Dissolved Gaseous Tracers in the South Atlantic Ventilation Experiment: Chlorofluoromethanes

1980 - 1985年期间，美国国家科学基金会资助了两项大西洋瞬态示踪剂测量运动（TTO/NAS和TTO/赤道）。建立这一海洋盆地模型的完整数据库将包括一项南大西洋研究，以便：2.确定CO2运输及其对世界气候的影响；2 .限制该地区主要洋流的模式；确认已观测到的向温跃层添加新碳的速率增加了5倍。这项研究（SAVE）的八个组成部分将由来自LDGO、普林斯顿大学、华盛顿大学、WHOI和SIO的研究人员进行。这些科学家成功地完成了以前在赤道和北大西洋的研究，从而建立了良好的记录。它们将提供物理和化学专门知识，这些专门知识将用于合作努力，以实现地球化学研究的目标。该组分的目的是利用溶解的气体示踪剂来确定温跃层通风的速率、南极中间水扩散的速率和途径、深水和底水扩散的速率和途径以及跨赤道交换的速率。通过了解地层中溶解气体与大气的平衡程度，可以用一个简单的箱形模型确定扩散速率。

Two campaigns to measure transient tracers in the Atlantic Ocean (TTO/NAS and TTO/Equatorial) were funded by NSF during the period from 1980 to 1985. A complete data base for modelling this ocean basin would include a South Atlantic Study to: 1.Determine CO2 transports and their influence on world climate, 2.Constrain models of major ocean currents in this area, and 3.Confirm an observed 5-fold increase in the addition rate of new carbon to the thermocline. Eight components of such a study (SAVE) will be performed by investigators from LDGO, Princeton, University of Washington, WHOI, and SIO. The track record of these scientists is well established by successful completion of previous studies in the Equatorial and North Atlantic. They will provide physical and chemical expertise which will be directed toward a cooperative effort to reach the goals of the geochemical study. This component is aimed at using dissolved gaseous tracers to determine rates of thermocline ventilation, rates and pathways of spreading Antarctic Intermediate Water, rates and paths of Deep and Bottom Water spreading, and rates of cross-equatorial exchange. From a knowledge of the extent of equilibration of dissolved gases in the formation area with the atmosphere, the spreading rates can be determined from a simple box model.