海洋气象学报2025，Vol.45Issue(5)：79-90,12.DOI:10.19513/j.cnki.hyqxxb.20240513001
福建海洋浮标观测数据接续技术初步研究
Preliminary study on data continuation technology for Fujian ocean buoy observations
摘要
Abstract
The percentile and K-means clustering methods are utilized to analyze the longitude and latitude information of Fujian ocean buoy,trying to solve the problem of position estimation of missing observations under the conditions of position drift and swing in the long sequence of ocean buoy data.On this basis,with the third-party data such as CLDAS and ERA5,the inverse distance weighted method and the ordinary Kriging interpolation algorithm are used to calculate when the timing and longitude/latitude positions are determined,and the corresponding temperature,pressure,relative humidity,wind direction and wind speed are estimated.First,the evaluation results of different third-party information and different interpolation algorithms indicate that the stability of data sequence and its length have great impact on the filling of elements,and the inverse distance weighted method performs better than the ordinary Kriging interpolation.Subsequently,based on the conclusions,a new data set is reconstituted by integrating the original observation data from 7 Fujian ocean buoys.A comparative evaluation and validation of the two data sets show that the Pearson correlation coefficients of various meteorological elements are generally above 0.9.The new data set not only significantly improves its completeness but also preserves the consistency and robustness of the original observation data.Local abnormal element values are also effectively controlled.During the validation process of typhoon cases from 2014 to 2021,the wind speed elements are evaluated by comparing them with the real-time typhoon tracks.The correlation coefficients of the wind speed elements in the new data set averagely increase by 0.03,and the root mean square error averagely decreases by 0.5 m·s-1.The experiment shows that the data continuation technology can improve the operational applicability of ocean buoy observations.关键词
海洋浮标/缺测填补/要素插值/评估检验/相关系数Key words
ocean buoy/missing data filling/element interpolation/evaluation and validation/correlation coefficient分类
大气科学引用本文复制引用
袁伟,蓝俊,郑玉兰,段卿,高珊..福建海洋浮标观测数据接续技术初步研究[J].海洋气象学报,2025,45(5):79-90,12.基金项目
中国气象局上海台风研究基金项目(TFJJ202113) （TFJJ202113）
