Ammonia Emissions Measured Using Two Different GasFinder Open-Path Lasers
The challenges of accurately measuring in situ ammonia (NH<sub>3</sub>) losses from agricultural systems are well known. Using an open path laser coupled with a backward Lagrangian stochastic dispersion model is a promising approach for quantifying both point- and area-sources; however,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/10/5/261 |
| _version_ | 1818288360296284160 |
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| author | Hambaliou Baldé Andrew VanderZaag Ward Smith Raymond L. Desjardins |
| author_facet | Hambaliou Baldé Andrew VanderZaag Ward Smith Raymond L. Desjardins |
| author_sort | Hambaliou Baldé |
| collection | DOAJ |
| description | The challenges of accurately measuring in situ ammonia (NH<sub>3</sub>) losses from agricultural systems are well known. Using an open path laser coupled with a backward Lagrangian stochastic dispersion model is a promising approach for quantifying both point- and area-sources; however, this approach requires the open path laser to detect low NH<sub>3</sub> concentrations and small concentration differences. In this study, we compared the new GasFinder3 open path laser (Boreal laser Inc., Edmonton, Canada) with the GasFinder2 sensor, the previous version. The study took place at two locations: an outdoor open-air manure compost site, and a field of wheat stubble which was fertilized with urea ammonium nitrate. Results showed the two lasers reported similar concentrations during three days of measurements at the compost site, but differed at the field site, where concentrations were close to the minimum detection limit. The GasFinder3 had a lower standard deviation under all conditions, especially with low wind speed and high relative humidity. |
| first_indexed | 2024-12-13T01:55:09Z |
| format | Article |
| id | doaj.art-3d025412f9544fb0989784546dd89f69 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-13T01:55:09Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-3d025412f9544fb0989784546dd89f692022-12-22T00:03:25ZengMDPI AGAtmosphere2073-44332019-05-0110526110.3390/atmos10050261atmos10050261Ammonia Emissions Measured Using Two Different GasFinder Open-Path LasersHambaliou Baldé0Andrew VanderZaag1Ward Smith2Raymond L. Desjardins3Agriculture and Agri-Food Canada, Ottawa, ON K1A0C6, CanadaAgriculture and Agri-Food Canada, Ottawa, ON K1A0C6, CanadaAgriculture and Agri-Food Canada, Ottawa, ON K1A0C6, CanadaAgriculture and Agri-Food Canada, Ottawa, ON K1A0C6, CanadaThe challenges of accurately measuring in situ ammonia (NH<sub>3</sub>) losses from agricultural systems are well known. Using an open path laser coupled with a backward Lagrangian stochastic dispersion model is a promising approach for quantifying both point- and area-sources; however, this approach requires the open path laser to detect low NH<sub>3</sub> concentrations and small concentration differences. In this study, we compared the new GasFinder3 open path laser (Boreal laser Inc., Edmonton, Canada) with the GasFinder2 sensor, the previous version. The study took place at two locations: an outdoor open-air manure compost site, and a field of wheat stubble which was fertilized with urea ammonium nitrate. Results showed the two lasers reported similar concentrations during three days of measurements at the compost site, but differed at the field site, where concentrations were close to the minimum detection limit. The GasFinder3 had a lower standard deviation under all conditions, especially with low wind speed and high relative humidity.https://www.mdpi.com/2073-4433/10/5/261open path laserGasFinder2GasFinder3low ammonia concentrations and emissionsmanure compost windrowsfertilizer applicationbackward Lagrangian stochastic model |
| spellingShingle | Hambaliou Baldé Andrew VanderZaag Ward Smith Raymond L. Desjardins Ammonia Emissions Measured Using Two Different GasFinder Open-Path Lasers Atmosphere open path laser GasFinder2 GasFinder3 low ammonia concentrations and emissions manure compost windrows fertilizer application backward Lagrangian stochastic model |
| title | Ammonia Emissions Measured Using Two Different GasFinder Open-Path Lasers |
| title_full | Ammonia Emissions Measured Using Two Different GasFinder Open-Path Lasers |
| title_fullStr | Ammonia Emissions Measured Using Two Different GasFinder Open-Path Lasers |
| title_full_unstemmed | Ammonia Emissions Measured Using Two Different GasFinder Open-Path Lasers |
| title_short | Ammonia Emissions Measured Using Two Different GasFinder Open-Path Lasers |
| title_sort | ammonia emissions measured using two different gasfinder open path lasers |
| topic | open path laser GasFinder2 GasFinder3 low ammonia concentrations and emissions manure compost windrows fertilizer application backward Lagrangian stochastic model |
| url | https://www.mdpi.com/2073-4433/10/5/261 |
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