The GPM Ground Validation Campaign Reports MC3E dataset consists of various reports filed by the scientists during the Midlatitude Continental Convective Clouds Experiment (MC3E) campaign. The overarching goal was to provide the most complete characterization of convective cloud systems, precipitation, and the environment that has ever been obtained, providing constraints for model cumulus parameterizations and space-based rainfall retrieval algorithms over land that had never before been available. Several of the reports are from the planning, test flights, and preparation. Included in this dataset are Mission Scientist, Mission Manager, Instrument Scientists, and Weather Forecasts. Many reports have additional information included as attachments.