Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea
Understanding changes in Antarctic ice shelf basal melting is a major challenge for predicting future sea level. Currently, warm Circumpolar Deep Water surrounding Antarctica has limited access to the Weddell Sea continental shelf; consequently, melt rates at Filchner‐Ronne Ice Shelf are low. Howeve...
Published in: | Geophysical Research Letters |
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Online Access: | https://epic.awi.de/id/eprint/53300/ https://epic.awi.de/id/eprint/53300/1/2020GL089237.pdf https://doi.org/10.1029/2020GL089237 https://hdl.handle.net/10013/epic.775271a1-8c91-4d85-badd-098f175cb271 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:53300 2023-05-15T13:45:22+02:00 Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea Daae, K. Hattermann, T. Darelius, E. Mueller, R. D. Naughten, K. A. Timmermann, R. Hellmer, H. H. 2020 application/pdf https://epic.awi.de/id/eprint/53300/ https://epic.awi.de/id/eprint/53300/1/2020GL089237.pdf https://doi.org/10.1029/2020GL089237 https://hdl.handle.net/10013/epic.775271a1-8c91-4d85-badd-098f175cb271 https://hdl.handle.net/ unknown Wiley https://epic.awi.de/id/eprint/53300/1/2020GL089237.pdf https://hdl.handle.net/ Daae, K. , Hattermann, T. , Darelius, E. , Mueller, R. D. , Naughten, K. A. , Timmermann, R. and Hellmer, H. H. orcid:0000-0002-9357-9853 (2020) Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea , Geophysical Research Letters, 47 (22), pp. 1-11 . doi:10.1029/2020GL089237 <https://doi.org/10.1029/2020GL089237> , hdl:10013/epic.775271a1-8c91-4d85-badd-098f175cb271 EPIC3Geophysical Research Letters, Wiley, 47(22), pp. 1-11, ISSN: 0094-8276 Article isiRev 2020 ftawi https://doi.org/10.1029/2020GL089237 2021-12-24T15:46:01Z Understanding changes in Antarctic ice shelf basal melting is a major challenge for predicting future sea level. Currently, warm Circumpolar Deep Water surrounding Antarctica has limited access to the Weddell Sea continental shelf; consequently, melt rates at Filchner‐Ronne Ice Shelf are low. However, large‐scale model projections suggest that changes to the Antarctic Slope Front and the coastal circulation may enhance warm inflows within this century. We use a regional high‐resolution ice shelf cavity and ocean circulation model to explore forcing changes that may trigger this regime shift. Our results suggest two necessary conditions for supporting a sustained warm inflow into the Filchner Ice Shelf cavity: (i) an extreme relaxation of the Antarctic Slope Front density gradient and (ii) substantial freshening of the dense shelf water. We also find that the on‐shelf transport over the western Weddell Sea shelf is sensitive to the Filchner Trough overflow characteristics. Article in Journal/Newspaper Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic Weddell Sea Weddell Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Filchner Trough ENVELOPE(-36.000,-36.000,-77.000,-77.000) Filchner Ice Shelf ENVELOPE(-40.000,-40.000,-79.000,-79.000) Geophysical Research Letters 47 22 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Understanding changes in Antarctic ice shelf basal melting is a major challenge for predicting future sea level. Currently, warm Circumpolar Deep Water surrounding Antarctica has limited access to the Weddell Sea continental shelf; consequently, melt rates at Filchner‐Ronne Ice Shelf are low. However, large‐scale model projections suggest that changes to the Antarctic Slope Front and the coastal circulation may enhance warm inflows within this century. We use a regional high‐resolution ice shelf cavity and ocean circulation model to explore forcing changes that may trigger this regime shift. Our results suggest two necessary conditions for supporting a sustained warm inflow into the Filchner Ice Shelf cavity: (i) an extreme relaxation of the Antarctic Slope Front density gradient and (ii) substantial freshening of the dense shelf water. We also find that the on‐shelf transport over the western Weddell Sea shelf is sensitive to the Filchner Trough overflow characteristics. |
format |
Article in Journal/Newspaper |
author |
Daae, K. Hattermann, T. Darelius, E. Mueller, R. D. Naughten, K. A. Timmermann, R. Hellmer, H. H. |
spellingShingle |
Daae, K. Hattermann, T. Darelius, E. Mueller, R. D. Naughten, K. A. Timmermann, R. Hellmer, H. H. Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea |
author_facet |
Daae, K. Hattermann, T. Darelius, E. Mueller, R. D. Naughten, K. A. Timmermann, R. Hellmer, H. H. |
author_sort |
Daae, K. |
title |
Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea |
title_short |
Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea |
title_full |
Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea |
title_fullStr |
Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea |
title_full_unstemmed |
Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea |
title_sort |
necessary conditions for warm inflow toward the filchner ice shelf, weddell sea |
publisher |
Wiley |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/53300/ https://epic.awi.de/id/eprint/53300/1/2020GL089237.pdf https://doi.org/10.1029/2020GL089237 https://hdl.handle.net/10013/epic.775271a1-8c91-4d85-badd-098f175cb271 https://hdl.handle.net/ |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-36.000,-36.000,-77.000,-77.000) ENVELOPE(-40.000,-40.000,-79.000,-79.000) |
geographic |
Antarctic The Antarctic Weddell Sea Weddell Ronne Ice Shelf Filchner Trough Filchner Ice Shelf |
geographic_facet |
Antarctic The Antarctic Weddell Sea Weddell Ronne Ice Shelf Filchner Trough Filchner Ice Shelf |
genre |
Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ronne Ice Shelf Weddell Sea |
op_source |
EPIC3Geophysical Research Letters, Wiley, 47(22), pp. 1-11, ISSN: 0094-8276 |
op_relation |
https://epic.awi.de/id/eprint/53300/1/2020GL089237.pdf https://hdl.handle.net/ Daae, K. , Hattermann, T. , Darelius, E. , Mueller, R. D. , Naughten, K. A. , Timmermann, R. and Hellmer, H. H. orcid:0000-0002-9357-9853 (2020) Necessary Conditions for Warm Inflow Toward the Filchner Ice Shelf, Weddell Sea , Geophysical Research Letters, 47 (22), pp. 1-11 . doi:10.1029/2020GL089237 <https://doi.org/10.1029/2020GL089237> , hdl:10013/epic.775271a1-8c91-4d85-badd-098f175cb271 |
op_doi |
https://doi.org/10.1029/2020GL089237 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
22 |
_version_ |
1766222293399240704 |