褚福硕^1,2,3, 庞重光^1,2,4,5, 司宗尚^1,2,4,5, 俞建成⁶
1.中国科学院海洋研究所, 山东 青岛 266071;2.中国科学院海洋环流与波动重点实验室, 山东 青岛 266071;3.中国科学院大学, 北京 100049;4.青岛海洋科学与技术试点国家实验室海洋动力过程与气候功能实验室, 山东 青岛 266237;5.中国科学院海洋大科学研究中心, 山东 青岛 266071;6.中国科学院沈阳自动化研究所, 辽宁 沈阳 110016

摘要:
通过均值过滤及Morison热滞后校正公式对存在温度误差的原始盐度进行修正。经过均值滤波后盐度尖峰现象消失，在温跃层由于热滞后导致的条状盐度抖动现象减小，上下行剖面盐度误差从0.013减小到0.004，总体修正盐度修正率提高3.05倍。结果表明利用该分段修正方法修正水下滑翔机搭载温盐深剖面仪（CTD）存在的盐度“尖峰”及热滞后误差效果显著。
关键词:水下滑翔机盐度修正热滞后效应温盐深剖面仪
DOI：10.11759/hykx20190724001
分类号:P756
基金项目:国家自然科学基金（41576060）；国家科技攻关计划（2016YFC301203）

Salinity correction for sea-wing glider payload conductance-temperature-depth
CHU Fu-shuo^1,2,3, PANG Chong-guang^1,2,4,5, SI Zong-shang^1,2,4,5, YU Jian-cheng⁶
1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;2.CAS Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences, Qingdao 266071, China;3.University of Chinese Academy of Sciences, Beijing 100049, China;4.Laboratory for Ocean Dynamics and Climate, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266237, China;5.Center for Ocean Mega-Science, Chinese Academy of Science, Qingdao 266071, China;6.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
Abstract:
In this study, the formulae used to correct the mean filter and Morison thermal-lag errors were used to separately correct the salinity spikes and salinity thermal-lag errors in sea-wing glider payload conductance-temperature-depth (GPCTD). After correction, the thermal-lag shakes in thermocline are significantly reduced and the ratio of salinity correction is improved by 3.06 times. The results indicate that the sectional correction method is effective to correct the “peak” of salinity and thermal-lag error of GPCTD.
Key words:underwater glidersalinity correctionthermal lag effectglider payload conductance-temperature-depth





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