1. This is the radiation dataset described by the data paper "Global radiation, photosynthetically active radiation, and the diffuse components dataset of China, 1981¨C2010 " submitted to Earth system science data. 2. The dataset includes four subsets, i.e. global radiation, diffuse radiation, PAR, and diffuse PAR; and each subset has two folders to incorporate the monthly and yearly data, except diffuse PAR. We only upload yearly diffuse PAR, if you need monly diffuse PAR, please visit China Scientific Data(http://www.sciencedb.cn/dataSet/handle/142) [Ren X, He H, Zhang L et al. Monthly diffuse photosynthetically active radiation dataset of China (1981¨C2010). China Scientific Data 1 (2017), DOI: 10.11922/csdata.180.2016.0090]. 3. The units of radiation data in this dataset are all set to MJ m-2 month-1 (monthly)/ MJ m-2 yr-1 (yearly). 4. We provide two types of data formats, i.e. ASCII text and ArcGIS GRID, as well as the Python code that converts TXT to GRID. 5. If you have any questions,please contact Xiaoli Ren (renxl@igsnrr.ac.cn) or Honglin He (hehl@igsnrr.ac.cn). 2018-3-15