Preprints
https://doi.org/10.5194/amt-2021-106
https://doi.org/10.5194/amt-2021-106

  21 Jun 2021

21 Jun 2021

Review status: this preprint is currently under review for the journal AMT.

Field Testing Two Flux Footprint Models

Trevor W. Coates1, Monzurul Alam2, Thomas K. Flesch3, and Guillermo Hernandez-Ramirez2 Trevor W. Coates et al.
  • 1Agriculture and Agri-Food Canada, Lethbridge, Canada, T1J 4B1
  • 2Department of Renewable Resources, University of Alberta, Edmonton, Canada T6G 2E3
  • 3Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Canada T6G 2E3

Abstract. A field study was undertaken to investigate the accuracy of two micrometeorological flux footprint models when calculating the gas emission rate from a 10 × 10 m synthetic surface area source, based on the vertical flux of gas measured 15 to 50 m downwind of the source. Calculations were made with an easy-to-use tool based on the Kormann-Meixner analytical model and with a more sophisticated Lagrangian stochastic dispersion model. A total of 323 10 minute observation periods were measured over 9 days. On average, each of the two models calculated the emission rate to within 10 % of the actual release rate. No clear differences were observed between the two models in terms of overall accuracy.

Trevor W. Coates et al.

Status: open (until 16 Aug 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-106', Albrecht Neftel, 12 Jul 2021 reply

Trevor W. Coates et al.

Trevor W. Coates et al.

Viewed

Total article views: 218 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
178 35 5 218 16 1 5
  • HTML: 178
  • PDF: 35
  • XML: 5
  • Total: 218
  • Supplement: 16
  • BibTeX: 1
  • EndNote: 5
Views and downloads (calculated since 21 Jun 2021)
Cumulative views and downloads (calculated since 21 Jun 2021)

Viewed (geographical distribution)

Total article views: 203 (including HTML, PDF, and XML) Thereof 203 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 29 Jul 2021
Download
Short summary
A field study investigated the accuracy of two footprint models for calculating surface emission rates from eddy covariance flux measurements. Emissions from a 10 × 10 m synthetic source were estimated with a Kormann-Meixner analytical model and a more sophisticated Lagrangian stochastic model, based on a downwind measured flux. Each model calculated average emission rates within 10 % of the actual rate. Footprint models are critically important for interpreting eddy covariance measurements.