GPM flying over Earth with a data swath visualized.

NPOL

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.

Examples of NPOL-Generated Images

NPOL data example

Example NPOL data