Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica
Mineral dust aerosol (dust) is widely recognized as a fundamental component of the climate system and is closely coupled with glacial-interglacial climate oscillations of the Quaternary period. However, the direct impact of dust on the energy balance of the Earth system remains poorly quantified, ma...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Publishing Group
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/10281/117709 https://doi.org/10.1038/srep28162 |
id |
ftunivmilanobic:oai:boa.unimib.it:10281/117709 |
---|---|
record_format |
openpolar |
spelling |
ftunivmilanobic:oai:boa.unimib.it:10281/117709 2024-04-14T08:03:00+00:00 Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica Potenza, M Albani, S Delmonte, B Villa, S Sanvito, T Paroli, B Pullia, A Baccolo, G Mahowald, N Maggi, V Potenza, M Albani, S Delmonte, B Villa, S Sanvito, T Paroli, B Pullia, A Baccolo, G Mahowald, N Maggi, V 2016 http://hdl.handle.net/10281/117709 https://doi.org/10.1038/srep28162 eng eng Nature Publishing Group country:GB info:eu-repo/semantics/altIdentifier/pmid/27306584 info:eu-repo/semantics/altIdentifier/wos/WOS:000378105700001 volume:6 firstpage:1 lastpage:9 numberofpages:9 journal:SCIENTIFIC REPORTS http://hdl.handle.net/10281/117709 doi:10.1038/srep28162 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84975503037 info:eu-repo/semantics/openAccess dust Antarctica climate paleoclimate optical properties info:eu-repo/semantics/article 2016 ftunivmilanobic https://doi.org/10.1038/srep28162 2024-03-21T02:02:22Z Mineral dust aerosol (dust) is widely recognized as a fundamental component of the climate system and is closely coupled with glacial-interglacial climate oscillations of the Quaternary period. However, the direct impact of dust on the energy balance of the Earth system remains poorly quantified, mainly because of uncertainties in dust radiative properties, which vary greatly over space and time. Here we provide the first direct measurements of the aerosol optical thickness of dust particles windblown to central East Antarctica (Dome C) during the last glacial maximum (LGM) and the Holocene. By applying the Single Particle Extinction and Scattering (SPES) technique and imposing preferential orientation to particles, we derive information on shape from samples of a few thousands of particles. These results highlight that clear shape variations occurring within a few years are hidden to routine measurement techniques. With this novel measurement method the optical properties of airborne dust can be directly measured from ice core samples, and can be used as input into climate model simulations. Based on simulations with an Earth System Model we suggest an effect of particle non-sphericity on dust aerosol optical depth (AOD) of about 30% compared to spheres, and differences in the order of ∼10% when considering different combinations of particles shapes. Article in Journal/Newspaper Antarc* Antarctica East Antarctica ice core Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) East Antarctica Scientific Reports 6 1 |
institution |
Open Polar |
collection |
Università degli Studi di Milano-Bicocca: BOA (Bicocca Open Archive) |
op_collection_id |
ftunivmilanobic |
language |
English |
topic |
dust Antarctica climate paleoclimate optical properties |
spellingShingle |
dust Antarctica climate paleoclimate optical properties Potenza, M Albani, S Delmonte, B Villa, S Sanvito, T Paroli, B Pullia, A Baccolo, G Mahowald, N Maggi, V Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica |
topic_facet |
dust Antarctica climate paleoclimate optical properties |
description |
Mineral dust aerosol (dust) is widely recognized as a fundamental component of the climate system and is closely coupled with glacial-interglacial climate oscillations of the Quaternary period. However, the direct impact of dust on the energy balance of the Earth system remains poorly quantified, mainly because of uncertainties in dust radiative properties, which vary greatly over space and time. Here we provide the first direct measurements of the aerosol optical thickness of dust particles windblown to central East Antarctica (Dome C) during the last glacial maximum (LGM) and the Holocene. By applying the Single Particle Extinction and Scattering (SPES) technique and imposing preferential orientation to particles, we derive information on shape from samples of a few thousands of particles. These results highlight that clear shape variations occurring within a few years are hidden to routine measurement techniques. With this novel measurement method the optical properties of airborne dust can be directly measured from ice core samples, and can be used as input into climate model simulations. Based on simulations with an Earth System Model we suggest an effect of particle non-sphericity on dust aerosol optical depth (AOD) of about 30% compared to spheres, and differences in the order of ∼10% when considering different combinations of particles shapes. |
author2 |
Potenza, M Albani, S Delmonte, B Villa, S Sanvito, T Paroli, B Pullia, A Baccolo, G Mahowald, N Maggi, V |
format |
Article in Journal/Newspaper |
author |
Potenza, M Albani, S Delmonte, B Villa, S Sanvito, T Paroli, B Pullia, A Baccolo, G Mahowald, N Maggi, V |
author_facet |
Potenza, M Albani, S Delmonte, B Villa, S Sanvito, T Paroli, B Pullia, A Baccolo, G Mahowald, N Maggi, V |
author_sort |
Potenza, M |
title |
Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica |
title_short |
Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica |
title_full |
Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica |
title_fullStr |
Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica |
title_full_unstemmed |
Shape and size constraints on dust optical properties from the Dome C ice core, Antarctica |
title_sort |
shape and size constraints on dust optical properties from the dome c ice core, antarctica |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://hdl.handle.net/10281/117709 https://doi.org/10.1038/srep28162 |
geographic |
East Antarctica |
geographic_facet |
East Antarctica |
genre |
Antarc* Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctica East Antarctica ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/27306584 info:eu-repo/semantics/altIdentifier/wos/WOS:000378105700001 volume:6 firstpage:1 lastpage:9 numberofpages:9 journal:SCIENTIFIC REPORTS http://hdl.handle.net/10281/117709 doi:10.1038/srep28162 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84975503037 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/srep28162 |
container_title |
Scientific Reports |
container_volume |
6 |
container_issue |
1 |
_version_ |
1796319332205068288 |