Tag: Atmospheric chemistry and aerosols
Tropical isoprene variability differs across three regions
Study reveals tropical isoprene varies by region: Amazonia emission-controlled, Maritime Continent chemistry-controlled, and equatorial Africa intermediate, requiring region-specific atmospheric.
Sulfuric and nitric acids drive iron dissolution differently
Iron dissolution in urban aerosols follows divergent pathways controlled by sulfuric and nitric acids, shifting from nitric acid dominance at ground-level to sulfuric acid in the upper atmosphere.
EMAC model matches many observed global hydrogen cycles
EMAC earth system model accurately simulates global atmospheric hydrogen dynamics, achieving correlation coefficients exceeding 0.9 at remote polar stations against observational data.
Rocket chlorine may slightly slow ozone recovery
Study models how expanded rocket launches could impact stratospheric ozone recovery, finding that 10-52 fold increases in chlorine emissions would cause modest but measurable ozone depletion.
Global atmospheric chlorine inventories declined over 2004–2024
21-year satellite inventory shows global atmospheric chlorine declining since 2004, though emerging short-lived substances offset some gains from CFC phase-out regulations.
Emissions cuts have different wildfire effects across China
Study examines how aerosol and greenhouse gas reductions under carbon neutrality create regionally divergent wildfire impacts in China, with competing mechanisms driving risk changes.
Ozone formation shifted by season in Guanzhong Basin
Analysis of warm-season ozone and secondary aerosol formation in the Guanzhong Basin reveals sub-seasonal regime shifts, with traffic and industrial emissions driving both pollutants.
UKESM misses key marine aerosol formation pathways
Evaluation of UKESM1.1 against ATom aircraft data reveals missing marine aerosol formation pathways involving iodine, amines, and organic vapours in remote regions.
PFAS aerosols concentrated in fine particles under chamber conditions
Controlled chamber study of PFAS aerosol formation reveals size-dependent inhalation deposition patterns. Most PFAS show fine-mode aerosols with peaks at 0.3 micrometers, while bacterial seed.
Aerosol mixing state differed between inland and coastal sites
Entropy-based analysis of aerosol mixing state and CCN activity reveals distinct seasonal and geographic patterns, with heightened sensitivity in externally-mixed regimes at inland and coastal sites.
