Polarimetric backscatter sonde observations of southern ocean clouds and aerosols
Balloon-borne polarimetric backscatter sonde (polarsonde) observations of aerosol and cloud during the approach of a cold front at Macquarie Island (54.499 S 158.937 E) are described. The polarsonde captures vertical profiles of cloud occurrence and phase. The cloud base and cloud top heights from t...
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Online Access: | https://research.monash.edu/en/publications/831d661f-2e32-41ee-abd6-5d3495d38982 https://doi.org/10.3390/ATMOS11040399 https://researchmgt.monash.edu/ws/files/318469512/315788564_oa.pdf http://www.scopus.com/inward/record.url?scp=85084657129&partnerID=8YFLogxK |
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ftmonashunicris:oai:monash.edu:publications/831d661f-2e32-41ee-abd6-5d3495d38982 2023-05-15T17:09:57+02:00 Polarimetric backscatter sonde observations of southern ocean clouds and aerosols Hamilton, Murray Alexander, Simon P. Protat, Alain Siems, Steven Carpentier, Scott 2020-04-17 application/pdf https://research.monash.edu/en/publications/831d661f-2e32-41ee-abd6-5d3495d38982 https://doi.org/10.3390/ATMOS11040399 https://researchmgt.monash.edu/ws/files/318469512/315788564_oa.pdf http://www.scopus.com/inward/record.url?scp=85084657129&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Hamilton , M , Alexander , S P , Protat , A , Siems , S & Carpentier , S 2020 , ' Polarimetric backscatter sonde observations of southern ocean clouds and aerosols ' , Atmosphere , vol. 11 , no. 4 , 399 . https://doi.org/10.3390/ATMOS11040399 Aerosol Backscatter sonde Cloud Southern Ocean article 2020 ftmonashunicris https://doi.org/10.3390/ATMOS11040399 2023-02-05T06:36:51Z Balloon-borne polarimetric backscatter sonde (polarsonde) observations of aerosol and cloud during the approach of a cold front at Macquarie Island (54.499 S 158.937 E) are described. The polarsonde captures vertical profiles of cloud occurrence and phase. The cloud base and cloud top heights from the backscatter sonde compare favourably with observations made by a co-located cloud radar and ceilometer. An estimate of the total scatter probability from a liquid cloud layer at 1000 m height is used with a Monte Carlo model of the instrument to obtain cloud particle concentration, and this is compared to a measurement of cloud condensation nucleus concentration made at sea level. Backscatter from aerosol, as well as cloud, is significant. A high aerosol loading in part of the pre-frontal airmass is observed at altitudes up to 6 km. Below the melting level, the high cross-polarised return, relative to the co-polarised, indicates a substantial concentration of solid, non-spherical aerosol particles, which due to the high humidity cannot be sea salt or sulphate. A back trajectory analysis indicates that the observed aerosol includes continental dust. Article in Journal/Newspaper Macquarie Island Southern Ocean Monash University Research Portal Southern Ocean Atmosphere 11 4 399 |
institution |
Open Polar |
collection |
Monash University Research Portal |
op_collection_id |
ftmonashunicris |
language |
English |
topic |
Aerosol Backscatter sonde Cloud Southern Ocean |
spellingShingle |
Aerosol Backscatter sonde Cloud Southern Ocean Hamilton, Murray Alexander, Simon P. Protat, Alain Siems, Steven Carpentier, Scott Polarimetric backscatter sonde observations of southern ocean clouds and aerosols |
topic_facet |
Aerosol Backscatter sonde Cloud Southern Ocean |
description |
Balloon-borne polarimetric backscatter sonde (polarsonde) observations of aerosol and cloud during the approach of a cold front at Macquarie Island (54.499 S 158.937 E) are described. The polarsonde captures vertical profiles of cloud occurrence and phase. The cloud base and cloud top heights from the backscatter sonde compare favourably with observations made by a co-located cloud radar and ceilometer. An estimate of the total scatter probability from a liquid cloud layer at 1000 m height is used with a Monte Carlo model of the instrument to obtain cloud particle concentration, and this is compared to a measurement of cloud condensation nucleus concentration made at sea level. Backscatter from aerosol, as well as cloud, is significant. A high aerosol loading in part of the pre-frontal airmass is observed at altitudes up to 6 km. Below the melting level, the high cross-polarised return, relative to the co-polarised, indicates a substantial concentration of solid, non-spherical aerosol particles, which due to the high humidity cannot be sea salt or sulphate. A back trajectory analysis indicates that the observed aerosol includes continental dust. |
format |
Article in Journal/Newspaper |
author |
Hamilton, Murray Alexander, Simon P. Protat, Alain Siems, Steven Carpentier, Scott |
author_facet |
Hamilton, Murray Alexander, Simon P. Protat, Alain Siems, Steven Carpentier, Scott |
author_sort |
Hamilton, Murray |
title |
Polarimetric backscatter sonde observations of southern ocean clouds and aerosols |
title_short |
Polarimetric backscatter sonde observations of southern ocean clouds and aerosols |
title_full |
Polarimetric backscatter sonde observations of southern ocean clouds and aerosols |
title_fullStr |
Polarimetric backscatter sonde observations of southern ocean clouds and aerosols |
title_full_unstemmed |
Polarimetric backscatter sonde observations of southern ocean clouds and aerosols |
title_sort |
polarimetric backscatter sonde observations of southern ocean clouds and aerosols |
publishDate |
2020 |
url |
https://research.monash.edu/en/publications/831d661f-2e32-41ee-abd6-5d3495d38982 https://doi.org/10.3390/ATMOS11040399 https://researchmgt.monash.edu/ws/files/318469512/315788564_oa.pdf http://www.scopus.com/inward/record.url?scp=85084657129&partnerID=8YFLogxK |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Macquarie Island Southern Ocean |
genre_facet |
Macquarie Island Southern Ocean |
op_source |
Hamilton , M , Alexander , S P , Protat , A , Siems , S & Carpentier , S 2020 , ' Polarimetric backscatter sonde observations of southern ocean clouds and aerosols ' , Atmosphere , vol. 11 , no. 4 , 399 . https://doi.org/10.3390/ATMOS11040399 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3390/ATMOS11040399 |
container_title |
Atmosphere |
container_volume |
11 |
container_issue |
4 |
container_start_page |
399 |
_version_ |
1766066340934713344 |