On the consistency of the normalized radiances of the Caspian Sea from the ocean color scanners SeaWiFS and MODIS |
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| Authors: | G S Karabashev M A Evdoshenko S V Sheberstov |
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| Institution: | 1.Shirshov Institute of Oceanology,Russian Academy of Sciences,Moscow,Russia |
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| Abstract: | The consistency of the data of the ocean color scanners SeaWiFS and MODIS is examined using the example of the Caspian Sea
as a water basin influenced by external sources of optically-significant admixtures. It was established that the discrepancies
of the normalized radiances computed from the scanners’ data depend on the sunlight’s wavelength, grow when passing from the
mid-sea to the coastal regions and vary in sign and magnitude within one and the same area under conditions favorable for
passive remote sensing from space. Under any conditions, the minimal discrepancy occurs in the green-yellow range. The use
of the radiances of this range to derive the oceanological characteristics secures the minimal errors when assessing the long
period variability of the aquatic environment based on merging of the SeaWiFS and MODIS data. |
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