Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours
International audience Hygroscopicity (i.e. water vapour affinity) of atmospheric aerosol particles is one of the key factors in defining their impacts on climate. Condensation of sulphuric acid onto less hygroscopic particles is expected to increase their hygrocopicity and hence their cloud condens...
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ftinsu:oai:HAL:hal-00301512v1 2023-11-12T04:13:24+01:00 Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours Petäjä, T. Kerminen, V.-M. Hämeri, K. Vaattovaara, P. Joutsensaari, J. Junkermann, W. Laaksonen, A. Kulmala, M. Department of Physical Sciences Helsinki Helsingin yliopisto = Helsingfors universitet = University of Helsinki Finnish Meteorological Institute (FMI) Department of Applied Physics Kuopio University of Kuopio Institute for Meteorology and Climate Research (IMK) Karlsruhe Institute of Technology (KIT) 2004-11-26 https://hal.science/hal-00301512 https://hal.science/hal-00301512/document https://hal.science/hal-00301512/file/acpd-4-7725-2004.pdf en eng HAL CCSD European Geosciences Union hal-00301512 https://hal.science/hal-00301512 https://hal.science/hal-00301512/document https://hal.science/hal-00301512/file/acpd-4-7725-2004.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301512 Atmospheric Chemistry and Physics Discussions, 2004, 4 (6), pp.7725-7755 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2004 ftinsu 2023-11-01T17:26:04Z International audience Hygroscopicity (i.e. water vapour affinity) of atmospheric aerosol particles is one of the key factors in defining their impacts on climate. Condensation of sulphuric acid onto less hygroscopic particles is expected to increase their hygrocopicity and hence their cloud condensation nuclei formation potential. In this study, differences in the hygroscopic and ethanol uptake properties of ultrafine aerosol particles in the Arctic air masses with a different exposure to anthropogenic sulfur pollution were examined. The main discovery was that Aitken mode particles having been exposed to polluted air were more hygroscopic and less soluble to ethanol than after transport in clean air. This aging process was attributed to sulfur dioxide oxidation and subsequent condensation during the transport of these particle to our measurement site. The hygroscopicity of nucleation mode aerosol particles, on the other hand, was approximately the same in all the cases, being indicative of a relatively similar chemical composition despite the differences in air mass transport routes. These particles had also been produced closer to the observation site typically 3?8 h prior to sampling. Apparently, these particles did not have an opportunity to accumulate sulphuric acid on their way to the site, but instead their chemical composition (hygroscopicity and ethanol solubility) resembled that of particles produced in the local or semi-regional ambient conditions. Article in Journal/Newspaper Arctic Institut national des sciences de l'Univers: HAL-INSU Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Petäjä, T. Kerminen, V.-M. Hämeri, K. Vaattovaara, P. Joutsensaari, J. Junkermann, W. Laaksonen, A. Kulmala, M. Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Hygroscopicity (i.e. water vapour affinity) of atmospheric aerosol particles is one of the key factors in defining their impacts on climate. Condensation of sulphuric acid onto less hygroscopic particles is expected to increase their hygrocopicity and hence their cloud condensation nuclei formation potential. In this study, differences in the hygroscopic and ethanol uptake properties of ultrafine aerosol particles in the Arctic air masses with a different exposure to anthropogenic sulfur pollution were examined. The main discovery was that Aitken mode particles having been exposed to polluted air were more hygroscopic and less soluble to ethanol than after transport in clean air. This aging process was attributed to sulfur dioxide oxidation and subsequent condensation during the transport of these particle to our measurement site. The hygroscopicity of nucleation mode aerosol particles, on the other hand, was approximately the same in all the cases, being indicative of a relatively similar chemical composition despite the differences in air mass transport routes. These particles had also been produced closer to the observation site typically 3?8 h prior to sampling. Apparently, these particles did not have an opportunity to accumulate sulphuric acid on their way to the site, but instead their chemical composition (hygroscopicity and ethanol solubility) resembled that of particles produced in the local or semi-regional ambient conditions. |
author2 |
Department of Physical Sciences Helsinki Helsingin yliopisto = Helsingfors universitet = University of Helsinki Finnish Meteorological Institute (FMI) Department of Applied Physics Kuopio University of Kuopio Institute for Meteorology and Climate Research (IMK) Karlsruhe Institute of Technology (KIT) |
format |
Article in Journal/Newspaper |
author |
Petäjä, T. Kerminen, V.-M. Hämeri, K. Vaattovaara, P. Joutsensaari, J. Junkermann, W. Laaksonen, A. Kulmala, M. |
author_facet |
Petäjä, T. Kerminen, V.-M. Hämeri, K. Vaattovaara, P. Joutsensaari, J. Junkermann, W. Laaksonen, A. Kulmala, M. |
author_sort |
Petäjä, T. |
title |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_short |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_full |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_fullStr |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_full_unstemmed |
Effects of SO 2 oxidation on ambient aerosol growth in water and ethanol vapours |
title_sort |
effects of so 2 oxidation on ambient aerosol growth in water and ethanol vapours |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00301512 https://hal.science/hal-00301512/document https://hal.science/hal-00301512/file/acpd-4-7725-2004.pdf |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken Arctic |
geographic_facet |
Aitken Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00301512 Atmospheric Chemistry and Physics Discussions, 2004, 4 (6), pp.7725-7755 |
op_relation |
hal-00301512 https://hal.science/hal-00301512 https://hal.science/hal-00301512/document https://hal.science/hal-00301512/file/acpd-4-7725-2004.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782331413635268608 |