Themed collection Aerosol formation in the urban environment

6 items
Open Access Paper

Geometries, molecular Rayleigh scattering, Raman and infrared frequencies of polycyclic aromatic hydrocarbons and subunits of graphite studied by DFT methods

A computational investigation of geometric parameters, infrared (IR) and Raman frequencies as well as molecular Rayleigh scattering of polycyclic aromatic hydrocarbons (PAHs), used as models for subunits of larger graphitic materials.

Graphical abstract: Geometries, molecular Rayleigh scattering, Raman and infrared frequencies of polycyclic aromatic hydrocarbons and subunits of graphite studied by DFT methods
From the themed collection: Aerosol formation in the urban environment
Open Access Paper

Predicting glass transition temperature and melting point of organic compounds via machine learning and molecular embeddings

We developed tgBoost a machine learning model to predict glass transition temperature (Tg) of organic species considering their molecular structure and functionality for better predictions of the phase state of secondary organic aerosols.

Graphical abstract: Predicting glass transition temperature and melting point of organic compounds via machine learning and molecular embeddings
From the themed collection: Aerosol formation in the urban environment
Open Access Paper

The contribution of new particle formation and subsequent growth to haze formation

We investigated the contribution of atmospheric new particle formation (NPF) and subsequent growth of the newly formed particles, characterized by high concentrations of fine particulate matter (PM2.5).

Graphical abstract: The contribution of new particle formation and subsequent growth to haze formation
From the themed collection: Aerosol formation in the urban environment
Open Access Paper

Observed coupling between air mass history, secondary growth of nucleation mode particles and aerosol pollution levels in Beijing

Growth of nucleation mode particles, modulated by air mass exposure to anthropogenic emissions, plays an important role in pollution development.

Graphical abstract: Observed coupling between air mass history, secondary growth of nucleation mode particles and aerosol pollution levels in Beijing
From the themed collection: Aerosol formation in the urban environment
Open Access Paper

Size-resolved characterization of organic aerosol in the North China Plain: new insights from high resolution spectral analysis

Size-resolved organic aerosol (OA) analysis elucidated largely different size distributions of primary and secondary OA, and oxidation states between urban and rural sites in different seasons.

Graphical abstract: Size-resolved characterization of organic aerosol in the North China Plain: new insights from high resolution spectral analysis
Open Access Paper

A computationally efficient model to represent the chemistry, thermodynamics, and microphysics of secondary organic aerosols (simpleSOM): model development and application to α-pinene SOA

Secondary organic aerosols (SOA) constitute an important fraction of fine-mode atmospheric aerosol mass.

Graphical abstract: A computationally efficient model to represent the chemistry, thermodynamics, and microphysics of secondary organic aerosols (simpleSOM): model development and application to α-pinene SOA
From the themed collection: Aerosol formation in the urban environment
6 items

About this collection

This collection is intended to highlight the importance of aerosol particle formation in the urban atmosphere. 

Guest-edited by Mikael Ehn, Katrianne Lehtipalo (University of Helsinki) and Paul Winkler (University of Vienna), this broad collection includes studies on new particle formation and growth mechanisms and rates, and the sources, transformations and chemical composition of aerosol precursor vapours, clusters, and particles. The impact of particle formation on air quality, health or climate is also covered.


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