Requirement #699 


For variable: Snow depth

In application: Nowcasting / VSRF

Goal Breakthrough Threshold
Uncertainty 0.1 cm 0.5 cm 2 cm
Stability/decade (if applicable)
Horizontal Resolution 5 km 10 km 15 km
Vertical Resolution
Observing Cycle 10 min 60 min 24 h
Timeliness 10 min 60 min 24 h


Validated: 4/15/13 Source: P. Ambrosetti
Comment: Over populated area and along transport routes requirements are more strict than elsewhere. Confidence: reasonable
Def: :Not firm, but based on a strong heritage of experiments with similar data
  • Domain: Terrestrial
    • Subdomain: Land surface
      • Variable: Snow depth
        • Applicable (vertical) layers:
          • Land surface
        • Horizontal Coverage: Global land