Measuring Trace Gas Emission from Multi-Distributed Sources Using Vertical Radial Plume Mapping (VRPM) and Backward Lagrangian Stochastic (bLS) Techniques
| Autor: | M. H. Johnson, Kyoung S. Ro, Patrick G. Hunt, Thomas K. Flesch |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Physics
Atmospheric Science Single area vertical radial plume mapping (VRPM) backward Lagrangian stochastic (bLS) open-path tunable diode laser absorption spectroscopy multi-distributed sources business.industry Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Cosmology and Extragalactic Astrophysics lcsh:QC851-999 Environmental Science (miscellaneous) Computational physics Trace gas Plume symbols.namesake Optics symbols Dual source lcsh:Meteorology. Climatology Point (geometry) business Astrophysics::Galaxy Astrophysics Lagrangian |
| Zdroj: | Atmosphere; Volume 2; Issue 3; Pages: 553-566 Atmosphere, Vol 2, Iss 3, Pp 553-566 (2011) |
| ISSN: | 2073-4433 |
| Popis: | Two micrometeorological techniques for measuring trace gas emission rates from distributed area sources were evaluated using a variety of synthetic area sources. The vertical radial plume mapping (VRPM) and the backward Lagrangian stochastic (bLS) techniques with an open-path optical spectroscopic sensor were evaluated for relative accuracy for multiple emission-source and sensor configurations. The relative accuracy was calculated by dividing the measured emission rate by the actual emission rate; thus, a relative accuracy of 1.0 represents a perfect measure. For a single area emission source, the VRPM technique yielded a somewhat high relative accuracy of 1.38 ± 0.28. The bLS technique resulted in a relative accuracy close to unity, 0.98 ± 0.24. Relative accuracies for dual source emissions for the VRPM and bLS techniques were somewhat similar to single source emissions, 1.23 ± 0.17 and 0.94 ± 0.24, respectively. When the bLS technique was used with vertical point concentrations, the relative accuracy was unacceptably low |
| Databáze: | OpenAIRE |
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