BackForward Variable: CH4 Mole fraction (BG)

Definition
Full name CH4 Mole fraction (BG)
Definition 3D field of amount of  background (BG) CH4 (Carbon Dioxide, expressed in moles) divided by the total amount of all constituents in dry air (also expressed in moles)
Measuring Units ppb Uncertainty Units ppb
Horizontal Res Units km Vertical Res Units km
Stability Units ppb (Stability /decade)

 

Comment: BG (background) refers to measurements made in remote areas far away from pollution
Last modified: 2021-12-03
Applied in OSCAR/Space Gap Analysis: No
Classification
  • Domain: Atmosphere
    • Sub-domain: Atmospheric chemistry
      • Variable: CH4 Mole fraction (BG)
        • Measured in Layers:
          • TC
          • TrC
          • MUS
          • UTLS
          • FT
          • PBL
          • Near Surface
          • Cloud-top
          • TOA
  • Cross-cutting themes:

Requirements defined for CH4 Mole fraction (BG)  (2)

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
880 CH4 Mole fraction (BG) UTLS
FT
PBL
Near Surface 		Forecasting Atmospheric Composition 1 ppb
2 ppb
5 ppb 		1 ppb
2 ppb
5 ppb 		500 km
1000 km
2000 km 		0.5 km
1 km
3 km 		60 min
24 h
7 d 		24 h
30 d
182 d 		Global firm 2022-01-05 GAW Expert Team on Atmospheric Composition Network Design and Evolution
881 CH4 Mole fraction (BG) UTLS
FT
PBL
Near Surface 		Monitoring Atmospheric Composition 1 ppb
2 ppb
5 ppb 		1 ppb
2 ppb
5 ppb 		500 km
1000 km
2000 km 		0.5 km
1 km
3 km 		60 min
24 h
7 d 		24 h
3 d
182 d 		Global firm 2022-01-05 GAW Expert Team on Atmospheric Composition Network Design and Evolution