The NASA Global Hydrology Resource Center (GHRC) Distributed Active Archive Center (DAAC) published the GPM Ground Validation Physicum Building Mast Meteorological Data LPVEx dataset. This dataset consists of meteorological data (temperature, pressure, wind, precipitation, and radiation) collected from the Station for Measuring Ecosystem-Atmosphere Relations III (SMEAR III) at the University of Helsinki’s Physicum building rooftop weather station in Helsinki, Finland. These data were collected during the Global Precipitation Measurement (GPM) mission Light Precipitation Validation Experiment (LPVEx) field campaign that took place around the Gulf of Finland, aiming to provide additional high-latitude, light rainfall measurements for the improvement of GPM satellite precipitation algorithms. These meteorological data files are available from September 16 through October 22, 2010 in ASCII-CSV and ASCII text formats. It should be noted that these dataset files are not available for each day of the campaign period. Missing dates include 09/23/10 - 10/10/10, 10/13/10, and 10/15/10 - 10/18/10. There are also no .CSV files for 09/22/10 and 10/22/10 and no .txt file for 09/19/10.