The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity
Measurements of aerosol chemical and hygroscopic properties and cloud condensation nuclei were carried out as a part of the third Pallas Cloud Experiment. In this study, the aerosol hygroscopicity parameter, k, was determined using data from instruments operating in the sub-saturated and supersatura...
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ftncar:oai:drupal-site.org:articles_14372 2023-09-05T13:18:34+02:00 The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity Jaatinen, A. (author) Romakkaniemi, J. (author) Anttila, T. (author) Hyvärinen, A.-P. (author) Hao, L. (author) Kortelainen, A. (author) Miettinen, P. (author) Mikkonen, S. (author) Smith, James (author) Virtanen, A. (author) Laaksonen, A. (author) 2014-09-30 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-152 en eng Boreal Environment Research http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-152 ark:/85065/d7251k4p Copyright Author(s) 2014. Text article 2014 ftncar 2023-08-14T18:41:48Z Measurements of aerosol chemical and hygroscopic properties and cloud condensation nuclei were carried out as a part of the third Pallas Cloud Experiment. In this study, the aerosol hygroscopicity parameter, k, was determined using data from instruments operating in the sub-saturated and supersaturated water vapour regimes, as well as from measurements of aerosol chemical composition. During the campaign, k varied from ~0.01 to ~0.37 as derived by Cloud Condensation Nuclei counter and Hygroscopic Tandem Differential Mobility analyser data, and from ~0.13 to ~0.60 as derived from Aerosol Mass Spectrometer data, the average values being 0.11 and 0.29, respectively. CCN closure calculations showed that the sub-saturated growth factor retrieved CCN concentration is lower than the measured one. Overall, at the Pallas site, aerosol hygroscopicity was size dependent with hygroscopicity increasing with size. Hence, size dependent information on composition is needed to predict CCN concentrations relevant to cloud droplet formation. Article in Journal/Newspaper Boreal Environment Research OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Measurements of aerosol chemical and hygroscopic properties and cloud condensation nuclei were carried out as a part of the third Pallas Cloud Experiment. In this study, the aerosol hygroscopicity parameter, k, was determined using data from instruments operating in the sub-saturated and supersaturated water vapour regimes, as well as from measurements of aerosol chemical composition. During the campaign, k varied from ~0.01 to ~0.37 as derived by Cloud Condensation Nuclei counter and Hygroscopic Tandem Differential Mobility analyser data, and from ~0.13 to ~0.60 as derived from Aerosol Mass Spectrometer data, the average values being 0.11 and 0.29, respectively. CCN closure calculations showed that the sub-saturated growth factor retrieved CCN concentration is lower than the measured one. Overall, at the Pallas site, aerosol hygroscopicity was size dependent with hygroscopicity increasing with size. Hence, size dependent information on composition is needed to predict CCN concentrations relevant to cloud droplet formation. |
author2 |
Jaatinen, A. (author) Romakkaniemi, J. (author) Anttila, T. (author) Hyvärinen, A.-P. (author) Hao, L. (author) Kortelainen, A. (author) Miettinen, P. (author) Mikkonen, S. (author) Smith, James (author) Virtanen, A. (author) Laaksonen, A. (author) |
format |
Article in Journal/Newspaper |
title |
The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity |
spellingShingle |
The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity |
title_short |
The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity |
title_full |
The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity |
title_fullStr |
The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity |
title_full_unstemmed |
The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity |
title_sort |
third pallas cloud experiment: consistency between the aerosol hygroscopic growth and ccn activity |
publishDate |
2014 |
url |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-152 |
genre |
Boreal Environment Research |
genre_facet |
Boreal Environment Research |
op_relation |
Boreal Environment Research http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-021-152 ark:/85065/d7251k4p |
op_rights |
Copyright Author(s) 2014. |
_version_ |
1776199494859227136 |