Requirement #274 


For variable: Downward short-wave irradiance at Earth surface

In application: Global NWP

Goal Breakthrough Threshold
Uncertainty 1 W.m-2 10 W.m-2 20 W.m-2
Stability/decade (if applicable)
Horizontal Resolution 10 km 30 km 100 km
Vertical Resolution
Observing Cycle 60 min 3 h 12 h
Timeliness 24 h 5 d 30 d


Validated: 2/10/09 Source: John Eyre
Comment: Confidence: reasonable
Def: :Not firm, but based on a strong heritage of experiments with similar data