CoastColour Round Robin data sets

A database to evaluate the performance of algorithms for the retrieval of water quality parameters in coastal waters

B. Nechad, K. Ruddick, T. Schroeder, K. Oubelkheir, D. Blondeau-Patissier, N. Cherukuru, V. Brando, A. Dekker, L. Clementson, A. C. Banks, S. Maritorena, P. J. Werdell, C. Sá, V. Brotas, I. Caballero De Frutos, Y. H. Ahn, S. Salama, G. Tilstone, V. Martinez-Vicente, D. Foley & 8 others M. McKibben, J. Nahorniak, Tawnya Peterson, A. Siliò-Calzada, R. Röttgers, Z. Lee, M. Peters, C. Brockmann

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The use of in situ measurements is essential in the validation and evaluation of the algorithms that provide coastal water quality data products from ocean colour satellite remote sensing. Over the past decade, various types of ocean colour algorithms have been developed to deal with the optical complexity of coastal waters. Yet there is a lack of a comprehensive intercomparison due to the availability of quality checked in situ databases. The CoastColour Round Robin (CCRR) project, funded by the European Space Agency (ESA), was designed to bring together three reference data sets using these to test algorithms and to assess their accuracy for retrieving water quality parameters. This paper provides a detailed description of these reference data sets, which include the Medium Resolution Imaging Spectrometer (MERIS) level 2 match-ups, in situ reflectance measurements, and synthetic data generated by a radiative transfer model (HydroLight). These data sets, representing mainly coastal waters, are available from doi:10.1594/PANGAEA.841950. The data sets mainly consist of 6484 marine reflectance (either multispectral or hyperspectral) associated with various geometrical (sensor viewing and solar angles) and sky conditions and water constituents: total suspended matter (TSM) and chlorophyll a (CHL) concentrations, and the absorption of coloured dissolved organic matter (CDOM). Inherent optical properties are also provided in the simulated data sets (5000 simulations) and from 3054 match-up locations. The distributions of reflectance at selected MERIS bands and band ratios, CHL and TSM as a function of reflectance, from the three data sets are compared. Match-up and in situ sites where deviations occur are identified. The distributions of the three reflectance data sets are also compared to the simulated and in situ reflectances used previously by the International Ocean Colour Coordinating Group (IOCCG, 2006) for algorithm testing, showing a clear extension of the CCRR data which covers more turbid waters.

Original languageEnglish (US)
Pages (from-to)319-348
Number of pages30
JournalEarth System Science Data
Volume7
Issue number2
DOIs
StatePublished - Nov 20 2015

Fingerprint

coastal water
reflectance
water quality
ocean color
MERIS
chlorophyll a
parameter
dissolved organic matter
optical property
in situ measurement
radiative transfer
sensor
remote sensing
water
in situ
simulation

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

Cite this

CoastColour Round Robin data sets : A database to evaluate the performance of algorithms for the retrieval of water quality parameters in coastal waters. / Nechad, B.; Ruddick, K.; Schroeder, T.; Oubelkheir, K.; Blondeau-Patissier, D.; Cherukuru, N.; Brando, V.; Dekker, A.; Clementson, L.; Banks, A. C.; Maritorena, S.; Werdell, P. J.; Sá, C.; Brotas, V.; Caballero De Frutos, I.; Ahn, Y. H.; Salama, S.; Tilstone, G.; Martinez-Vicente, V.; Foley, D.; McKibben, M.; Nahorniak, J.; Peterson, Tawnya; Siliò-Calzada, A.; Röttgers, R.; Lee, Z.; Peters, M.; Brockmann, C.

In: Earth System Science Data, Vol. 7, No. 2, 20.11.2015, p. 319-348.

Research output: Contribution to journalArticle

Nechad, B, Ruddick, K, Schroeder, T, Oubelkheir, K, Blondeau-Patissier, D, Cherukuru, N, Brando, V, Dekker, A, Clementson, L, Banks, AC, Maritorena, S, Werdell, PJ, Sá, C, Brotas, V, Caballero De Frutos, I, Ahn, YH, Salama, S, Tilstone, G, Martinez-Vicente, V, Foley, D, McKibben, M, Nahorniak, J, Peterson, T, Siliò-Calzada, A, Röttgers, R, Lee, Z, Peters, M & Brockmann, C 2015, 'CoastColour Round Robin data sets: A database to evaluate the performance of algorithms for the retrieval of water quality parameters in coastal waters', Earth System Science Data, vol. 7, no. 2, pp. 319-348. https://doi.org/10.5194/essd-7-319-2015
Nechad, B. ; Ruddick, K. ; Schroeder, T. ; Oubelkheir, K. ; Blondeau-Patissier, D. ; Cherukuru, N. ; Brando, V. ; Dekker, A. ; Clementson, L. ; Banks, A. C. ; Maritorena, S. ; Werdell, P. J. ; Sá, C. ; Brotas, V. ; Caballero De Frutos, I. ; Ahn, Y. H. ; Salama, S. ; Tilstone, G. ; Martinez-Vicente, V. ; Foley, D. ; McKibben, M. ; Nahorniak, J. ; Peterson, Tawnya ; Siliò-Calzada, A. ; Röttgers, R. ; Lee, Z. ; Peters, M. ; Brockmann, C. / CoastColour Round Robin data sets : A database to evaluate the performance of algorithms for the retrieval of water quality parameters in coastal waters. In: Earth System Science Data. 2015 ; Vol. 7, No. 2. pp. 319-348.
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