FlowCapt sensors measure snow particles as they bounce and move above the surface of the snowpack. These sensors measure the total number of particles that blow into contact with the sensor, the intensity at which they hit the sensor, and the timing of when they hit the sensor.

Number deployed on SOS Project: 2

Make/model used on SOS Project: ISAW

SOS researcher Ethan Gutmann, of the National Center for Atmospheric Research, describes the purpose and function of flow cap sensors on the Sublimation of Snow Project.