TY  - JOUR
A1  - Sipilä, Mikko
A1  - Lehtipalo, Katrianne
A1  - Kulmala, Markku
A1  - Petäjä, Tuukka
A1  - Junninen, Heikki
A1  - Aalto, Pasi
A1  - Manninen, Hanna Elina
A1  - Vartianinen, E.
A1  - Riipinen, Ilona
A1  - Kyrö, Ella-Maria
A1  - Curtius, Joachim
A1  - Kürten, Christoph Andreas
A1  - Borrmann, Stephan
A1  - O'Dowd, Colin D.
T1  - Applicability of condensation particle counters to measure atmospheric clusters
T2  - Atmospheric chemistry and physics. Discussions
N2  - The ambient and laboratory molecular and ion clusters were investigated. Here we present data on the ambient concentrations of both charged and uncharged molecular clusters as well as the performance of a pulse height condensation particle counter (PH-CPC) and an expansion condensation particle counter (E-CPC). The ambient molecular cluster concentrations were measured using both instruments, and they were deployed in conjunction with ion spectrometers and other aerosol instruments in Hyytiälä, Finland at the SMEAR II station during 1 March to 30 June 2007. The observed cluster concentrations varied and were from ca. 1000 to 100 000 cm−3. Both instruments showed similar concentrations. The average size of detected clusters was approximately 1.8 nm. As the atmospheric measurements at sub 2-nm particles and molecular clusters are a challenging task, and we were most likely unable to detect the smallest clusters, the reported concentrations are our best estimates for minimum cluster concentrations in boreal forest environment.
Y1  - 2008
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/29248
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-292485
SN  - 1680-7367
SN  - 1680-7375
N1  - © Author(s) 2008. This work is licensed under a Creative Commons License.
VL  - 8
SP  - 4373
EP  - 4405
PB  - European Geosciences Union
CY  - Katlenburg-Lindau
ER  -