Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross Sea
The potential ice core proxies of variability in oceanic and atmospheric conditions over the Ross Sea were evaluated. This study examined sea salt sodium (ss–Na+) and biogenic sulfur (methanesulfonate, MS–) records, covering 23 years between 1990 and 2012, from two firn cores drilled on the Styx Gla...
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.896470/full |
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| author | Seokhyun Ro Seokhyun Ro Sang-Bum Hong Joo-Hong Kim Yeongcheol Han Soon Do Hur Jung-Ho Kang Songyi Kim Songyi Kim Changkyu Lim Chaewon Chang Jangil Moon Seong-Joong Kim Sungmin Hong |
| author_facet | Seokhyun Ro Seokhyun Ro Sang-Bum Hong Joo-Hong Kim Yeongcheol Han Soon Do Hur Jung-Ho Kang Songyi Kim Songyi Kim Changkyu Lim Chaewon Chang Jangil Moon Seong-Joong Kim Sungmin Hong |
| author_sort | Seokhyun Ro |
| collection | DOAJ |
| description | The potential ice core proxies of variability in oceanic and atmospheric conditions over the Ross Sea were evaluated. This study examined sea salt sodium (ss–Na+) and biogenic sulfur (methanesulfonate, MS–) records, covering 23 years between 1990 and 2012, from two firn cores drilled on the Styx Glacier plateau (SGP), northern Victoria Land, East Antarctica, to examine the potential links between those records and datasets for various climate variables. The comparison showed that the interannual variability of the ss–Na+ record is closely related to Pacific–South American mode 2 (PSA2) in the Ross Sea sector, exhibiting an increased ss–Na+ flux, owing most likely to more frequent penetration of maritime air masses from the western Ross Sea to the SGP when the winter/spring PSA2 mode becomes more pronounced. The observed MS– record revealed statistically significant positive correlations with the changes in the summertime chlorophyll a concentration in the Ross Sea polynya (RSP) and wind speed in the southern Ross Sea region. This indicates the dominant role of a combination of changes in the summertime primary productivity and wind speed over the RSP in modulating the MS– deposition flux at the SGP. These results highlight the suitability of the ss–Na+ and MS– records from the SGP as proxies for characterizing the dominant patterns of variability in oceanic and atmospheric conditions and their underlying mechanisms on interannual and longer timescales beyond the instrumental limits over the Ross Sea region. |
| first_indexed | 2024-12-10T15:20:30Z |
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| id | doaj.art-807dce82735847e08f08a480cef77e0c |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-12-10T15:20:30Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-807dce82735847e08f08a480cef77e0c2022-12-22T01:43:41ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632022-09-011010.3389/feart.2022.896470896470Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross SeaSeokhyun Ro0Seokhyun Ro1Sang-Bum Hong2Joo-Hong Kim3Yeongcheol Han4Soon Do Hur5Jung-Ho Kang6Songyi Kim7Songyi Kim8Changkyu Lim9Chaewon Chang10Jangil Moon11Seong-Joong Kim12Sungmin Hong13Department of Ocean Sciences, College of Natural Sciences, Inha University, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaDepartment of Science Education, Ewha Womans University, Seoul, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaKorea Polar Research Institute, Incheon, South KoreaDepartment of Ocean Sciences, College of Natural Sciences, Inha University, Incheon, South KoreaThe potential ice core proxies of variability in oceanic and atmospheric conditions over the Ross Sea were evaluated. This study examined sea salt sodium (ss–Na+) and biogenic sulfur (methanesulfonate, MS–) records, covering 23 years between 1990 and 2012, from two firn cores drilled on the Styx Glacier plateau (SGP), northern Victoria Land, East Antarctica, to examine the potential links between those records and datasets for various climate variables. The comparison showed that the interannual variability of the ss–Na+ record is closely related to Pacific–South American mode 2 (PSA2) in the Ross Sea sector, exhibiting an increased ss–Na+ flux, owing most likely to more frequent penetration of maritime air masses from the western Ross Sea to the SGP when the winter/spring PSA2 mode becomes more pronounced. The observed MS– record revealed statistically significant positive correlations with the changes in the summertime chlorophyll a concentration in the Ross Sea polynya (RSP) and wind speed in the southern Ross Sea region. This indicates the dominant role of a combination of changes in the summertime primary productivity and wind speed over the RSP in modulating the MS– deposition flux at the SGP. These results highlight the suitability of the ss–Na+ and MS– records from the SGP as proxies for characterizing the dominant patterns of variability in oceanic and atmospheric conditions and their underlying mechanisms on interannual and longer timescales beyond the instrumental limits over the Ross Sea region.https://www.frontiersin.org/articles/10.3389/feart.2022.896470/fullRoss SeaStyx firn coressea salt sodiummethanesulfonatePacific–South American modeRoss Sea polynya |
| spellingShingle | Seokhyun Ro Seokhyun Ro Sang-Bum Hong Joo-Hong Kim Yeongcheol Han Soon Do Hur Jung-Ho Kang Songyi Kim Songyi Kim Changkyu Lim Chaewon Chang Jangil Moon Seong-Joong Kim Sungmin Hong Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross Sea Frontiers in Earth Science Ross Sea Styx firn cores sea salt sodium methanesulfonate Pacific–South American mode Ross Sea polynya |
| title | Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross Sea |
| title_full | Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross Sea |
| title_fullStr | Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross Sea |
| title_full_unstemmed | Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross Sea |
| title_short | Variability of sea salt and methanesulfonate in firn cores from northern Victoria Land, Antarctica: Their links to oceanic and atmospheric condition variability in the Ross Sea |
| title_sort | variability of sea salt and methanesulfonate in firn cores from northern victoria land antarctica their links to oceanic and atmospheric condition variability in the ross sea |
| topic | Ross Sea Styx firn cores sea salt sodium methanesulfonate Pacific–South American mode Ross Sea polynya |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.896470/full |
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