Results from Verification of Reference Irradiance and Radiance Sources Laboratory Calibration Experiment Campaign

• Published in: Remote sensing (Basel, Switzerland) Vol. 12; no. 14; p. 2220
• Main Authors: Białek, Agnieszka, Goodman, Teresa, Woolliams, Emma, Brachmann, Johannes F. S., Schwarzmaier, Thomas, Kuusk, Joel, Ansko, Ilmar, Vabson, Viktor, Lau, Ian C., MacLellan, Christopher, Marty, Sabine, Ondrusek, Michael, Servantes, William, Taylor, Sarah, Van Dommelen, Ronnie, Barnard, Andrew, Vellucci, Vincenzo, Banks, Andrew C., Fox, Nigel, Vendt, Riho, Donlon, Craig, Casal, Tânia
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.07.2020; MDPI
• Subjects: Calibration; Environmental Engineering; Environmental Sciences; Experiments; fiducial reference measurements; Field of view; Instrumentation and Detectors; Irradiance; Laboratories; Laboratory tests; Lamps; ocean colour; Ocean, Atmosphere; Optics; Physics; Quality control; Radiance; Radiometers; Remote sensing; Satellites; Sciences of the Universe; Spectra; Spectral bands; spectral irradiance comparison; spectral radiance sources comparison; Tungsten; Verification; ocean colour; spectral irradiance comparison; fiducial reference measurements; spectral radiance sources comparison
• ISSN: 2072-4292; 2072-4292
• DOI: 10.3390/rs12142220

We present the results from Verification of Reference Irradiance and Radiance Sources Laboratory Calibration Experiment Campaign. Ten international laboratories took part in the measurements. The spectral irradiance comparison included the measurements of the 1000 W tungsten halogen filament lamps in the spectral range of 350 nm–900 nm in the pilot laboratory. The radiance comparison took a form of round robin where each participant in turn received two transfer radiometers and did the radiance calibration in their own laboratory. The transfer radiometers have seven spectral bands covering the wavelength range from 400 nm–700 nm. The irradiance comparison results showed an agreement between all lamps within ±1.5%. The radiance comparison results presented higher than expected discrepancies at the level of ±4%. Additional investigation to determine the causes for these discrepancies identified them as a combination of the size-of-source effect and instrument effective field of view that affected some of the results.