Collaborative Research: Processes Driving Spatial and Temporal Variability of Surface pCO2 in the Drake Passage

该建议是为了继续和扩大R/V Laurence M上正在进行的计划。Gould将测量德雷克海峡断面表层沃茨中溶解二氧化碳气体（pCO 2）沿着和偶尔的总二氧化碳（TCO 2）。 增加的观测包括溶解氧，以及营养和碳13。 所提出的工作类似于在R/V Nathaniel B上进行的测量计划。南大洋是全球碳收支的重要组成部分。 低的表面温度，因此低的垂直稳定性，冰的形成和大风产生一个非常活跃的环境，为大气和海洋水库之间的气态二氧化碳的交换。 德雷克海峡是南极绕极流及其相关锋面必须通过的最西端，也是测量气体交换纬度梯度的最有效地点。生成的时间序列将有助于实现两个科学目标：量化地表二氧化碳、氧气、营养物质和碳13的空间和时间变异性和趋势，以及了解造成观测到的变异性的主要过程。

This proposal is for the continuation and expansion of an underway program on the R/V Laurence M. Gould to measure dissolved carbon dioxide gas (pCO2) along with occasional total carbon dioxide (TCO2) in surface waters on transects of Drake Passage. The added observations include dissolved oxygen, as well as nutrient and carbon-13. The proposed work is similar to the underway measurement program made aboard R/V Nathaniel B. Palmer, and complements similar surface temperature and current data.The Southern Ocean is an important component of the global carbon budget. Low surface temperatures with consequently low vertical stability, ice formation, and high winds produce a very active environment for the exchange of gaseous carbon dioxide between the atmospheric and oceanic reservoirs. The Drake Passage is the narrowest point through which the Antarctic Circumpolar Current and its associated fronts must pass, and is the most efficient location for the measurement of latitudinal gradients of gas exchange. The generated time series will contribute towards two scientific goals: the quantification of the spatial and temporal variability and trends of surface carbon dioxide, oxygen, nutrients and C-13, and an understanding of the dominant processes that contribute to the observed variability.