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Showing 1–12 of 12 results
Advanced filters: Author: Siegfried Schobesberger Clear advanced filters

  • Experiments under upper-tropospheric conditions map the chemical formation of isoprene oxygenated organic molecules (important molecules for new particle formation) and reveal that relative radical ratios control their composition

    • Douglas M. Russell
    • Felix Kunkler
    • Joachim Curtius
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-14

  • Experiments performed in the CERN CLOUD chamber show that, under upper-tropospheric conditions, new atmospheric particle formation may be initiated by the reaction of hydroxyl radicals with isoprene emitted by rainforests.

    • Jiali Shen
    • Douglas M. Russell
    • Xu-Cheng He
    ResearchOpen Access
    Nature
    Volume: 636, P: 115-123

  • The authors identify that sedges in the Arctic have a different isoprene temperature response than other temperate plants, and this finding explains the high temperature sensitivity of isoprene emissions from Arctic terrestrial ecosystems.

    • Hui Wang
    • Allison M. Welch
    • Alex B. Guenther
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-9

  • The growth rates of freshly formed aerosol particles influence what fraction of these can reach sizes large enough to affect cloud formation and climate. Here, the authors show that the nano-particle growth in a sulphuric acid containing system can be enhanced by the presence of ions or small acid-base clusters.

    • Katrianne Lehtipalo
    • Linda Rondo
    • Markku Kulmala
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-9

  • By performing experiments under upper tropospheric conditions, nitric acid, sulfuric acid and ammonia can form particles synergistically, at rates orders of magnitude faster than any two of the three components.

    • Mingyi Wang
    • Mao Xiao
    • Neil M. Donahue
    ResearchOpen Access
    Nature
    Volume: 605, P: 483-489

  • Diterpenes are an underestimated source of secondary organic aerosol, accounting for up to 13% of the secondary organic aerosol burden from isoprene, according to combined chamber experiments and chemical transport modelling.

    • Ana Maria Yáñez-Serrano
    • Josep Peñuelas
    • Mikael Ehn
    ResearchOpen Access
    Communications Earth & Environment
    Volume: 6, P: 1-11

  • The growth of nucleated organic particles has been investigated in controlled laboratory experiments under atmospheric conditions; initial growth is driven by organic vapours of extremely low volatility, and accelerated by more abundant vapours of slightly higher volatility, leading to markedly different modelled concentrations of atmospheric cloud condensation nuclei when this growth mechanism is taken into account.

    • Jasmin Tröstl
    • Wayne K. Chuang
    • Urs Baltensperger
    ResearchOpen Access
    Nature
    Volume: 533, P: 527-531

  • Aerosol particles can form in the atmosphere by nucleation of highly oxidized biogenic vapours in the absence of sulfuric acid, with ions from Galactic cosmic rays increasing the nucleation rate by one to two orders of magnitude compared with neutral nucleation.

    • Jasper Kirkby
    • Jonathan Duplissy
    • Joachim Curtius
    ResearchOpen Access
    Nature
    Volume: 533, P: 521-526

  • The link between biogenic volatile organic compounds in the atmosphere and their conversion to aerosol particles is unclear, but a direct reaction pathway is now described by which volatile organic compounds lead to low-volatility vapours that can then condense onto aerosol surfaces, producing secondary organic aerosol.

    • Mikael Ehn
    • Joel A. Thornton
    • Thomas F. Mentel
    Research
    Nature
    Volume: 506, P: 476-479