eReefs GBR1 and GBR4 model boundary and grid in shapefile format (AIMS)

This dataset consists of shapefiles that correspond to the model grids used in the CSIRO eReefs hydrodynamic and biogeochemical models. These models store their results in multi-dimensional NetCDF files using a curvilinear grid. This dataset corresponds to an extract from these files converting the curvilinear grid into polygons in a shapefile. This dataset only captures the structure of the grid, not the time series data generated by the model. It contains shapefiles of the 4 km model grid (GBR4) and the 1 km grid (GBR1) as well as shapefiles for the bounding polygon of all the 'wet' cells in the model. This dataset is useful for visualising the extent of the various CSIRO eReefs models. This dataset contains shapefiles for the 1 km and 4 km eReefs grids, derived from version 2.0 of the eReefs Hydrodynamic model. It contains shapefiles of the individual grid cells and the bounds. It also includes a low resolution version of the bounds suitable for detecting whether locations are inside the eReefs model extent.The grid shapefile contains polygons representing each of the grid cells. An attribution is associated with each polygon corresponding to the depth used in the model. This can be used to show where the model has 'wet' cells. Methods:1. Representative data files for the GBR1 and GBR4 hydrodynamic version model were downloaded from the public repository of eReefs model data on NCI. The two common grids GBR1 and GBR4 are used over the model time series and for the both the hydrodynamic and biogeochemical models. We therefore just chose one model NetCDF for each model resolution. These were taken from the hydrodynamic model version 2.2. The grid was converted to shapefiles using an R script that calculated the coordinates corners of each curvilinear pixel in the grid based on the centroids of the neighbouring pixels. 3. The grid boundary shapefiles were calculated using the merge GIS operation in QGIS after selecting all the 'wet' cells, where the depth was greater than 0.Full step-by-step instructions and scripts are available to reproduce this dataset from github (https://github.com/eatlas/GBR_AIMS_eReefs-grid-shapefiles).Format:Shapefile Data Dictionary:SP_ID: Row and column indices in the NetCDF grid joined togetherdepth: Depth used in the eReefs model in metres. This is based on the botz variable in the original NetCDF eReefs model data file.row: Row index in the NetCDF tables for this pixel.col: Column index in the NetCDF tables for this pixel.Change Log:2025-10-16 - Added DOI, ROR and ORCIDs to the record.Data Location:This dataset is filed in the eAtlas enduring data repository at: X:\data\custodian\2018-22-eReefs\GBR_AIMS_eReefs-grid-shapefilesSource code for reproducing this dataset is available on github (https://github.com/eatlas/GBR_AIMS_eReefs-grid-shapefiles).

本数据集包含与CSIRO eReefs水动力学及生物地球化学模型所用网格对应的Shapefile文件。这些模型采用曲线网格（curvilinear grid），其结果存储于多维NetCDF（Network Common Data Form）文件中。本数据集是从上述文件中提取的子集，将曲线网格转换为Shapefile中的多边形。本数据集仅记录网格结构，不包含模型生成的时间序列数据。它包含4千米分辨率模型网格（GBR4）、1千米分辨率网格（GBR1）的Shapefile文件，以及模型中所有“湿单元”（wet cells）的边界多边形Shapefile文件。本数据集可用于可视化CSIRO eReefs系列模型的覆盖范围。本数据集包含源自eReefs水动力学模型2.0版本的1千米及4千米分辨率网格Shapefile文件，还包含单个网格单元及边界的Shapefile文件，以及一个低分辨率边界版本，适用于检测位置是否位于eReefs模型范围内。网格Shapefile包含代表每个网格单元的多边形，每个多边形附带模型所用深度的属性信息，可用于显示模型中的湿单元位置。

方法：
1. 从NCI（National Computational Infrastructure）上的eReefs模型数据公共仓库下载GBR1和GBR4水动力学版本模型的代表性数据文件。GBR1和GBR4这两种常用网格用于模型时间序列及水动力学、生物地球化学模型中，因此我们为每种分辨率各选择一个NetCDF模型文件，这些文件取自水动力学模型2.2版本。
2. 使用R脚本将网格转换为Shapefile文件，该脚本基于相邻像素的质心计算网格中每个曲线像素的角点坐标。
3. 选择所有深度大于0的湿单元后，使用QGIS中的GIS合并操作计算网格边界Shapefile文件。
完整的分步说明及脚本可从GitHub获取，用于复现本数据集（链接：https://github.com/eatlas/GBR_AIMS_eReefs-grid-shapefiles）。

格式：
Shapefile数据字典：
SP_ID：NetCDF网格中行与列索引的组合
depth：eReefs模型所用深度（单位：米），基于原始NetCDF文件中的botz变量
row：该像素在NetCDF表中的行索引
col：该像素在NetCDF表中的列索引

变更日志：
2025-10-16 - 向记录中添加DOI（Digital Object Identifier）、ROR（Research Organization Registry）及ORCID（Open Researcher and Contributor ID）标识。

数据位置：
本数据集存档于eAtlas长期数据仓库，路径为：X:datacustodian2018-22-eReefsGBR_AIMS_eReefs-grid-shapefiles；复现本数据集的源代码可在GitHub获取（链接：https://github.com/eatlas/GBR_AIMS_eReefs-grid-shapefiles）。