全球月尺度海表四维动态数据集(2010-2019年)

数据集是基于全球等积六边形离散网格的全球月尺度海表四维动态数据集（OceanSurface4D-ISEA4H），以1度分辨率提供了涵盖10年（2010年1月-2019年12月）的月平均表层流场和潮汐高度。该数据集使用了OpenDGGS格网开发库及OceanSurface4D软件包。<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;OpenDGGS是一个面向基于施耐德等积多面体投影所构建的全球离散格网系统的API库，支持多种DGGS拓扑类型与层级下多种DGGS要素的统一剖分与编码，能够实现基于DGGS的编码转换、空间数据集成、空间关系查询等操作。相关文档以及源代码均已发布（https://gitee.com/zhoulch/OpenDGGS）。OceanSurface4D提供了一套基于全球等面积六边形离散网格的多源数据反演程序，具体包括全球六边形离散格网的生成、表层流场数据的提取、调和常数的提取、潮汐高度的反演以及基于调和常数的同潮图绘制程序。相关文档以及源代码均已发布（https://gitee.com/zhoulch/OceanSurface4D）。

This is the global monthly-scale ocean surface 4D dynamic dataset (OceanSurface4D-ISEA4H) based on the global equal-area hexagonal discrete grid. Provided at 1° spatial resolution, it contains monthly-averaged surface current fields and tidal heights spanning a 10-year period from January 2010 to December 2019. This dataset was developed using the OpenDGGS grid development library and the OceanSurface4D software package.

OpenDGGS is an API library designed for global discrete grid systems (DGGS) constructed based on the Schneider Equal-area Polyhedral Projection. It supports unified tessellation and encoding of various DGGS elements across multiple DGGS topology types and levels, enabling DGGS-based encoding conversion, spatial data integration, spatial relationship query and other operations. Its documentation and source code have been publicly released at https://gitee.com/zhoulch/OpenDGGS.

OceanSurface4D provides a set of multi-source data inversion programs based on global equal-area hexagonal discrete grids, specifically including the generation of global hexagonal discrete grids, extraction of surface current data, extraction of harmonic constants, inversion of tidal heights, and cotidal chart plotting programs based on harmonic constants. Its documentation and source code have been publicly released at https://gitee.com/zhoulch/OceanSurface4D.