BackForward Variable: Downward short-wave irradiance at Earth surface

Definition
Full name Downward short-wave irradiance at Earth surface
Definition Flux density of the solar radiation at the Earth surface
Measuring Units W.m-2 Uncertainty Units W.m-2
Horizontal Res Units km Vertical Res Units
Stability Units W.m-2 (Stability /decade)

 

Comment: This variable may be specified for both all-sky and clear-sky (cloud-free) conditions.
Last modified: 2011-06-23
Applied in OSCAR/Space Gap Analysis: Yes
Classification
  • Domain: Atmosphere
    • Sub-domain: Aerosols and radiation
      • Variable: Downward short-wave irradiance at Earth surface
        • Measured in Layers:
          • Near Surface
  • Cross-cutting themes:

Requirements defined for Downward short-wave irradiance at Earth surface  (4)

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
93 Downward short-wave irradiance at Earth surface Near Surface Climate-AOPC (deprecated) 5 W.m-2
6.5 W.m-2
10 W.m-2 		25 km
50 km
100 km 		24 h
2 d
5 d 		24 h
3 d
30 d 		Global firm 2007-07-19 AOPC
274 Downward short-wave irradiance at Earth surface Near Surface 2.1 Global Numerical Weather Prediction and Real-time Monitoring 1 W.m-2
10 W.m-2
20 W.m-2 		10 km
30 km
100 km 		60 min
3 h
12 h 		24 h
5 d
30 d 		Global reasonable 2009-02-10 John Eyre
701 Downward short-wave irradiance at Earth surface Near Surface 2.3 Nowcasting / Very Short-Range Forecasting 1 W.m-2
10 W.m-2
20 W.m-2 		5 km
15 km
50 km 		60 sec
10 min
60 min 		60 sec
10 min
60 min 		Global reasonable 2013-04-15 P. Ambrosetti Rapid observation observing cycle needed for solar energy power prediction
788 Downward short-wave irradiance at Earth surface Near Surface 2.5 Atmospheric Climate Monitoring 0.5 1 W.m-2
5 W.m-2
10 W.m-2
0.5 		0.2 W.m-2
0.5 W.m-2
1 W.m-2
0.5 		10 km
50 km
100 km
0.5 		60 min
24 h
30 d
0.5
30 d 		Global firm 2023-04-27 GCOS-245: The 2022 ECVs Requirements (GCOS-245) Requirements for uncertainty are specified at 2-sigma.