Themed collection REV articles from Environmental Science: Atmospheres

The reactions of peroxy radicals (RO₂) with HO₂ are relevant under low NO conditions. Here, available data on RO₂ + HO₂ are reviewed, and gaps where future research is needed are highlighted.

A methane framework based on a set of taxonomies and a common lexicon that provides a common structure in which data requirements, emission sources and monitoring methods can be described.

Modern office infrastructure, furnishings, and traditional cooking practices contribute to air pollution, posing significant health risks, including respiratory issues, cancer, and immune system suppression, especially for vulnerable groups.

As a highly reactive atmospheric oxidant, chlorine (Cl) atoms significantly contribute to the oxidation of volatile organic compounds (VOCs) and the formation of secondary organic aerosol (SOA) in coastal and industrial environments.

Renovation poses higher health risks than neighborhood activities, as statistical analysis highlights pollution concentration and benzene as key factors; based on this, a survey-driven indoor air quality index, ranging from 22 to 100, was developed.

Accurate detection of reactive oxygen species (ROS) in particulate matter (PM) is essential for assessing the oxidative potential (OP) of airborne pollutants and their associated health risks.

Summary of key findings on environmental contamination in Ghana, highlighting major emission sources (agricultural, vehicular, industrial) and their roles in pollutant deposition. Graphical abstract created by authors using Canva and Paint.

An overview of the history of Solar Radiation Management (SRM) governance shows many developments, but they have largely occurred within a handful of countries in the Global North. An uptick in recent developments suggests SRM is gaining traction.

The development of indoor air pollution inventories for different environments is crucial to quantify contributions of multiple and time-dependent sources and activities to air pollutant emissions and to mitigate the potential health consequences.

Microplastics (MPs) are emerging contaminants that require attention in sampling, analysis, and characterization in both indoor and outdoor air pollution to mitigate the potential dangers they pose to public health and the economy.

Harmful algal bloom events are increasing; aerosol particles from sea and lake sprays carry algal bloom toxins that react with atmospheric oxidants, creating transformation byproducts. Inhaling these toxins with air pollutants may pose health risks.

Carbon monoxide is a priority pollutant that is suitable as an indicator for assessing indoor air quality. Monitoring should preferably be embedded in an intelligent network of different sensors.

Different processes can lead to high electrical field strengths in snow and ice in polar regions with the potential to initiate free radical processes and a number of other chemical modifications.

This article reviews scientific evidence for the potential environmental impacts of stratospheric aerosol injection, a form of solar radiation geoengineering.

DTAA can be viewed as a model later-generation product of monoterpene ozonolysis, a major source of secondary organic aerosol. This paper shows that DTAA is semivolatile and continues reacting with OH, producing even later-generation products.

Chemical and optical analyses of brown carbon (BrC) aerosol components indicate that dung-derived and wood-derived emissions are comprised of nitrogen-containing and oxygen-containing chromophores, respectively.

First study highlights the applicability of the generalized additive model in source characterization and provides critical implications for air quality management and mercury mitigation strategies tailored to urban and suburban settings.

In this work, we observe the formation of accretion products in the self- and cross-reactions of several hydroxy peroxy radicals.

The evolution of particle size distribution of secondary organic aerosols (SOAs) is influenced by condensation and coagulation.

In an increasingly NH_x-dominated aqueous regime, changing particle and cloud droplet acidity impacts the partitioning behavior of ionizable organic compounds.

This modeling study shows that in an urban environment, the SOA production through oxidation of terpenoids emitted from anthropogenic sources is competitive with that induced by their biogenic sources.

We investigate the water uptake ability of amino acid ternary mixtures.

A thermal desorption GC-tandem MS method was developed to measure vapor-phase PFAS and their potential migration into indoor air.

Ammonium nitrate will condense to tiny particles under sub-zero conditions, activating well below 10 nm.

The aqueous sodium thiosulfate microdroplets mixed with glucose or sucrose are used as model system of ternary inorganic–organic aerosols, and the RH-dependent diffusivity of thiosulfate in such system is probed via its interfacial ozonolysis.

O₃ chemistry of substituted furans might contribute to acidity in nighttime biomass burning plumes.

Framework for analysis of PM_2.5 estimates.

Monitoring of gaseous elemental mercury (Hg⁰) using passive air samplers at 22 sites across Switzerland informs about actual mean national Hg⁰ concentrations, differences in Hg⁰ among rural and urban sites and its seasonal dynamics.

The heterogeneous chemical reaction happens on the surface of the optically suspended sea-spray aerosol particle and is monitored via the single-particle Raman spectroscopy.

Near-explicit chemical mechanisms representing toluene SOA formation are reduced using the GENOA algorithm and used in 3D simulations of air quality over Greater Paris and in the streets of a district near Paris.

Contribution of anthropogenic, biomass-burning and natural sources to the spatiotemporal extent of the episode across northern India.

Heterogeneous oxidation of alkylated polycyclic aromatic hydrocarbons (alkPAHs) by ozone is more rapid than their parent analogs (PAHs) and can produce a large variety of potentially toxic oxidation products.

The application of low and non-toxic concentrations of antimicrobial compounds in indoor air is an interesting strategy to reduce airborne bacteria and fungi thereby reducing infection risk.

Raising the ionisation rate (IR) increases the ion concentration, but also amplifies ion losses due to ion–ion recombination, consequently diminishing the formation rate of charged clusters at low HIO₃ concentrations.