Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice
The optical properties of aerosol particles must be clearly understood to reduce uncertainty in the prediction of the global climate change. Simultaneous measurements of scattering and absorption coefficients of aerosol particles were conducted in the atmospheric boundary layer over the western Nort...
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ftnipr:oai:nipr.repo.nii.ac.jp:00016831 2023-05-15T18:02:48+02:00 Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice 2021-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16831 http://id.nii.ac.jp/1291/00016701/ en eng https://doi.org/10.1016/j.polar.2021.100704 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16831 http://id.nii.ac.jp/1291/00016701/ Polar Science, 29, 100704(2021-09) 18739652 Scattering coefficient Absorption coefficient Single-scattering albedo Ångström exponent Southern ocean Sea ice Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2021.100704 2022-12-03T19:43:21Z The optical properties of aerosol particles must be clearly understood to reduce uncertainty in the prediction of the global climate change. Simultaneous measurements of scattering and absorption coefficients of aerosol particles were conducted in the atmospheric boundary layer over the western North Pacific and the Southern Ocean. For the scattering coefficient, total scattering and backscattering coefficients were measured at three different wavelengths. Over the western North Pacific, significant differences in the Ångström exponent and absorption coefficient were found between polluted and pristine air masses. Over the parts of the Southern Ocean free of sea ice, the Ångström exponent and the ratio of the back-to total-scattering coefficients were uniform. However, over the sea-ice regions, the scattering coefficients were an order of magnitude lower, and the Ångström exponent an order of magnitude higher, than over the parts of the ocean free of sea ice. These differences appear to be due to the fact that the emission of aerosol precursors and sea salt particles is suppressed by sea ice. This study represents the difference in aerosol optical properties as a function of source region and sea condition. These results will contribute to improving the accuracy of estimates of the direct radiative forcing effects due to aerosol particles. Article in Journal/Newspaper Polar Science Polar Science Sea ice Southern Ocean National Institute of Polar Research Repository, Japan Southern Ocean Pacific Polar Science 29 100704 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Scattering coefficient Absorption coefficient Single-scattering albedo Ångström exponent Southern ocean Sea ice |
spellingShingle |
Scattering coefficient Absorption coefficient Single-scattering albedo Ångström exponent Southern ocean Sea ice Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice |
topic_facet |
Scattering coefficient Absorption coefficient Single-scattering albedo Ångström exponent Southern ocean Sea ice |
description |
The optical properties of aerosol particles must be clearly understood to reduce uncertainty in the prediction of the global climate change. Simultaneous measurements of scattering and absorption coefficients of aerosol particles were conducted in the atmospheric boundary layer over the western North Pacific and the Southern Ocean. For the scattering coefficient, total scattering and backscattering coefficients were measured at three different wavelengths. Over the western North Pacific, significant differences in the Ångström exponent and absorption coefficient were found between polluted and pristine air masses. Over the parts of the Southern Ocean free of sea ice, the Ångström exponent and the ratio of the back-to total-scattering coefficients were uniform. However, over the sea-ice regions, the scattering coefficients were an order of magnitude lower, and the Ångström exponent an order of magnitude higher, than over the parts of the ocean free of sea ice. These differences appear to be due to the fact that the emission of aerosol precursors and sea salt particles is suppressed by sea ice. This study represents the difference in aerosol optical properties as a function of source region and sea condition. These results will contribute to improving the accuracy of estimates of the direct radiative forcing effects due to aerosol particles. |
format |
Article in Journal/Newspaper |
title |
Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice |
title_short |
Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice |
title_full |
Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice |
title_fullStr |
Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice |
title_full_unstemmed |
Optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice |
title_sort |
optical properties of aerosol particles in the atmospheric boundary layer in regions with and without sea ice |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16831 http://id.nii.ac.jp/1291/00016701/ |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Polar Science Polar Science Sea ice Southern Ocean |
genre_facet |
Polar Science Polar Science Sea ice Southern Ocean |
op_relation |
https://doi.org/10.1016/j.polar.2021.100704 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16831 http://id.nii.ac.jp/1291/00016701/ Polar Science, 29, 100704(2021-09) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2021.100704 |
container_title |
Polar Science |
container_volume |
29 |
container_start_page |
100704 |
_version_ |
1766173450814095360 |