WATERHYPERNET - A network of hyperspectral radiometers for multi-satellite water reflectance validation applied to the wide and asymmetric bands of Sentinel-2A&B

RUDDICK, K.; VANSTEENWEGEN, D.; VAN DER ZANDE, D.; DOXARAN, D.; DOGLIOTTI, A.I.; FANG, S.

Encuentro; 2nd Sentinel-2 Validation Team Meeting; 2018

A network of hyperspectral radiometers isbeing developed for radiometric validation of satellite missions. This networkfollows closely the AERONET-OC federation concept [Zibordi et al, 2009] butuses the TRIOS/RAMSES hyperspectral radiometer. The instrument system consistsof one radiance and one irradiance sensor on a pointing robot, controlled by amicroprocessor and supplemented with GPS, inclinometer and video camera datafeeds. The measurement protocol is based on the abovewater method of [Mobley,1999], but includes additional scenarios for different viewing zenith andazimuth configurations. The systems will be deployed initially in Belgiancoastal and inland waters, then at HYPERMAQ project partner sites in Argentinaand France before full international expansion. The network will provide water reflectance data for the radiometric validationof all visible and near infrared bands of all optical missions,including Sentinel-2A&B, Sentinel-3A&B, PROBA-V, MODIS-AQUA&TERRA,VIIRS, Landsat-8, Pléiades, CHRIS-PROBA, MSG-SEVIRI ? ENMAP, PACE, MTG and ...any future optical missions, including nanosatellites. This presentation willprovide the general context as well as the specific applicationto Sentinel-2A&B, showing the advantages of hyperspectral radiometry forthe validation of wide and/or spectrally asymmetric bands.