Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas
Sea surface temperature (SST) in the Northeastern North Atlantic and Nordic Seas exhibits pronounced variability across seasonal to decadal time scales. These changes can be expected to be driven by a combination of altered local conditions, shifts in seasonality and large scale regional oceanograph...
Published in: | Journal of Geophysical Research: Oceans |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2022
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Online Access: | https://orbit.dtu.dk/en/publications/c5df10d8-4477-4110-96bd-8e72034dc1a9 https://doi.org/10.1029/2022JC018630 https://backend.orbit.dtu.dk/ws/files/282620527/BERAT_JGR_Oceans_2022_Saes_Separating_annual_interannual_and_regional_change_in_Sea_Surface_Temperature_in_the.pdf https://backend.orbit.dtu.dk/ws/files/283328783/JGR_Oceans_2022_Saes_Separating_Annual_Interannual_and_Regional_Change_in_Sea_Surface_Temperature_in_the.pdf https://doi.org/10.11583/DTU.19316264.v2 |
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ftdtupubl:oai:pure.atira.dk:publications/c5df10d8-4477-4110-96bd-8e72034dc1a9 2024-06-23T07:50:40+00:00 Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas Saes, Mischa J. M. Gjelstrup, Caroline V. B. Visser, Andre W. Stedmon, Colin A. 2022 application/pdf https://orbit.dtu.dk/en/publications/c5df10d8-4477-4110-96bd-8e72034dc1a9 https://doi.org/10.1029/2022JC018630 https://backend.orbit.dtu.dk/ws/files/282620527/BERAT_JGR_Oceans_2022_Saes_Separating_annual_interannual_and_regional_change_in_Sea_Surface_Temperature_in_the.pdf https://backend.orbit.dtu.dk/ws/files/283328783/JGR_Oceans_2022_Saes_Separating_Annual_Interannual_and_Regional_Change_in_Sea_Surface_Temperature_in_the.pdf https://doi.org/10.11583/DTU.19316264.v2 eng eng https://orbit.dtu.dk/en/publications/c5df10d8-4477-4110-96bd-8e72034dc1a9 info:eu-repo/semantics/openAccess Saes , M J M , Gjelstrup , C V B , Visser , A W & Stedmon , C A 2022 , ' Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas ' , Journal of Geophysical Research: Oceans , vol. 127 , no. 8 , e2022JC018630 . https://doi.org/10.1029/2022JC018630 SST Temperature Nordic Seas Climate Arctic North Atlantic article 2022 ftdtupubl https://doi.org/10.1029/2022JC01863010.11583/DTU.19316264.v2 2024-06-11T15:12:17Z Sea surface temperature (SST) in the Northeastern North Atlantic and Nordic Seas exhibits pronounced variability across seasonal to decadal time scales. These changes can be expected to be driven by a combination of altered local conditions, shifts in seasonality and large scale regional oceanographic change. Separating the contribution from each of these offers insight into how the region is changing. Here, we present the result of an analysis of weekly satellite derived SST data from 1979 to 2020. An empirical orthogonal function (EOF) analysis allows us to separate observed changes in SST into independent underlying timeseries. Each timeseries explains part of the variability in SST. EOF1 can be allocated with changes in seasonality and a long-term warming trend, with summer maxima warming with twice the rate (0.043 °C yr -1 ) compared to winter minima (0.023 °C yr -1 ). EOF2 is associated with the North Atlantic subpolar gyre and the North Atlantic Oscillation, affecting the Atlantic Water flow across the Greenland-Scotland Ridge, imposing a di-pole cooling/warming pattern. Local sea-ice melt along the southeast Greenland shelf is represented by EOF3, and finally the influx of warmer water with the North Icelandic Irminger Current is captured by EOF4. Each of these disaggregated signals differ considerably in their contribution to driving temporal and spatial trends in SST. The isolated signals offer a high-resolution long time series of valuable indicators of oceanographic change which will likely be reflected in biogeochemistry, plankton, fish, mammals, and seabirds in the region. Article in Journal/Newspaper Arctic Greenland Greenland-Scotland Ridge Nordic Seas North Atlantic North Atlantic oscillation North Icelandic Irminger Current Sea ice Technical University of Denmark: DTU Orbit Arctic Greenland Journal of Geophysical Research: Oceans 127 8 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
