Probing the morphology of dust particles in deep ice cores with light scattering
The size distribution and light extinction cross-section of airborne particles are among the climate proxies investigated in palaeoclimate research and required by radiative transfer models. The optical properties of the particles are acquired by a non-invasive, single-particle light scattering tech...
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Società italiana di fisica
2021
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ftcnrroma:oai:eprints.bice.rm.cnr.it:21288 2023-05-15T16:38:53+02:00 Probing the morphology of dust particles in deep ice cores with light scattering Cremonesi, Llorenc¸ 2021 text http://eprints.bice.rm.cnr.it/21288/ http://eprints.bice.rm.cnr.it/21288/1/ncc12240%20%281%29.pdf https://www.sif.it/riviste/sif/ncc/ en eng Società italiana di fisica http://eprints.bice.rm.cnr.it/21288/1/ncc12240%20%281%29.pdf Cremonesi, Llorenc¸ (2021) Probing the morphology of dust particles in deep ice cores with light scattering. Il nuovo cimento C, 44 (1). pp. 1-10. ISSN 1826-9885 530 Fisica Article PeerReviewed 2021 ftcnrroma 2022-02-24T22:12:29Z The size distribution and light extinction cross-section of airborne particles are among the climate proxies investigated in palaeoclimate research and required by radiative transfer models. The optical properties of the particles are acquired by a non-invasive, single-particle light scattering technique to characterise aeolian dust stored in deep polar ice core samples. The same method is applied to study alpine ice cores and firn cores. The particle-by-particle approach provides a comprehensive statistical analysis while overcoming the limitations imposed by low concentrations (∼ 101–103 ng/g). From a geometrical standpoint, dust particles deviate significantly from homogeneous spheres, as expected by many studies on mineral dust sources and ice core analysis. Features such as shape and structure prove to have greater importance than the particle refractive index in determining their radiative properties. By comparing experimental data to computationally inexpensive simulations, the main morphological properties of the particles can be inferred, such as the ratio between the axes in prolate particles and the porosity in isometric aggregate particles. Article in Journal/Newspaper ice core CNR Solar (Scientific Open-access Literature Archive and Repository - National Research Council) |
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Open Polar |
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CNR Solar (Scientific Open-access Literature Archive and Repository - National Research Council) |
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ftcnrroma |
language |
English |
topic |
530 Fisica |
spellingShingle |
530 Fisica Cremonesi, Llorenc¸ Probing the morphology of dust particles in deep ice cores with light scattering |
topic_facet |
530 Fisica |
description |
The size distribution and light extinction cross-section of airborne particles are among the climate proxies investigated in palaeoclimate research and required by radiative transfer models. The optical properties of the particles are acquired by a non-invasive, single-particle light scattering technique to characterise aeolian dust stored in deep polar ice core samples. The same method is applied to study alpine ice cores and firn cores. The particle-by-particle approach provides a comprehensive statistical analysis while overcoming the limitations imposed by low concentrations (∼ 101–103 ng/g). From a geometrical standpoint, dust particles deviate significantly from homogeneous spheres, as expected by many studies on mineral dust sources and ice core analysis. Features such as shape and structure prove to have greater importance than the particle refractive index in determining their radiative properties. By comparing experimental data to computationally inexpensive simulations, the main morphological properties of the particles can be inferred, such as the ratio between the axes in prolate particles and the porosity in isometric aggregate particles. |
format |
Article in Journal/Newspaper |
author |
Cremonesi, Llorenc¸ |
author_facet |
Cremonesi, Llorenc¸ |
author_sort |
Cremonesi, Llorenc¸ |
title |
Probing the morphology of dust particles in deep ice cores with light scattering |
title_short |
Probing the morphology of dust particles in deep ice cores with light scattering |
title_full |
Probing the morphology of dust particles in deep ice cores with light scattering |
title_fullStr |
Probing the morphology of dust particles in deep ice cores with light scattering |
title_full_unstemmed |
Probing the morphology of dust particles in deep ice cores with light scattering |
title_sort |
probing the morphology of dust particles in deep ice cores with light scattering |
publisher |
Società italiana di fisica |
publishDate |
2021 |
url |
http://eprints.bice.rm.cnr.it/21288/ http://eprints.bice.rm.cnr.it/21288/1/ncc12240%20%281%29.pdf https://www.sif.it/riviste/sif/ncc/ |
genre |
ice core |
genre_facet |
ice core |
op_relation |
http://eprints.bice.rm.cnr.it/21288/1/ncc12240%20%281%29.pdf Cremonesi, Llorenc¸ (2021) Probing the morphology of dust particles in deep ice cores with light scattering. Il nuovo cimento C, 44 (1). pp. 1-10. ISSN 1826-9885 |
_version_ |
1766029225781886976 |