The GPM Ground Validation C-Band Radar LPVEx datasets include radar reflectivity data from the Kumpula (KUM) dual-polarimetric C-Band Doppler radar in Finland during the Global Precipitation Measurement (GPM) mission Light Precipitation Validation Experiment (LPVEx) field campaign. This radar, along with four others, provided reflectivity measurements for light precipitation systems during LPVEx. This field campaign took place around the Gulf of Finland, aiming to provide additional high-latitude, light rainfall measurements for the improvement of GPM satellite precipitation algorithms. The Kumpula C-band Radar data files are available in RAW and UF format, with browse imagery in PNG format from September 01, 2010 through January 31, 2011.