSW-1