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Recorder-Dependent Temperature Error of Expendable Bathythermograph

机译：消耗性恒温计的记录器相关温度误差

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The accuracy of temperature measurement by the expendable bathythermograph (XBT) is examined for five types of recorders by comparison with co-located CTD measurements and statistical analysis of temperature profiles including an isothermal layer. A positive temperature error increasing downward is occasionally detected for two types of Japanese recorder which have been commonly used among Japanese oceanographic institutions and marine observatories. This error resembles to that reported by Bailey et al. (1989) and Wright (1991) for a different type of recorders, although its cause is not clearly understood. The irregular occurrence of the error suggests that the problem is not solely due to the recorders but rather by some inconsistency of the whole measuring system including them, an XBT probe and sea water. The error is estimated to increase at a rate of O (0.1°C/100 m), and it could be close to 1°C at the deepest part of the profiles (760 m for Tsurumi T-7).
机译：通过与共置的CTD测量结果进行比较以及对包括等温层的温度分布进行统计分析，对5种类型的记录仪检查了消耗式水温计（XBT）进行温度测量的准确性。对于日本海洋学机构和海洋观测站中常用的两种类型的日本记录仪，有时会发现正温度误差向下增加。此错误类似于Bailey等人报告的错误。 （1989）和Wright（1991）提出了不同类型的录音机，尽管其原因尚不清楚。错误的不规则发生表明该问题不仅是由于记录仪造成的，还因为整个测量系统（包括记录仪，XBT探头和海水）的某些不一致。估计误差以O（0.1°C / 100 m）的速率增加，在剖面最深处（鹤见T-7为760 m）可能接近1°C。

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