GPM flying over Earth with a data swath visualized.


The NPOL instrument, a large radar dish attached to a trailer under a blue sky

The NASA NPOL radar is a research grade S-band, scanning dual-polarimetric radar.  The NPOL underwent a complete antenna system upgrade in 2010 and is one of two fully transportable research-grade S-band systems in the world.  It is used to make accurate volumetric measurements of precipitation including rainfall rate, particle size distributions, water contents and precipitation type.

Click here to view the latest NPOL data from the GPM Precipitation Science Research Facility at Wallops  Flight Facility.

Examples of NPOL-Generated Images

NPOL data example

Example NPOL data