98%
921
2 minutes
20
Cloud condensation nuclei (CCN) activity and ice nucleation behavior (for temperatures
Download full-text PDF
Source
http://dx.doi.org/10.1039/b905334b DOI Listing Publication Analysis
Top Keywords
Nature
September 2025
Instituto de Astrofísica de Canarias, San Cristobal de La Laguna, Spain.
Within 20 pc of the Sun, there are currently 29 known cold brown dwarfs-sources with measured distances and an estimated effective temperature between that of Jupiter (170 K) and approximately 500 K (ref. ). These sources are almost all isolated and are the closest laboratories we have for detailed atmospheric studies of giant planets formed outside the Solar System.
View Article and Find Full Text PDFSci Adv
August 2025
Center for Aerosol Science and Engineering, Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, MO, USA.
Sea spray aerosol (SSA) emission is a major source of atmospheric aerosols, influencing global climate and coastal air quality. Much of our knowledge about SSA derives from coastal observations near shorelines, but whether and when these observations accurately represent open oceans remain unclear. Here, we show that strong nearshore SSA production during high-wave periods greatly enhances downwind cloud condensation nuclei (CCN) and aerosol mass concentrations.
View Article and Find Full Text PDFEnviron Sci Technol
September 2025
Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States.
Ambient aerosols are complex mixtures containing thousands of unique organic molecules. However, due to the large surface-area-to-volume ratio of aerosol droplets, surface-active molecules can become depleted in the droplet bulk, resulting in a size-dependent surface tension. Size-dependent partitioning models have been extensively tested for droplets containing a single surfactant and cosolute.
View Article and Find Full Text PDFACS EST Air
August 2025
Department of Chemical and Biomolecular Engineering, A. James Clark School of Engineering, University of Maryland, College Park, College Park, Maryland 20742, United States.
The partitioning between inorganic salts and organic compounds within individual particles is a key factor that influences the uptake of water by particles. In this study, we investigated the aerosol hygroscopicity of ammonium sulfate (AS) and 2-methylglutaric acid (2-MGA) mixtures. 2-MGA is a moderately surface-active compound.
View Article and Find Full Text PDFJ Phys Chem Lett
August 2025
Department of Chemistry, The State University of New York at Buffalo, Buffalo, New York 14260, United States.
Electrostatic interactions mediated by surrounding ions critically influence RNA behavior, yet flexible RNAs remain underexplored. We performed molecular dynamics simulations to examine three RNAs across the structural continuum: unstructured poly uridylic tract (rU), a semiflexible cytosine-adenine-guanine (CAG) repeat, and a tightly folded pseudoknot. Despite similar net charges, rU attracts a diffuse Mg cloud extending beyond two hydration shells, while the CAG repeat and pseudoknot favor more compact outer-sphere Mg binding.
View Article and Find Full Text PDF