A calibration method of Argo floats based on multiple regression analysis

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A calibration method of Argo floats based on multiple regression analysis

机译：基于多元回归分析的Argo浮标定标方法

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Argo floats are free-moving floats that report vertical profiles of salinity, temperature and pressure at regular time intervals. These floats give good measurements of temperature and pressure, but salinity measurements may show significant sensor drifting with time. It is found that sensor drifting with time is not purely linear as presupposed by Wong (2003). A new method is developed to calibrate conductivity data measured by Argo floats. In this method, Wong's objective analysis method was adopted to estimate the background climatological salinity field on potential temperature surfaces from nearby historical data in WOD01. Furthermore, temperature and time factors are taken into account, and stepwise regression was used for a time-varying or temperature-varying slope in potential conductivity space to correct the drifting in these profiling float salinity data. The result shows salinity errors using this method are smaller than that of Wong's method, the quantitative and qualitative analysis of the conductivity sensor can be carried out with our method.

机译：Argo浮子是可自由移动的浮子，可定期报告盐度，温度和压力的垂直剖面。这些浮子可以很好地测量温度和压力，但盐度测量可能会显示传感器随时间的漂移很大。发现传感器随时间的漂移并非如Wong（2003）那样纯粹是线性的。开发了一种新方法来校准由Argo浮子测得的电导率数据。在这种方法中，采用了Wong的客观分析方法，根据WOD01中的附近历史数据估算了潜在温度面上的背景气候盐度场。此外，考虑了温度和时间因素，并对电导率空间中随时间变化或温度变化的斜率采用了逐步回归，以校正这些剖面浮点盐度数据中的漂移。结果表明，该方法的盐度误差小于Wong的方法，可以用我们的方法进行电导率传感器的定量和定性分析。

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《中国海洋湖沼学报（英文版）》 |2006年第2期|118-124|共7页
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作者单位

National Marine Data and Information Service of China, Tianjun 300171, China;

Ocean University of China, Qingdao 266003, China;

Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类地球物理学;
关键词
Argo; calibration; multiple-regression analysis;

机译：Argo校准多元回归分析;

A calibration method of Argo floats based on multiple regression analysis

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