Articles | Volume 12, issue 2
https://doi.org/10.5194/amt-12-1013-2019
https://doi.org/10.5194/amt-12-1013-2019
Research article
 | 
15 Feb 2019
Research article |  | 15 Feb 2019

Correcting atmospheric CO2 and CH4 mole fractions obtained with Picarro analyzers for sensitivity of cavity pressure to water vapor

Friedemann Reum, Christoph Gerbig, Jost V. Lavric, Chris W. Rella, and Mathias Göckede

Viewed

Total article views: 4,649 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
3,188 1,324 137 4,649 847 182 190
  • HTML: 3,188
  • PDF: 1,324
  • XML: 137
  • Total: 4,649
  • Supplement: 847
  • BibTeX: 182
  • EndNote: 190
Views and downloads (calculated since 21 Aug 2018)
Cumulative views and downloads (calculated since 21 Aug 2018)

Viewed (geographical distribution)

Total article views: 4,649 (including HTML, PDF, and XML) Thereof 4,436 with geography defined and 213 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Saved (final revised paper)

Latest update: 04 Jul 2026
Download
Short summary
Atmospheric CO2 and CH4 mole fractions are often measured using greenhouse gas analyzers manufactured by Picarro, Inc. We report biases in these measurements that are related to pressure changes in the optical cavity of the analyzers and occur mainly at low water vapor mole fractions. We provide a method to correct the biases, which contributes to keeping the overall accuracy of CO2 and CH4 measurements with Picarro analyzers within the WMO interlaboratory compatibility goals.
Share