Search Results - "Olenius, Tinja"
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Role of gas–molecular cluster–aerosol dynamics in atmospheric new-particle formation
Published in Scientific reports (16-06-2022)“…New-particle formation from vapors through molecular cluster formation is a central process affecting atmospheric aerosol and cloud condensation nuclei…”
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2
Molecular understanding of sulphuric acid–amine particle nucleation in the atmosphere
Published in Nature (London) (17-10-2013)“…Amines at typical atmospheric concentrations of a only few molecules per trillion air molecules combine with sulphuric acid to form highly stable aerosol…”
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3
The role of highly oxygenated organic molecules in the Boreal aerosol-cloud-climate system
Published in Nature communications (25-09-2019)“…Over Boreal regions, monoterpenes emitted from the forest are the main precursors for secondary organic aerosol (SOA) formation and the primary driver of the…”
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The effect of acid–base clustering and ions on the growth of atmospheric nano-particles
Published in Nature communications (20-05-2016)“…The growth of freshly formed aerosol particles can be the bottleneck in their survival to cloud condensation nuclei. It is therefore crucial to understand how…”
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Temperature-Dependent Diffusion of H2SO4 in Air at Atmospherically Relevant Conditions: Laboratory Measurements Using Laminar Flow Technique
Published in Atmosphere (22-07-2017)“…We report flow tube measurements of the effective sulfuric acid diffusion coefficient at ranges of different relative humidities (from ∼4 to 70%), temperatures…”
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Molecular-resolution simulations of new particle formation: Evaluation of common assumptions made in describing nucleation in aerosol dynamics models
Published in Aerosol science and technology (03-04-2017)“…Aerosol dynamics models that describe the evolution of a particle distribution incorporate nucleation as a particle formation rate at a small size around a few…”
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Molecular-Level Understanding of Synergistic Effects in Sulfuric Acid–Amine–Ammonia Mixed Clusters
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (28-03-2019)“…The abundance and basicity of a stabilizing base have shown to be key factors in sulfuric acid driven atmospheric new-particle formation. However, since…”
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J-GAIN v1.1: a flexible tool to incorporate aerosol formation rates obtained by molecular models into large-scale models
Published in Geoscientific Model Development (13-09-2023)“…New-particle formation from condensable gases is a common atmospheric process that has significant but uncertain effects on aerosol particle number…”
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Role of Iodine-Assisted Aerosol Particle Formation in Antarctica
Published in Environmental science & technology (30-04-2024)“…New particle formation via the ion-mediated sulfuric acid and ammonia molecular clustering mechanism remains the most widely observed and experimentally…”
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10
Modeling of exhaust gas cleaning by acid pollutant conversion to aerosol particles
Published in Fuel (Guildford) (15-04-2021)“…•For exhaust gas cleaning, H2SO4 and HNO3 can be converted to aerosol particles by NH3.•A model set-up to simulate the gas-to-particle conversion of H2SO4 and…”
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11
Guanidine: A Highly Efficient Stabilizer in Atmospheric New-Particle Formation
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (24-05-2018)“…The role of a strong organobase, guanidine, in sulfuric acid-driven new-particle formation is studied using state-of-the-art quantum chemical methods and…”
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12
Role of base strength, cluster structure and charge in sulfuric-acid-driven particle formation
Published in Atmospheric chemistry and physics (02-08-2019)“…In atmospheric sulfuric-acid-driven particle formation, bases are able to stabilize the initial molecular clusters and thus enhance particle formation. The…”
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13
Effect of Bisulfate, Ammonia, and Ammonium on the Clustering of Organic Acids and Sulfuric Acid
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (29-06-2017)“…We investigate the effect of the bisulfate anion HSO4 –, ammonium cation NH4 +, and ammonia NH3 on the clustering of sulfuric acid and pinic acid or…”
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14
New particle formation from sulfuric acid and amines: Comparison of monomethylamine, dimethylamine, and trimethylamine
Published in Journal of geophysical research. Atmospheres (16-07-2017)“…Amines are bases that originate from both anthropogenic and natural sources, and they are recognized as candidates to participate in atmospheric aerosol…”
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Exploring the potential of nano-Köhler theory to describe the growth of atmospheric molecular clusters by organic vapors using cluster kinetics simulations
Published in Atmospheric chemistry and physics (27-09-2018)“…Atmospheric new particle formation (NPF) occurs by the formation of nanometer-sized molecular clusters and their subsequent growth to larger particles. NPF…”
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16
Natural Marine Precursors Boost Continental New Particle Formation and Production of Cloud Condensation Nuclei
Published in Environmental science & technology (25-06-2024)“…Marine dimethyl sulfide (DMS) emissions are the dominant source of natural sulfur in the atmosphere. DMS oxidizes to produce low-volatility acids that…”
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Impacts of Future European Emission Reductions on Aerosol Particle Number Concentrations Accounting for Effects of Ammonia, Amines, and Organic Species
Published in Environmental science & technology (16-01-2018)“…Although they are currently unregulated, atmospheric ultrafine particles (<100 nm) pose health risks because of, e.g., their capability to penetrate deep into…”
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18
Neutral Sulfuric Acid–Water Clustering Rates: Bridging the Gap between Molecular Simulation and Experiment
Published in The journal of physical chemistry letters (21-05-2020)“…The role of sulfuric acid during atmospheric new particle formation is an ongoing topic of discussion. In this work, we provide quantitative experimental…”
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Hydration of Atmospherically Relevant Molecular Clusters: Computational Chemistry and Classical Thermodynamics
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (10-04-2014)“…Formation of new particles through clustering of molecules from condensable vapors is a significant source for atmospheric aerosols. The smallest clusters…”
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Robust metric for quantifying the importance of stochastic effects on nanoparticle growth
Published in Scientific reports (21-09-2018)“…Comprehensive representation of nanoparticle dynamics is necessary for understanding nucleation and growth phenomena. This is critical in atmospheric physics,…”
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