Carbon and transient dynamics: A bi-polar view of Southern Ocean eddies and the changing Arctic Ocean

碳和瞬态动力学：南大洋涡流和变化的北冰洋的双极观点

• 批准号: 197618716
• 负责人: Dr. Mario Hoppema, Ph.D.
• 金额: --
• 依托单位: Forschungsbereich 2: Marine Biogeochemie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/197618716?language=en
• 关键词: Carbon; transient; dynamics; bi; polar

The oceans and the climate system appear to be changing in many different aspects. The rapidly retreating summer sea ice cover in the Arctic and the increasing westerlies in the Southern Ocean are recent exponents of this phenomenon. Both may have consequences for the uptake of CO2 by the polar oceans. In the Southern Ocean, a decrease of the CO2 sink was suggested due to enhanced upwelling of deep waters. Northward eddy transport across the Antarctic Circumpolar Current may or may not be counteracting this. We propose to investigate the carbon budget of eddies and the role of eddies in the equatorward transport of carbon. CO2 measurements within and across different eddies will be conducted, as well as transient tracers, which will be utilized to describe the physical characteristics of the eddies, and to calculate anthropogenic CO2. In the Arctic Ocean, we want to investigate the physical and biogeochemical components of the Arctic Ocean carbon system and its feedbacks to the environment, as well as to explore how the Arctic Ocean contributes to the ventilation of the global oceans, including recent changes. Measurements of CFC-12 and SF6 will be conducted. With these transient tracers and combined with previous data, anthropogenic CO2 in the Arctic Ocean will be determined. Also the relation of advection to mixing will be better constrained with this combination of two tracers, enhancing the knowledge of circulation within the Arctic.

海洋和气候系统似乎正在许多不同方面发生变化。北极夏季海冰覆盖面积迅速缩小，南大洋西风带增多，是这一现象的最新表现。两者都可能对极地海洋吸收二氧化碳产生影响。在南大洋，由于深层沃茨上升流增强，CO2汇减少。穿过南极绕极流的向北涡旋输送可能会或可能不会抵消这一点。我们建议研究涡旋的碳收支和涡旋在碳向赤道输送中的作用。将在不同的涡旋内和涡旋之间进行CO2测量，并进行瞬态示踪剂测量，瞬态示踪剂将用于描述涡旋的物理特性，并计算人为CO2。在北冰洋，我们希望调查北冰洋碳系统的物理和地球化学组成及其对环境的反馈，并探索北冰洋如何促进全球海洋的通风，包括最近的变化。将对CFC-12和SF6进行测量。利用这些瞬态示踪剂并结合以前的数据，将确定北冰洋的人为CO2。此外，平流混合的关系将更好地约束与这两个示踪剂的组合，提高北极圈内的环流知识。

项目成果

Perspectives of transient tracer applications and limiting cases

• DOI: 10.5194/os-11-699-2015
• 发表时间: 2015-01-01
• 期刊: OCEAN SCIENCE
• 影响因子: 3.2
• 作者: Stoeven, T.;Tanhua, T.;Bullister, J. L.
• 通讯作者: Bullister, J. L.

Recent transient tracer distributions in the Fram Strait: estimation of anthropogenic carbon content and transport

弗拉姆海峡最近的瞬时示踪剂分布：人为碳含量和运输的估计

• DOI: 10.5194/osd-12-2189-2015
• 发表时间: 2015
• 期刊: Ocean Science Discussions
• 作者: Stöven;Tanhua;Hoppema;von Appen
• 通讯作者: von Appen

Mesoscale features create hotspots of carbon uptake in the Antarctic Circumpolar Current

中尺度特征在南极绕极流中形成碳吸收热点

• DOI: 10.1016/j.dsr2.2015.10.006
• 发表时间: 2015
• 期刊: Deep-sea Research Part Ii-topical Studies in Oceanography
• 影响因子: 3
• 作者: Hoppema;Strass;Ossebaar;van Heuven;S.M.A.C;Wolf-Gladrow;Stöven;de Baar;H.J.W.
• 通讯作者: H.J.W.