Overview of the Parsivel instrument:

• Measures size and fall velocity of hydrometeors
• Present weather sensor
• Sampling area: ~50 cm2, varies with drop diameter
• Number of size and velocity bins: 32 x 32 matrix
• Drop size range: 0.06-24.5 mm
• Velocity range: 0.05-20.8 m/sec
• Operation period at Wallops Island: Spring 2002 - present
• Manufacturer: OTT in Germany www.ott-hydrometry.de