Themed collection ES: Atmospheres Hot Papers

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.

Surfactants alter the physical and chemical properties of atmospheric aerosol particles.

Particulate nitrate photolysis can lead to the formation of secondary inorganic and organic aerosols that affect climate, air quality, and human health.

Satellites could revolutionise the way global oil and gas methane is reported. There are many barriers to overcome before satellites can play an active role in methane emissions reporting.

Partitioning of secondary organic aerosol from α-pinene onto hydrophobic polystyrene nanoplastics leads to partially-engulfed particles that undergo hygroscopic growth.

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.

The Kathmandu Valley in Nepal suffers from unhealthy air quality, with mean pre-monsoon submicron particulate matter concentration (PM₁) of 40 μg m⁻³ and daily peaks over 75 μg m⁻³.

65–74% of light extinction is due to light scattering in Mexico City. Organic aerosols dominate both submicron mass loading and light scattering. Brown carbon and black carbon contribute 22% and 78% to the total light absorption, respectively. Road traffic and regional wildfires are the main contributors to light absorption. The aerosols' optical properties exhibit distinctive diurnal and seasonal patterns.

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 (PM_2.5).

OME as sustainable alternative diesel fuel burns without the agglomeration of soot particles which is the case for fossil and paraffinic diesel fuels. Nuclei mode particles are mainly of a volatile nature and do not survive exhaust aftertreatment.

The decomposition rates of organic hydroperoxides derived from ozonolysis of terpene-alcohol in the presence of short-chain alcohols in aqueous organic media is markedly increased as the temperature is increased.

Our results suggest that a significant source of ice nucleating particles at Alert, Nunavut, during October and November, was likely ice-free and snow-free land at latitudes >50 °N.

Even though the majority of brown carbon in biomass-burning emissions is soluble in methanol, the methanol-insoluble fraction dominates light absorption at mid-visible wavelengths.

The absorption efficiency of chemically resolved organic aerosols of Southwestern Amazonia showed strong spectral dependence and significant light absorption in the UV-vis wavelength range indicating the presence of organic species that act as BrC.

The ice nucleation activity of volcanic ash can change when exposed to liquid water or aqueous sulfuric acid through a complex interplay of geochemical alteration mechanisms.

Polycatechol and polyguaiacol are light-absorbing and water-insoluble compounds that are produced from biomass burning emissions. The aerosol can act as seeds for cloud droplet formation.