Themed collection HOT articles from Environmental Science: Atmospheres

This study assesses the atmospheric fate and environmental consequences of distributed XOVOC emissions.

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.

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.

Solar radiation management scenarios of two non-cooperative actors deploying stratospheric aerosol injection (SAI) can lead to a free-riding situation, or missing the climatic targets due to temperature oscillations induced by intermittency.

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.

There are large differences in the aerosol direct radiative effect (DRE) and radiative feedback-induced changes in PM_2.5 across various aerosol mixing states (external, Maxwell-Garnett, core–shell, homogeneous) during haze episodes in NCP of China.

We create emulators to capture the effects of changes in weather on O₃ and NO_X in eastern Canada. Climate change is projected to increase the US contribution to O₃ concentrations in eastern Canada more than the Canadian and Quebec contributions.

Satellite observations reveal unexpected NO_x emission hotspots along supply routes and in suburban areas during China's COVID-19 lockdown, demonstrating the value of high-resolution atmospheric monitoring for tracking human activities during crises.

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.