edoc

New particle formation in the free troposphere: A question of chemistry and timing

Bianchi, F. and Trostl, J. and Junninen, H. and Frege, C. and Henne, S. and Hoyle, C. R. and Molteni, U. and Herrmann, E. and Adamov, A. and Bukowiecki, N. and Chen, X. and Duplissy, J. and Gysel, M. and Hutterli, M. and Kangasluoma, J. and Kontkanen, J. and Kuerten, A. and Manninen, H. E. and Muench, S. and Perakyla, O. and Petaja, T. and Rondo, L. and Williamson, C. and Weingartner, E. and Curtius, J. and Worsnop, D. R. and Kulmala, M. and Dommen, J. and Baltensperger, U.. (2016) New particle formation in the free troposphere: A question of chemistry and timing. SCIENCE, 352 (6289). pp. 1109-1112.

Full text not available from this repository.

Official URL: https://edoc.unibas.ch/73989/

Downloads: Statistics Overview

Abstract

New particle formation (NPF) is the source of over half of the atmosphere's cloud condensation nuclei, thus influencing cloud properties and Earth's energy balance. Unlike in the planetary boundary layer, few observations of NPF in the free troposphere exist. We provide observational evidence that at high altitudes, NPF occurs mainly through condensation of highly oxygenated molecules (HOMs), in addition to taking place through sulfuric acid-ammonia nucleation. Neutral nucleation is more than 10 times faster than ion-induced nucleation, and growth rates are size-dependent. NPF is restricted to a time window of 1 to 2 days after contact of the air masses with the planetary boundary layer; this is related to the time needed for oxidation of organic compounds to form HOMs. These findings require improved NPF parameterization in atmospheric models.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Geowissenschaften > Atmospheric Sciences (Kalberer)
UniBasel Contributors:Bukowiecki, Nicolas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:AMER ASSOC ADVANCEMENT SCIENCE
ISSN:0036-8075
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:16 May 2020 14:09
Deposited On:16 May 2020 14:09

Repository Staff Only: item control page