A compilation of global bio-optical in situ data for ocean-colour satellite applications

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Valente, André
Sathyendranath, Shubha
Brotas, Vanda
Groom, Steven
Grant, Michael
Taberner, Malcolm
Antoine, David
Arnone, Robert
Balch, William M.
Barker, Kathryn
Barlow, Ray
Belanger, Simon
Berthon, Jean-François
Besiktepe, Sukru
Brando, Vittorio
Canuti, Elisabetta
Chavez, Francisco P.
Claustre, Hervé
Crout, Richard
Frouin, Robert
García-Soto, Carlos
Gibb, Stuart W.
Gould, Richard
Hooker, Stanford B.
Kahru, Mati
Klein, Holger
Kratzer, Susanne
Loisel, Hubert
McKee, David
Mitchell, Brian G.
Moisan, Tiffany
Muller-Karger, Frank E.
O'Dowd, Leonie
Ondrusek, Michael
Poulton, Alex J.
Repecaud, Michel
Smyth, Timothy
Sosik, Heidi M.
Twardowski, Michael
Voss, Kenneth
Werdell, Jeremy
Wernand, Marcel
Zibordi, Giuseppe
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A compiled set of in situ data is important to evaluate the quality of ocean-colour satellite-data records. Here we describe the data compiled for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The data were acquired from several sources (MOBY, BOUSSOLE, AERONET-OC, SeaBASS, NOMAD, MERMAID, AMT, ICES, HOT, GeP&CO), span between 1997 and 2012, and have a global distribution. Observations of the following variables were compiled: spectral remote-sensing reflectances, concentrations of chlorophyll a, spectral inherent optical properties and spectral diffuse attenuation coefficients. The data were from multi-project archives acquired via the open internet services or from individual projects, acquired directly from data providers. Methodologies were implemented for homogenisation, quality control and merging of all data. No changes were made to the original data, other than averaging of observations that were close in time and space, elimination of some points after quality control and conversion to a standard format. The final result is a merged table designed for validation of satellite-derived ocean-colour products and available in text format. Metadata of each in situ measurement (original source, cruise or experiment, principal investigator) were preserved throughout the work and made available in the final table. Using all the data in a validation exercise increases the number of matchups and enhances the representativeness of different marine regimes. By making available the metadata, it is also possible to analyse each set of data separately. The compiled data are available at doi:10.1594/PANGAEA.854832 (Valente et al., 2015).
© The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Earth System Science Data 8 (2016): 235-252, doi:10.5194/essd-8-235-2016.
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Earth System Science Data 8 (2016): 235-252
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