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© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 18 Feb 2019

Research article | 18 Feb 2019

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This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Science Data (ESSD).

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

André Valente1, Shubha Sathyendranath2, Vanda Brotas1,2, Steve Groom2, Michael Grant2,3, Malcolm Taberner3, David Antoine4,5, Robert Arnone6, William M. Balch7, Kathryn Barker8,9,10, Ray Barlow11, Simon Bélanger12, Jean-François Berthon13, Şükrü Beşiktepe14, Yngve Borsheim15, Astrid Bracher16,17, Vittorio Brando9,18, Elisabetta Canuti13, Francisco Chavez19, Andrés Cianca20, Hervé Claustre4, Lesley Clementson9, Richard Crout21, Robert Frouin22, Carlos García-Soto23,24, Stuart W. Gibb25, Richard Gould21, Stanford B. Hooker26, Mati Kahru22, Milton Kampel27, Holger Klein28, Susanne Kratzer29, Raphael Kudela30, Jesus Ledesma31, Hubert Loisel32, Patricia Matrai7, David McKee33, Brian G. Mitchell22, Tiffany Moisan34, Frank Muller-Karger35, Leonie O'Dowd36, Michael Ondrusek37, Trevor Platt2, Alex J. Poulton38, Michel Repecaud39, Thomas Schroeder9, Timothy Smyth2, Denise Smythe-Wright40, Heidi M. Sosik41, Michael Twardowski42, Vincenzo Vellucci4, Kenneth Voss43, Jeremy Werdell26, Marcel Wernand44, Simon Wright45, and Giuseppe Zibordi13 André Valente et al.
  • 1MARE - Marine and Environmental Sciences Centre, Faculdade de Ciências, Universidade de Lisboa, CampoGrande, 1749-016 Lisboa, Portugal
  • 2Plymouth Marine Laboratory, Plymouth, PL1 3DH, UK
  • 3EUMETSAT, Eumetsat-Allee1, 64295 Darmstadt, Germany
  • 4Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, LOV, 06230 Villefranche-sur-Mer, France
  • 5Remote Sensing and Satellite Research Group, School of Earth and Planetary Sciences, Curtin University, Perth, WA 6845, Australia
  • 6University of Southern Mississippi, Stennis Space Center, MS, USA
  • 7Bigelow Laboratory for Ocean Sciences, 60 Bigelow Dr., East Boothbay, ME 04544, Maine, USA
  • 8ARGANS Ltd, UK
  • 9CSIRO Oceans and Atmosphere, Australia
  • 10Australian Research Data Commons, Australia
  • 11Bayworld Centre for Research and Education, Cape Town, South Africa
  • 12Université du Québec à Rimouski, Rimouski (Québec), Canada
  • 13European Commission, Joint ResearchCentre, Ispra, Italy
  • 14Dokuz Eylul University, Institute of MarineScience and Technology, Izmir, Turkey
  • 15Institute of Marine Research, Bergen, Norway
  • 16Alfred-Wegener-Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany
  • 17Institute of Environmental Physics, University Bremen, Bremen, Germany
  • 18CNR-ISMAR, Rome, Italy
  • 19Monterey Bay AquariumResearch Institute, Moss Landing, CA, USA
  • 20PLOCAN-Oceanic Platform of the Canary Islands. Carretera deTaliarte, 35214 Telde, Gran Canaria, Spain
  • 21Naval Research Laboratory, StennisSpaceCenter, MS, USA
  • 22Scripps Institution of Oceanography, University of California San Diego, CA, USA
  • 23Spanish Institute of Oceanography (IEO), Corazón de María 8, 28002 Madrid, Spain
  • 24Plentziako Itsas Estazioa/ Euskal Herriko Unibetsitatea (PIE/EHU), Areatzaz/g, 48620 Plentzia, Spain
  • 25Environmental Research Institute, North Highland College, University of the Highlands and Islands, Thurso, Scotland, UK
  • 26NASA GoddardSpace Flight Center,Greenbelt, Maryland, USA
  • 27Remote Sensing Division, National Space Research Institute (INPE), Sao Jose dos Campos, Brazil
  • 28Operational Oceanography Group,Federal Maritime and Hydrographic Agency, Hamburg, Germany
  • 29Department of Ecology, Environment and Plant Sciences, Stockholm University, 106 91 Stockholm, Sweden
  • 30University of California Santa Cruz, Santa Cruz, CA, USA
  • 31Instituto del Mar del Perú, Peru
  • 32Laboratoire d'Océanologie et de Géosciences, Université du Littoral-Côte-d'Opale, Université Lille, CNRS, UMR 8187, LOG, 32 avenue Foch, Wimereux, France
  • 33Physics Dept, University of Strathclyde, Glasgow, G4 0NG, Scotland
  • 34NASA GoddardSpace Flight Center, Wallops Flight Facility, Wallops Island, VA, USA
  • 35Institute for Marine Remote Sensing/ImaRS, College of Marine Science, University of South Florida, FL, USA
  • 36Fisheries and Ecosystem Advisory Services, Marine Institute, Rinville–Oranmore, Galway, Ireland
  • 38Lyell Centre for Earth and Marine Science and Technology, Heriot-Watt University, Edinburgh, UK
  • 39FREMER Centre de Brest, Plouzane, France
  • 40Ocean Biogeochemistry and Ecosystems, National Oceanography Centre, Waterfront Campus, Southampton, UK
  • 41Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
  • 42Harbor Branch Oceanographic Institute,Fort Pierce, FL, USA
  • 43University of Miami, Coral Gables, FL, USA
  • 44Royal Netherlands Institute for Sea Research, Texel, the Netherlands
  • 45Australian Antarctic Division and the Antarctic Climate and Ecosystems Cooperative Research Centre,Hobart, Australia

