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    Cross calibration of IRS-P4 OCM satellite sensor

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    Proc_Spie_6404_42.pdf (284.9Kb)
    Date
    2006
    Author
    Suresh, T.
    Desa, E.
    Mascarenhas, A.A.M.Q.
    Matondkar, S.G.P.
    Naik, P.
    Nayak, S.R.
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    Abstract
    The cross calibration of ocean color satellite sensor, IRS-P4 OCM using the radiative transfer code, with SeaWiFS as a reference are presented here. Since the bands of IRS-P4 OCM are identical to those of SeaWiFS and SeaWiFS has been continuously and rigorously calibrated, SeaWiFS is used as a reference for the cross calibration of IRS-P4 OCM. Calibrations coefficients for each band of IRS-P4 OCM are derived by comparing the actual radiances detected by the satellites at top of the atmosphere and those obtained from the radiative transfer simulations of IRS-P4 OCM and SeaWiFS. The chlorophyll a values derived using the calibrated IRS-P4 OCM are found to be comparable with those derived from SeaWiFS and in close agreement with the measured values. The relative root mean square error (RRMSE) between measured chlorophyll a and those derived from the satellites are found to be 0.28 and 0.26 for SeaWiFS and IRS-P4 OCM respectively
    URI
    http://drs.nio.org/drs/handle/2264/543
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