Terpene Composition Complexity Controls Secondary Organic Aerosol Yields from Scots Pine Volatile Emissions

Faiola, Celia; Buchholz, Angela; Kari, Eetu; Yli‐Pirilä, Pasi; Holopainen, Jarmo K.; Kivimäenpää, Minna; Miettinen, Pasi; Worsnop, Douglas R.; Lehtinen, K. E. J.; Guenther, Alex; Virtanen, Annele

doi:10.1038/s41598-018-21045-1

Cited by 61 publications

(90 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The known OH reactivity for pine emissions is dominated by monoterpenes with a small fraction of sesquiterpenes as expected from earlier studies (Tarvainen et al, 2005;Hakola et al, 2006;Yassaa et al, 2012;Bäck et al, 2012;Faiola et al, 2018).…”

Section: Pinesupporting

confidence: 75%

OH reactivity from different tree species: Investigating the missing reactivity in a boreal forest

Praplan

Tykkä

Schallhart

et al. 2020

Preprint

View full text Add to dashboard Cite

In forested area, a large fraction of total hydroxyl radical (OH) reactivity remain unaccounted for. Very few studies have been looking at total OH reactivity from biogenic emissions and its variations. In the present study, we investigate the total OH reactivity from three common boreal tree species (Scots pine, Norway spruce, and Downy birch), by comparing it with the calculated reactivity from the chemically identified emissions. Total OH reactivity was measured using the Comparative 5 Reactivity Method (CRM), and the chemical composition of the emissions was quantified with two gas chromatographs coupled to mass spectrometers (GC-MSs). Dynamic branch enclosures were used and emissions from one branch of a tree at the time were measured by rotating between them periodically.Results show that birch had the highest values of total OH reactivity of the emissions (TOHRE), while pine had the lowest.The main drivers for the known reactivity of pine and spruce were monoterpenes and sesquiterpenes. For birch, emissions were 10 dominated by sesquiterpenes, even though monoterpenes and GLVs could be found too. However, calculated reactivity values remained low leading to the highest missing fraction of reactivity (>96 %), while pine and spruce had similar missing reactivity fractions between 56 % and 82 % (higher in the spring and decreasing as the summer proceeded). The high average values were driven by low reactivity periods and the fraction of missing reactivity got smaller for pine and spruce when the TOHRE values increased. Important exceptions were identified for periods when the emission profiles changed from terpenes to Green Leaf 15 Volatiles (GLVs), a family of compounds containing a 6 carbon atoms backbone with various functionalities (e.g. alcohols, aldehydes, esters) that indicate that the plant is suffering from stress. Then, very high TOHRE values were measured and the missing fraction remained high.This study found a different trend in the missing OHRE fraction of Norway spruce from spring to autumn compared to one previous study (Nölscher et al., 2013), which indicates that additional studies are required to fully understand the complexity 20 of biogenic reactive emissions. Future studies of boreal trees in situ should be conducted to confirm the findings presented.

show abstract

Section: Pinesupporting

confidence: 75%

OH reactivity from different tree species: Investigating the missing reactivity in a boreal forest

Praplan

Tykkä

Schallhart

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Additionally, using monoterpene-specific SOA yields where available resulted in SOA predictions ∼1.5−2.5× higher than applying the α-pinene SOA yield to all measured monoterpenes (as is conventional in many model representations of SOA formation from monoterpenes; Figure 1d), in general agreement with similar analysis of monoterpenes emitted from stressed Scots pine. 38 Although the contribution of terpenoids to SOA production in smoke from wildland fires remains largely unquantified, these results illustrate that chemically speciating such emissions will be essential for fully and accurately elucidating their chemistry.…”

Section: ■ Implicationsmentioning

confidence: 99%

“…For example, one recent study found that accounting for monoterpene complexity in Scots pine (Pinus sylvestris) emissions led to 1.5−2.3× higher predicted SOA formation than assuming α-pinene as a single, representative surrogate compound. 38 Heating of vegetation causes substantial release of resin constituents via distillation out of storage ducts/glands, 39−44 demonstrating the potential for high emissions of terpenoids during vegetation fires of resinous fuels. Although a few studies have observed high total terpenoid emissions from wildland fires, 45−47 there have been relatively few measurements of speciated terpenoid emissions.…”

Section: ■ Introductionmentioning

confidence: 99%

Highly Speciated Measurements of Terpenoids Emitted from Laboratory and Mixed-Conifer Forest Prescribed Fires

Hatch

Jen

Kreisberg

et al. 2019

Environ. Sci. Technol.

