Rapid growth of organic aerosol nanoparticles over a wide tropospheric temperature range

Proceedings of the National Academy of Sciences of the United States of America
Dominik StolzenburgPaul M Winkler

Abstract

Nucleation and growth of aerosol particles from atmospheric vapors constitutes a major source of global cloud condensation nuclei (CCN). The fraction of newly formed particles that reaches CCN sizes is highly sensitive to particle growth rates, especially for particle sizes <10 nm, where coagulation losses to larger aerosol particles are greatest. Recent results show that some oxidation products from biogenic volatile organic compounds are major contributors to particle formation and initial growth. However, whether oxidized organics contribute to particle growth over the broad span of tropospheric temperatures remains an open question, and quantitative mass balance for organic growth has yet to be demonstrated at any temperature. Here, in experiments performed under atmospheric conditions in the Cosmics Leaving Outdoor Droplets (CLOUD) chamber at the European Organization for Nuclear Research (CERN), we show that rapid growth of organic particles occurs over the range from [Formula: see text]C to [Formula: see text]C. The lower extent of autoxidation at reduced temperatures is compensated by the decreased volatility of all oxidized molecules. This is confirmed by particle-phase composition measurements, showing enhanced uptake...Continue Reading

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Citations

Feb 14, 2020·Nature Protocols·Lubna DadaJuha Kangasluoma
Oct 2, 2019·Nature Communications·Claudia MohrTaina Yli-Juuti
Oct 3, 2020·Nature Communications·Andrea BaccariniJulia Schmale
Oct 23, 2019·Proceedings of the National Academy of Sciences of the United States of America·Linda FeketeováTilmann D Märk
Jan 24, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Angelica BiancoGilles Mailhot
Feb 18, 2021·Environmental Science & Technology·Shixian Wang, Hui Li
Feb 2, 2021·Science Advances·Chenxi LiRuth Signorell
Jun 10, 2020·Environmental Science & Technology·Mingyi WangNeil M Donahue
Nov 24, 2019·Environmental Science & Technology·Mohammed JaouiTadeusz E Kleindienst
Dec 15, 2018·The Journal of Physical Chemistry. a·Eric PraskePaul O Wennberg
Oct 22, 2021·Environmental Science & Technology·Shen YangGabriel Bekö

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