全球综合干旱监测预测系统-NLDAS标准化降水指数数据集
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全球综合干旱监测与预测系统（GIDMaPS）基于多种干旱指数和输入数据集，提供近实时的干旱信息（官网链接：http://drought.eng.uci.edu/）。在本数据包中，文件夹名称标注了干旱指数及数据来源（命名格式为 “INDEX_SOURCE”，即 “指数_来源”），其中干旱指数的可选类型包括三种，分别是 PSI（基于降水量（Precipitation，简称 P）和土壤湿度（Soil Moisture，简称 S）的多变量标准化干旱指数，英文全称为 Multivariate Standardized Drought Index，简称 MSDI）、SSI（标准化土壤湿度指数，英文全称为 Standardized Soil Moisture Index）和 SPI（标准化降水量指数，英文全称为 Standardized Precipitation Index）；每个文件夹内的文件均以 “INDEXYYYYMM.asc” 格式命名，其中 “INDEX” 对应上述 PSI、SSI 或 SPI 三种干旱指数，“YYYY” 代表年份（如 2024 即表示 2024 年），“MM” 代表月份（如 05 即表示 5 月），“.asc” 是文件扩展名，指 ASCII 码文本格式，该格式常用于存储地理空间数据或数值矩阵数据。
The Global Integrated Drought Monitoring and Prediction System (GIDMaPS) provides near-real-time drought information based on multiple drought indices and input datasets (official website: http://drought.eng.uci.edu/). In this data package, folder names are labeled with the drought index and data source, following the naming format "INDEX_SOURCE", which stands for "index_source". The available drought indices include three types: PSI (Multivariate Standardized Drought Index, MSDI for short, which is based on Precipitation (abbreviated as P) and Soil Moisture (abbreviated as S)), SSI (Standardized Soil Moisture Index), and SPI (Standardized Precipitation Index). Files within each folder follow the naming convention "INDEXYYYYMM.asc", where "INDEX" corresponds to the three aforementioned drought indices (PSI, SSI, or SPI), "YYYY" represents the year (e.g., 2024 denotes the year 2024), "MM" represents the month (e.g., 05 represents May), and ".asc" is the file extension, referring to ASCII text format, which is commonly used for storing geospatial data or numerical matrix data.
