Requirement #1130 

Values

For variable: Specific humidity

In application: 2.5 Atmospheric Climate Monitoring

Application-dependent Technical Priority: 0.5

Goal Breakthrough Threshold Priority
Uncertainty 0.1 g kg-1 0.5 g kg-1 1 g kg-1 0.5
Layer/s Quality
Coverage Quality
Stability/decade (if applicable) 0.01 g kg-1 0.05 g kg-1 0.1 g kg-1 0.5
Horizontal Resolution 15 km 100 km 500 km 0.5
Vertical Resolution 0.001 km 0.01 km 0.1 km 0.5
Observing Cycle 50 min 60 min 3 h 0.5
Timeliness 60 min 5 d 30 d 0.5

 

Validated: 4/11/25 Source: GCOS-245: The 2022 ECVs Requirements (GCOS-245)
General Comment: Uncertainty at 2 sigma Confidence: firm
Def: :Result of impact studies of actual data used in actual applications of numerical or conceptual models
Application Area Comment: Horizontal Coverage Comment:
Observation Comment: Performance Comment:
Specifications
  • Domain: Atmosphere
    • Subdomain: Basic atmospheric
      • Variable: Specific humidity
        • Applicable (vertical) layers:
          • PBL
        • Horizontal Coverage: Global