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| Tan, Jing; Frouin, Robert; Jolivet, Dominique; Compiegne, Mathieu; Ramon, Didier. |
| The operational MEdium Resolution Imaging Spectrometer (MERIS) daily mean photosynthetically available radiation (PAR) product generated by the NASA Ocean Biology Processing Group (OBPG) was evaluated in clear sky conditions against in-situ measurements at various sites in the northwestern Mediterranean Sea (BOUSSOLE buoy), the northwestern Pacific (CCE-1 and -2 moorings), and the northeastern Atlantic (COVE platform). The measurements were first checked and corrected for calibration errors and uncertainties in data processing by comparing daily means for clear days (i.e., no clouds from sunrise to sunset and low aerosol abundance) with theoretical values from an accurate Monte Carlo radiative transfer code. The OBPG algorithm performed well when sky was... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00675/78672/80860.pdf |
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| Dessailly, David; Loisel, Hubert; Steinmetz, François; Vantrepotte, Vincent; Satra Le Bris, Catherine; Ramon, Didier; Meillon, Julien. |
| In the frame of GlobCoast project (11/2012-11/2015), funded by the French National Research Agency (ANR), a completely new dataset covering the global coastal waters has been processed. For MERIS period (2002-2012), SPM, Chlorophyl, acdom, DOC, Kd, anw and bbp, are now available at global scale at 1 km resolution. Monthly climatologies (with variation coefficient), eight days and monthly means are available. Results of advanced time series analysis from census-X11 method (trend, seasonal and irregular contribution) are also available. The data, projected on a sinusoidal equal-area grid, have been filtered to only keep the coastal waters. Even with filtering each image has a potential of 64 millions of pixels. To deal with this a specific storage format... |
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| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00357/46823/46693.pdf |
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