BackForward Variable: Solar Ca II-K image

Definition
Full name Solar Ca II-K image
Definition Image of the Sun in the K-line of Ca-II  (393.4 nm)
Measuring Units erg·(cm2 arcsec s)-1 Uncertainty Units %
Horizontal Res Units arcsec Vertical Res Units
Stability Units % (Stability /decade)

 

Comment: Primary proxy for UV irradiance
Last modified: 2011-06-08
Applied in OSCAR/Space Gap Analysis: Yes
Classification
  • Domain: Outer Space
    • Sub-domain: Solar monitoring
      • Variable: Solar Ca II-K image
        • Measured in Layers:
          • Sun
  • Cross-cutting themes:
  • Earth System Application Categories and its related Application Areas:
  • Unknown:

Requirements defined for Solar Ca II-K image  (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
599 Solar Ca II-K image Sun Space Weather 1 %
1 %
10 % 		1 arcsec
1 arcsec
5 arcsec 		60 sec
60 sec
10 min 		60 sec
5 min
15 min 		Global tentative 2011-05-01 ICTSW-1 Proxy for EUV irradiance