WALRUS Hyperspectral Radiometer Buoy

WALRUS with E_s,

L_s, L_u(air), and

dual L_u(water)

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.

WALRUS
in-situ

Measurements

Up to 5 simultaneous hyperspectral radiometric measurements, in a variety of configurations
- Irradiance and radiance
- Upwelling and downwelling
- Above and below the surface
Various spectrometer options
- Spectral range up to 350 to 850 nm, or 400 to 900 nm
- Spectral resolution as fine as 0.4 nm

Features

System features similar to HydroRad family
Real-time or internally-logged data
Sophisticated scriptable logging
Large nonvolatile data storage
Power from internal batteries or external source
Compass and tilt/roll sensor
Daisy-chain with HydroRads for additional measurements

Applications

Remote sensing validation
Ocean color research
Environmental monitoring