Time-Series Measurements of CO2 on the JGOFS Cruises in the Central Equatorial Pacific Along 140 Degrees West

海水中的四种碳化学性质中的三种将在联合全球海洋观测系统在中赤道太平洋进行的时间序列考察中确定，该考察定于1992年3月和1992年11月进行，共海上67天。总无机碳浓度将使用自动库仑系统来确定；二氧化碳逸度将使用平衡仪/红外线程序来确定；总碱度将使用电位酸滴定来确定。总无机碳和总碱度将在海上在时间序列站的整个水柱上收集的离散海水样本中进行测量。此外，对表层海水中这三个参数的测量将为严格评估每个数据集的一致性和可靠性提供手段。总二氧化碳和总碱度的准确度将通过测量A·迪克森的参考溶液来控制。经处理的数据将(1)根据能源部赞助的负责二氧化碳数据质量管理的委员会即将建立的标准进行质量控制，(2)制表并添加到JGOFS数据库中，以分发给科学界，以及(3)与相关测量结合使用，既是为了说明结果，也是为了量化海洋碳循环特性时空变化所涉及的过程。

Three of the four carbon chemistry properties in seawater will be determined during the JGOFS time-series expeditions in the Central Equatorial Pacific Ocean, which have been scheduled for March 1992 and November 1992, a total of 67 days at sea. The total inorganic carbon concentration will be determined using an automated coulometric system; the CO2 fugacity using an equilibrator/infra-red procedure; and the total alkalinity using the potentiometric acid titration. The total inorganic carbon and the total alkalinity will be measured at sea in discrete seawater samples collected throughout the water column at the time-series stations. Furthermore, the measurement of these three parameters in surface seawater will provide the means to critically evaluate the consistency and reliability of each of these data sets. The accuracy of both total CO2 and total alkalinity will be controlled by measuring reference solutions by A. Dickson. The processed data will be (1) quality controlled according to the criteria that soon will be established by the DOE sponsored committee responsible for CO2 data quality management, (2) tabulated and added to the JGOFS data base for distribution to the scientific community, and (3) used in conjunction with associated measurements both to give a descriptive account of the results and to quantify the processes involved in the spatiotemporal variations of the properties of the oceanic carbon cycle.