Accès ouvert
2026
article
OpenAlex
Kathleen A. Alden, Joanna Victoria Egan, Alexander James, Mark Duncan Tarn et autres
Abstract The upper haze region of the Venusian atmosphere (∼70–100 km) experiences localized cooling, probably due to gravity waves, creating transient cold pockets. Water ice clouds may form in these cold pockets when sulfuric acid droplets undergo hygroscopic growth and subsequent freezing. …
fr, gb
(code pays fourni par la source)
Accès ouvert
2026
conference-abstract
OpenAlex
Kathleen A. Alden, Jack Saville, Julien Witwicky, Nicolas Caillon et autres
Atmospheric nitrate, comprising particulate NO3- and gas-phase nitric acid (HNO3), is a highly significant product of the oxidation of NOx (= NO + NO2). Its isotopic composition (Δ17O, δ18O and δ15N) provides valuable information on NOx sources and atmospheric oxidation pathways, making …
fr
(code pays fourni par la source)
Accès ouvert
2025
conference-abstract
OpenAlex
Kathleen A. Alden, Joanna Victoria Egan, Alexander D. James, Mark Duncan Tarn et autres
The upper haze region of Venus’ atmosphere (~70-90 km) has been shown to experience cold pockets that may give rise to ice clouds that form from the freezing of sulphuric acid droplets (Turco et al., 1983) On Earth cirrus cloud often form …
gb
(code pays fourni par la source)
Accès ouvert
2025
article
OpenAlex
Kathleen A. Alden, Paul Bieber, Anna J. Miller, Nicole Link et autres
Organic matter in agricultural soil dust can enhance dust's ice-nucleating ability relative to mineral dust and thus impact local cloud formation. But how is this organic matter able to nucleate ice? We hypothesised that hydrophobic interfaces, such as the air–water interface, influence …
gb, ca, ch
(code pays fourni par la source)