GLORIA - A globally representative hyperspectral in situ dataset for optical sensing of water quality
Moritz K. Lehmann, Daniela Gurlin, Nima Pahlevan, Krista Alikas, Ted Conroy, Janet Anstee, Sundarabalan V. Balasubramanian, Cláudio Clemente Faria Barbosa, Caren Binding, Astrid Bracher, Mariano Bresciani, Ashley M. Burtner, Zhigang Cao, Arnold G. Dekker, Courtney A. Di Vittorio, Nathan Drayson, Reagan M. Errera, Virginia Laura Fernández, Dariusz Ficek, Cédric G. Fichot, Peter Gege, Claudia Giardino, Anatoly A. Gitelson, Steven R. Greb, Hayden Henderson, Hiroto HIGA, Abolfazl Irani Rahaghi, Cédric Jamet, Dalin Jiang, Thomas Jordan, Kersti Kangro, Jeremy A. Kravitz, Arne S. Kristoffersen, Raphael M. Kudela, Lin Li, Martin Ligi, Hubert Loisel, Steven E. Lohrenz, Ronghua Ma, Daniel Andrade Maciel, Tim Malthus, Bunkei Matsushita, Mark A. Matthews, Camille Minaudo, Deepak R. Mishra, Sachidananda Mishra, Tim Moore, Wesley J. Moses, Nguyễn Thị Thu Hà, Evlyn Márcia Leão de Moraes Novo, Stéfani Novoa, Daniel Odermatt, David M. O’Donnell, Leif G. Olmanson, Michael Ondrusek, Natascha Oppelt, Sylvain Ouillon, Waterloo Pereira Filho, Stefan Plattner, Antonio Ruiz Verdú, Salem Ibrahim Salem, John F. Schalles, Stefan Simis, Eko Siswanto, Brandon Smith, Ian Somlai-Schweiger, Mariana Altenburg Soppa, Evangelos Spyrakos, Elinor Tessin, H.J. van der Woerd, Andrea Vander Woude, Ryan Vandermeulen, Vincent Vantrepotte, Marcel Robert Wernand, Mortimer Werther, Kyana Young, Linwei Yue
Abstract
The development of algorithms for remote sensing of water quality (RSWQ) requires a large amount of in situ data to account for the bio-geo-optical diversity of inland and coastal waters. The GLObal Reflectance community dataset for Imaging and optical sensing of Aquatic environments (GLORIA) includes 7,572 curated hyperspectral remote sensing reflectance measurements at 1 nm intervals within the 350 to 900 nm wavelength range. In addition, at least one co-located water quality measurement of chlorophyll a, total suspended solids, absorption by dissolved substances, and Secchi depth, is provided. The data were contributed by researchers affiliated with 59 institutions worldwide and come from 450 different water bodies, making GLORIA the de-facto state of knowledge of in situ coastal and inland aquatic optical diversity. Each measurement is documented with comprehensive methodological details, allowing users to evaluate fitness-for-purpose, and providing a reference for practitioners planning similar measurements. We provide open and free access to this dataset with the goal of enabling scientific and technological advancement towards operational regional and global RSWQ monitoring.