Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model
The long-term trend of increasing phytoplankton net primary production (NPP) in the Arctic correlates with increasing light penetration due to sea ice loss. However, recent studies suggest that enhanced stormy wind mixing may also play a significant role enhancing NPP. Here, we isolate the role of s...
| Authors: | ; ; ; ; ; |
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| Format: | Article |
| Publication date: | 2019 |
| Country: | España |
| Institution: | Universitat Autònoma de Barcelona |
| Repository: | Dipòsit Digital de Documents de la UAB |
| Language: | English |
| OAI Identifier: | oai:ddd.uab.cat:238887 |
| Online Access: | https://ddd.uab.cat/record/238887 https://dx.doi.org/urn:doi:10.1029/2018JG004869 |
| Access Level: | Open access |
| Keyword: | Biogeochemical modeling Net primary production Carbon export Arctic Ocean High-frequency winds Turbulent mixing |
| _version_ | 1878741421742096384 |
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| author | Castro de la Guardia, Laura|||0000-0002-3845-9090 |
| author2 | Garcia-Quintana, Yarisbel|||0000-0001-9519-5012 Claret Cortes, Mariona|||0000-0002-0647-8617 Hu, Xianmin|||0000-0001-5925-7634 Galbraith, Eric D.|||0000-0003-4476-4232 Myers, Paul|||0000-0003-4514-2654 |
| author2_role | author author author author author |
| author_browse | Castro de la Guardia, Laura|||0000-0002-3845-9090 Claret Cortes, Mariona|||0000-0002-0647-8617 Galbraith, Eric D.|||0000-0003-4476-4232 Garcia-Quintana, Yarisbel|||0000-0001-9519-5012 Hu, Xianmin|||0000-0001-5925-7634 Myers, Paul|||0000-0003-4514-2654 |
| author_facet | Castro de la Guardia, Laura|||0000-0002-3845-9090 Garcia-Quintana, Yarisbel|||0000-0001-9519-5012 Claret Cortes, Mariona|||0000-0002-0647-8617 Hu, Xianmin|||0000-0001-5925-7634 Galbraith, Eric D.|||0000-0003-4476-4232 Myers, Paul|||0000-0003-4514-2654 |
| author_role | author |
| collection | Dipòsit Digital de Documents de la UAB |
| description | The long-term trend of increasing phytoplankton net primary production (NPP) in the Arctic correlates with increasing light penetration due to sea ice loss. However, recent studies suggest that enhanced stormy wind mixing may also play a significant role enhancing NPP. Here, we isolate the role of sea ice and stormy winds (hereafter high-frequency winds) using an eddy-permitting ice-ocean-biogeochemical model configured for the North Atlantic and the Arctic. In the model, the presence of high-frequency winds stimulates nutrient upwelling by producing an earlier and longer autumn-winter mixing period with deeper mixing layer. The early onset of autumn mixing results in nutrients being brought-up to near-surface waters before the light becomes the dominant limiting factor, which leads to the autumn bloom. The enhanced mixing results in higher nutrient concentrations in spring and thus a large spring bloom. The model also shows significant iron limitation in the Labrador Sea, which is intensified by high-frequency winds. The effect of sea ice loss on NPP was found to be regionally dependent on the presence of high-frequency winds. This numerical study suggests high-frequency winds play significant role increasing NPP in the Arctic and sub-Arctic by alleviating phytoplankton nutrient limitation and that the isolated effect of sea ice loss on light plays a comparatively minor role. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_e4e0b83e7baa0651fcb3cec8b4e49015 |
| institution | Universitat Autònoma de Barcelona |
| instname_str | Universitat Autònoma de Barcelona |
| language | eng |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:ddd.uab.cat:238887 |
| publishDate | 2019 |
| publishDateSort | 2019 |
| reponame_str | Dipòsit Digital de Documents de la UAB |
| spelling | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model Castro de la Guardia, Laura|||0000-0002-3845-9090 Garcia-Quintana, Yarisbel|||0000-0001-9519-5012 Claret Cortes, Mariona|||0000-0002-0647-8617 Hu, Xianmin|||0000-0001-5925-7634 Galbraith, Eric D.|||0000-0003-4476-4232 Myers, Paul|||0000-0003-4514-2654 Biogeochemical modeling Net primary production Carbon export Arctic Ocean High-frequency winds Turbulent mixing The long-term trend of increasing phytoplankton net primary production (NPP) in the Arctic correlates with increasing light penetration due to sea ice loss. However, recent studies suggest that enhanced stormy wind mixing may also play a significant role enhancing NPP. Here, we isolate the role of sea ice and stormy winds (hereafter high-frequency winds) using an eddy-permitting ice-ocean-biogeochemical model configured for the North Atlantic and the Arctic. In the model, the presence of high-frequency winds stimulates nutrient upwelling by producing an earlier and longer autumn-winter mixing period with deeper mixing layer. The early onset of autumn mixing results in nutrients being brought-up to near-surface waters before the light becomes the dominant limiting factor, which leads to the autumn bloom. The enhanced mixing results in higher nutrient concentrations in spring and thus a large spring bloom. The model also shows significant iron limitation in the Labrador Sea, which is intensified by high-frequency winds. The effect of sea ice loss on NPP was found to be regionally dependent on the presence of high-frequency winds. This numerical study suggests high-frequency winds play significant role increasing NPP in the Arctic and sub-Arctic by alleviating phytoplankton nutrient limitation and that the isolated effect of sea ice loss on light plays a comparatively minor role. https://ddd.uab.cat/record/238887 https://dx.doi.org/urn:doi:10.1029/2018JG004869 |
| spellingShingle | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model Castro de la Guardia, Laura|||0000-0002-3845-9090 Biogeochemical modeling Net primary production Carbon export Arctic Ocean High-frequency winds Turbulent mixing |
| title | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model |
| title_full | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model |
| title_fullStr | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model |
| title_full_unstemmed | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model |
| title_short | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model |
| title_sort | Assessing the role of high-frequency winds and sea ice loss on arctic phytoplankton blooms in an ice-ocean-biogeochemical model |
| topic | Biogeochemical modeling Net primary production Carbon export Arctic Ocean High-frequency winds Turbulent mixing |
| topic_facet | Biogeochemical modeling Net primary production Carbon export Arctic Ocean High-frequency winds Turbulent mixing |
| url | https://ddd.uab.cat/record/238887 https://dx.doi.org/urn:doi:10.1029/2018JG004869 |