Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater
The sea-surface microlayer and bulk seawater can contain ice-nucleating particles (INPs) and these INPs can be emitted into the atmosphere. Our current understanding of the properties, concentrations, and spatial and temporal distributions of INPs in the microlayer and bulk seawater is limited. In t...
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-17-10583-2017 https://doaj.org/article/eec530aa0d2f4fa5af6c974f56a60bbf |
id |
ftdoajarticles:oai:doaj.org/article:eec530aa0d2f4fa5af6c974f56a60bbf |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:eec530aa0d2f4fa5af6c974f56a60bbf 2023-05-15T14:48:25+02:00 Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater V. E. Irish P. Elizondo J. Chen C. Chou J. Charette M. Lizotte L. A. Ladino T. W. Wilson M. Gosselin B. J. Murray E. Polishchuk J. P. D. Abbatt L. A. Miller A. K. Bertram 2017-09-01T00:00:00Z https://doi.org/10.5194/acp-17-10583-2017 https://doaj.org/article/eec530aa0d2f4fa5af6c974f56a60bbf EN eng Copernicus Publications https://www.atmos-chem-phys.net/17/10583/2017/acp-17-10583-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-10583-2017 1680-7316 1680-7324 https://doaj.org/article/eec530aa0d2f4fa5af6c974f56a60bbf Atmospheric Chemistry and Physics, Vol 17, Pp 10583-10595 (2017) Physics QC1-999 Chemistry QD1-999 article 2017 ftdoajarticles https://doi.org/10.5194/acp-17-10583-2017 2022-12-31T02:12:34Z The sea-surface microlayer and bulk seawater can contain ice-nucleating particles (INPs) and these INPs can be emitted into the atmosphere. Our current understanding of the properties, concentrations, and spatial and temporal distributions of INPs in the microlayer and bulk seawater is limited. In this study we investigate the concentrations and properties of INPs in microlayer and bulk seawater samples collected in the Canadian Arctic during the summer of 2014. INPs were ubiquitous in the microlayer and bulk seawater with freezing temperatures in the immersion mode as high as −14 °C. A strong negative correlation ( R = −0. 7, p = 0. 02) was observed between salinity and freezing temperatures (after correction for freezing depression by the salts). One possible explanation is that INPs were associated with melting sea ice. Heat and filtration treatments of the samples show that the INPs were likely heat-labile biological materials with sizes between 0.02 and 0.2 µm in diameter, consistent with previous measurements off the coast of North America and near Greenland in the Arctic. The concentrations of INPs in the microlayer and bulk seawater were consistent with previous measurements at several other locations off the coast of North America. However, our average microlayer concentration was lower than previous observations made near Greenland in the Arctic. This difference could not be explained by chlorophyll a concentrations derived from satellite measurements. In addition, previous studies found significant INP enrichment in the microlayer, relative to bulk seawater, which we did not observe in this study. While further studies are needed to understand these differences, we confirm that there is a source of INP in the microlayer and bulk seawater in the Canadian Arctic that may be important for atmospheric INP concentrations. Article in Journal/Newspaper Arctic Greenland Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Greenland Atmospheric Chemistry and Physics 17 17 10583 10595 |
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 V. E. Irish P. Elizondo J. Chen C. Chou J. Charette M. Lizotte L. A. Ladino T. W. Wilson M. Gosselin B. J. Murray E. Polishchuk J. P. D. Abbatt L. A. Miller A. K. Bertram Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The sea-surface microlayer and bulk seawater can contain ice-nucleating particles (INPs) and these INPs can be emitted into the atmosphere. Our current understanding of the properties, concentrations, and spatial and temporal distributions of INPs in the microlayer and bulk seawater is limited. In this study we investigate the concentrations and properties of INPs in microlayer and bulk seawater samples collected in the Canadian Arctic during the summer of 2014. INPs were ubiquitous in the microlayer and bulk seawater with freezing temperatures in the immersion mode as high as −14 °C. A strong negative correlation ( R = −0. 7, p = 0. 02) was observed between salinity and freezing temperatures (after correction for freezing depression by the salts). One possible explanation is that INPs were associated with melting sea ice. Heat and filtration treatments of the samples show that the INPs were likely heat-labile biological materials with sizes between 0.02 and 0.2 µm in diameter, consistent with previous measurements off the coast of North America and near Greenland in the Arctic. The concentrations of INPs in the microlayer and bulk seawater were consistent with previous measurements at several other locations off the coast of North America. However, our average microlayer concentration was lower than previous observations made near Greenland in the Arctic. This difference could not be explained by chlorophyll a concentrations derived from satellite measurements. In addition, previous studies found significant INP enrichment in the microlayer, relative to bulk seawater, which we did not observe in this study. While further studies are needed to understand these differences, we confirm that there is a source of INP in the microlayer and bulk seawater in the Canadian Arctic that may be important for atmospheric INP concentrations. |
format |
Article in Journal/Newspaper |
author |
V. E. Irish P. Elizondo J. Chen C. Chou J. Charette M. Lizotte L. A. Ladino T. W. Wilson M. Gosselin B. J. Murray E. Polishchuk J. P. D. Abbatt L. A. Miller A. K. Bertram |
author_facet |
V. E. Irish P. Elizondo J. Chen C. Chou J. Charette M. Lizotte L. A. Ladino T. W. Wilson M. Gosselin B. J. Murray E. Polishchuk J. P. D. Abbatt L. A. Miller A. K. Bertram |
author_sort |
V. E. Irish |
title |
Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater |
title_short |
Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater |
title_full |
Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater |
title_fullStr |
Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater |
title_full_unstemmed |
Ice-nucleating particles in Canadian Arctic sea-surface microlayer and bulk seawater |
title_sort |
ice-nucleating particles in canadian arctic sea-surface microlayer and bulk seawater |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/acp-17-10583-2017 https://doaj.org/article/eec530aa0d2f4fa5af6c974f56a60bbf |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Sea ice |
genre_facet |
Arctic Greenland Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 17, Pp 10583-10595 (2017) |
op_relation |
https://www.atmos-chem-phys.net/17/10583/2017/acp-17-10583-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-17-10583-2017 1680-7316 1680-7324 https://doaj.org/article/eec530aa0d2f4fa5af6c974f56a60bbf |
op_doi |
https://doi.org/10.5194/acp-17-10583-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
17 |
container_start_page |
10583 |
op_container_end_page |
10595 |
_version_ |
1766319488004784128 |