Publications de Athanasios Nenes

Inactivation of SARS-CoV-2 at acidic pH is driven by partial unfolding of spike

Athanasios Nenes, Tamar Kohn, Aline Laetitia Schaub, Shannon Christa David

SARS-CoV-2, the causative agent of COVID-19, is predominantly transmitted by respiratory aerosol and contaminated surfaces. Recent studies demonstrated that aerosols can become acidic, and acidification has been proposed as decontamination method. Here, we ...

Springer Science and Business Media LLC2025

Atmospheric reactive nitrogen and its dry deposition regimes under anthropogenic influence: Insights from intensive and long-term monitoring in Switzerland

Athanasios Nenes, Andrea Baccarini, Kalliopi Violaki, Ghislain Gilles Jean-Michel Motos

Excessive nitrogen deposition from anthropogenic activities poses significant challenges to ecosystems and air quality.1 The atmospheric deposition of ammonium and nitrate plays a critical role in regulating ecosystem productivity and driving particulate m ...

2025

Effects of wind-blown dust emissions on size-resolved aerosol acidity over the US

Athanasios Nenes

Wind-blown dust can affect the acidity of all particles, impacting a series of related chemical processes. In this work, we use a wind-blown dust emissions model along with the hybrid version of aerosol dynamics in the PMCAMx chemical transport model to qu ...

Elsevier2025

Airborne Microorganisms at Hellenic Atmospheric Aerosol and Climate Change Station in Helmos Mountain (Greece)

Athanasios Nenes

Cultural-based methods of bacteria and fungi and molecular identification of bacteria were combined with parallel continuous measurements of aerosol chemical composition, number size distribution, ice-nucleating concentration, and fluorescent particle size ...

American Chemical Society (ACS)2025

On the drivers of ice nucleating particle diurnal variability in Eastern Mediterranean clouds

Athanasios Nenes, Romanos Foskinis, Kunfeng Gao

We report the drivers of spatiotemporal variability of ice nucleating particles (INPs) for mixed-phase orographic clouds (~−25 °C) in the Eastern Mediterranean. In the planetary boundary layer, pronounced INP diurnal periodicity is observed, which is mainl ...

Springer Science and Business Media LLC2025

Comparative characterization of bronchial and nasal mucus reveals key determinants of influenza A virus inhibition

Athanasios Nenes, Tamar Kohn, Kalliopi Violaki, Ghislain Gilles Jean-Michel Motos, Walter Hugentobler, Céline Terrettaz, Aline Laetitia Schaub

Differentiated primary human respiratory epithelial cells grown at air-liquid interface have become a widely used cell culture model of the human conducting airways. These cultures contain secretory cells such as goblet and club cells, which produce and se ...

American Society for Microbiology2025

Assessing the Global Contribution of Marine Aerosols, Terrestrial Bioaerosols, and Desert Dust to Ice-nucleating Particle Concentrations

Athanasios Nenes

Aerosol-cloud interactions, particularly ice processes in mixed-phase clouds (MPCs), remain a key source of uncertainty in climate change assessments. This study introduces state-of-the-art laboratory-based parameterizations into a global chemistry-transpo ...

COPERNICUS GESELLSCHAFT MBH2025

Significant contributions of fresh and aged biomass burning organic aerosol from residential burning in a wintertime urban environment

Athanasios Nenes

The biomass burning organic aerosol (BBOA) was quantified and characterized during a period of elevated emissions from residential heating at a Mediterranean urban area. Positive Matrix Factorization (PMF) of the measurements from a high-resolution time-of ...

Elsevier2025

Impact of mineral dust on the global nitrate aerosol direct and indirect radiative effect

Athanasios Nenes

Nitrate (NO3-) aerosol is projected to increase dramatically in the coming decades and may become the dominant inorganic particle species. This is due to the continued strong decrease in SO2 emissions, which is not accompanied by a corresponding decrease i ...

Copernicus GmbH2025

Aerosol-Driven Parameterization of Ice Nucleation and Secondary Ice Processes in EC-Earth3: Evaluation and Climate Impacts

Athanasios Nenes

Clouds remain a major source of uncertainty in climate projections, particularly due to complexities in aerosol-cloud interactions. To improve the representation of mixed-phase clouds in EC-Earth3, the model's heterogeneous ice nucleation scheme has been u ...

2025