海洋预报2025，Vol.42Issue(2)：76-88,13.DOI:10.11737/j.issn.1003-0239.2025.02.009
全球志愿观测船数据的适用性分析
Applicability analysis of global voluntary observing ship data
摘要
Abstract
In this paper,a comparative study between the ERA5 data and the Voluntary Observing Ships(VOS)data shared by the Global Telecommunication System(GTS)in 2022 is conducted.Using quantitative statistical metrics(correlation coefficient-CC,relative bias-RB,root mean squared error-RMSE,mean error-ME,mean absolute error-MAE),the data consistency and applicability of air temperature,pressure,relative humidity and wind speed observed by the VOS are assessed from aspects of periods and regions.The VOS that could observe simultaneously Essential Climate Variables(air temperature,water vapor,surface pressure,wind speed and direction)are defined as ECVs ships in the paper.The results show that the ECVs ships data have reasonable changing trends generally,among which the air temperature data has the best statistical metrics with CC and RB being 0.99 and 1.59%,respectively.The second best data is air pressure,with CC dropping to 0.90 and ME being-2.42 hPa.The third best data is relative humidity,with RMSE and MAE being 8.16%and 5.89%,respectively.The wind speed data is not good,with CC and RB being 0.74 and 22.85%,respectively.The quality of the ECVs ships data varies in different seasons and months,the consistency of air temperature between the ECVs ships and ERA5 data is the best and most stable.The analysis of the ECVs ships data in different ocean areas shows that the statistical metrics in Western Pacific,Indian Ocean and North Atlantic have their own advantages and disadvantages respectively.The statistical metrics of air temperature and relative humidity have significant diurnal variation,while those of air pressure and wind speed have not.关键词
志愿观测船/基本气候变量观测船舶/ERA5/比较研究/适用性Key words
Volunteer Observing Ship/ECVs ships/ERA5/comparative study/applicability分类
海洋学引用本文复制引用
汪冬冬,南雪景,李肖霞,雷勇..全球志愿观测船数据的适用性分析[J].海洋预报,2025,42(2):76-88,13.基金项目
国家重点研发计划(2021YFC3090200) （2021YFC3090200）
中国气象局创新发展专项(CXFZ2023J020) （CXFZ2023J020）
宁波市公益性研究计划项目(2022S181、2023S065) （2022S181、2023S065）
宁波市重点研发计划暨"揭榜挂帅"项目(2023Z139) （2023Z139）
宁波市气象科技计划项目(NBQX2023004B). （NBQX2023004B）
