High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland
Aerosols significantly affect Earth's radiation budget, thus influencing global climate. In the Arctic, sulfate aerosols are thought to have reduced the warming during the twentieth century. However, trends in past sulfate aerosols are poorly known, especially the aerosol sizes and compositions...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | http://hdl.handle.net/2115/86854 https://doi.org/10.1029/2022JD036880 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/86854 2023-05-15T13:11:34+02:00 High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland Iizuka, Y. Uemura, R. Matsui, H. Oshima, N. Kawakami, K. Hattori, S. Ohno, H. Matoba, S. http://hdl.handle.net/2115/86854 https://doi.org/10.1029/2022JD036880 eng eng American Geophysical Union Data set used in this article http://hdl.handle.net/2115/86374 http://hdl.handle.net/2115/86854 Journal of geophysical research atmospheres, 127(17): e2022JD036880 http://dx.doi.org/10.1029/2022JD036880 https://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND ice core aerosol Greenland anthropogenic sulfate maximum 450 article fthokunivhus https://doi.org/10.1029/2022JD036880 2022-11-18T01:07:06Z Aerosols significantly affect Earth's radiation budget, thus influencing global climate. In the Arctic, sulfate aerosols are thought to have reduced the warming during the twentieth century. However, trends in past sulfate aerosols are poorly known, especially the aerosol sizes and compositions. Here, we analyze a high-resolution ice core from southeastern Greenland, comparing the seasonal deposition flux of large sulfate salt particles and small sulfur compounds, including non-neutralized sulfuric acid, between the anthropogenic sulfate maximum (1973-1975) and after sulfur emissions control (2010-2012). Between these periods, we find that the large-diameter (>0.4 mu m) flux remains roughly unchanged, yet the small-diameter (<0.4 mu m) aerosol flux significantly decreases. The results indicate that small sulfates were efficiently activated as cloud condensation nuclei during the 1970s, and thus likely increased cloud albedo, offsetting the warming. Article in Journal/Newspaper albedo Arctic Greenland ice core Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Arctic Greenland Journal of Geophysical Research: Atmospheres 127 17 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
ice core aerosol Greenland anthropogenic sulfate maximum 450 |
spellingShingle |
ice core aerosol Greenland anthropogenic sulfate maximum 450 Iizuka, Y. Uemura, R. Matsui, H. Oshima, N. Kawakami, K. Hattori, S. Ohno, H. Matoba, S. High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland |
topic_facet |
ice core aerosol Greenland anthropogenic sulfate maximum 450 |
description |
Aerosols significantly affect Earth's radiation budget, thus influencing global climate. In the Arctic, sulfate aerosols are thought to have reduced the warming during the twentieth century. However, trends in past sulfate aerosols are poorly known, especially the aerosol sizes and compositions. Here, we analyze a high-resolution ice core from southeastern Greenland, comparing the seasonal deposition flux of large sulfate salt particles and small sulfur compounds, including non-neutralized sulfuric acid, between the anthropogenic sulfate maximum (1973-1975) and after sulfur emissions control (2010-2012). Between these periods, we find that the large-diameter (>0.4 mu m) flux remains roughly unchanged, yet the small-diameter (<0.4 mu m) aerosol flux significantly decreases. The results indicate that small sulfates were efficiently activated as cloud condensation nuclei during the 1970s, and thus likely increased cloud albedo, offsetting the warming. |
format |
Article in Journal/Newspaper |
author |
Iizuka, Y. Uemura, R. Matsui, H. Oshima, N. Kawakami, K. Hattori, S. Ohno, H. Matoba, S. |
author_facet |
Iizuka, Y. Uemura, R. Matsui, H. Oshima, N. Kawakami, K. Hattori, S. Ohno, H. Matoba, S. |
author_sort |
Iizuka, Y. |
title |
High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland |
title_short |
High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland |
title_full |
High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland |
title_fullStr |
High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland |
title_full_unstemmed |
High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland |
title_sort |
high flux of small sulfate aerosols during the 1970s reconstructed from the se-dome ice core in greenland |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/2115/86854 https://doi.org/10.1029/2022JD036880 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
albedo Arctic Greenland ice core |
genre_facet |
albedo Arctic Greenland ice core |
op_relation |
Data set used in this article http://hdl.handle.net/2115/86374 http://hdl.handle.net/2115/86854 Journal of geophysical research atmospheres, 127(17): e2022JD036880 http://dx.doi.org/10.1029/2022JD036880 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1029/2022JD036880 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
127 |
container_issue |
17 |
_version_ |
1766248000214007808 |