维普中文期刊产品整合服务

Extraction of ocean tidal information based on global equal-area grid and satellite altimeter data

查看全文 作　　者：Wenbo [1,2]Wang;Huijun [1,2]Zhou;Senyuan [1,2]Zheng;Guonian [1,2]Lü;Liangchen [1,2]Zhou 高影响力作者 机构地区：[1]Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,Nanjing,People’s Republic of China;[2]Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing,People’s Republic of China高影响力机构 出　　处：《International Journal of Digital Earth》索引2022年第15卷第1期,共28页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China[42076203]. 摘　　要：Harmonic analysis of satellite altimetry data based on a global regular grid is affected by the grid spatial tessellation and placement of the grids.With the increase of latitude,the traditional lat/lon grid deforms greatly,resulting in uneven distribution of satellite altimeter data with latitude,which affects the extraction of tidal information.Alternatively,Hexagonal grids have been proved to be advantageous due to their isotropic,uniform neighbourhood,equal-area and more.Considering the merits above,the purpose of this paper is to use the global equal-area hexagonal grid to conduct a harmonic analysis of satellite altimeter data.First,the Icosahedron Snyder Equal Area projection method is used to construct a global equal-area hexagonal grid,Then the time series data of 19.8 years of Jason series satellite altimeter data are obtained.Finally,the harmonic constants of eight constituents(the M2,S2,N2,K2,K1,O1,P1,Q1)are extracted by harmonic analysis.By analysing the results,we conclude that the harmonic constants extracted from the global equal-area hexagonal grid have considerable accuracy and are consistent with the tidal characteristics of the eight components.Meanwhile,the accuracy of harmonic constants extracted from equal-area hexagonal grids is better than that of lat/lon grids. 关 键 词：EQUAL-AREA hexagonal grids satellite altimeter data harmonic analysis
相关文献

参考文献(55)

引证文献(1)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费