WG ACV

Ad-hoc Working Group on Atmospheric Composition Vocabulary (WG-ACV)

The goal of this group, established by the TT-WIGOSMD, is to improve the WIGOS vocabulary for atmospheric composition and make it interoperable with other vocabularies.

Members

Jörg Klausen (@joergklausen)
Gao Chen (@gaochen-larc)
Richard Eckman
Franziska Stürzl (@fstuerzl)
Markus Fiebig (@markusfiebig)
Sebastien Villaume (@sebvi)
Dagmar Kubistin (@dkubisti)
Rebecca Hornbrook (@rhornbrook)
John Nowak (@jbnowak-larc)
Charles Brock (@charlesabrock)
Ellsworth Judd Welton (@ejwelton)

Meetings

Notes from past meetings

Current Meeting

26 May 2021, 14:00 - 15:00 UTC (wrap-up for FT2021-2)

Agenda:

Welcome (5')
Approval of minutes (5')
Progress on issues
1. Ready for FT-2021-2?
  - #275 1-01-01 Addition of gas phase variables
  - #112 6-02 Sample treatment (new codelist)

Later

Presentation on GCMD

Objectives of WG-ACV

Overview

The main objective of this group is to improve the vocabulary on atmospheric composition. This vocabulary is used in the WIGOS metadata representation. The overarching objective of the WIGOS metadata standard, for which the WIGOS metadata representation provides the information model, is to 'document observations to enable adequate use'. Therefore, the WIGOS information model endeavors to capture the characteristic aspects of an observation.

Scope and specific tasks

Variables, path structures of atmospheric variables (Code table for observed variables with domain "Atmosphere": 1-01-01)
- Review existing subdomains
- Identify missing variables and suggest how they can be organized
- Provide descriptions that define the variables unambiguously
Sampling attributes and method details
- Identify the key attributes of the process of observation that determine the result

Information model of WIGOS metadata

The information of WIGOS is a profile of ISO/OGC Observations and Measurements (O&M). It models an observation as a combination of various aspects of an observation that may influence the result, combined here using an operator 'x' (the current focus of WG-ACV are the aspects marked in bold):

observation = observed variable x geometry x procedure
observed variable = domain x matrix x variable
domain = {Atmosphere|Terrestrial|Earth|Ocean|Outer Space}
matrix = the specific physical phase of interest for the observation
variable = biogeochemical species or physical quantity
geometry = {point|line|area|volume|vertical profile|total column} as defined in Geometry
procedure = sampling x processing x reporting
sampling = size cut-off x sizing methodology x pressure x temperature x humidity x wavelength/frequency
processing = sample treatment x method x method details x instrument (x operator)
method = bio/physico/chemical principle used to make the observation
method details = free text describing specifics of the method of observation
instrument = manufacturer x model x serial number
operator = an individual involved in making the observation
reporting = pressure x temperature x humidity x unit x ...