Role of oceanic air bubbles in atmospheric correction of ocean color imagery

Banghua Yan, Bingquan Chen, Knut Stamnes

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Ocean color is the radiance that emanates from the ocean because of scattering by chlorophyll pigments and particles of organic and inorganic origin. Air bubbles in the ocean also scatter light and thus contribute to the water-leaving radiance. This additional water-leaving radiance that is due to oceanic air bubbles could violate the black pixel assumption at near-infrared wavelengths and be attributed to chlorophyll in the visible. Hence, the accuracy of the atmospheric correction required for the retrieval of ocean color from satellite measurements is impaired. A comprehensive radiative transfer code for the coupled atmosphere–ocean system is employed to assess the effect of oceanic air bubbles on atmospheric correction of ocean color imagery. This effect is found to depend on the wavelength-dependent optical properties of oceanic air bubbles as well as atmospheric aerosols.

Original languageEnglish
Pages (from-to)2202-2212
Number of pages11
JournalApplied Optics
Volume41
Issue number12
DOIs
StatePublished - 20 Apr 2002

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