Abstract. A global compilation of in situ data is useful 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 (including, inter alia, MOBY, BOUSSOLE, AERONET-OC, SeaBASS, NOMAD, MERMAID, AMT, ICES, HOT, GeP&CO) and span the period from 1997 to 2018. Observations of the following variables were compiled: spectral remote-sensing reflectances, concentrations of chlorophyll-a, spectral inherent optical properties, spectral diffuse attenuation coefficients and total suspended matter. The data were from multi-project archives acquired via 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 propagated throughout the work and made available in the final table. By making the metadata available, provenance is better documented, and it is also possible to analyse each set of data separately. This paper also describes the changes that were made to the compilation in relation to the previous version (Valente et al., 2016). The compiled data are available at

André Valente et al.
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André Valente et al.
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A compilation of global bio-optical in situ data for ocean-colour satellite applications - version two A. Valente, S. Sathyendranath, V. Brotas, S. Groom, M. Grant, M. Taberner, D. Antoine, R. Arnone, W. M. Balch, K. Barker, R. Barlow, S. Bélanger, J.-F. Berthon, Ş. Beşiktepe, Y. Borsheim, A. Bracher, V. Brando, E. Canuti, F. Chavez, A. Cianca, H. Claustre, L. Clementson, R. Crout, R. Frouin, C. García-Soto, S. W. Gibb, R. Gould, S. B. Hooker, M. Kahru, M. Kampel, H. Klein, S. Kratzer, R. Kudela, J. Ledesma, H. Loisel, P. Matrai, D. McKee, B. G. Mitchell, T. Moisan, F. Muller-Karger, L. O'Dowd, M. Ondrusek, T. Platt, A. J. Poulton, M. Repecaud, T. Schroeder, T. Smyth, D. Smythe-Wright, H. M. Sosik, M. Twardowski, V. Vellucci, K. Voss, J. Werdell, M. Wernand, S. Wright, and G. Zibordi

André Valente et al.
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Short summary
A compiled set of in situ data is important to evaluate the quality of ocean-colour satellite data records. Here we describe the compilation of global bio-optical in situ data (spanning from 1997 to 2018) used for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The compilation merges and harmonizes several in situ data sources into a simple format that could be used directly for the evaluation of satellite-derived ocean-colour data.
A compiled set of in situ data is important to evaluate the quality of ocean-colour satellite...