Intercontinental transport of biomass burning pollutants over the
Mediterranean Basin during the summer 2014 ChArMEx-GLAM
airborne campaign

Krysztofiak-Tong, Gisèle; Brocchi, Vanessa; Catoire, Valéry; Guth, Jonathan; Marécal, Virginie; Zbinden, R.; Amraoui, L. El; Dulac, François; Ricaud, Philippe

doi:10.5194/acp-2017-732

Cited by 4 publications

(5 citation statements)

References 39 publications

(60 reference statements)

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“…daytime NO 3 concentrations reported to be ~ 1 ppt (2.5´10 7 molecules cm -3 ) (Brown and Stutz, 2012). The relatively large rate coefficient reported here for 5-methyl-2(3H)-furanone, suggests that NO 3 reaction will be an important sink for unsaturated nonconjugated cyclic esters.…”

Section: Atmospheric Implicationsmentioning

confidence: 57%

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Comment on acp-2021-745

Newland¹

2021

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Section: Atmospheric Implicationsmentioning

confidence: 57%

“…Such plumes can extend over hundreds of kilometres and hence affect air quality on a local and regional scale (e.g. Andreae et al, 1988;Brocchi et al, 2018;Johnson et al, 2021). Domestic wood burning is an increasing trend in northern European cities (Chafe et al, 2015).…”

Section: Atmospheric Implicationsmentioning

confidence: 99%

Comment on acp-2021-745

Newland¹

2021

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“…Such plumes can extend over hundreds of kilometres and, hence, affect air quality on a local and regional scale (e.g. Andreae et al, 1988;Brocchi et al, 2018;Johnson et al, 2021). Domestic wood burning is an increasing trend in northern European cities (Chafe et al, 2015).…”

Section: Atmospheric Implicationsmentioning

confidence: 99%

NO<sub>3</sub> chemistry of wildfire emissions: a kinetic study of the gas-phase reactions of furans with the NO<sub>3</sub> radical

et al. 2022

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Abstract. Furans are emitted to the atmosphere during biomass burning from the pyrolysis of cellulose. They are one of the major contributing volatile organic compound (VOC) classes to OH and NO3 reactivity in biomass burning plumes. The major removal process of furans from the atmosphere at night is reaction with the nitrate radical, NO3. Here, we report a series of relative rate experiments in the 7300 L indoor simulation chamber at Institut de Combustion Aérothermique Réactivité et Environnement, Centre national de la recherche scientifique (ICARE-CNRS), Orléans, using a number of different reference compounds to determine NO3 reaction rate coefficients for four furans, two furanones, and pyrrole. In the case of the two furanones, this is the first time that NO3 rate coefficients have been reported. The recommended values (cm3 molec.−1 s−1) are as follows: furan, (1.49 ± 0.23) × 10−12; 2-methylfuran, (2.26 ± 0.52) × 10−11; 2,5-dimethylfuran, (1.02 ± 0.31) × 10−10; furfural (furan-2-aldehyde), (9.07 ± 2.3) × 10−14; α-angelicalactone (5-methyl-2(3H)-furanone), (3.01 ± 0.45) × 10−12; γ-crotonolactone (2(5H)-furanone), <1.4 × 10−16; and pyrrole, (6.94 ± 1.9) × 10−11. The furfural + NO3 reaction rate coefficient is found to be an order of magnitude smaller than previously reported. These experiments show that for furan, alkyl-substituted furans, α-angelicalactone, and pyrrole, reaction with NO3 will be the dominant removal process at night and may also contribute during the day. For γ-crotonolactone, reaction with NO3 is not an important atmospheric sink.

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“…In 2019 and 2020, severe BB events damaged ecosystems, buildings, and air quality in the Amazon basin, Australia, and the United States (Hirsch & Koren, 2021; Kganyago & Shikwambana, 2020). Particulate BB emissions have been detected across the globe, including North America (Hecobian et al., 2011; Hudson et al., 2004), the remote troposphere (Brocchi et al., 2018; Hodzic et al., 2020; Schill et al., 2020), and the Arctic (Adachi et al., 2021; Brock et al., 2011). BB events have been an important factor influencing global climate since before the industrial revolution.…”

Section: Introductionmentioning

confidence: 99%

Fine Ash‐Bearing Particles as a Major Aerosol Component in Biomass Burning Smoke

et al. 2022

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Biomass burning (BB) events are occurring globally with increasing frequency, and their emissions are having more impacts on human health and climate. Large ash particles are recognized as a BB product with major influences on soil and water environments. However, fine-ash particles, which have diameters smaller than several microns and characteristic morphologies and compositions (mainly Ca and Mg carbonates), have not yet been explicitly considered as a major BB aerosol component either in field observations or climate models. This study measured BB aerosol samples using transmission electron microscopy (TEM) and ion chromatography during the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) campaign. We show that significant amounts of fine ash-bearing particles are transported >100 km from their fire sources. Our environmental chamber experiments suggest that they can act as cloud condensation and ice nuclei. We also found considerable amounts of fine ash-bearing particles in the TEM samples collected during previous campaigns (Biomass Burning Observation Project and Megacity Initiative: Local and Global Research Observations). These ash particles are commonly mixed with organic matter and make up ∼8% and 5% of BB smoke by number and mass, respectively, in samples collected during the FIREX-AQ campaign. The measured ash-mass concentrations are approximately five times and six times greater than those of BB black carbon and potassium, respectively, scaling to an estimated global emission of 11.6 Tg yr −1 with a range of 8.8-16.3 Tg yr −1 . Better characterization and constraints on these fine ash-bearing particles will improve BB aerosol measurements and strengthen assessments of BB impacts on human health and climate.Plain Language Summary Biomass burning (BB) events occur globally and impact climate and human health. Ash particles larger than ∼10 μm are well known as the main products of BB that contaminate the soil and water near the source regions. On the other hand, ash particles having diameters smaller than several microns, which are inhalable and can be transported long distances, are not yet recognized as a major aerosol component of BB smoke. This study reveals that such fine ash-bearing particles are abundant in number (∼8%) and mass (∼5%) within BB smoke. The global emission of fine ash particles is estimated to be 11.6 Tg yr −1 with a range of 8.8-16.3 Tg yr −1 . By considering their abundance and properties, we will strengthen assessments of BB impacts on human health and climate.

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Intercontinental transport of biomass burning pollutants over the Mediterranean Basin during the summer 2014 ChArMEx-GLAM airborne campaign

Cited by 4 publications

References 39 publications

Comment on acp-2021-745

Comment on acp-2021-745

NO<sub>3</sub> chemistry of wildfire emissions: a kinetic study of the gas-phase reactions of furans with the NO<sub>3</sub> radical

Fine Ash‐Bearing Particles as a Major Aerosol Component in Biomass Burning Smoke

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Intercontinental transport of biomass burning pollutants over the Mediterranean Basin during the summer 2014 ChArMEx-GLAM airborne campaign

Cited by 4 publications

References 39 publications

Comment on acp-2021-745

Comment on acp-2021-745

NO&lt;sub&gt;3&lt;/sub&gt; chemistry of wildfire emissions: a kinetic study of the gas-phase reactions of furans with the NO&lt;sub&gt;3&lt;/sub&gt; radical

Fine Ash‐Bearing Particles as a Major Aerosol Component in Biomass Burning Smoke

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NO<sub>3</sub> chemistry of wildfire emissions: a kinetic study of the gas-phase reactions of furans with the NO<sub>3</sub> radical