Requirement #910 


For variable: O3 mole fraction

In application: Providing Atmospheric Composition information to support services in urban and populated areas

Goal Breakthrough Threshold
Uncertainty 2 % 4 % 10 %
Stability/decade (if applicable)
Horizontal Resolution 1 km 2 km 5 km
Vertical Resolution
Observing Cycle 60 sec 10 min 60 min
Timeliness 10 min 30 min 3 h


Validated: 1/5/22 Source: GAW Expert Team on Atmospheric Composition Network Design and Evolution
Comment: Ref: Cooper, O, et al., 2014, Elem Sci Anth, 2:29, DOI:https://10.12952/journal.elementa.000031. Uncertainties are provided as 2 sigma. They represent the sum of random and systematic error. Confidence: firm
Def: :Result of impact studies of actual data used in actual applications of numerical or conceptual models
  • Domain: Atmosphere
    • Subdomain: Atmospheric chemistry
      • Variable: O3 mole fraction
        • Applicable (vertical) layers:
          • Near Surface
        • Horizontal Coverage: Local