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Trolliet, Melodie; Walawender, Jakub P.; Bourles, Bernard; Boilley, Alexandre; Trentmann, Joerg; Blanc, Philippe; Lefevre, Mireille; Wald, Lucien. |
This paper assesses the merits and drawbacks of several data sets of solar downwelling radiation received at the horizontal surface of the tropical Atlantic Ocean where the magnitude of this radiation and its spatial and temporal variability are not well known. The data sets are compared to quality-controlled measurements of hourly means of irradiance made at five buoys of the PIRATA network for the period 2012-2013. The data sets comprise the re-analyses MERRA-2 and ERAS, and three satellite-derived data sets: HelioClim-3v5, SARAH-2 and CAMS Radiation Service v2. It was found that the re-analyses MERRA-2 and ERAS often report cloud-free conditions while the actual conditions are cloudy, yielding an overestimation of the irradiance in such cases; and... |
Tipo: Text |
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Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00623/73549/73802.pdf |
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