TY  - JOUR
A1  - Stolzenburg, Dominik
A1  - Fischer, Lukas
A1  - Vogel, Alexander L.
A1  - Heinritzi, Martin
A1  - Schervish, Meredith
A1  - Simon, Mario
A1  - Wagner, Andrea Christine
A1  - Dada, Lubna
A1  - Ahonen, Lauri R.
A1  - Amorim, Antonio
A1  - Baccarini, Andrea
A1  - Bauer, Paulus Salomon
A1  - Baumgartner, Bernhard
A1  - Bergen, Anton
A1  - Bianchi, Federico
A1  - Breitenlechner, Martin
A1  - Brilke, Sophia
A1  - Buenrostro Mazon, Stephany
A1  - Chen, Dexian
A1  - Dias, Antonio
A1  - Draper, Danielle C.
A1  - Duplissy, Jonathan
A1  - El Haddad, Imad
A1  - Finkenzeller, Henning
A1  - Frege, Carla
A1  - Fuchs, Claudia
A1  - Garmash, Olga
A1  - Gordon, Hamish
A1  - He, Xucheng
A1  - Helm, Johanna
A1  - Hofbauer, Victoria
A1  - Hoyle, Christopher Robert
A1  - Kim, Changhyuk
A1  - Kirkby, Jasper
A1  - Kontkanen, Jenni
A1  - Kürten, Christoph Andreas
A1  - Lampilahti, Janne
A1  - Lawler, Michael Joseph
A1  - Lehtipalo, Katrianne
A1  - Leiminger, Markus
A1  - Mai, Huajun
A1  - Mathot, Serge
A1  - Mentler, Bernhard
A1  - Molteni, Ugo
A1  - Nie, Wei
A1  - Nieminen, Tuomo
A1  - Nowak, John B.
A1  - Ojdanic, Andrea
A1  - Onnela, Antti
A1  - Passananti, Monica
A1  - Petäjä, Tuukka
A1  - Quéléver, Lauriane L. J.
A1  - Rissanen, Matti P.
A1  - Sarnela, Nina
A1  - Schallhart, Simon
A1  - Tauber, Christian
A1  - Tomé, Antonio
A1  - Wagner, Robert
A1  - Wang, Mingyi
A1  - Weitz, Lena
A1  - Wimmer, Daniela
A1  - Xiao, Mao
A1  - Yan, Chao
A1  - Ye, Penglin
A1  - Zha, Qiaozhi
A1  - Baltensperger, Urs
A1  - Curtius, Joachim
A1  - Dommen, Josef
A1  - Flagan, Richard C.
A1  - Kulmala, Markku
A1  - Smith, James N.
A1  - Worsnop, Douglas R.
A1  - Hansel, Armin
A1  - Donahue, Neil McPherson
A1  - Winkler, Paul M.
T1  - Rapid growth of organic aerosol nanoparticles over a wide tropospheric temperature range
T2  - Proceedings of the National Academy of Sciences of the United States of America
N2  - 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 −25 ∘C to 25 ∘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 of relatively less oxygenated products at cold temperatures. We can reproduce the measured growth rates using an aerosol growth model based entirely on the experimentally measured gas-phase spectra of oxidized organic molecules obtained from two complementary mass spectrometers. We show that the growth rates are sensitive to particle curvature, explaining widespread atmospheric observations that particle growth rates increase in the single-digit-nanometer size range. Our results demonstrate that organic vapors can contribute to particle growth over a wide range of tropospheric temperatures from molecular cluster sizes onward.
KW  - aerosols
KW  - nanoparticle growth
KW  - aerosol formation
KW  - CLOUD experiment
KW  - volatile organic compounds
Y1  - 2018
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/47734
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-477347
SN  - 1091-6490
SN  - 0027-8424
N1  - This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).
VL  - 115
IS  - 37
SP  - 9122
EP  - 9127
PB  - National Acad. of Sciences
CY  - Washington, DC
ER  -