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: 3,177 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
2,136 964 77 3,177 675 91 88
  • HTML: 2,136
  • PDF: 964
  • XML: 77
  • Total: 3,177
  • Supplement: 675
  • BibTeX: 91
  • EndNote: 88
Views and downloads (calculated since 21 Aug 2018)
Cumulative views and downloads (calculated since 21 Aug 2018)

Viewed (geographical distribution)

Total article views: 3,177 (including HTML, PDF, and XML) Thereof 2,956 with geography defined and 221 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 29 Jun 2024
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.