Variable:
CH4
Requirements defined for CH4 (10)
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 | Layer/s Quality | Coverage Quality | Stability / decade | Hor Res | Ver Res | Obs Cyc | Timeliness | Coverage | Conf Level | Val Date | Source | General Comment | Application Area Comment | Horizontal Coverage Comment | Observation Comment | Performance Comment |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 75 | CH4 | MUS M |
Climate-AOPC (deprecated) | 2 ppb 4 ppb 10 ppb |
50 km 100 km 250 km |
2 m 2.5 m 4 m |
3 h 4 h 6 h |
30 d 60 d 180 d |
Global | firm | 2007-07-19 | AOPC | 20 ppb Acc goal and 120 ppb Acc Min | ||||||||
| 76 | CH4 | FT | Climate-AOPC (deprecated) | 2 ppb 4 ppb 10 ppb |
50 km 100 km 250 km |
2 m 2.5 m 4 m |
3 h 4 h 6 h |
30 d 60 d 180 d |
Global | firm | 2007-07-19 | AOPC | 20 ppb Acc goal and 120 ppb Acc Min | ||||||||
| 77 | CH4 | UTLS | Climate-AOPC (deprecated) | 2 ppb 4 ppb 10 ppb |
50 km 100 km 250 km |
2 m 2.5 m 4 m |
3 h 4 h 6 h |
30 d 60 d 180 d |
Global | firm | 2007-07-19 | AOPC | 20 ppb Acc goal and 120 ppb Acc Min | ||||||||
| 78 | CH4 | PBL | Climate-AOPC (deprecated) | 2 ppb 4 ppb 10 ppb |
10 km 20 km 50 km |
2 m 2.5 m 3 m |
3 h 4 h 6 h |
30 d 60 d 180 d |
Global | firm | 2007-07-19 | AOPC | 20 ppb Acc goal and 120 ppb Acc Min | ||||||||
| 141 | CH4 | MUS UTLS FT PBL M |
Atmospheric Chemistry (deprecated) | 2 ppb 3.4 ppb 10 ppb |
50 km 100 km 500 km |
1 m 1.6 m 4 m |
6 h 10 h 24 h |
3 d 4 d 7 d |
Global | firm | 2002-05-24 | GAW Report No. 159 | Ozone chem | ||||||||
| 797 | CH4 | 2.5 Atmospheric Climate Monitoring | 0.5 | 1 ppb 2 ppb 5 ppb 0.5 |
1 ppb 1 ppb 3 ppb 0.5 |
100 km 500 km 2000 km 0.5 |
100 m 1000 m 3000 m 0.5 |
60 min 24 h 7 d 0.5 |
24 h 30 d 180 d 0.5 |
Global | firm | 2023-05-03 | GCOS-245: The 2022 ECVs Requirements (GCOS-245) | Requirements for uncertainty are at 2-sigma | |||||||
| 879 | CH4 | PBL | 2.7 Atmospheric Composition Information Services in Urban and Populated Areas | 8 ppb 18 ppb 36 ppb |
1 ppb 2 ppb 5 ppb |
0.5 km 2 km 4 km |
20 m 100 m 500 m |
60 min 24 h 7 d |
24 h 30 d 182 d |
Local | firm | 2022-01-05 | GAW Expert Team on Atmospheric Composition Network Design and Evolution | Uncertainties are provided as 2 sigma. They represent the sum of random and systematic error. | |||||||
| 79 | CH4 | TC | Climate-AOPC (deprecated) | 2 ppb 4 ppb 10 ppb |
10 km 50 km 250 km |
3 h 4 h 6 h |
30 d 60 d 180 d |
Global | reasonable | 2007-07-19 | AOPC | 20 ppb Acc goal and 120 ppb Acc Min | |||||||||
| 80 | CH4 | TrC | Climate-AOPC (deprecated) | 2 ppb 4 ppb 10 ppb |
10 km 20 km 50 km |
3 h 4 h 6 h |
30 d 60 d 180 d |
Global | reasonable | 2007-07-19 | AOPC | 20 ppb Acc goal and 120 ppb Acc Min | |||||||||
| 798 | CH4 | UTLS | 2.5 Atmospheric Climate Monitoring | 100 km 200 km |
2 m | 4 h | Global | reasonable | 2019-09-25 | GCOS-200: The Global Observing System for Climate: Implementation Needs (Published 2016) | Requirements for uncertainty and stability in the GCOS IP are expressed in different units than in the OSCAR/Requirements |