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

热带大西洋是吸收和储存人为二氧化碳(Cant)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-气二氧化碳交换以及海面温度调节也很重要。然而，热带和赤道大西洋的无机碳数据覆盖范围有一个明显的差距，由于涉及的速度较低，直接测量上升流和垂直速度是困难的。在最近的一篇手稿中，我们已经表明，基于时间序列多元回归(EMLR)的亚热带大西洋无机碳数据对Cant的估计与从示踪剂得到的基于TTD的估计高度相关。此外，示踪测量为间接评估上升率提供了一种有效的方法。我们建议收集热带大西洋上升流区的瞬变示踪剂SF6和CFC-12的数据。我们将使用最近从热带大西洋收集的碳和示踪剂数据(M68)以及历史数据，使用eMLR和TTD方法来估计Cant。这些铁路超高估计的热带相关性将被检验。新获得的示踪剂数据将用于估计热带地区的上升流速度。

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.