View full text Add to dashboard Cite

Wildland fires in the western United States are projected to increase in frequency, duration, and size. Characterized by widespread and diverse conifer forests, burning within this region may lead to significant terpenoid emissions. Terpenoids constitute a major class of highly reactive secondary organic aerosol (SOA) precursors, with significant structure-dependent variability in reactivity and SOA-formation potential. In this study, highly speciated measurements of terpenoids emitted from laboratory and prescribed fires were achieved using two-dimensional gas chromatography. Nearly 100 terpenoids were measured in smoke samples from 71 fires, with high variability in the dominant compounds. Terpenoid emissions were dependent on plant species and tissues. Canopy/needle-derived emissions dominated in the laboratory fires, whereas woody-tissue-derived emissions dominated in the prescribed fires. Such differences likely have implications for terpenoid emissions from high vs low intensity fires and suggest that canopy-dominant laboratory fires may not accurately represent terpenoid emissions from prescribed fires or wildland fires that burn with low intensity. Predicted SOA formation was sensitive to the diversity of emitted terpenoids when compared to assuming a single terpene surrogate. Given the demonstrated linkages between fuel type, fire terpenoid emissions, and the subsequent implications for plume chemistry, speciated measurements of terpenoids in smoke derived from diverse ecosystems and fire regimes may improve air quality predictions downwind of wildland fires.

show abstract

“…MTs can have relatively high concentrations in conifer root tissues while emissions are rather low (Lin et al 2007). Reason for this could be that MTs are reactive, rapidly degrade in the air (Faiola et al 2018), adsorb on various surfaces (Schaub et al 2010) or diffuse in soil water (Hiltpold and Turlings 2008). Therefore, a considerable proportion of volatile isoprenoids existing in the rhizosphere may not diffuse from the soil to the atmosphere (Lin et al 2007).…”

Section: Bvocs Of Rhizosphere Litter and Understorymentioning

confidence: 99%

Unravelling the functions of biogenic volatiles in boreal and temperate forest ecosystems

et al. 2019

Self Cite

View full text Add to dashboard Cite

Living trees are the main source of biogenic volatile organic compounds (BVOCs) in forest ecosystems, but substantial emissions originate from leaf and wood litter, the rhizosphere and from microorganisms. This review focuses on temperate and boreal forest ecosystems and the roles of BVOCs in ecosystem function, from the leaf to the forest canopy and from the forest soil to the atmosphere level. Moreover, emphasis is given to the question of how BVOCs will help forests adapt to environmental stress, particularly biotic stress related to climate change. Trees use their vascular system and emissions of BVOCs in internal communication, but emitted BVOCs have extended the communication to tree population and whole community levels and beyond. Future forestry practices should consider the importance of BVOCs in attraction and repulsion of attacking bark beetles, but also take an advantage of herbivore-induced BVOCs to improve the efficiency of natural enemies of herbivores. BVOCs are extensively involved in ecosystem services provided by forests including the positive effects on human health. BVOCs have a key role in ozone formation but also in ozone quenching. Oxidation products form secondary organic aerosols that disperse sunlight deeper into the forest canopy, and affect cloud formation and ultimately the climate. We also discuss the technical side of reliable BVOC sampling of forest trees for future interdisciplinary studies that should bridge the gaps between the forest sciences, health sciences, chemical ecology, conservation biology, tree physiology and atmospheric science.

show abstract

Terpene Composition Complexity Controls Secondary Organic Aerosol Yields from Scots Pine Volatile Emissions

Cited by 61 publications

References 55 publications

OH reactivity from different tree species: Investigating the missing reactivity in a boreal forest

OH reactivity from different tree species: Investigating the missing reactivity in a boreal forest

Highly Speciated Measurements of Terpenoids Emitted from Laboratory and Mixed-Conifer Forest Prescribed Fires

Unravelling the functions of biogenic volatiles in boreal and temperate forest ecosystems

Contact Info

Product

Resources

About