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Título:
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Polarization lidar detection of agricultural aerosol emissions
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Autor/a:
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Gregorio López, Eduard; Gené Mola, Jordi; Sanz Cortiella, Ricardo; Rocadenbosch Burillo, Francesc; Chueca Adell, Patricia; Arnó Satorra, Jaume; Solanelles Batlle, Francesc; Rosell Polo, Joan Ramon
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Notas:
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Agricultural aerosol emissions can significantly impact human and animal health as well as the environment. Therefore, it is essential to adopt new sensing techniques for real-time monitoring these emissions in high temporal and spatial resolution. In recent years, light detection and ranging (lidar) technology has been used for measuring the particulate matter emitted from agricultural operations. However, conventional nonpolarized lidar systems cannot discriminate between different types of aerosols, which can lead to misinterpretation of the results. To overcome this limitation, this study applies the polarization lidar technique to monitor agricultural aerosols. A 355 nm polarization lidar system was used to measure the emissions generated during pesticide spraying operations. The results showed that depolarization ratios due to field dust (0.220-0.268) and to road dust (0.385) are clearly higher than those caused by pesticide spray drift (0.028-0.043) or by diesel exhaust (0.099), which can be used to differentiate each type of aerosol. These results support the development of new polarization lidar systems specifically designed to study the impact of agricultural activities on air quality.
This research was partially funded by the Spanish Ministry of Economy and Competitiveness (projects AGL2007-66093-C04-03, AGL2010-22304-04-C03-03, and AGL2013-48297-C2-2-R) and EU FEDER. Secretaria d’Universitats i Recerca del Departament d’Economia i Coneixement de la Generalitat de Catalunya and the Spanish Ministry of Education are thanked for Mr. Jordi Gené’s predoctoral fellowships (2016FI_B 00669 and FPU15/03355). The authors would like to thank the Institut de Recerca i Tecnologia Agroalimentàries for allowing the use of their experimental fields. The authors also wish to thank F. Camp, A. Escolà, C. Garcerá, F. Gràcia, J. Masip, E. Moltó, I. del Moral, and R. Viana for their assistance in the field work. X. Torrent and S. Planas are also thanked for the nozzle characterization with the PDA. F. Marenco (Met Office, UK) and P. Chazette (LSCE-IPLS, France) are acknowledged for their fruitful comments about lidar calibration. |
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Materia(s):
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-Sensores LIDAR
-Fitosanitarios
-Laser Measurements |
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Derechos:
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cc-by (c) Gregorio et al., 2018
https://creativecommons.org/licenses/by/4.0/
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Tipo de documento:
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Artículo
Artículo - Versión publicada |
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Editor:
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Hindawi Publishing Corporation
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