Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments
The source strength and capability of aerosol particles in the Arctic to act as cloud condensation nuclei have important implications for understanding the indirect aerosol–cloud effect within the polar climate system. It has been shown in several Arctic regions that ultrafine particle (UFP) formati...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2017
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-17-13119-2017 https://doaj.org/article/b26ec1a3d51b49c08d0ccd11948b7110 |
id |
ftdoajarticles:oai:doaj.org/article:b26ec1a3d51b49c08d0ccd11948b7110 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:b26ec1a3d51b49c08d0ccd11948b7110 2023-05-15T14:46:04+02:00 Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments D. B. Collins J. Burkart R. Y.-W. Chang M. Lizotte A. Boivin-Rioux M. Blais E. L. Mungall M. Boyer V. E. Irish G. Massé D. Kunkel J.-É. Tremblay T. Papakyriakou A. K. Bertram H. Bozem M. Gosselin M. Levasseur J. P. D. Abbatt 2017-11-01T00:00:00Z https://doi.org/10.5194/acp-17-13119-2017 https://doaj.org/article/b26ec1a3d51b49c08d0ccd11948b7110 EN eng Copernicus Publications https://www.atmos-chem-phys.net/17/13119/2017/acp-17-13119-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-13119-2017 1680-7316 1680-7324 https://doaj.org/article/b26ec1a3d51b49c08d0ccd11948b7110 Atmospheric Chemistry and Physics, Vol 17, Pp 13119-13138 (2017) Physics QC1-999 Chemistry QD1-999 article 2017 ftdoajarticles https://doi.org/10.5194/acp-17-13119-2017 2022-12-31T14:27:09Z The source strength and capability of aerosol particles in the Arctic to act as cloud condensation nuclei have important implications for understanding the indirect aerosol–cloud effect within the polar climate system. It has been shown in several Arctic regions that ultrafine particle (UFP) formation and growth is a key contributor to aerosol number concentrations during the summer. This study uses aerosol number size distribution measurements from shipboard expeditions aboard the research icebreaker CCGS Amundsen in the summers of 2014 and 2016 throughout the Canadian Arctic to gain a deeper understanding of the drivers of UFP formation and growth within this marine boundary layer. UFP number concentrations (diameter > 4 nm) in the range of 10 1 –10 4 cm −3 were observed during the two seasons, with concentrations greater than 10 3 cm −3 occurring more frequently in 2016. Higher concentrations in 2016 were associated with UFP formation and growth, with events occurring on 41 % of days, while events were only observed on 6 % of days in 2014. Assessment of relevant parameters for aerosol nucleation showed that the median condensation sink in this region was approximately 1.2 h −1 in 2016 and 2.2 h −1 in 2014, which lie at the lower end of ranges observed at even the most remote stations reported in the literature. Apparent growth rates of all observed events in both expeditions averaged 4.3 ± 4.1 nm h −1 , in general agreement with other recent studies at similar latitudes. Higher solar radiation, lower cloud fractions, and lower sea ice concentrations combined with differences in the developmental stage and activity of marine microbial communities within the Canadian Arctic were documented and help explain differences between the aerosol measurements made during the 2014 and 2016 expeditions. These findings help to motivate further studies of biosphere–atmosphere interactions within the Arctic marine environment to explain the production of UFP and their growth to sizes relevant for cloud droplet activation. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 17 21 13119 13138 |
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 D. B. Collins J. Burkart R. Y.-W. Chang M. Lizotte A. Boivin-Rioux M. Blais E. L. Mungall M. Boyer V. E. Irish G. Massé D. Kunkel J.-É. Tremblay T. Papakyriakou A. K. Bertram H. Bozem M. Gosselin M. Levasseur J. P. D. Abbatt Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The source strength and capability of aerosol particles in the Arctic to act as cloud condensation nuclei have important implications for understanding the indirect aerosol–cloud effect within the polar climate system. It has been shown in several Arctic regions that ultrafine particle (UFP) formation and growth is a key contributor to aerosol number concentrations during the summer. This study uses aerosol number size distribution measurements from shipboard expeditions aboard the research icebreaker CCGS Amundsen in the summers of 2014 and 2016 throughout the Canadian Arctic to gain a deeper understanding of the drivers of UFP formation and growth within this marine boundary layer. UFP number concentrations (diameter > 4 nm) in the range of 10 1 –10 4 cm −3 were observed during the two seasons, with concentrations greater than 10 3 cm −3 occurring more frequently in 2016. Higher concentrations in 2016 were associated with UFP formation and growth, with events occurring on 41 % of days, while events were only observed on 6 % of days in 2014. Assessment of relevant parameters for aerosol nucleation showed that the median condensation sink in this region was approximately 1.2 h −1 in 2016 and 2.2 h −1 in 2014, which lie at the lower end of ranges observed at even the most remote stations reported in the literature. Apparent growth rates of all observed events in both expeditions averaged 4.3 ± 4.1 nm h −1 , in general agreement with other recent studies at similar latitudes. Higher solar radiation, lower cloud fractions, and lower sea ice concentrations combined with differences in the developmental stage and activity of marine microbial communities within the Canadian Arctic were documented and help explain differences between the aerosol measurements made during the 2014 and 2016 expeditions. These findings help to motivate further studies of biosphere–atmosphere interactions within the Arctic marine environment to explain the production of UFP and their growth to sizes relevant for cloud droplet activation. |
format |
Article in Journal/Newspaper |
author |
D. B. Collins J. Burkart R. Y.-W. Chang M. Lizotte A. Boivin-Rioux M. Blais E. L. Mungall M. Boyer V. E. Irish G. Massé D. Kunkel J.-É. Tremblay T. Papakyriakou A. K. Bertram H. Bozem M. Gosselin M. Levasseur J. P. D. Abbatt |
author_facet |
D. B. Collins J. Burkart R. Y.-W. Chang M. Lizotte A. Boivin-Rioux M. Blais E. L. Mungall M. Boyer V. E. Irish G. Massé D. Kunkel J.-É. Tremblay T. Papakyriakou A. K. Bertram H. Bozem M. Gosselin M. Levasseur J. P. D. Abbatt |
author_sort |
D. B. Collins |
title |
Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments |
title_short |
Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments |
title_full |
Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments |
title_fullStr |
Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments |
title_full_unstemmed |
Frequent ultrafine particle formation and growth in Canadian Arctic marine and coastal environments |
title_sort |
frequent ultrafine particle formation and growth in canadian arctic marine and coastal environments |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/acp-17-13119-2017 https://doaj.org/article/b26ec1a3d51b49c08d0ccd11948b7110 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 17, Pp 13119-13138 (2017) |
op_relation |
https://www.atmos-chem-phys.net/17/13119/2017/acp-17-13119-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-13119-2017 1680-7316 1680-7324 https://doaj.org/article/b26ec1a3d51b49c08d0ccd11948b7110 |
op_doi |
https://doi.org/10.5194/acp-17-13119-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
21 |
container_start_page |
13119 |
op_container_end_page |
13138 |
_version_ |
1766317340316663808 |