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Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier
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| Zeitschriftentitel: | Geophysical Research Letters |
|---|---|
| Personen und Körperschaften: | , , , , , , , , , , |
| In: | Geophysical Research Letters, 48, 2021, 17 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
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| Schlagwörter: |
| author_facet |
Nakayama, Yoshihiro Greene, Chad A. Paolo, Fernando S. Mensah, Vigan Zhang, Hong Kashiwase, Haruhiko Simizu, Daisuke Greenbaum, Jamin S. Blankenship, Donald D. Abe‐Ouchi, Ayako Aoki, Shigeru Nakayama, Yoshihiro Greene, Chad A. Paolo, Fernando S. Mensah, Vigan Zhang, Hong Kashiwase, Haruhiko Simizu, Daisuke Greenbaum, Jamin S. Blankenship, Donald D. Abe‐Ouchi, Ayako Aoki, Shigeru |
|---|---|
| author |
Nakayama, Yoshihiro Greene, Chad A. Paolo, Fernando S. Mensah, Vigan Zhang, Hong Kashiwase, Haruhiko Simizu, Daisuke Greenbaum, Jamin S. Blankenship, Donald D. Abe‐Ouchi, Ayako Aoki, Shigeru |
| spellingShingle |
Nakayama, Yoshihiro Greene, Chad A. Paolo, Fernando S. Mensah, Vigan Zhang, Hong Kashiwase, Haruhiko Simizu, Daisuke Greenbaum, Jamin S. Blankenship, Donald D. Abe‐Ouchi, Ayako Aoki, Shigeru Geophysical Research Letters Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier General Earth and Planetary Sciences Geophysics |
| author_sort |
nakayama, yoshihiro |
| spelling |
Nakayama, Yoshihiro Greene, Chad A. Paolo, Fernando S. Mensah, Vigan Zhang, Hong Kashiwase, Haruhiko Simizu, Daisuke Greenbaum, Jamin S. Blankenship, Donald D. Abe‐Ouchi, Ayako Aoki, Shigeru 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2021gl094149 <jats:title>Abstract</jats:title><jats:p>The Totten ice shelf (TIS) in East Antarctica has received increasing attention in recent years due to high basal melt rates, which have been linked to a presence of warm modified Circumpolar Deep Water (mCDW) observed at the ice front. We show that mCDW on‐shelf intrusions towards the TIS strengthen when the Antarctic Slope Current (ASC) weakens. This demonstrates that the ASC has a blocking effect and ASC weakening leads to on‐shelf intrusions, as proposed by previous observational studies. The interannual variability of the ASC is controlled primarily by atmospheric and oceanic conditions beyond our regional model domain. We further show that heat intrusions onto the continental shelf off the TIS are not influenced by off‐shelf warming but are enhanced with coastal freshening, suggesting positive feedback whereby ice melt and freshening upstream could start a chain reaction, leading to increased melt, and further coastal freshening.</jats:p> Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier Geophysical Research Letters |
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10.1029/2021gl094149 |
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| title |
Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_unstemmed |
Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_full |
Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_fullStr |
Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_full_unstemmed |
Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_short |
Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_sort |
antarctic slope current modulates ocean heat intrusions towards totten glacier |
| topic |
General Earth and Planetary Sciences Geophysics |
| url |
http://dx.doi.org/10.1029/2021gl094149 |
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2021 |
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<jats:title>Abstract</jats:title><jats:p>The Totten ice shelf (TIS) in East Antarctica has received increasing attention in recent years due to high basal melt rates, which have been linked to a presence of warm modified Circumpolar Deep Water (mCDW) observed at the ice front. We show that mCDW on‐shelf intrusions towards the TIS strengthen when the Antarctic Slope Current (ASC) weakens. This demonstrates that the ASC has a blocking effect and ASC weakening leads to on‐shelf intrusions, as proposed by previous observational studies. The interannual variability of the ASC is controlled primarily by atmospheric and oceanic conditions beyond our regional model domain. We further show that heat intrusions onto the continental shelf off the TIS are not influenced by off‐shelf warming but are enhanced with coastal freshening, suggesting positive feedback whereby ice melt and freshening upstream could start a chain reaction, leading to increased melt, and further coastal freshening.</jats:p> |
