Data · dataset · 2026
Application of a differential fuel-cell analyzer for measuring atmospheric oxygen variations
Listed in National Center for Atmospheric Research
A commercially available differential fuel-cell analyzer has been adapted to make field-based ppm-level measurements of atmospheric Oâ variations.
Description
With the implementation of rapid calibrations and active pressure and flow control, the analysis system described here has a 1Ï precision of ±2.5 per meg (â0.5 ppm) for a 2-min measurement. Allowing for system stabilization after switching inlet lines, a 6-min measurement with a precision of ±1.4 per meg (â0.3 ppm) every 20 min is obtained.
The elimination of biases in any atmospheric Oâ measurement depends critically on careful gas-handling procedures, and after screening for known sources of bias a comparability of ±10 per meg (â2 ppm) with the present setup is estimated. In comparison to existing techniques, the relatively small size, low cost, fast response, motion insensitivity, and ease of implementation of the fuel-cell analyzer make it particularly useful for a wide range of unattended field applications.
Read the rest (2 more)
This system has been used to measure atmospheric Oâ concentrations at the WLEF tall-tower research site in northern Wisconsin semicontinuously from June 2000 to December 2003. These measurements represent the first extended Oâ record in and above a forest ecosystem, and are being used to investigate global carbon budgeting, plant physiology, continental boundary layer mixing and synoptic transport, and potential means of industrial emission verification.
In this paper, the measurement technique is described in detail and several weeks of data are presented to illustrate its performance.
Links
Get the data
- Publisher page n2t.org/ark:/85065/d7ns0v43 ↗
documentation · download · from data ucar edu
Where it is published
- data.ucar.edu /dataset/application-of-a-differential-fuel-cell-analyzer-for-m… ↗
National Center for Atmospheric Research dataset page
landing page · from data ucar edu
Catalogue records · 1
- CKAN API data.ucar.edu/api/3/action/package_show?id=c61d0330-a96c-41e7-837c-ce7b8e6b6… ↗
metadata API · from data ucar edu
Topics
- From keywords
- Earth & Environmental Science · Ocean & Atmospheric Science
- Inferred from text
- Atmospheric sciences 70%
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| National Center for Atmospheric Research | c61d0330-a96c-41e7-837c-ce7b8e6b629c | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:3701 | enrichment · data ucar edu | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[field].local:field:earth-environmental | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| created_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| description | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /notes |
| publication_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 | |
| title | source · data ucar edu | connector:data_ucar_edu@1.0.0 | /title |
| updated_date | source · data ucar edu | connector:data_ucar_edu@1.0.0 |