Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød
Prominent maxima of biological productivity are recorded in both the Northwest and Northeast Pacific during the deglacial, interstadial Bølling-Allerød. These have been linked to a suite of differing causes and mechanisms, such as preservation effects, iron fertilization, riverine fluxes, upper ocea...
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ftawi:oai:epic.awi.de:41346 2023-05-15T18:28:12+02:00 Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød Gong, Xun Lembke-Jene, Lester Tiedemann, Ralf Lohmann, Gerrit 2016 https://epic.awi.de/id/eprint/41346/ http://meetingorganizer.copernicus.org/EGU2016/EGU2016-11703.pdf https://hdl.handle.net/10013/epic.48315 unknown COPERNICUS Gong, X. orcid:0000-0001-9308-4431 , Lembke-Jene, L. orcid:0000-0002-6873-8533 , Tiedemann, R. orcid:0000-0001-7211-8049 and Lohmann, G. orcid:0000-0003-2089-733X (2016) Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød , EGU General Assembly, 17 April 2016 - 22 April 2016 . hdl:10013/epic.48315 EPIC3EGU General Assembly, 2016-04-17-2016-04-22COPERNICUS Conference notRev 2016 ftawi 2021-12-24T15:41:46Z Prominent maxima of biological productivity are recorded in both the Northwest and Northeast Pacific during the deglacial, interstadial Bølling-Allerød. These have been linked to a suite of differing causes and mechanisms, such as preservation effects, iron fertilization, riverine fluxes, upper ocean stratification and coastal upwelling. There is also widespread evidence for shifts in the subarctic Pacific ocean circulation during the deglaciation. However, while the dynamics of nutrient provision and limitation within the photic zone are certainly of high significance, the important role of physical circulation changes in the subsurface to deep ocean in replenishing nutrient supplies to the upper ocean, and of upper ocean temperature changes in fostering productivity peaks, remain largely unconstrained over the course of the last deglaciation. Here, using an Earth System Model COSMOS, we conducted a simulation representing the climate transition from the Last Glacial Maximum to the Bølling-Allerød. In association with marine proxy evidence, we will discuss the deglacial evolution of the surface to deep ocean circulation and mixing in the North Pacific, and examine their respective roles in determining the upwelling of nutrients from deeper layers, along with the formation of the North Pacific Intermediate water. Conference Object Subarctic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Pacific |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
Prominent maxima of biological productivity are recorded in both the Northwest and Northeast Pacific during the deglacial, interstadial Bølling-Allerød. These have been linked to a suite of differing causes and mechanisms, such as preservation effects, iron fertilization, riverine fluxes, upper ocean stratification and coastal upwelling. There is also widespread evidence for shifts in the subarctic Pacific ocean circulation during the deglaciation. However, while the dynamics of nutrient provision and limitation within the photic zone are certainly of high significance, the important role of physical circulation changes in the subsurface to deep ocean in replenishing nutrient supplies to the upper ocean, and of upper ocean temperature changes in fostering productivity peaks, remain largely unconstrained over the course of the last deglaciation. Here, using an Earth System Model COSMOS, we conducted a simulation representing the climate transition from the Last Glacial Maximum to the Bølling-Allerød. In association with marine proxy evidence, we will discuss the deglacial evolution of the surface to deep ocean circulation and mixing in the North Pacific, and examine their respective roles in determining the upwelling of nutrients from deeper layers, along with the formation of the North Pacific Intermediate water. |
format |
Conference Object |
author |
Gong, Xun Lembke-Jene, Lester Tiedemann, Ralf Lohmann, Gerrit |
spellingShingle |
Gong, Xun Lembke-Jene, Lester Tiedemann, Ralf Lohmann, Gerrit Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød |
author_facet |
Gong, Xun Lembke-Jene, Lester Tiedemann, Ralf Lohmann, Gerrit |
author_sort |
Gong, Xun |
title |
Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød |
title_short |
Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød |
title_full |
Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød |
title_fullStr |
Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød |
title_full_unstemmed |
Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød |
title_sort |
dynamic controls on the subarctic north pacific productivity peak during the bølling-allerød |
publisher |
COPERNICUS |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41346/ http://meetingorganizer.copernicus.org/EGU2016/EGU2016-11703.pdf https://hdl.handle.net/10013/epic.48315 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
EPIC3EGU General Assembly, 2016-04-17-2016-04-22COPERNICUS |
op_relation |
Gong, X. orcid:0000-0001-9308-4431 , Lembke-Jene, L. orcid:0000-0002-6873-8533 , Tiedemann, R. orcid:0000-0001-7211-8049 and Lohmann, G. orcid:0000-0003-2089-733X (2016) Dynamic controls on the subarctic North Pacific productivity peak during the Bølling-Allerød , EGU General Assembly, 17 April 2016 - 22 April 2016 . hdl:10013/epic.48315 |
_version_ |
1766210570864820224 |