The global ocean monitoring system would benefit from improvements in the efficiency of Conductivity, Temperature, and Depth Device (CTD) sensor screening. Here, we describe the development of a new screening system, J-Calibration, for use with the SBE41 CTD sensor on the Argo float (Sea Bird Scientific). This new system has crucial advantages over the traditional SBE-Calibration system. First, J-Calibration does not require removal of the CTD sensor unit from the Argo float body to operate in a laboratory. This feature enables technicians or operators to more efficiently check the Argo target accuracies (± 0.005 °C for temperature and ± 0.01 PSS-78 for salinity) and allows the manufacturer’s warranty to remain intact. This also allows for a more efficient basic screening system which maintains screening accuracy without the need for specialized technicians. J-Calibration reduces the screening time to 1/6th that of SBE-Calibration and does not require the preparation of large amounts of artificial seawater. J-Calibration uses 1/23rd of the volume of seawater compared to SBE-Calibration by examining calibration at only 1 temperature point (22 °C), whereas SBE-Calibration requires 7 points to achieve calibration. The J-Calibration system does require careful temperature control of the artificial seawater as it is critical to maintain a uniform water temperature throughout the experiments. To satisfy this, using a vinyl greenhouse and covering sensors with adiabatic materials and cooling packs are effective. In comparison with the accuracy and system stability of SBE-Calibration, we show that the J-Calibration system is non-inferior and therefore is suitable for use in laboratory screening prior to deployment. Based on these advantages, the J-Calibration system will make a strong contribution to the deployment of healthy Argo fleets and to the maintenance of uniform data in the global ocean.

中文翻译：

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温度和电导率传感器校准的新方法，可提高筛选Argo浮子上SBE41 CTD的效率

全球海洋监测系统将受益于电导率，温度和深度设备（CTD）传感器筛选效率的提高。在这里，我们描述了与Argo浮标（Sea Bird Scientific）上的SBE41 CTD传感器一起使用的新型筛选系统J-Calibration的开发。与传统的SBE校准系统相比，该新系统具有关键优势。首先，J-Calibration不需要从Argo浮体上取下CTD传感器单元即可在实验室进行操作。此功能使技术人员或操作员可以更有效地检查Argo目标精度（温度为±0.005°C，盐度为±0.01 PSS-78），并保持制造商的保修原封不动。这也允许使用更高效的基本筛查系统，该系统可以保持筛查的准确性，而无需专门的技术人员。J-Calibration将筛选时间减少到SBE-Calibration的1/6，并且不需要准备大量的人工海水。通过仅在1个温度点（22°C）上检查校准，J-Calibration使用的海水量是SBE-Calibration的1/23％，而SBE-Calibration需要7个点才能进行校准。J校准系统确实需要对人造海水进行仔细的温度控制，因为在整个实验过程中保持均匀的水温至关重要。为满足此要求，使用乙烯基温室并用绝热材料和冷却袋覆盖传感器是有效的。与SBE-Calibration的准确性和系统稳定性相比，我们显示J-Calibration系统不逊色，因此适合在部署之前用于实验室筛查。基于这些优势，J-Calibration系统将为部署健康的Argo舰队和维护全球海洋中的统一数据做出巨大贡献。