Sand content in % (kg / kg) at 6 standard depths (0, 10, 30, 60, 100 and 200 cm) at 250 m resolution

Sand content in % (kg / kg) at 6 standard depths (0, 10, 30, 60, 100 and 200 cm) at 250 m resolution. Based on machine learning predictions from global compilation of soil profiles and samples. Processing steps are described in detail here. Antarctica is not included.

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All files internally compressed using "COMPRESS=DEFLATE" creation option in GDAL. File naming convention:

sol = theme: soil,

sand.wfraction = variable: sand weight fraction,

usda.3a1a1a = determination method: laboratory method code,

m = mean value,

250m = spatial resolution / block support: 250 m,

b10..10cm = vertical reference: 10 cm depth below surface,

1950..2017 = time reference: period 1950-2017,

v0.2 = version number: 0.2,

本数据集提供分辨率为250米的砂粒质量分数（百分比，kg/kg）数据，涵盖地表下0、10、30、60、100及200厘米共6个标准深度。该数据基于全球土壤剖面与样本汇编的机器学习预测结果，详细处理步骤详见此处。本数据集未包含南极洲区域。

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所有内部文件均通过GDAL的"COMPRESS=DEFLATE"创建选项进行压缩。文件命名规则如下：

- sol = 主题：土壤（soil）
- sand.wfraction = 变量：砂粒重量占比
- usda.3a1a1a = 测定方法：实验室方法代码
- m = 均值
- 250m = 空间分辨率/区块支撑：250米
- b10..10cm = 垂直参考基准：地表下10厘米深度
- 1950..2017 = 时间参考基准：1950-2017年时段
- v0.2 = 版本号：0.2