Observations of ice nucleating particles over Southern Ocean waters
A likely important feature of the poorly understood aerosol‐cloud interactions over the Southern Ocean (SO) is the dominant role of sea spray aerosol, versus terrestrial aerosol. Ice nucleating particles (INPs), or particles required for heterogeneous ice nucleation, present over the SO have not bee...
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Online Access: | https://doi.org/10.1029/2018GL079981 http://ecite.utas.edu.au/128865 |
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ftunivtasecite:oai:ecite.utas.edu.au:128865 2023-05-15T15:04:29+02:00 Observations of ice nucleating particles over Southern Ocean waters McCluskey, CS Hill, TCJ Humphries, RS Rauker, AM Moreau, S Strutton, PG Chambers, SD Williams, AG McRobert, I Ward, J Keywood, MD Harnwell, J Ponsonby, W Loh, ZM Krummel, PB Protat, A Kreidenweis, SM DeMott, PJ 2018 https://doi.org/10.1029/2018GL079981 http://ecite.utas.edu.au/128865 en eng Amer Geophysical Union http://dx.doi.org/10.1029/2018GL079981 McCluskey, CS and Hill, TCJ and Humphries, RS and Rauker, AM and Moreau, S and Strutton, PG and Chambers, SD and Williams, AG and McRobert, I and Ward, J and Keywood, MD and Harnwell, J and Ponsonby, W and Loh, ZM and Krummel, PB and Protat, A and Kreidenweis, SM and DeMott, PJ, Observations of ice nucleating particles over Southern Ocean waters, Geophysical Research Letters, 45, (21) pp. 11,989-11,997. ISSN 0094-8276 (2018) [Refereed Article] http://ecite.utas.edu.au/128865 Earth Sciences Oceanography Oceanography not elsewhere classified Refereed Article PeerReviewed 2018 ftunivtasecite https://doi.org/10.1029/2018GL079981 2019-12-13T22:26:59Z A likely important feature of the poorly understood aerosol‐cloud interactions over the Southern Ocean (SO) is the dominant role of sea spray aerosol, versus terrestrial aerosol. Ice nucleating particles (INPs), or particles required for heterogeneous ice nucleation, present over the SO have not been studied in several decades. In this study, boundary layer aerosol properties and immersion freezing INP number concentrations ( n INPs ) were measured during a ship campaign that occurred south of Australia (down to 53 S) in March‐April 2016. Ocean surface chlorophyll‐ a concentrations ranged from 0.11‐1.77 mg m ‐3 and n INPs were a factor of 100 lower than historical surveys, ranging from 0.38 to 4.6 m ‐3 at ‐20 C. The INP population included organic heat‐stable material, with contributions from heat‐labile material. Lower INP source potentials of SO seawater samples compared to Arctic seawater were consistent with lower ice nucleating site densities in this study compared to north Atlantic air masses. Article in Journal/Newspaper Arctic North Atlantic Southern Ocean eCite UTAS (University of Tasmania) Arctic Southern Ocean Geophysical Research Letters 45 21 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Oceanography not elsewhere classified |
spellingShingle |
Earth Sciences Oceanography Oceanography not elsewhere classified McCluskey, CS Hill, TCJ Humphries, RS Rauker, AM Moreau, S Strutton, PG Chambers, SD Williams, AG McRobert, I Ward, J Keywood, MD Harnwell, J Ponsonby, W Loh, ZM Krummel, PB Protat, A Kreidenweis, SM DeMott, PJ Observations of ice nucleating particles over Southern Ocean waters |
topic_facet |
Earth Sciences Oceanography Oceanography not elsewhere classified |
description |
A likely important feature of the poorly understood aerosol‐cloud interactions over the Southern Ocean (SO) is the dominant role of sea spray aerosol, versus terrestrial aerosol. Ice nucleating particles (INPs), or particles required for heterogeneous ice nucleation, present over the SO have not been studied in several decades. In this study, boundary layer aerosol properties and immersion freezing INP number concentrations ( n INPs ) were measured during a ship campaign that occurred south of Australia (down to 53 S) in March‐April 2016. Ocean surface chlorophyll‐ a concentrations ranged from 0.11‐1.77 mg m ‐3 and n INPs were a factor of 100 lower than historical surveys, ranging from 0.38 to 4.6 m ‐3 at ‐20 C. The INP population included organic heat‐stable material, with contributions from heat‐labile material. Lower INP source potentials of SO seawater samples compared to Arctic seawater were consistent with lower ice nucleating site densities in this study compared to north Atlantic air masses. |
format |
Article in Journal/Newspaper |
author |
McCluskey, CS Hill, TCJ Humphries, RS Rauker, AM Moreau, S Strutton, PG Chambers, SD Williams, AG McRobert, I Ward, J Keywood, MD Harnwell, J Ponsonby, W Loh, ZM Krummel, PB Protat, A Kreidenweis, SM DeMott, PJ |
author_facet |
McCluskey, CS Hill, TCJ Humphries, RS Rauker, AM Moreau, S Strutton, PG Chambers, SD Williams, AG McRobert, I Ward, J Keywood, MD Harnwell, J Ponsonby, W Loh, ZM Krummel, PB Protat, A Kreidenweis, SM DeMott, PJ |
author_sort |
McCluskey, CS |
title |
Observations of ice nucleating particles over Southern Ocean waters |
title_short |
Observations of ice nucleating particles over Southern Ocean waters |
title_full |
Observations of ice nucleating particles over Southern Ocean waters |
title_fullStr |
Observations of ice nucleating particles over Southern Ocean waters |
title_full_unstemmed |
Observations of ice nucleating particles over Southern Ocean waters |
title_sort |
observations of ice nucleating particles over southern ocean waters |
publisher |
Amer Geophysical Union |
publishDate |
2018 |
url |
https://doi.org/10.1029/2018GL079981 http://ecite.utas.edu.au/128865 |
geographic |
Arctic Southern Ocean |
geographic_facet |
Arctic Southern Ocean |
genre |
Arctic North Atlantic Southern Ocean |
genre_facet |
Arctic North Atlantic Southern Ocean |
op_relation |
http://dx.doi.org/10.1029/2018GL079981 McCluskey, CS and Hill, TCJ and Humphries, RS and Rauker, AM and Moreau, S and Strutton, PG and Chambers, SD and Williams, AG and McRobert, I and Ward, J and Keywood, MD and Harnwell, J and Ponsonby, W and Loh, ZM and Krummel, PB and Protat, A and Kreidenweis, SM and DeMott, PJ, Observations of ice nucleating particles over Southern Ocean waters, Geophysical Research Letters, 45, (21) pp. 11,989-11,997. ISSN 0094-8276 (2018) [Refereed Article] http://ecite.utas.edu.au/128865 |
op_doi |
https://doi.org/10.1029/2018GL079981 |
container_title |
Geophysical Research Letters |
container_volume |
45 |
container_issue |
21 |
_version_ |
1766336252738535424 |