WMO OSCAR | Details for Variable: Downward short-wave irradiance at Earth surface

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:

Earth System Application Categories and its related Application Areas:
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
Unknown:
- Climate-AOPC (deprecated)

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	Stability / decade	Hor Res	Obs Cyc	Timeliness	Coverage	Conf Level	Val Date	Source	General 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.