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WALRUS Hyperspectral Radiometer Buoy

WALRUS on deck with extended bottom spar


extended spar

for 2-meter

total depth

Select the set of radiometric quantities, and their positions relative to the water surface, that best suit your research goals

Collector Options
  • Collector types: Radiance (L) and Irradiance (E)
  • Above or below the water surface
  • Upwelling or downwelling


Lower Spar options
  • 1-meter total depth, collectors at top and/or bottom
  • 2-meter total depth, collectors at top, middle, and/or bottom




Four configurations are shown below.  Each has 5 collectors:

  • Sky Irradiance in air (Es)
  • 1 or 2 upwelling radiance in air (Lu+)
  • 1, 2 or 3 upwelling radiance in water (Lu-)
  • The first configuration also measures sky radiance (Lds)

Line drawing of WALRUS with 2-meter spar depth Line drawing of WALRUS with 1.5-meter spar depth Line drawing of WALRUS with 1-meter spar depth and redundant Lu collectors Line drawing of WALRUS with 1-meter spar depth

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All specifications subject to change without notice.