中国北极海域水文考察CTD数据集(1999-2014)

北极地区是全球气候变化的重要冷源，北极生态环境变化对全球变化的影响成为极地研究的热点问题。自1999至2014年，我国进行了六次北极科学考察，调查区域在北纬52度42分~88度24分，西经19度17分~143度30分，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。本文在汇集整理了我国六次北极海域考察640数据采集点（其中，各次科考的数据采集点分别为：第一次86个，第二次115个， 第三次120个，第四次130个，第五次99个，第六次90个）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，最终完成涵盖压强、深度、温度、盐度、密度、声速和位温等7个水文要素的数据集。该数据集是我国六年北极科学考察的产出成果，可为北极各学科研究提供水文基础数据。数据集存储为.dat格式，压缩后数据量为11.5MB。

The Arctic serves as a critical cold source for global climate change, and the impacts of Arctic eco-environmental changes on global climate change have emerged as a hotspot in polar research. From 1999 to 2014, China conducted six Arctic scientific expeditions, with survey areas ranging from 52°42′N to 88°24′N and 19°17′W to 143°30′W, covering the Bering Sea, Chukchi Sea, Canadian Basin, Nordic Seas, and Arctic high-latitude marine areas. This study compiled CTD data from 640 data collection stations (with 86, 115, 120, 130, 99, and 90 stations for the 1st through 6th expeditions respectively) acquired during China’s six Arctic marine expeditions. Based on cruise field logs and using specialized data processing software, the study unified, standardized, and removed outliers from data collected by different instruments with varying resolutions, ultimately establishing a dataset containing seven hydrological parameters: pressure, depth, temperature, salinity, density, sound speed, and potential temperature. This dataset is the scientific output of China’s six Arctic expeditions, providing fundamental hydrological data for interdisciplinary Arctic research. The dataset is stored in .dat format, with a compressed size of 11.5 MB.