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Fourteen Months of On-line Measurements of the Non-refractory Submicron Aerosol at the Jungfraujoch (3580 M A.S.L.) – Chemical Composition, Origins and Organic Aerosol Sources : Volume 15, Issue 13 (07/07/2015)

By Fröhlich, R.

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Book Id: WPLBN0003992760
Format Type: PDF Article :
File Size: Pages 60
Reproduction Date: 2015

Title: Fourteen Months of On-line Measurements of the Non-refractory Submicron Aerosol at the Jungfraujoch (3580 M A.S.L.) – Chemical Composition, Origins and Organic Aerosol Sources : Volume 15, Issue 13 (07/07/2015)  
Author: Fröhlich, R.
Volume: Vol. 15, Issue 13
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Cubison, M. J., Bukowiecki, N., Slowik, J. G., Fröhlich, R., Steinbacher, M., H. Prévô, A. S.,...Gysel, M. (2015). Fourteen Months of On-line Measurements of the Non-refractory Submicron Aerosol at the Jungfraujoch (3580 M A.S.L.) – Chemical Composition, Origins and Organic Aerosol Sources : Volume 15, Issue 13 (07/07/2015). Retrieved from

Description: Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen PSI, Switzerland. Chemically resolved (organic, nitrate, sulphate, ammonium) data of non-refractory submicron (NR-PM1) aerosol from the first long-term deployment (27 July 2012 to 02 October 2013) of a time-of-flight aerosol chemical speciation monitor (ToF-ACSM) at the Swiss high altitude site Jungfraujoch (3580 m a.s.l.) are presented. Besides total mass loadings, diurnal variations and relative species contributions during the different meteorological seasons, geographical origin and sources of organic aerosol (OA) are discussed. Backward transport simulations shows that the highest (especially sulphate) concentrations of NR-PM1 were measured in air masses advected to the station from regions south of the JFJ while lowest concentrations were seen from western regions. OA source apportionment for each season was performed using the Source Finder (SoFi) interface for the multilinear engine (ME-2). OA was dominated in all seasons by oxygenated OA (OOA, 71–88 %), with lesser contributions from local tourism-related activities (7–12 %) and hydrocarbon-like OA related to regional vertical transport (3–9 %). In summer the OOA can be separated into a background low-volatility OA (LV-OOA I, possibly associated with long range transport) and a slightly less oxidised low-volatility OA (LV-OOA II) associated with regional vertical transport. Wood burning-related OA associated with regional transport was detected during the whole winter 2012/2013 and during rare events in summer 2013, in the latter case attributed to small scale transport for the surrounding valleys. Additionally, the data were divided into periods with free tropospheric (FT) conditions and periods with planetary boundary layer (PBL) influence enabling the assessment of the composition for each. Most nitrate and part of the OA is injected from the regional PBL while sulphate is mainly produced in the FT. The south/north gradient of sulphate is also pronounced in FT air masses (sulphate mass fraction from the south: 45 %, from the north: 29 %). Furthermore, a detailed investigation of specific marker fragments of the OA spectra (f43, f44, f55, f57, f60) showed different degrees of ageing depending on season.

Fourteen months of on-line measurements of the non-refractory submicron aerosol at the Jungfraujoch (3580 m a.s.l.) – chemical composition, origins and organic aerosol sources

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