The Global Hydrology Resource Center (GHRC) published the GPM Ground Validation Rain Gauges NASA ACHIEVE IPHEx dataset which includes data from the OSi Optical Rain Gauge (ORG815) and a standard tipping bucket rain gauge. Both instruments are part of the NASA Goddard Space Flight Center (GSFC) ACHIEVE ground-based mobile laboratory. Data was gathered during the GPM Ground Validation Integrated Precipitation and Hydrology Experiment (IPHEx) in North Carolina from May 1, 2014 through June 15, 2014. Precipitation rate, temperature, and cumulative precipitation were measured. Data files are available in the netCDF3 data format.
