WMO OSCAR | Details for Variable: O3 mole fraction

Variable: O3 mole fraction

Definition

Full name	O3 mole fraction
Definition	3D field of amount of O₃ (Ozone, expressed in moles) in the troposphere divided by the total amount of all constituents in dry air (also expressed in moles)
Measuring Units	%	Uncertainty Units	%
Horizontal Res Units	km	Vertical Res Units	m
Stability Units	% (Stability /decade)

Comment:
Last modified:	2022-05-19
Applied in OSCAR/Space Gap Analysis:	No

Classification

Domain: Atmosphere
- Sub-domain: Atmospheric chemistry
  - Variable: O3 mole fraction
    - Measured in Layers:
      - TC
      - TrC
      - MUS
      - UTLS
      - FT
      - PBL
      - Near Surface

Cross-cutting themes:

Earth System Application Categories and its related Application Areas:
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications

Requirements defined for O3 mole fraction (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, threshold orange
Application-dependent Technical Priority (ATP) Magenta and Relative priority of the attributes Red

Id	Variable	Layer	App Area	ATP	Uncertainty	Stability / decade	Hor Res	Ver Res	Obs Cyc	Timeliness	Coverage	Conf Level	Val Date	Source	General Comment	Observation Comment
910	O3 mole fraction	Near Surface	2.7 Atmospheric Composition Information Services in Urban and Populated Areas		2 % 4 % 10 %		1 km 2 km 5 km		60 sec 10 min 60 min	10 min 30 min 3 h	Local	firm	2022-01-05	GAW Expert Team on Atmospheric Composition Network Design and Evolution	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.
1010	O3 mole fraction	FT	2.5 Atmospheric Climate Monitoring	0.5	2 % 5 % 10 % 0.5	1 % 2 % 3 % 0.5	1 km 20 km 100 km 0.5	1000 m 3000 m 5000 m 0.5	60 min 6 h 30 d 0.5	60 min 24 h 30 d 0.5	Global	firm	2023-05-03	GCOS-245: The 2022 ECVs Requirements (GCOS-245)	Requirements for uncertainty are at 2-sigma	Goal for uncertainty less than 1%
1012	O3 mole fraction	UTLS	2.5 Atmospheric Climate Monitoring	0.5	2 % 5 % 10 % 0.5	1 % 2 % 3 % 0.5	10 km 50 km 200 km 0.5	500 m 1000 m 3000 m 0.5	6 h 24 h 30 d 0.5	6 h 24 h 30 d 0.5	Global	firm	2023-05-03	GCOS-245: The 2022 ECVs Requirements (GCOS-245)	Requirements for uncertainty at 2-sigma
1013	O3 mole fraction	MUS	2.5 Atmospheric Climate Monitoring	0.5	5 % 10 % 15 % 0.5	1 % 2 % 3 % 0.5	20 km 100 km 500 km 0.5	1000 m 3000 m 10000 m 0.5	6 h 24 h 30 d 0.5	4 h 24 h 30 d 0.5	Global	firm	2023-05-03	GCOS-245: The 2022 ECVs Requirements (GCOS-245)	Requirements for uncertainty at 2-sigma