BackForward Variable: hmF2

Definition
Full name hmF2
Definition Altitude of the peak density in the ionospheric F2 layer.
Measuring Units km Uncertainty Units km
Horizontal Res Units km Vertical Res Units
Stability Units km (Stability /decade)

 

Comment: Indication of ionospheric electric field variations. Important parameters to diagnose global ionospheric variability.
Last modified: 2014-11-28
Applied in OSCAR/Space Gap Analysis: No
Classification
  • Domain: Outer Space
    • Sub-domain: Ionospheric disturbances
      • Variable: hmF2
        • Measured in Layers:
          • n/a (2D)
          • Ionos
  • Cross-cutting themes:

Requirements defined for hmF2  (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, threshold orange
Application-dependent Technical Priority (ATP) Magenta and Relative priority of the attributes Red

Id Variable Layer App Area ATP Uncertainty Layer/s Quality Coverage Quality Stability / decade Hor Res Ver Res Obs Cyc Timeliness Coverage Conf Level Val Date Source General Comment Application Area Comment Horizontal Coverage Comment Observation Comment Performance Comment
1157 hmF2 n/a (2D) 1.3 Ionosphere, Thermosphere and Geomagnetic Field Forecasting and Monitoring 1.0 1 km
5 km
10 km
0.5 		100 km
200 km
500 km
0.5 		5 min
15 min
60 min
0.5 		60 sec
10 min
60 min
0.5 		Global land reasonable 2025-12-07 New source to be determined Values discussed with ET-SWX. Submitted by Kirsti Kauristie AA 1.3 POC. hmF2 is a parameter derived from ionosonde data. It can be used to estimate the altitude of electron density maximum in the F2 layer of ionosphere. Attributes for uncertainty and stability need still additional discussions.