SST Temperature Nordic Seas Climate Arctic North Atlantic |
spellingShingle |
SST Temperature Nordic Seas Climate Arctic North Atlantic Saes, Mischa J. M. Gjelstrup, Caroline V. B. Visser, Andre W. Stedmon, Colin A. Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas |
topic_facet |
SST Temperature Nordic Seas Climate Arctic North Atlantic |
description |
Sea surface temperature (SST) in the Northeastern North Atlantic and Nordic Seas exhibits pronounced variability across seasonal to decadal time scales. These changes can be expected to be driven by a combination of altered local conditions, shifts in seasonality and large scale regional oceanographic change. Separating the contribution from each of these offers insight into how the region is changing. Here, we present the result of an analysis of weekly satellite derived SST data from 1979 to 2020. An empirical orthogonal function (EOF) analysis allows us to separate observed changes in SST into independent underlying timeseries. Each timeseries explains part of the variability in SST. EOF1 can be allocated with changes in seasonality and a long-term warming trend, with summer maxima warming with twice the rate (0.043 °C yr -1 ) compared to winter minima (0.023 °C yr -1 ). EOF2 is associated with the North Atlantic subpolar gyre and the North Atlantic Oscillation, affecting the Atlantic Water flow across the Greenland-Scotland Ridge, imposing a di-pole cooling/warming pattern. Local sea-ice melt along the southeast Greenland shelf is represented by EOF3, and finally the influx of warmer water with the North Icelandic Irminger Current is captured by EOF4. Each of these disaggregated signals differ considerably in their contribution to driving temporal and spatial trends in SST. The isolated signals offer a high-resolution long time series of valuable indicators of oceanographic change which will likely be reflected in biogeochemistry, plankton, fish, mammals, and seabirds in the region. |
format |
Article in Journal/Newspaper |
author |
Saes, Mischa J. M. Gjelstrup, Caroline V. B. Visser, Andre W. Stedmon, Colin A. |
author_facet |
Saes, Mischa J. M. Gjelstrup, Caroline V. B. Visser, Andre W. Stedmon, Colin A. |
author_sort |
Saes, Mischa J. M. |
title |
Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas |
title_short |
Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas |
title_full |
Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas |
title_fullStr |
Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas |
title_full_unstemmed |
Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas |
title_sort |
separating annual, interannual and regional change in sea surface temperature in the northeastern atlantic and nordic seas |
publishDate |
2022 |
url |
https://orbit.dtu.dk/en/publications/c5df10d8-4477-4110-96bd-8e72034dc1a9 https://doi.org/10.1029/2022JC018630 https://backend.orbit.dtu.dk/ws/files/282620527/BERAT_JGR_Oceans_2022_Saes_Separating_annual_interannual_and_regional_change_in_Sea_Surface_Temperature_in_the.pdf https://backend.orbit.dtu.dk/ws/files/283328783/JGR_Oceans_2022_Saes_Separating_Annual_Interannual_and_Regional_Change_in_Sea_Surface_Temperature_in_the.pdf https://doi.org/10.11583/DTU.19316264.v2 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Greenland-Scotland Ridge Nordic Seas North Atlantic North Atlantic oscillation North Icelandic Irminger Current Sea ice |
genre_facet |
Arctic Greenland Greenland-Scotland Ridge Nordic Seas North Atlantic North Atlantic oscillation North Icelandic Irminger Current Sea ice |
op_source |
Saes , M J M , Gjelstrup , C V B , Visser , A W & Stedmon , C A 2022 , ' Separating annual, interannual and regional change in Sea Surface Temperature in the Northeastern Atlantic and Nordic Seas ' , Journal of Geophysical Research: Oceans , vol. 127 , no. 8 , e2022JC018630 . https://doi.org/10.1029/2022JC018630 |
op_relation |
https://orbit.dtu.dk/en/publications/c5df10d8-4477-4110-96bd-8e72034dc1a9 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2022JC01863010.11583/DTU.19316264.v2 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
127 |
container_issue |
8 |
_version_ |
1802641581029720064 |