Oceanographic regime shift during 1997 in Disko Bay, Western Greenland
Data from a long time series of temperature, salinity, and nutrient measurements in Disko Bay (West Greenland) reveal a marked change in the water characteristics during recent years. Seasonal dynamics in the upper 150 m of the water column were highly affected by the seasonality in meteorological c...
Published in: | Limnology and Oceanography |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2012
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Online Access: | https://orbit.dtu.dk/en/publications/45888c43-910f-4eb8-96c6-b44ec26c32ff https://doi.org/10.4319/lo.2012.57.2.0634 |
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ftdtupubl:oai:pure.atira.dk:publications/45888c43-910f-4eb8-96c6-b44ec26c32ff 2024-06-09T07:45:35+00:00 Oceanographic regime shift during 1997 in Disko Bay, Western Greenland Hansen, Marc Overgaard Nielsen, Torkel Gissel Stedmon, Colin A. Munk, Peter 2012 https://orbit.dtu.dk/en/publications/45888c43-910f-4eb8-96c6-b44ec26c32ff https://doi.org/10.4319/lo.2012.57.2.0634 eng eng https://orbit.dtu.dk/en/publications/45888c43-910f-4eb8-96c6-b44ec26c32ff info:eu-repo/semantics/closedAccess Hansen , M O , Nielsen , T G , Stedmon , C A & Munk , P 2012 , ' Oceanographic regime shift during 1997 in Disko Bay, Western Greenland ' , Limnology and Oceanography , vol. 57 , no. 2 , pp. 634-644 . https://doi.org/10.4319/lo.2012.57.2.0634 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2012 ftdtupubl https://doi.org/10.4319/lo.2012.57.2.0634 2024-05-15T00:00:42Z Data from a long time series of temperature, salinity, and nutrient measurements in Disko Bay (West Greenland) reveal a marked change in the water characteristics during recent years. Seasonal dynamics in the upper 150 m of the water column were highly affected by the seasonality in meteorological conditions, while the deeper water strata were more stable and were primarily influenced by large-scale circulation patterns. There was a marked increase in the average water temperatures at 200-m depth in spring 1997, with the long-term average increasing from 1.30uC to 2.25uC. Weekly data from 1996 to 1997 show that the sudden change in bottom water occurred in April 1997, due to the inflow of a larger proportion of North Atlantic water, which propagated north along the coast before entering the bay. Further support for this inflow was found when tracing the relative proportion of Atlantic water in the bay, using inorganic nutrients. These changes in the oceanography of the bay will not only lead to further glacial retreat but will also affect the local marine ecosystem by changing the relative dominance of major copepod species that overwinter in bottom waters of the bay Data from a long time series of temperature, salinity, and nutrient measurements in Disko Bay (West Greenland) reveal a marked change in the water characteristics during recent years. Seasonal dynamics in the upper 150 m of the water column were highly affected by the seasonality in meteorological conditions, while the deeper water strata were more stable and were primarily influenced by large-scale circulation patterns. There was a marked increase in the average water temperatures at 200-m depth in spring 1997, with the long-term average increasing from 1.30uC to 2.25uC. Weekly data from 1996 to 1997 show that the sudden change in bottom water occurred in April 1997, due to the inflow of a larger proportion of North Atlantic water, which propagated north along the coast before entering the bay. Further support for this inflow was found when ... Article in Journal/Newspaper Disko Bay Greenland North Atlantic Technical University of Denmark: DTU Orbit Greenland Limnology and Oceanography 57 2 634 644 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Hansen, Marc Overgaard Nielsen, Torkel Gissel Stedmon, Colin A. Munk, Peter Oceanographic regime shift during 1997 in Disko Bay, Western Greenland |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Data from a long time series of temperature, salinity, and nutrient measurements in Disko Bay (West Greenland) reveal a marked change in the water characteristics during recent years. Seasonal dynamics in the upper 150 m of the water column were highly affected by the seasonality in meteorological conditions, while the deeper water strata were more stable and were primarily influenced by large-scale circulation patterns. There was a marked increase in the average water temperatures at 200-m depth in spring 1997, with the long-term average increasing from 1.30uC to 2.25uC. Weekly data from 1996 to 1997 show that the sudden change in bottom water occurred in April 1997, due to the inflow of a larger proportion of North Atlantic water, which propagated north along the coast before entering the bay. Further support for this inflow was found when tracing the relative proportion of Atlantic water in the bay, using inorganic nutrients. These changes in the oceanography of the bay will not only lead to further glacial retreat but will also affect the local marine ecosystem by changing the relative dominance of major copepod species that overwinter in bottom waters of the bay Data from a long time series of temperature, salinity, and nutrient measurements in Disko Bay (West Greenland) reveal a marked change in the water characteristics during recent years. Seasonal dynamics in the upper 150 m of the water column were highly affected by the seasonality in meteorological conditions, while the deeper water strata were more stable and were primarily influenced by large-scale circulation patterns. There was a marked increase in the average water temperatures at 200-m depth in spring 1997, with the long-term average increasing from 1.30uC to 2.25uC. Weekly data from 1996 to 1997 show that the sudden change in bottom water occurred in April 1997, due to the inflow of a larger proportion of North Atlantic water, which propagated north along the coast before entering the bay. Further support for this inflow was found when ... |
format |
Article in Journal/Newspaper |
author |
Hansen, Marc Overgaard Nielsen, Torkel Gissel Stedmon, Colin A. Munk, Peter |
author_facet |
Hansen, Marc Overgaard Nielsen, Torkel Gissel Stedmon, Colin A. Munk, Peter |
author_sort |
Hansen, Marc Overgaard |
title |
Oceanographic regime shift during 1997 in Disko Bay, Western Greenland |
title_short |
Oceanographic regime shift during 1997 in Disko Bay, Western Greenland |
title_full |
Oceanographic regime shift during 1997 in Disko Bay, Western Greenland |
title_fullStr |
Oceanographic regime shift during 1997 in Disko Bay, Western Greenland |
title_full_unstemmed |
Oceanographic regime shift during 1997 in Disko Bay, Western Greenland |
title_sort |
oceanographic regime shift during 1997 in disko bay, western greenland |
publishDate |
2012 |
url |
https://orbit.dtu.dk/en/publications/45888c43-910f-4eb8-96c6-b44ec26c32ff https://doi.org/10.4319/lo.2012.57.2.0634 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Disko Bay Greenland North Atlantic |
genre_facet |
Disko Bay Greenland North Atlantic |
op_source |
Hansen , M O , Nielsen , T G , Stedmon , C A & Munk , P 2012 , ' Oceanographic regime shift during 1997 in Disko Bay, Western Greenland ' , Limnology and Oceanography , vol. 57 , no. 2 , pp. 634-644 . https://doi.org/10.4319/lo.2012.57.2.0634 |
op_relation |
https://orbit.dtu.dk/en/publications/45888c43-910f-4eb8-96c6-b44ec26c32ff |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.4319/lo.2012.57.2.0634 |
container_title |
Limnology and Oceanography |
container_volume |
57 |
container_issue |
2 |
container_start_page |
634 |
op_container_end_page |
644 |
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1801375026762481664 |