bmdc.be:dataset:2340 English UTF-8 Dataset Royal Belgian Institute of Natural Sciences (RBINS), Directorate Natural Environment (OD Nature), Belgian Marine Data Centre (BMDC) Royal Belgian Institute of Natural Sciences (RBINS), Directorate Natural Environment (OD Nature), Belgian Marine Data Centre (BMDC) Institut royal des Sciences naturelles de Belgique (IRSNB), Direction opérationnelle Milieux naturels (DO Nature), Belgian Marine Data Centre (BMDC) Koninklijk Belgisch Instituut voor Natuurwetenschappen (KBIN), Operationele Directie Natuurlijk Milieu (OD Natuur), Belgian Marine Data Centre (BMDC) Königliches Belgisches Institut für Naturwissenschaften (KBIN), Operationelle Direktion Natürliche Umwelt (OD Natur), Belgian Marine Data Centre (BMDC) Vautierstraat 29 Vautierstraat 29 Vautierstraat 29 Rue Vautier 29 Vautierstraat 29 Brussel Brussels Brussel Bruxelles Brüssel 1000 Belgium Belgium Belgique België Belgien bmdc@naturalsciences.be https://www.bmdc.be http Point of contact 2026-04-24T15:29:30.300Z Geographic information -- Metadata ISO 19115:2003/19139 http://www.opengis.net/def/crs/EPSG/0/4258 EPSG WATERHYPERNET: Dataset of in situ above-water hyperspectral autonomous optical radiometry measurements at the O1BE station 2020-03-25T11:20:39Z Creation 2021-11-22T10:04:59Z Revision 2026-04-24T15:29:30.300Z Publication Digital Object Identifier 2016-05-19 https://doi.org/10.24417/bmdc.be:dataset:2340 Belgian Marine Data Centre bmdc.be:dataset:2340 This dataset is composed of the following sources: Kevin Ruddick, Clémence Goyens (2021). WATERHYPERNET: Dataset of in situ above-water hyperspectral autonomous optical radiometry measurements at the O1BE station. This dataset contains data from the WATERHYPERNET network at the O1BE station (Blue Accelerator Research Tower 1, Oostende, Belgium, 51.246°N and 2.919°E). WATERHYPERNET is a network of hyperspectral above-water autonomous downwelling irradiance, downward (sky ) and upward (water) radiance and derived water-leaving radiance and reflectance acquired in the visible, near-infrared (and shortwave infrared) spectral range at different water sites. WATERHYPERNET includes data from the PANTHYR (two TRIOS/RAMSES commercial off-the-shelf (COTS) hyperspectral radiometers mounted on a FLIR PTU-D48E COTS pan-and-tilt pointing system, Vansteenwegen et al., Remote Sens. 2019, 11(11), 1360) and HYPSTAR radiometers (i.e., lower cost hyperspectral radiometer mounted on autonomous pointing systems with embedded calibration devices developed in the frame of the H2020 HYPERNETS project with grant number 775983, www.hypernets.eu). Data are quality checked and accompanied with uncertainty estimates for the validation of all optical satellite missions. Royal Belgian Institute of Natural Sciences (RBINS) Royal Belgian Institute of Natural Sciences (RBINS) Institut royal des Sciences naturelles de Belgique (IRSNB) Koninklijk Belgisch Instituut voor Natuurwetenschappen (KBIN) Königliches Belgisches Institut für Naturwissenschaften (KBIN) Natur) Vautierstraat 29 Vautierstraat 29 Vautierstraat 29 Rue Vautier 29 Vautierstraat 29 Brussel Brussels Brussel Bruxelles Brüssel 1000 Belgium Belgium Belgique België Belgien info@naturalsciences.be https://www.naturalsciences.be http Publisher Royal Belgian Institute of Natural Sciences (RBINS), Directorate Natural Environment (OD Nature), Belgian Marine Data Centre (BMDC) Royal Belgian Institute of Natural Sciences (RBINS), Directorate Natural Environment (OD Nature), Belgian Marine Data Centre (BMDC) Institut royal des Sciences naturelles de Belgique (IRSNB), Direction opérationnelle Milieux naturels (DO Nature), Belgian Marine Data Centre (BMDC) Koninklijk Belgisch Instituut voor Natuurwetenschappen (KBIN), Operationele Directie Natuurlijk Milieu (OD Natuur), Belgian Marine Data Centre (BMDC) Königliches Belgisches Institut für Naturwissenschaften (KBIN), Operationelle Direktion Natürliche Umwelt (OD Natur), Belgian Marine Data Centre (BMDC) Vautierstraat 29 Vautierstraat 29 Vautierstraat 29 Rue Vautier 29 Vautierstraat 29 Brussel Brussels Brussel Bruxelles Brüssel 1000 Belgium Belgium Belgique België Belgien bmdc@naturalsciences.be https://www.bmdc.be http Custodian Royal Belgian Institute of Natural Sciences (RBINS) Royal Belgian Institute of Natural Sciences (RBINS) Institut royal des Sciences naturelles de Belgique (IRSNB) Koninklijk Belgisch Instituut voor Natuurwetenschappen (KBIN) Königliches Belgisches Institut für Naturwissenschaften (KBIN) Natur) Vautierstraat 29 Vautierstraat 29 Vautierstraat 29 Rue Vautier 29 Vautierstraat 29 Brussel Brussels Brussel Bruxelles Brüssel 1000 Belgium Belgium Belgique België Belgien info@naturalsciences.be https://www.naturalsciences.be http Owner Royal Belgian Institute for Natural Sciences (RBINS), Directorate Natural