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Showing 1 to 10 of 10 for “"BVOC"”.
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Simulating the Effects of Hydroclimate Stress on BVOC-Chemistry-Climate Interactions in NASA GISS ModelE
… a unique biogenic volatile organic carbon (BVOC) emission response during severe or prolonged drought. In the first chapter, we introduce the concept of drought and the four main types: meteorological, agricultural, hydrological, and socioeconomic. Then we expand upon how drought affects …
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Atmospheric Impact of Biogenic Volatile Organic Compounds: Improving Measurement and Modeling Capabilities
Biogenic volatile organic compounds (BVOCs) are naturally occurring organic compounds emitted by plants, trees, and ecosystems, exerting a profound influence on the Earth's atmosphere, air quality, climate, and ecosystem dynamics. This research project aims to advance our understanding of BVOC …
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Improving the understanding of the influence of emissions of biogenic volatile organic compounds on climate.
… of biogenic volatile organic compounds (BVOCs), atmospheric composition and climate is a key component of the Earth System. However, there remains uncertainty as to its magnitude and sign. An important factor is the gas phase chemistry of BVOCs since this influences atmospheric oxidising …
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Understanding the chemical impacts of biogenic volatile organic compounds and the physical drivers of their observed seasonality
… as biogenic volatile organic compounds (BVOCs), contribute 90\% to the VOC budget. Individual BVOCs vary widely in their reaction rates with atmospheric oxidants, making their atmospheric impact highly dependent on VOC composition. Their emissions are also dependent on vegetative make up …
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Studies of the interaction of biogenic volatile organic compounds and NOx in forest environments
… a greater understanding of NO<sub>x</sub> + BVOC chemistry along with their sources and sinks is needed. One large uncertainty in understanding NO<sub>x</sub> + BVOC chemistry is the production of organic nitrates (RONO<sub>2</sub>), which act as a radical termination step in the production …
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Temporal assessment of volatile organic compounds at a site with high atmospheric variability in the North–West Province
… considered. It is estimated that biogenic VOCs (BVOCs) (e.g. isoprenes, terpenes) make up 90% of the global atmospheric VOC budget. However, in highly industrialised regions, anthropogenic VOCs (e.g. benzene, toluene, ethylbenzene and xylene, combined abbreviated as BTEX) might dominate. VOCs …
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The application of novel mass spectrometric techniques for the analysis of volatile organic compounds in different environments
… then applied to the analysis of biogenic VOCs (bVOCs). Plants emit a wide variety of VOCs into that atmosphere. These compounds play an important role in plant communication and defence, with predatory insects making use of VOC emissions from plants following biotic stress to identify and locate …
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Investigating the Molecular Composition of Rainwater and Secondary Organic Aerosol using Ultra-High Resolution Mass Spectrometry
… (AVOCs) and Biogenic Volatile Organic Compounds (BVOCs). Several oligomer products from complex BVOC and AVOC oxidation, previously observed in chamber studies using similar soft ionisation techniques, were detected using EESI-MS. This thesis also includes the first study, to our knowledge, …
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Uncovering the Potential of Utilising Terrestrial Biogenic Markers in Ice Cores as Proxies to Past Environmental Conditions
… and their biogenic volatile organic compound (BVOC) precursors are intrinsically linked to atmospheric chemistry, climate control, and land use. These relationships have the potential to inform our knowledge on the reconstruction of past biospheres. Ten target compounds were established for …
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Secondary Organic Aerosols: Composition, Gas-to-Particle Partitioning and Physical Properties
Atmospheric aerosols influence our climate and air quality. Aerosol particles in the atmosphere are transformed through many different physical and chemical reactions. A substantial fraction of the particles in the atmosphere are of secondary origin, formed as a result of gas to particle …