Solar Irradiance

Direct Normal Irradiance (DNI) and Global Horizontal Irradiance (GHI) as a raster from the National Solar Radiation Database of the National Renewable Energy Laboratory (NREL)

直接法向辐照度（Direct Normal Irradiance, DNI）与全球水平辐照度（Global Horizontal Irradiance, GHI）栅格数据，源自美国国家可再生能源实验室（National Renewable Energy Laboratory, NREL）的国家太阳能辐射数据库。