Sources and distribution of fresh water around Cape Farewell in 2014
We investigate the origin of freshwater on the shelves near Cape Farewell (south Greenland) using sections of three hydrographic cruises in May (HUD2014007) and June 2014 (JR302 and Geovide) 2014. We partition the freshwater between meteoric water sources and sea ice melt or brine formation using th...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/526125/ https://nora.nerc.ac.uk/id/eprint/526125/1/Benetti_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://nora.nerc.ac.uk/id/eprint/526125/7/68413.pdf https://doi.org/10.1029/2019JC015080 |
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ftnerc:oai:nora.nerc.ac.uk:526125 2023-05-15T15:51:48+02:00 Sources and distribution of fresh water around Cape Farewell in 2014 Benetti, M. Reverdin, G. Clarke, J.S. Tynan, E. Holliday, N.P. Torres‐Valdes, S. Lherminier, P. Yashayaev, I. 2019-12-01 text http://nora.nerc.ac.uk/id/eprint/526125/ https://nora.nerc.ac.uk/id/eprint/526125/1/Benetti_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://nora.nerc.ac.uk/id/eprint/526125/7/68413.pdf https://doi.org/10.1029/2019JC015080 en eng https://nora.nerc.ac.uk/id/eprint/526125/1/Benetti_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://nora.nerc.ac.uk/id/eprint/526125/7/68413.pdf Benetti, M.; Reverdin, G.; Clarke, J.S.; Tynan, E.; Holliday, N.P. orcid:0000-0002-9733-8002 Torres‐Valdes, S.; Lherminier, P.; Yashayaev, I. 2019 Sources and distribution of fresh water around Cape Farewell in 2014. Journal of Geophysical Research: Oceans, 124 (12). 9404-9416. https://doi.org/10.1029/2019JC015080 <https://doi.org/10.1029/2019JC015080> cc_by_4 CC-BY Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1029/2019JC015080 2023-02-04T19:49:47Z We investigate the origin of freshwater on the shelves near Cape Farewell (south Greenland) using sections of three hydrographic cruises in May (HUD2014007) and June 2014 (JR302 and Geovide) 2014. We partition the freshwater between meteoric water sources and sea ice melt or brine formation using the δ18O of sea water. The sections illustrate the presence of the East Greenland Coastal Current (EGCC) close to shore east of Cape Farewell. West of Cape Farewell, it partially joins the shelf break, with a weaker near‐surface remnant of the EGCC observed on the shelf southwest and west of Cape Farewell. The EGCC traps the freshest waters close to Greenland, and carries a brine signature below 50m depth. The cruises illustrate a strong increase in meteoric water of the shelf upper layer (by more than a factor 2) between early May and late June, likely to result from East and South Greenland spring melt. There was also a contribution of sea ice melt near the surface but with large variability both spatially and also between the two June cruises. Furthermore, gradients in the freshwater distribution and its contributions are larger east of Cape Farewell than west of Cape Farewell, which is related to the East Greenland Coastal Current being more intense and closer to the coast east of Cape Farewell than west of it. Large temporal variability in the currents is found between different sections to the east and south‐east of Cape Farewell, likely related to changes in wind conditions. Article in Journal/Newspaper Cape Farewell East Greenland Greenland Sea ice Natural Environment Research Council: NERC Open Research Archive Greenland Journal of Geophysical Research: Oceans 124 12 9404 9416 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
We investigate the origin of freshwater on the shelves near Cape Farewell (south Greenland) using sections of three hydrographic cruises in May (HUD2014007) and June 2014 (JR302 and Geovide) 2014. We partition the freshwater between meteoric water sources and sea ice melt or brine formation using the δ18O of sea water. The sections illustrate the presence of the East Greenland Coastal Current (EGCC) close to shore east of Cape Farewell. West of Cape Farewell, it partially joins the shelf break, with a weaker near‐surface remnant of the EGCC observed on the shelf southwest and west of Cape Farewell. The EGCC traps the freshest waters close to Greenland, and carries a brine signature below 50m depth. The cruises illustrate a strong increase in meteoric water of the shelf upper layer (by more than a factor 2) between early May and late June, likely to result from East and South Greenland spring melt. There was also a contribution of sea ice melt near the surface but with large variability both spatially and also between the two June cruises. Furthermore, gradients in the freshwater distribution and its contributions are larger east of Cape Farewell than west of Cape Farewell, which is related to the East Greenland Coastal Current being more intense and closer to the coast east of Cape Farewell than west of it. Large temporal variability in the currents is found between different sections to the east and south‐east of Cape Farewell, likely related to changes in wind conditions. |
format |
Article in Journal/Newspaper |
author |
Benetti, M. Reverdin, G. Clarke, J.S. Tynan, E. Holliday, N.P. Torres‐Valdes, S. Lherminier, P. Yashayaev, I. |
spellingShingle |
Benetti, M. Reverdin, G. Clarke, J.S. Tynan, E. Holliday, N.P. Torres‐Valdes, S. Lherminier, P. Yashayaev, I. Sources and distribution of fresh water around Cape Farewell in 2014 |
author_facet |
Benetti, M. Reverdin, G. Clarke, J.S. Tynan, E. Holliday, N.P. Torres‐Valdes, S. Lherminier, P. Yashayaev, I. |
author_sort |
Benetti, M. |
title |
Sources and distribution of fresh water around Cape Farewell in 2014 |
title_short |
Sources and distribution of fresh water around Cape Farewell in 2014 |
title_full |
Sources and distribution of fresh water around Cape Farewell in 2014 |
title_fullStr |
Sources and distribution of fresh water around Cape Farewell in 2014 |
title_full_unstemmed |
Sources and distribution of fresh water around Cape Farewell in 2014 |
title_sort |
sources and distribution of fresh water around cape farewell in 2014 |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/526125/ https://nora.nerc.ac.uk/id/eprint/526125/1/Benetti_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://nora.nerc.ac.uk/id/eprint/526125/7/68413.pdf https://doi.org/10.1029/2019JC015080 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Cape Farewell East Greenland Greenland Sea ice |
genre_facet |
Cape Farewell East Greenland Greenland Sea ice |
op_relation |
https://nora.nerc.ac.uk/id/eprint/526125/1/Benetti_et_al-2019-Journal_of_Geophysical_Research__Oceans.pdf https://nora.nerc.ac.uk/id/eprint/526125/7/68413.pdf Benetti, M.; Reverdin, G.; Clarke, J.S.; Tynan, E.; Holliday, N.P. orcid:0000-0002-9733-8002 Torres‐Valdes, S.; Lherminier, P.; Yashayaev, I. 2019 Sources and distribution of fresh water around Cape Farewell in 2014. Journal of Geophysical Research: Oceans, 124 (12). 9404-9416. https://doi.org/10.1029/2019JC015080 <https://doi.org/10.1029/2019JC015080> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2019JC015080 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
124 |
container_issue |
12 |
container_start_page |
9404 |
op_container_end_page |
9416 |
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1766387190817882112 |