Environment (OD Nature), Remote Sensing and Ecosystem Modelling (REMSEM) Vautierstraat 29 Vautierstraat 29 Vautierstraat 29 Rue Vautier 29 Vautierstraat 29 Brussel Brussels Brussel Bruxelles Brüssel 1000 Belgium Belgium Belgique België Belgien remsem@naturalsciences.be https://odnature.naturalsciences.be/remsem/ http Author Autonomous measurements Radiance Hyperspectral reflectance Ground-truth Satellite validation Irradiance Theme Ocean colour and earth-leaving visible waveband spectral radiation Theme NERC Vocabulary Server - P02 Vocabulary version 2.0 aquatic environment earth observation albedo Theme GEMET - Concepts, version 4.2.1 2021-06-01 Publication 4.2.1 coastal environment Küstenregion coastal environment environnement côtier kustmilieu marine environment Theme GEMET - Concepts, version 4.2.1 2021-06-01 Publication 4.2.1 Other restrictions https://creativecommons.org/licenses/by-nc-nd/4.0/ Other restrictions No limitations on public access. No limitations on public access. Geen beperkingen op openbare toegang. Pas de restrictions concernant l'accès public. Öffentliche Zugang nicht beschränkt. Data delivered under the Creative Commons licence Attribution-NonCommercial-NoDerivs (CC BY-NC-ND) Unclassified Text table English oceans true 2.919327 2.919327 51.246405 51.246405 2019-12-01 text/html Unknown Royal Belgian Institute of Natural Sciences (RBINS), Directorate Natural Environment (OD Nature), Belgian Marine Data Centre (BMDC) Royal Belgian Institute of Natural Sciences (RBINS), Directorate Natural Environment (OD Nature), Belgian Marine Data Centre (BMDC) Institut royal des Sciences naturelles de Belgique (IRSNB), Direction opérationnelle Milieux naturels (DO Nature), Belgian Marine Data Centre (BMDC) Koninklijk Belgisch Instituut voor Natuurwetenschappen (KBIN), Operationele Directie Natuurlijk Milieu (OD Natuur), Belgian Marine Data Centre (BMDC) Königliches Belgisches Institut für Naturwissenschaften (KBIN), Operationelle Direktion Natürliche Umwelt (OD Natur), Belgian Marine Data Centre (BMDC) Vautierstraat 29 Vautierstraat 29 Vautierstraat 29 Rue Vautier 29 Vautierstraat 29 Brussel Brussels Brussel Bruxelles Brüssel 1000 Belgium Belgium Belgique België Belgien bmdc@naturalsciences.be https://www.bmdc.be http Custodian text/html Unknown 0.008436 https://waterhypernet.org/data/oostende-blue-accelerator-research-tower-1-rt1/ WWW:LINK-1.0-http--link WATERHYPERNET: Dataset of in situ above-water hyperspectral autonomous optical radiometry measurements at the O1BE station. Kevin Ruddick, Clémence Goyens An HTTP link to download Download https://doi.org/10.24417/bmdc.be:dataset:2340 DOI Digital Object Identifier (DOI) Dataset The autonomous hyperspectral systems perform automated measurements every 15 a 30 minutes during daylight. Total upwelling radiance (at 40° nadir viewing angle), downwelling radiance (at 140° nadir viewing angle) and downwelling irradiance (at 180° nadir viewing angle) are measured at given relative azimuth to the sun (90°, 135°, 225° and/or 270° as a function of the sun azimuth, instrument location and platform shading of the water target) for the computation of the water leaving radiance and reflectance (see Vansteenwegen et al., Remote Sens. 2019, 11(11) and references therein). Auxiliary data, e.g., wind speed, air-water interface reflectance, used for the data processing are added in the metadata. The PANTHYR provides reflectance measurements for a spectral range of 320–950 nm with a full-width half-maximum (FWHM) spectral resolution of 10 nm and a spectral sampling of 2.5 nm. The HYPSTAR Standard Range (SR) model provides visible and near-infrared (VNIR, 380-1020 nm) data with a spectral sampling (resolution) of ~0.5 nm (3 nm). The data are corrected for the NIR Similarity Spectrum (Ruddick et al., Limnol. Oceanogr., 2006, 51(2)) to remove any white error from inadequate skyglint correction. In addition, the following quality checks are performed and data are removed before distribution if: (1) the downwelling radiance/irradiance ratio is high (removing measurements affected by clouds in front of the sun or in the sky-viewing direction), (2) the coefficients of variation for the reflectance is high (removing high variability in illumination and/or target reflectance), (3) the retrieved reflectance is negative between 350 and 900 nm, and, (4) a reflectance bump is observed around 810 nm (removing bright waters). For the HYPSTAR data, uncertainties are also propagated through the full processing chain, including treatment of temporal and wavelength error-covariance, following the methodology defined in the Guide to the Expression of Uncertainty in Measurement (GUM). For more information about the data processing, see https://hypernets-processor.readthedocs.io/en/latest/content/atbd/atbd.html).