2010-2020年中国干旱指数数据

采用中国国家质量监督检验检疫总局颁布的国家标准GB/T2008《农业干旱等级》中的指标：降水量距平百分率作致灾因子的评价指标。降水量距平百分率是指某时段的降水量与常年同期气候平均降水量之差与常年同期气候平均降水量相比的百分率，单位用百分率（%）表示。以1971-2000年为30年的对比时段，计算各气象站点2010-2010年的降水量距平百分率。考虑到宏观尺度的研究和运算的速度，因此采用IDW方法对2010年到2020年每日的气象数据进行空间插值，最终形成了空间尺度的干旱指数数据库。

The evaluation index for disaster-causing factors adopted in this dataset is the percentage of precipitation anomaly, which is specified in the national standard GB/T 2008 *Grade of Agricultural Drought* issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. The percentage of precipitation anomaly refers to the percentage ratio between the difference between the precipitation in a given period and the multi-year average precipitation of the same period, with the unit of percentage (%). Taking 1971–2000 as the 30-year reference period, the percentage of precipitation anomaly at each meteorological station in 2010–2010 was calculated. Considering the requirements of macro-scale research and computational efficiency, the inverse distance weighting (IDW) method was employed to perform spatial interpolation on daily meteorological data from 2010 to 2020, ultimately forming a spatial-scale drought index database.

搜集汇总

背景与挑战

背景概述

该数据集为2010-2020年中国干旱指数数据，基于国家标准GB/T 2008中的降水距平百分率指数，通过计算气象站点数据并利用IDW方法进行空间插值，形成1km分辨率的矢量数据。它主要用于农业干旱等级评估和宏观尺度研究，覆盖全国范围，数据来源于国家气候中心，需离线申请获取。