Anthropogenic Carbon, CFC-12 and SF6 in the Tropical Atlantic.

热带大西洋中的人为碳、CFC-12 和 SF6。

• 批准号: 42594921
• 负责人: Professor Dr. Douglas W.R. Wallace
• 金额: --
• 依托单位: Forschungseinheit Chemische Ozeanographie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/42594921?language=en
• 关键词: Anthropogenic; Carbon; CFC; 12; SF6

The tropical Atlantic is a potentially important area for uptake and storage of anthropogenic CO2 (Cant). The tropical upwelling areas are also important for the global and regional climate, biological carbon production, air-sea CO2 exchange, and for regulation of the sea surface temperature. However, there is a noticeable gap in the inorganic carbon data coverage for the tropical and equatorial Atlantic, and direct measurements of upwelling and vertical velocities are difficult due to the low velocities involved. In a recent manuscript we have shown that time-series multiple regression (eMLR) based estimates of Cant derived from inorganic carbon data in the sub-tropical Atlantic are highly correlated with TTD-based estimates derived from tracers. Further more tracer measurements provide an efficient way of indirectly assessing upwelling rates. We propose to collect data of the transient tracers SF6 and CFC-12 in upwelling areas of the tropical Atlantic. We will use recently collected carbon and tracer data (M68) from the Tropical Atlantic together with historical data to estimate Cant using both the eMLR and TTD approaches. The tropical correlation of these Cant estimates will be examined. The newly acquired tracer data will be used to estimate upwelling rates in the tropics.

热带大西洋是吸收和储存人为CO2的潜在重要区域。热带上升流区对全球和区域气候、生物碳生产、海-气CO2交换以及海表温度的调节也很重要。然而，在热带和赤道大西洋的无机碳数据覆盖范围方面存在着明显的差距，由于所涉及的速度较低，很难直接测量上升流和垂直速度。在最近的一份手稿中，我们已经表明，时间序列多元回归（eMLR）的基础上的估计Cant来自亚热带大西洋的无机碳数据是高度相关的TTD为基础的估计来自示踪剂。此外，更多的示踪剂测量提供了一种间接评估上升流速率的有效方法。我们建议在热带大西洋上升流区收集瞬态示踪剂SF6和CFC-12的数据。我们将使用最近收集的碳和示踪剂数据（M68）从热带大西洋与历史数据一起使用eMLR和TTD方法来估计铁路超高。将检查这些Cant估计的热带相关性。新获得的示踪剂数据将用于估计热带地区的上升流速率。

项目成果

An evaluation of tracer fields and anthropogenic carbon in the equatorial and the tropical North Atlantic

• DOI: 10.1016/j.dsr.2012.05.007
• 发表时间: 2012-09-01
• 期刊: DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
• 影响因子: 2.4
• 作者: Schneider, A.;Tanhua, T.;Wallace, D. W. R.
• 通讯作者: Wallace, D. W. R.