The NASA Global Hydrology Resource Center (GHRC) DAAC published the NASA S-band Dual Polarimetric Radar (NPOL) instrument micro article. The NPOL is a research grade dual polarimetric Doppler radar with equivalent capabilities to the Doppler radars of the U.S. National Weather Service’s Next Generation Weather Radar (NEXRAD) network. Unlike the NEXRAD radars, NPOL is one of two completely transportable, research-grade S-band radar systems in the world. When not on deployment, it resides and operates near NASA’s Wallops Flight Facility. NPOL has been used for a variety of research purposes include satellite precipitation validation, precipitation studies, and precipitation microphysics. This micro article provides an overview of NPOL and its applications to support current and future GHRC publications. The micro article is available at: https://ghrc.nsstc.nasa.gov/home/micro-articles/instrument-nasa-s-band-dual-polarimetric-radar-npol