Topics in this Issue
(a) RGB image of the Moderate-Resolution Imaging Spectroradiometer (MODIS) Aqua data from 11 April 2005 over the northeastern coast of the United States. (b) Retrieved aerosol optical thickness over the same scene in the 869 nm band. (c) NO2 amount obtained from the Ozone Measuring Instrument (OMI) onboard Aura, which flies in formation with MODIS-Aqua. (d) Normalized water-leaving radiance (nLw) in the 412 nm band from the current operational processing of MODIS data. Comparing (c) with (d), one finds that in the region where the NO2 amount is very high (>1.6 x 1016 molecules/cm2), the retrieved nLw is very low (<0.1 mW/cm2/micro m/sr). Incorporation of the NO2 atmospheric correction [(e)] results in higher nLw values over high NO2 amount areas [(c)]. The underestimation in the mean value of nLw for the scene is ~17%. For further details, see the paper by Ahmad et al., pp. 6504-6512.
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