首页 | 期刊介绍 | 编委会 | 道德声明 | 投稿指南 | 常用下载 | 过刊浏览 | 期刊订阅 | In English
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 55次   下载   
分享到: 微信 更多
船载CTD仪与自动剖面浮标观测资料质量初探
吴晓芬1, 周慧2, 曹敏杰1, 刘增宏1, 孙朝辉1, 卢少磊1
1.卫星海洋环境动力学国家重点实验室;2.海洋环流与波动重点实验室,中国科学院海洋研究所
摘要:
众所周知,海洋科学的发展离不开精确的数据,然而各种海洋观测仪器在复杂的海洋环境中作业难免产生测量误差,导致观测数据需要进行实时(或延时)质量控制。本文主要通过中国Argo计划搭载两个航次布放剖面浮标的机会,对航次中获取的船载CTD仪观测资料、自动剖面浮标观测资料以及实验室高精度盐度计测量数据之间进行了实时比对研究。分析结果显示利用实验室高精度盐度计对现场观测数据,尤其是船载CTD仪观测资料进行质量控制对于温盐数据(特别是深层)的实时/延时校正非常重要(如某航次未经标定的船载CTD仪所测1000dbar以深范围内海水盐度,与实验室高精度盐度计的差值达到±0.1左右,远远落后于国内海洋调查规范对盐度准确度±0.02的测量要求)。建议有条件的情况下,在进行深海大洋船载CTD仪观测时要进行现场实验室高精度盐度计的质量控制工作及比对试验,以提高我国深海大洋观测数据的质量。
关键词:  自动剖面浮标、船载CTD仪、实验室盐度计、资料质量
DOI:10.11693/hyhz20180400099
分类号:
基金项目:国家自然科学基金委青年基金项目(41406022, 41606003),中央级公益性科研院所基本科研业务费专项资金资助项目(JG1710)
Preliminary Quality Discussion between Ship-based CTD and Profiling Floats Observational Data
Wu Xiaofen1, Zhou Hui2, Cao Minjie1, Liu Zenghong1, Sun Chaohui1, Lu Shaolei1
1.the Second Institute of Oceanography, SOA;2.Key Laboratory of Ocean Circulation and Waves ,Institute of Oceanography, Chinese Academy of Science
Abstract:
It is well known that the development of marine science depends on accurate data, however, a variety of marine observation instrument that work in complicated ocean environments may unavoidably produce measurement error, lead to the need for real-time (or delayed mode) observation data quality control. This article mainly gives a real-time contrast among the data collected by ship-based CTD instruments,Argo profiling floats and high-precision laboratory salinometer after two voyages carried by China Argo program. Analysis results show that the data inspection through laboratory salinometer is very important for in-situ observational data, especially for the ship-based CTD observations, and is thus vital for the calibration of temperature or salinity data, especially for deep ocean. Just like the comparison gave, the salinity near 1000 dbar acquired by a ship-based CTD which was not calibrated before the voyage, has a differential of nearly ±0.1 compared with laboratory salinometer observation. Such value lags far behind the accuracy of ±0.02 salinity measurement requirement in the domestic ocean survey specification. Based on these tests, we suggest that researchers who engaged in the open ocean survey should give a focus on the data quality control with different instruments, in order to promote and improve the quality of the national marine observational dataset.
Key words:  profiling floats,ship-based CTD,laboratory salinometer, data quality
版权所有 《海洋与湖沼》编辑部 Copyright©2008 All Rights Reserved
主管单位:中国科学技术协会 主办单位:中国海洋湖沼学会 中国科学院海洋研究所
地址:青岛市南海路七号  邮编:266071  电话:0532-82898753  E-mail:ols@qdio.ac.cn
技术支持:北京勤云科技发展有限公司