WaLRUS II Hyperspectral Radiometer Buoy

WaLRUS II with E_s,

and multiple L_u

collectors.

Water-Leaving Radiance Unison Spectrometer

Self-contained, tethered buoy with multiple hyperspectral radiometers, internal batteries and data logging. Optimized for the most accurate possible determination of remote-sensing reflectance, water-leaving radiance, and other radiometric measurements at or near the water surface. Operates on the surface, or profiling at depths up to 100 meters.

WaLRUS II
in-situ

Measurements

Multiple simultaneous full-spectrum radiometric measurements, in a variety of configurations
Simultaneous measurements above and below the water surface
Irradiance
Radiance
Upwelling
Downwelling
Typical spectral range 340 to 850 nm
Spectral resolution 0.4 nm

Features

Tilt-roll-heading sensor
Real-time or internally-logged data
Sophisticated scriptable logging
Large nonvolatile data storage
Power from internal batteries or external source
Optional depth transducer for profiling applications
Use with HydroRads for additional measurements

Applications

Remote sensing validation
Ocean color research
Environmental monitoring