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On the applicability of the Heliosat-2 method to assess surface solar irradiance in the Intertropical Convergence Zone, French Guiana

descriptionPublicationkeyboard_double_arrow_right Article , Journal 22 Jan 2013 France Publisher:Informa UK LimitedJournal:International Journal of Remote Sensing, volume 34, pages 3,012-3,027 (issn: 0143-1161, eissn: 1366-5901,

Authors: Marie-Joseph, Isabelle; Linguet, Laurent; Gobinddass, Marie-Line; Wald, Lucien;

doi: 10.1080/01431161.2012.756598

On the applicability of the Heliosat-2 method to assess surface solar irradiance in the Intertropical Convergence Zone, French Guiana

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Abstract

Measurements of daily means of surface solar irradiance made at four ground stations in French Guiana are compared to estimates from the HelioClim-3 database produced by the Heliosat-2 method applied to Meteosat satellite images. The bias ranges from 12 W m−2 6% of the mean of measurements to 23 W m−2 12%, depending on the stations. The root mean square difference ranges between 23 W m−2 11% and 35 W m−2 18%. The correlation coefficient r is close to 0.9. Better results are observed during the rainy season than during the dry season. Uncertainties are mainly due to the presence of clouds, large viewing angles of the Meteosat satellite, and limitations of the atmospheric transmittance model under the tropical atmospheric conditions. It is concluded that the Heliosat-2 method provides new knowledge about solar radiation in French Guiana.

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Keywords

[SPI.SIGNAL] Engineering Sciences/Signal and Image processing, [ SDU.OCEAN ] Sciences of the Universe [physics]/Ocean, Atmosphere, cloud index, [ INFO.INFO-TS ] Computer Science [cs]/Signal and Image Processing, 550, [INFO.INFO-TS] Computer Science [cs]/Signal and Image Processing, solar radiation, satellite, [ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing, OCEAN] Planète et Univers/Océan, Atmosphère [[SDU], 551, remote sensing, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, [SDU.OCEAN] Sciences of the Universe/Ocean, Atmosphere, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, SIGNAL] Engineering Sciences/Signal and Image processing [[SPI], Atmosphere, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere, SIGNAL] Sciences de l'ingénieur/Traitement du signal et de l'image [[SPI], [INFO.INFO-TS] Computer Science/Signal and Image Processing, OCEAN] Sciences of the Universe/Ocean, Atmosphere [[SDU], INFO_TS] Informatique/Traitement du signal et de l'image [[INFO], INFO_TS] Computer Science/Signal and Image Processing [[INFO], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, Meteosat, energy

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