投弃式温度/温盐剖面测量仪的应用及其数据处理进展

投弃式温度剖面测量仪 (Expendable bathythermograph， xBT) 以 及 投 弃 式 温 盐 剖 面 测 量 仪 (Expendable Conductivity-Temperature-Depth profiler， xCTD)是观测海洋温深/温盐深剖面的重要仪器，由于其易于操作，成本较低且技 术成熟，因此被广泛地应用于海洋边界流、海洋热含量、气候变化和经向热输送研究。本文首先介绍国内外 xBT/xCTD 仪器 的发展及其现状，然后针对国际上 xBT/xCTD 仪器的误差来源以及数据处理过程中存在的问题进行分析，并对较为先进的数 据校正方案及其应用进行了方案调研和比对。最后，本文总结当前 xBT/xCTD 在国际合作项目中的应用现状，并对国内外相 关的数据处理方法进行总结归纳，对目前 xBT/xCTD 仪器存在的问题以及未来的发展趋势进行进一步的探讨，为国内投弃式 剖面测量仪的数据处理方法的进步和仪器的进一步发展提供了参考。

Application and data processing of XBT/XCTD

Expendable Bathythermograph (xBT) and Expendable Conductivity-Temperature-Depth profiler (xCTD) are important tools for observing ocean temperature-depth / temperature-salinity-depth profiles. Easy to operate. low in cost. and with mature technology. they are widely used in studies of ocean boundary current. ocean heat content. climate change. and meridional heat transfer. This paper first introduces the development and current situation of xBT/xCTD instruments at home and abroad. then analyzes the error sources of the instruments and the problems existing in data processing. More advanced data correction schemes and their applications are investigated and compared. Finally. this paper summarizes the current application status of xBT/xCTD in international cooperation projects. summarizes the relevant data processing methods at home and abroad. and further discusses the existing problems and future development trends of xBT/xCTD instrument. This study provides a reference for the progress of data processing methods and the further development of domestic disposable profiler.