BackForward Variable: CH4 column average dry air mixing ratio

Definition
Full name CH4 column average dry air mixing ratio
Definition 2D Column integrated number of molecules of the target gas (CH4, methane) divided by that of dry air expressed in mole fraction
Measuring Units nmol/mol Uncertainty Units nmol/mol
Horizontal Res Units km Vertical Res Units
Stability Units nmol/mol (Stability /decade)

 

Comment:
Last modified: 2021-11-25
Applied in OSCAR/Space Gap Analysis: No
Classification
  • Domain: Atmosphere
    • Sub-domain: Atmospheric chemistry
      • Variable: CH4 column average dry air mixing ratio
        • Measured in Layers:
          • TC
  • Cross-cutting themes:

Requirements defined for CH4 column average dry air mixing ratio  (4)

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 and threshold orange

Id Variable Layer App Area Uncertainty Stability / decade Hor Res Ver Res Obs Cyc Timeliness Coverage Conf Level Val Date Source
884 CH4 column average dry air mixing ratio TC Forecasting Atmospheric Composition 7 nmol/mol
10 nmol/mol
20 nmol/mol
1 nmol/mol
2 nmol/mol
5 nmol/mol
0.3 km
1 km
10 km
60 min
12 h
3 d
24 h
7 d
14 d
Global firm 2021-12-09 GAW Expert Team on Atmospheric Composition Network Design and Evolution
885 CH4 column average dry air mixing ratio TC Monitoring Atmospheric Composition 7 nmol/mol
10 nmol/mol
20 nmol/mol
1 nmol/mol
2 nmol/mol
5 nmol/mol
0.3 km
1 km
10 km
60 min
12 h
3 d
24 h
7 d
14 d
Global firm 2021-12-09 GAW Expert Team on Atmospheric Composition Network Design and Evolution
886 CH4 column average dry air mixing ratio TC Providing Atmospheric Composition information to support services in urban and populated areas 7 nmol/mol
10 nmol/mol
20 nmol/mol
1 nmol/mol
2 nmol/mol
5 nmol/mol
0.1 km
2 km
4 km
60 min
12 h
3 d
24 h
7 d
14 d
Global firm 2021-12-09 GAW Expert Team on Atmospheric Composition Network Design and Evolution
887 CH4 column average dry air mixing ratio Climate Monitoring (GCOS) Global firm AOPC