Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodology
<p>The methodology of analysing the biomass burning events recorded in the database of the European Aerosol Research Lidar Network in the framework of the Aerosol, Clouds and Trace Gases Research Infrastructure is presented. The period of 2008–2017 was chosen to analyse all of the events store...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-11-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/20/13905/2020/acp-20-13905-2020.pdf |
| _version_ | 1818404254238375936 |
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| author | M. Adam D. Nicolae I. S. Stachlewska A. Papayannis D. Balis |
| author_facet | M. Adam D. Nicolae I. S. Stachlewska A. Papayannis D. Balis |
| author_sort | M. Adam |
| collection | DOAJ |
| description | <p>The methodology of analysing the biomass burning events
recorded in the database of the European Aerosol Research Lidar Network in
the framework of the Aerosol, Clouds and Trace Gases Research Infrastructure is presented. The period of 2008–2017 was chosen to analyse all of the events stored in the database under the Forest Fire category for a total of 14 stations available. The data provided ranged from complete datasets (particle backscatter, extinction and linear depolarization ratio profiles)
to single profiles (particle backscatter coefficient profile). Smoke layers
geometry was evaluated and the mean optical properties within each layer
were computed. The back-trajectory technique was used to double-check the source of all pollution layers. The biomass burning layers were identified by taking into account the presence of the fires along the back trajectory. The
biomass burning events are analysed by the means of the intensive
parameters. The analysis was structured in three directions: (I) common
biomass burning source (fire) recorded by at least two stations, (II) long-range transport from North America, and (III) analysis over four geographical regions (south-eastern Europe, north-eastern Europe, central Europe,
and south-western Europe). Based on back-trajectory calculations and fire locations, the lidar measurements can be labelled either as measurements of
a “single fire” or “mixed fires” (case I), measurements of North American fires, or measurements of mixed North American and local fires (case II). The
histogram of the fire locations reveals the smoke sources for each region. For each region, statistics on intensive parameters are performed. The
source origin of the intensive parameters is categorized based on the continental origin of the air mass (European, African, Asian, North American,
or a combination of them). The methodology presented here is meant to
provide a perspective to explore a large number of lidar data and deliver novel approaches to analyse the intensive parameters based on the assigned
biomass burning sources. A thorough consideration of all potential fire sources reveals that most of the time the lidar measurements characterize
the smoke from a mixture of fires. A comprehensive discussion of all the results (based on the intensive parameters and the source locations) will
be given in a companion paper submitted to the ACP EARLINET special issue.</p> |
| first_indexed | 2024-12-14T08:37:14Z |
| format | Article |
| id | doaj.art-f2fa040a419c415799a097da1fcfde55 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-14T08:37:14Z |
| publishDate | 2020-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-f2fa040a419c415799a097da1fcfde552022-12-21T23:09:24ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242020-11-0120139051392710.5194/acp-20-13905-2020Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodologyM. Adam0D. Nicolae1I. S. Stachlewska2A. Papayannis3D. Balis4National Institute for R&D in Optoelectronics, Magurele, 077225, RomaniaNational Institute for R&D in Optoelectronics, Magurele, 077225, RomaniaInstitute of Geophysics, Faculty of Physics, University of Warsaw, 02093, PolandNational Technical University of Athens, Department of Physics, Athens, 15780, GreeceLaboratory of Atmospheric Physics, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece<p>The methodology of analysing the biomass burning events recorded in the database of the European Aerosol Research Lidar Network in the framework of the Aerosol, Clouds and Trace Gases Research Infrastructure is presented. The period of 2008–2017 was chosen to analyse all of the events stored in the database under the Forest Fire category for a total of 14 stations available. The data provided ranged from complete datasets (particle backscatter, extinction and linear depolarization ratio profiles) to single profiles (particle backscatter coefficient profile). Smoke layers geometry was evaluated and the mean optical properties within each layer were computed. The back-trajectory technique was used to double-check the source of all pollution layers. The biomass burning layers were identified by taking into account the presence of the fires along the back trajectory. The biomass burning events are analysed by the means of the intensive parameters. The analysis was structured in three directions: (I) common biomass burning source (fire) recorded by at least two stations, (II) long-range transport from North America, and (III) analysis over four geographical regions (south-eastern Europe, north-eastern Europe, central Europe, and south-western Europe). Based on back-trajectory calculations and fire locations, the lidar measurements can be labelled either as measurements of a “single fire” or “mixed fires” (case I), measurements of North American fires, or measurements of mixed North American and local fires (case II). The histogram of the fire locations reveals the smoke sources for each region. For each region, statistics on intensive parameters are performed. The source origin of the intensive parameters is categorized based on the continental origin of the air mass (European, African, Asian, North American, or a combination of them). The methodology presented here is meant to provide a perspective to explore a large number of lidar data and deliver novel approaches to analyse the intensive parameters based on the assigned biomass burning sources. A thorough consideration of all potential fire sources reveals that most of the time the lidar measurements characterize the smoke from a mixture of fires. A comprehensive discussion of all the results (based on the intensive parameters and the source locations) will be given in a companion paper submitted to the ACP EARLINET special issue.</p>https://acp.copernicus.org/articles/20/13905/2020/acp-20-13905-2020.pdf |
| spellingShingle | M. Adam D. Nicolae I. S. Stachlewska A. Papayannis D. Balis Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodology Atmospheric Chemistry and Physics |
| title | Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodology |
| title_full | Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodology |
| title_fullStr | Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodology |
| title_full_unstemmed | Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodology |
| title_short | Biomass burning events measured by lidars in EARLINET – Part 1: Data analysis methodology |
| title_sort | biomass burning events measured by lidars in earlinet part 1 data analysis methodology |
| url | https://acp.copernicus.org/articles/20/13905/2020/acp-20-13905-2020.pdf |
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