Fiducial reference measurements are in-situ data traceable to metrology standards,
with associated uncertainties. This paper presents the methodology used to derive the uncertainty
budget for underway, above-water measurements from the Seabird Hyperspectral Surface
Acquisition System deployed on an Atlantic Meridional Transect in ...
Fiducial reference measurements are in-situ data traceable to metrology standards,
with associated uncertainties. This paper presents the methodology used to derive the uncertainty
budget for underway, above-water measurements from the Seabird Hyperspectral Surface
Acquisition System deployed on an Atlantic Meridional Transect in 2018. The average uncertainty
of remote sensing reflectance for clear sky days was ∼ 6% at wavelengths < 490 nm and ∼ 12%
at wavelengths > 550 nm. The environmental variability such as sun position, wind speed and
skylight distribution caused the greatest uncertainty. The different components of the uncertainty
budget are critically assessed to indicate how the measurement procedure could be improved
through reducing the principal uncertainty sources.
