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Intense ocean freshening from melting glacier around the Antarctica during early twenty-first century
| Title: | Intense ocean freshening from melting glacier around the Antarctica during early twenty-first century |
| Authors: | Pan, Xianliang L. Browse this author | | Li, Bofeng F. Browse this author | | Watanabe, Yutaka W. Browse this author →KAKEN DB |
| Issue Date: | 10-Jan-2022 |
| Publisher: | Nature Portfolio |
| Journal Title: | Scientific Reports |
| Volume: | 12 |
| Issue: | 1 |
| Start Page: | 383 |
| Publisher DOI: | 10.1038/s41598-021-04231-6 |
| Abstract: | With the accelerating mass loss of Antarctic ice sheets, the freshening of the Southern Ocean coastal oceans (SOc, seas around Antarctica) is gradually intensifying, which will reduce the formation of bottom water and weaken the meridional overturning circulation, thus having a significant negative impact on the ocean's role in regulating global climate. Due to the extreme environment of the Southern Ocean and the limitations of observational techniques, our understanding of the glacier-derived freshening of SOc is still vague. We developed a method that first provided us with an expansive understanding of glacier-derived freshening progress over the SOc. Applying this method to the observational data in the SOc from 1926 to 2016, revealed that the rate of glacier-derived freshwater input reached a maximum of 268 ± 134 Gt year(-1) during the early twenty-first century. Our results indicate that during the same period, glacier melting accounted for 63%, 28%, and 92% of the total freshening occurred in the Atlantic, Indian, and Pacific sectors of the SOc, respectively. This suggests that the ice shelf basal melt in West Antarctica and the Antarctic Peninsula plays a dominant role in the freshening of the surrounding seas. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/84295 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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