Cloud masking of SeaWiFS images over coastal waters using spectral variability
نویسندگان
چکیده
منابع مشابه
EVALUATING THE VALIDITY OF SeaWiFS CHLOROPHYLL ALGORITHM FOR COASTAL WATERS
The SeaWiFS ocean colour sensor on board the SeaStar (Orbview 2) satellite is able to derive the chlorophyll concentration in the surface sea water. The chlorophyll algorithm employed is based on the ratio of radiance or reflectance measured in the blue and green spectral bands. Regression between the band ratio and the in-situ measurements of chlorophyll values gives the coefficients for the r...
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The use of satellites to monitor the color of the ocean requires effective removal of the atmosphere signal. The methods for treating the atmosphere have depended on the high absorption of red and near-infrared (NIR) light by water. In coastal waters, the presence of water-leaving radiances in the NIR introduces two sources of error into the removal of the aerosol. As a result, the atmospheric ...
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The National Aeronautics & Space Administration (NASA) Sea viewing Wide Field of view Sensor (SeaWiFS) began operational measurement of ocean colour in September 1997. Upgrades to the SeaWiFS data processing system (SeaDAS) have occurred frequently and the effects of these revisions on the remotely sensed estimates of chlorophyll-a concentration (chl-a) have been significant. Measurements of ch...
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In this paper, we analyze the effectiveness of spectral mixture techniques in the generation of a cloud abundance mask. Two different mixture models are considered: linear and nonlinear. The linear model first identifies pure spectral constituents (endmembers) and then expresses mixed pixels as linear combination of endmembers. It is clear that there are naturally occurring situations where non...
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A technique is presented for estimating suspended sediment concentrations of turbid coastal waters with remotely sensed multi-spectral data. The method improves upon many standard techniques, since it incorporates analyses of multiple wavelength bands (four for Sea-viewingWide Field of view Sensor (SeaWiFS)) and a nonlinear calibration, which produce highly accurate results (expected errors are...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2009
ISSN: 1094-4087
DOI: 10.1364/oe.17.012246