Field testing two flux footprint models
<p>A field study was undertaken to investigate the accuracy of two micrometeorological flux footprint models for calculating the gas emission rate from a synthetic 10 <span class="inline-formula">×</span> 10 m surface area source, based on the vertical flux of gas measure...
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| Main Authors: | , , , |
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| Format: | article |
| Language: | EN |
| Published: |
Copernicus Publications
2021
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| Subjects: | |
| Online Access: | https://doaj.org/article/a9fc8dd679bc4cde9648e94518eb0c3c |
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| Summary: | <p>A field study was undertaken to investigate the accuracy of two
micrometeorological flux footprint models for calculating the gas emission
rate from a synthetic 10 <span class="inline-formula">×</span> 10 m surface area source, based on the vertical
flux of gas measured at fetches of 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 59 testable 10 min observation periods were
measured over 9 d. On average, both models underestimated the actual
release rate by approximately 30 %, mostly due to large underestimates at
the larger fetches. The accuracy of the model calculations had large
period-to-period variability, and no statistical differences were observed
between the two models in terms of overall accuracy.</p> |
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