BackForward Variable: Background Luminance (surface)

Definition
Full name Background Luminance (surface)
Definition Luminous flux received from the background, per unit solid angle and per unit area where the Luminous flux is a quantity derived from radiant flux by evaluating the radiation according to its action upon the International Commission on Illumination standard photometric observer. (symbol: L; unit: lm. m–2. sr–1 = cd . m–2 )
Measuring Units cd . m –2 Uncertainty Units %
Horizontal Res Units Vertical Res Units
Stability Units % (Stability /decade)

 

Comment:
Last modified: 2011-06-23
Applied in OSCAR/Space Gap Analysis: No
Classification
  • Domain: Atmosphere
    • Sub-domain: Aerosols and radiation
      • Variable: Background Luminance (surface)
        • Measured in Layers:
          • Near Surface
  • Cross-cutting themes:

Requirements defined for Background Luminance (surface)  (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
681 Background Luminance (surface) Near Surface 2.8 Aeronautical Meteorology 50 %
36 sec
108 sec
36 sec
108 sec 		Global firm 2011-06-14 J van der Meulen For aeronautical meteorology, this measurement is needed at the runway only