Changes in aerosol properties during spring-summer period in the Arctic troposphere
The change in aerosol properties during the transition from the more polluted spring to the clean summer in the Arctic troposphere was studied. A six-year data set of observations from Ny-Ålesund on Svalbard, covering the months April through June, serve as the basis for the characterisation of this...
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2008
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ftdoajarticles:oai:doaj.org/article:4aa6c739d8ae45dc94771e629b9d5c0d 2023-05-15T14:52:29+02:00 Changes in aerosol properties during spring-summer period in the Arctic troposphere A.-C. Engvall R. Krejci J. Ström R. Treffeisen R. Scheele O. Hermansen J. Paatero 2008-02-01T00:00:00Z https://doaj.org/article/4aa6c739d8ae45dc94771e629b9d5c0d EN eng Copernicus Publications http://www.atmos-chem-phys.net/8/445/2008/acp-8-445-2008.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/4aa6c739d8ae45dc94771e629b9d5c0d Atmospheric Chemistry and Physics, Vol 8, Iss 3, Pp 445-462 (2008) Physics QC1-999 Chemistry QD1-999 article 2008 ftdoajarticles 2022-12-31T03:01:41Z The change in aerosol properties during the transition from the more polluted spring to the clean summer in the Arctic troposphere was studied. A six-year data set of observations from Ny-Ålesund on Svalbard, covering the months April through June, serve as the basis for the characterisation of this time period. In addition four-day-back trajectories were used to describe air mass histories. The observed transition in aerosol properties from an accumulation-mode dominated distribution to an Aitken-mode dominated distribution is discussed with respect to long-range transport and influences from natural and anthropogenic sources of aerosols and pertinent trace gases. Our study shows that the air-mass transport is an important factor modulating the physical and chemical properties observed. However, the air-mass transport cannot alone explain the annually repeated systematic and rather rapid change in aerosol properties, occurring within a limited time window of approximately 10 days. With a simplified phenomenological model, which delivers the nucleation potential for new-particle formation, we suggest that the rapid shift in aerosol microphysical properties between the Arctic spring and summer is mainly driven by the incoming solar radiation in concert with transport of precursor gases and changes in condensational sink. Article in Journal/Newspaper Arctic Ny Ålesund Ny-Ålesund Svalbard Directory of Open Access Journals: DOAJ Articles Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic Ny-Ålesund Svalbard |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 A.-C. Engvall R. Krejci J. Ström R. Treffeisen R. Scheele O. Hermansen J. Paatero Changes in aerosol properties during spring-summer period in the Arctic troposphere |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The change in aerosol properties during the transition from the more polluted spring to the clean summer in the Arctic troposphere was studied. A six-year data set of observations from Ny-Ålesund on Svalbard, covering the months April through June, serve as the basis for the characterisation of this time period. In addition four-day-back trajectories were used to describe air mass histories. The observed transition in aerosol properties from an accumulation-mode dominated distribution to an Aitken-mode dominated distribution is discussed with respect to long-range transport and influences from natural and anthropogenic sources of aerosols and pertinent trace gases. Our study shows that the air-mass transport is an important factor modulating the physical and chemical properties observed. However, the air-mass transport cannot alone explain the annually repeated systematic and rather rapid change in aerosol properties, occurring within a limited time window of approximately 10 days. With a simplified phenomenological model, which delivers the nucleation potential for new-particle formation, we suggest that the rapid shift in aerosol microphysical properties between the Arctic spring and summer is mainly driven by the incoming solar radiation in concert with transport of precursor gases and changes in condensational sink. |
format |
Article in Journal/Newspaper |
author |
A.-C. Engvall R. Krejci J. Ström R. Treffeisen R. Scheele O. Hermansen J. Paatero |
author_facet |
A.-C. Engvall R. Krejci J. Ström R. Treffeisen R. Scheele O. Hermansen J. Paatero |
author_sort |
A.-C. Engvall |
title |
Changes in aerosol properties during spring-summer period in the Arctic troposphere |
title_short |
Changes in aerosol properties during spring-summer period in the Arctic troposphere |
title_full |
Changes in aerosol properties during spring-summer period in the Arctic troposphere |
title_fullStr |
Changes in aerosol properties during spring-summer period in the Arctic troposphere |
title_full_unstemmed |
Changes in aerosol properties during spring-summer period in the Arctic troposphere |
title_sort |
changes in aerosol properties during spring-summer period in the arctic troposphere |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doaj.org/article/4aa6c739d8ae45dc94771e629b9d5c0d |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken Arctic Ny-Ålesund Svalbard |
geographic_facet |
Aitken Arctic Ny-Ålesund Svalbard |
genre |
Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Atmospheric Chemistry and Physics, Vol 8, Iss 3, Pp 445-462 (2008) |
op_relation |
http://www.atmos-chem-phys.net/8/445/2008/acp-8-445-2008.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/4aa6c739d8ae45dc94771e629b9d5c0d |
_version_ |
1766323714704539648 |