GRIT-ADB: A Global Hydro-Environmental Attribute Database for the GRIT Hydrography

GRIT-ADB is a new global hydro-environmental attribute database built on the vectorised GRIT hydrography. GRIT-ADB provides a single, comprehensive, consistently organised and fully-global database comprising approximately 60 static and time-varying hydro-environmental attributes at segment and reach scales (Table 1). The attributes are derived from publicly available state-of-the-art data datasets and grouped into five categories: hydrology, physiography, climate, land cover and land use, and soils and geology. GRIT-ADB attributes can be linked to the GRIT hydrography using the unique identifier 'global_id'. Here, GRIT-ADB and GRIT data files at the Congo River basin are provided as an example. For attributes that are not stored in their original units, the scaling factors in GRIT-ADB_v1.0_attribute_description.csv must be applied. Details are provided in the following table. File name Description GRIT-ADB_v1.0_reach_catchment_local_AF_CONG.zarr.tar.gz Local mean attributes at the GRIT-reach scale GRIT-ADB_v1.0_reach_catchment_upstream_AF_CONG.zarr.tar.gz Upstream accumulation statistics of local mean attributes at the GRIT-reach scale GRIT-ADB_v1.0_segment_catchment_local_AF_CONG.zarr.tar.gz Local mean attributes at the GRIT-segment scale GRIT-ADB_v1.0_segment_catchment_upstream_AF_CONG.zarr.tar.gz Upstream accumulation statistics of local mean attributes at the GRIT-segment scale GRITv1.0_reaches_AF_CONG_EPSG8857.gpkg GRIT reach layer GRITv1.0_reach_catchments_AF_CONG_EPSG8857.gpkg GRIT reach-scale catchment layer GRITv1.0_segments_AF_CONG_EPSG8857.gpkg GRIT segment layer GRITv1.0_segment_catchments_AF_CONG_EPSG8857.gpkg GRIT segment-scale catchment layer GRIT-ADB_v1.0_attribute_description.csv Unit, scaling factor, and full name of GRIT-ADB attributesGRIT-ADB是一款基于矢量化GRIT水文地形数据（vectorised GRIT hydrography）构建的新型全球水文环境属性数据库（hydro-environmental attribute database）。GRIT-ADB提供了一套统一、全面、组织规整且全域覆盖的数据库，包含约60种适用于分段（segment）与河段（reach）尺度的静态及时变水文环境属性（详见表1）。所有属性均源自公开可得的前沿数据集，并被划分为五大类别：水文学、自然地理学、气候学、土地覆盖与土地利用，以及土壤与地质学。 GRIT-ADB属性可通过唯一标识符"global_id"与GRIT水文地形数据建立关联。本次提供了刚果河流域的GRIT-ADB及GRIT数据文件作为示例。对于未以原始单位存储的属性，需使用GRIT-ADB_v1.0_attribute_description.csv中提供的缩放因子进行换算，详细说明见下表。 | 文件名 | 描述 | | ---- | ---- | | GRIT-ADB_v1.0_reach_catchment_local_AF_CONG.zarr.tar.gz | GRIT河段尺度汇水区局地平均属性集 | | GRIT-ADB_v1.0_reach_catchment_upstream_AF_CONG.zarr.tar.gz | GRIT河段尺度汇水区局地平均属性的上游累积统计量集 | | GRIT-ADB_v1.0_segment_catchment_local_AF_CONG.zarr.tar.gz | GRIT分段尺度汇水区局地平均属性集 | | GRIT-ADB_v1.0_segment_catchment_upstream_AF_CONG.zarr.tar.gz | GRIT分段尺度汇水区局地平均属性的上游累积统计量集 | | GRITv1.0_reaches_AF_CONG_EPSG8857.gpkg | GRIT河段图层 | | GRITv1.0_reach_catchments_AF_CONG_EPSG8857.gpkg | GRIT河段尺度汇水图层 | | GRITv1.0_segments_AF_CONG_EPSG8857.gpkg | GRIT分段图层 | | GRITv1.0_segment_catchments_AF_CONG_EPSG8857.gpkg | GRIT分段尺度汇水图层 | | GRIT-ADB_v1.0_attribute_description.csv | GRIT-ADB属性的单位、缩放因子及完整名称说明文件