Requirement #887 

Values

For variable: CH4 column average dry air mixing ratio

In application: 2.5 Atmospheric Climate Monitoring

Application-dependent Technical Priority: 0.5

Goal Breakthrough Threshold Priority
Uncertainty 7 ppb 10 ppb 20 ppb 0.5
Layer/s Quality
Coverage Quality
Stability/decade (if applicable) 1 ppb 2 ppb 4 ppb 0.5
Horizontal Resolution 0.3 km 1 km 10 km 0.5
Vertical Resolution
Observing Cycle 60 min 12 h 3 d 0.5
Timeliness 24 h 7 d 14 d 0.5

 

Validated: 4/11/25 Source: GCOS-245: The 2022 ECVs Requirements (GCOS-245)
General Comment: 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