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| author | Nakayama, Yoshihiro, Greene, Chad A., Paolo, Fernando S., Mensah, Vigan, Zhang, Hong, Kashiwase, Haruhiko, Simizu, Daisuke, Greenbaum, Jamin S., Blankenship, Donald D., Abe‐Ouchi, Ayako, Aoki, Shigeru |
| author_facet | Nakayama, Yoshihiro, Greene, Chad A., Paolo, Fernando S., Mensah, Vigan, Zhang, Hong, Kashiwase, Haruhiko, Simizu, Daisuke, Greenbaum, Jamin S., Blankenship, Donald D., Abe‐Ouchi, Ayako, Aoki, Shigeru, Nakayama, Yoshihiro, Greene, Chad A., Paolo, Fernando S., Mensah, Vigan, Zhang, Hong, Kashiwase, Haruhiko, Simizu, Daisuke, Greenbaum, Jamin S., Blankenship, Donald D., Abe‐Ouchi, Ayako, Aoki, Shigeru |
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| description | <jats:title>Abstract</jats:title><jats:p>The Totten ice shelf (TIS) in East Antarctica has received increasing attention in recent years due to high basal melt rates, which have been linked to a presence of warm modified Circumpolar Deep Water (mCDW) observed at the ice front. We show that mCDW on‐shelf intrusions towards the TIS strengthen when the Antarctic Slope Current (ASC) weakens. This demonstrates that the ASC has a blocking effect and ASC weakening leads to on‐shelf intrusions, as proposed by previous observational studies. The interannual variability of the ASC is controlled primarily by atmospheric and oceanic conditions beyond our regional model domain. We further show that heat intrusions onto the continental shelf off the TIS are not influenced by off‐shelf warming but are enhanced with coastal freshening, suggesting positive feedback whereby ice melt and freshening upstream could start a chain reaction, leading to increased melt, and further coastal freshening.</jats:p> |
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| spelling | Nakayama, Yoshihiro Greene, Chad A. Paolo, Fernando S. Mensah, Vigan Zhang, Hong Kashiwase, Haruhiko Simizu, Daisuke Greenbaum, Jamin S. Blankenship, Donald D. Abe‐Ouchi, Ayako Aoki, Shigeru 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2021gl094149 <jats:title>Abstract</jats:title><jats:p>The Totten ice shelf (TIS) in East Antarctica has received increasing attention in recent years due to high basal melt rates, which have been linked to a presence of warm modified Circumpolar Deep Water (mCDW) observed at the ice front. We show that mCDW on‐shelf intrusions towards the TIS strengthen when the Antarctic Slope Current (ASC) weakens. This demonstrates that the ASC has a blocking effect and ASC weakening leads to on‐shelf intrusions, as proposed by previous observational studies. The interannual variability of the ASC is controlled primarily by atmospheric and oceanic conditions beyond our regional model domain. We further show that heat intrusions onto the continental shelf off the TIS are not influenced by off‐shelf warming but are enhanced with coastal freshening, suggesting positive feedback whereby ice melt and freshening upstream could start a chain reaction, leading to increased melt, and further coastal freshening.</jats:p> Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier Geophysical Research Letters |
| spellingShingle | Nakayama, Yoshihiro, Greene, Chad A., Paolo, Fernando S., Mensah, Vigan, Zhang, Hong, Kashiwase, Haruhiko, Simizu, Daisuke, Greenbaum, Jamin S., Blankenship, Donald D., Abe‐Ouchi, Ayako, Aoki, Shigeru, Geophysical Research Letters, Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier, General Earth and Planetary Sciences, Geophysics |
| title | Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_full | Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_fullStr | Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_full_unstemmed | Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_short | Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| title_sort | antarctic slope current modulates ocean heat intrusions towards totten glacier |
| title_unstemmed | Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier |
| topic | General Earth and Planetary Sciences, Geophysics |
| url | http://dx.doi.org/10.1029/2021gl094149 |