中国北极海域水文考察CTD数据集

Hydrologic CTD Dataset Obtained through Chinese Arctic Expeditions

北极地区不仅是全球变化的驱动器,也是全球气候变化的重要冷源,是全球气候系统的重要组成部分。近年来,北极气候环境变化对我国气候的影响日益显著,极地环境变化、极地资源勘探以及极地环境保护等已经成为极地研究的热点问题。在深入极地研究的过程中,掌握高质量、高精度的现场调查数据是工作开展的基础。至2014年,我国已进行6次北极科学考察,调查区域涵盖白令海、楚科奇海、加拿大海盆、北欧海和北极高纬度海区。本文在收集整理了我国六次北极海域考察CTD数据的基础上,参考航次现场记录,利用相关数据处理软件,对不同采集设备、不同分辨率的数据进行了统一、规范和奇异值剔除,最终形成垂向分辨率为1db,包含压强、深度、温度、盐度、密度、声速和位温等要素的数据集。它是我国多年北极科学考察的产出成果,为极地各学科研究工作提供了数据基础。

As an important part of the global climatic system,the Arctic is a key cold source that drives global climatic change.In recent years,with the mounting impact of the arctic climatic changes,such issues as polar environmental change,polar resource exploration and polar environmental protection have been hotspots of polar research.In-depth polar research may be conducted on the basis of high-quality field survey data.Until 2014,China has completed six scientific expeditions to the Arctic seas including the Bering Sea,Chukchi Sea,Canada Basin,Nordic Sea and high-latitude Arctic seas.Based on the CTD data collected in the process of the expeditions,in combination with the field records on voyage,data processing software,the paper normalizes the data from different collecting equipments and methodologies.Finally,we develop a dataset with vertical resolution and consist of pressure,depth,temperature,salinity,density,sound velocity and potential temperature.This is one of the outcomes from China’s scientific expedition to the Arctic and facilitates the related polar studies.