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

André Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Malcolm Taberner, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Belanger, Jean François Berthon, Sükrü Besiktepe, Vittorio Brando, Elisabetta Canuti, Francisco Chavez, Hervé Claustre, Richard Crout, Robert FrouinCarlos Garcia-Soto, Stuart W. Gibb, Richard Gould, Stanford Hooker, Mati Kahru, Holger Klein, Susanne Kratzer, Hubert Loisel, David McKee, Brian G. Mitchell, Tiffany Moisan, Frank Muller-Karger, Leonie O'Dowd, Michael Ondrusek, Alex J. Poulton, Michel Repecaud, Timothy Smyth, Heidi M. Sosik, Michael Twardowski, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Giuseppe Zibordi

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Abstract

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, GePandCO), span between 1997 and 2012, and have a global distribution. Observations of the following variables were compiled: spectral remote-sensing reflectances, concentrations of chlorophyll α, 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).

Original languageEnglish
Pages (from-to)235-252
Number of pages18
JournalEarth System Science Data
Volume8
Issue number1
DOIs
Publication statusPublished - 3 Jun 2016

Keywords

  • ocean colour
  • ocean color
  • bio-optics
  • remote sensing reflectance
  • chlorophyll concentration
  • algal pigment absorption coefficient
  • organic matter absorption coefficient
  • particle backscattering coefficient
  • diffuse attenuation coefficient
  • spectral inherent optical properties

Cite this

Valente, A., Sathyendranath, S., Brotas, V., Groom, S., Grant, M., Taberner, M., Antoine, D., Arnone, R., Balch, W. M., Barker, K., Barlow, R., Belanger, S., Berthon, J. F., Besiktepe, S., Brando, V., Canuti, E., Chavez, F., Claustre, H., Crout, R., ... Zibordi, G. (2016). A compilation of global bio-optical in situ data for ocean-colour satellite applications. Earth System Science Data, 8(1), 235-252. https://doi.org/10.5194/essd-8-235-2016