Using a cloud condensation nuclei counter to study CCN properties and concentrations
A Cloud Condensation Nuclei Counter (CCNC) has been constructed, calibrated and used in field conditions. The CCNC was used in a rural/boreal forest site (Hyytiälä), in marine/coastal sites (Tenerife and Mace Head), and in an urban site (Helsinki). Expressions for determining the soluble volume frac...
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Boreal Environment Research Publishing Board
2024
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Online Access: | http://hdl.handle.net/10138/578099 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/578099 2024-09-09T19:34:21+00:00 Using a cloud condensation nuclei counter to study CCN properties and concentrations Aalto, P. Kulmala, M. 2024-06-27T13:44:40Z 349-359 application/pdf http://hdl.handle.net/10138/578099 eng eng Boreal Environment Research Publishing Board Boreal Environment Research 1239-6095 1797-2469 4 5 http://hdl.handle.net/10138/578099 Suomen ympäristökeskus CC BY 4.0 openAccess Artikkeli lehdessä 2024 ftunivhelsihelda 2024-08-21T23:48:04Z A Cloud Condensation Nuclei Counter (CCNC) has been constructed, calibrated and used in field conditions. The CCNC was used in a rural/boreal forest site (Hyytiälä), in marine/coastal sites (Tenerife and Mace Head), and in an urban site (Helsinki). Expressions for determining the soluble volume fraction of particles were derived. The soluble fraction of Aitken mode particles was determined and the CCNC number concentrations were observed. In the marine air masses the soluble fraction was seen to be around 0.8. In the rural site the soluble fraction was around 0.3 and some diurnal variation was seen. In Helsinki the soluble fraction was somewhat higher than in the boreal forest site. Article in Journal/Newspaper Boreal Environment Research HELDA – University of Helsinki Open Repository Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Mace ENVELOPE(155.883,155.883,-81.417,-81.417) |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
description |
A Cloud Condensation Nuclei Counter (CCNC) has been constructed, calibrated and used in field conditions. The CCNC was used in a rural/boreal forest site (Hyytiälä), in marine/coastal sites (Tenerife and Mace Head), and in an urban site (Helsinki). Expressions for determining the soluble volume fraction of particles were derived. The soluble fraction of Aitken mode particles was determined and the CCNC number concentrations were observed. In the marine air masses the soluble fraction was seen to be around 0.8. In the rural site the soluble fraction was around 0.3 and some diurnal variation was seen. In Helsinki the soluble fraction was somewhat higher than in the boreal forest site. |
format |
Article in Journal/Newspaper |
author |
Aalto, P. Kulmala, M. |
spellingShingle |
Aalto, P. Kulmala, M. Using a cloud condensation nuclei counter to study CCN properties and concentrations |
author_facet |
Aalto, P. Kulmala, M. |
author_sort |
Aalto, P. |
title |
Using a cloud condensation nuclei counter to study CCN properties and concentrations |
title_short |
Using a cloud condensation nuclei counter to study CCN properties and concentrations |
title_full |
Using a cloud condensation nuclei counter to study CCN properties and concentrations |
title_fullStr |
Using a cloud condensation nuclei counter to study CCN properties and concentrations |
title_full_unstemmed |
Using a cloud condensation nuclei counter to study CCN properties and concentrations |
title_sort |
using a cloud condensation nuclei counter to study ccn properties and concentrations |
publisher |
Boreal Environment Research Publishing Board |
publishDate |
2024 |
url |
http://hdl.handle.net/10138/578099 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) ENVELOPE(155.883,155.883,-81.417,-81.417) |
geographic |
Aitken Mace |
geographic_facet |
Aitken Mace |
genre |
Boreal Environment Research |
genre_facet |
Boreal Environment Research |
op_relation |
Boreal Environment Research 1239-6095 1797-2469 4 5 http://hdl.handle.net/10138/578099 Suomen ympäristökeskus |
op_rights |
CC BY 4.0 openAccess |
_version_ |
1809903851747147776 |